Medicine by Alexandros G. Sfakianakis,Anapafseos 5 Agios Nikolaos 72100 Crete Greece,00302841026182,00306932607174,alsfakia@gmail.com,
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Κυριακή 30 Δεκεμβρίου 2018
JAMA Otolaryngology,Head & Neck Surgery,The Most Talked About Articles of 2018 : Association of Long-Term Risk of Respiratory, Allergic, and Infectious Diseases With Removal of Adenoids and Tonsils in Childhood, Association of Age-Related Hearing Loss With Cognitive Function, Cognitive Impairment, and Dementia, Association Between Hearing Aid Use and Health Care Use and Cost Among Older Adults With Hearing Loss, Factors Associated With Phantom Odor Perception, Association of Continuous Positive Airway Pressure Treatment With Sexual Quality of Life in Patients With Sleep Apnea, Traumatic Tympanic Membrane Perforations Diagnosed in Emergency Departments, Association Between Portable Music Player Use and Hearing Loss Among Children of School Age, Association of Gastroesophageal Reflux With Malignancy of the Upper Aerodigestive Tract in Elderly Patients, Association of Tinnitus and Other Cochlear Disorders With a History of Migraines, Incidence of Thyroid Cancer Among Ch
Dermatology Venereology Leprology
| Cosmetic dermatology: An integral part of current dermatology curriculum Jasleen Kaur Sandhu Indian Journal of Dermatology, Venereology, and Leprology 2019 85(1):1-2 |
| Methods to overcome poor responses and challenges of laser hair removal in dark skin Shehnaz Zulfikar Arsiwala, Imran M Majid Indian Journal of Dermatology, Venereology, and Leprology 2019 85(1):3-9 Conventional and advance technologies are available for laser hair removal. Complete and permanent hair reduction is not yet possible by treatment with lasers. Ideal patient for any conventional laser hair removal treatment is one who has thick, dark terminal hair, light skin and normal hormonal status. Factors that contribute to variable outcomes in laser hair removal can be broadly divided into patient related ones and the technology related ones. Skin type, hair color, thickness and density, degree of tan, hormonal dysfunction etc., constitute the patient related factors. The wavelength, fluence, spot size and pulse duration of the laser system are the technology related factors. There are some patients who respond variably, unpredictably or poorly to laser hair removal despite ensuring that indication for treatment is appropriate with adequate parameters of the laser system. This article reviews various patient related and technology related factors which lead to variable-to-poor outcomes in laser hair removal; and various challenges and limitations of laser hair removal technology in patients with dark skin types. |
| Optimizing Q-switched lasers for melasma and acquired dermal melanoses Sanjeev Jayanth Aurangabadkar Indian Journal of Dermatology, Venereology, and Leprology 2019 85(1):10-17 The Q-switched Nd:YAG laser is an established modality of treatment for epidermal and dermal pigmented lesions. The dual wavelengths of 1064nm and 532nm are suited for the darker skin tones encountered in India. Though this laser has become the one of choice for conditions such as nevus of Ota, Hori's nevus and tattoos, its role in the management of melasma and other acquired dermal melanoses is not clear. Despite several studies having been done on the Q-switched Nd:YAG laser in melasma, there is no consensus on the protocol or number of sessions required. Acquired dermal melanoses are heterogenous entities with the common features of pigment incontinence and dermal melanophages resulting in greyish macular hyperpigmentation. This article reviews the current literature on laser toning in melasma and the role of the Q-switched Nd:YAG laser in stubborn pigmentary disorders such as lichen planus pigmentosus. As the pathology is primarily dermal or mixed epidermal-dermal in these conditions, the longer wavelength of 1064nm is preferred due to its deeper penetration. Generally multiple sessions are needed for successful outcomes. Low fluence Q-switched Nd:YAG laser at 1064nm utilizing the multi-pass technique with a large spot size has been suggested as a modality to treat melasma. Varying degrees of success have been reported but recurrences are common on discontinuing laser therapy. Adverse effects such as mottled hypopigmentation have been reported following laser toning; these can be minimized by using larger spot sizes of 8 to 10mm with longer intervals (2 weeks) between sessions. |
| Isotretinoin and dermatosurgical procedures Venkataram Mysore, HM Omprakash, Gayatri Nagindas Khatri Indian Journal of Dermatology, Venereology, and Leprology 2019 85(1):18-23 Several early reports suggested that performance of dermatosurgical procedures in patients on oral isotretinoin is associated with abnormal skin healing, keloid or hypertrophic scar formation. However, this association has been recently questioned in some studies. This review examines this issue, analyzes the studies published and concludes that the recommendation made earlier about the need to avoid dermatosurgical procedures in patients on isotretinoin is based on inadequate and insufficient evidence and hence needs revision. The review also suggests that recent studies on the subject establish that performing such procedures is safe. |
| Complications of laser and light-based devices therapy in patients with skin of color BS Chandrashekar, Chaithra Shenoy, C Madura Indian Journal of Dermatology, Venereology, and Leprology 2019 85(1):24-31 Lasers and light-based devices are indispensable to an aesthetic dermatology practice. The growing popularity of lasers has been matched by a sharp increase in the incidence of complications. The Indian skin with its high melanin content is more prone to injury and careful setting of laser parameters, early detection of complications and immediate therapy are vital to avoiding permanent sequelae. We review the various complications that occur during laser procedures and their management. |
| Autologous noncultured melanocyte-keratinocyte transplantation in stable vitiligo: A randomized comparative study of recipient site preparation by two techniques Sumit Gupta, Vineet Relhan, Vijay Kumar Garg, Bijaylaxmi Sahoo Indian Journal of Dermatology, Venereology, and Leprology 2019 85(1):32-38 Background: Accurate preparation of recipient area is a critical step in melanocyte-keratinocyte transplantation procedure for vitiligo. It is an important potential step for adaptation in the quest to achieve better results and ablative lasers potentially offer excellent precision over margin and depth control in achieving that. Objective: To compare between the two techniques used for recipient site preparation: Er:YAG laser ablation and mechanical dermabrasion for melanocyte-keratinocyte transplantation procedure in terms of re-pigmentation achieved and adverse effects seen. Methods: A randomized comparative trial was performed among 32 patients of stable vitiligo undergoing melanocyte-keratinocyte transplantation procedure. In Group A (n = 15), recipient site preparation was done with Er:YAG laser, and in Group B (n = 17), it was done with a motorized dermabrader. Patients of both groups were objectively assessed for re-pigmentation at 1, 3 and 6 months. Results: A total of 253.696 cm2 of depigmented surface was operated upon and re-pigmentation of 125.359 cm2 (49.4%) was achieved. On comparison between two groups, no statistical difference was found with respect to total re-pigmentation achieved (Group A: 54.67% vs Group B: 48.841%, P = 0.663) and grades of re-pigmentation achieved (P = 0.796). Occurrence of adverse events was also statistically similar in both the groups. Conclusion: This study did not reveal any statistically different outcome (in terms of re-pigmentation and adverse effects) between the two methods of recipient site preparation – motorized dermabrasion and Er:YAG ablation. Limitations: This study is small and larger studies are needed to ascertain the benefit of Er:YAG for recipient site preparation. Future studies may also ascertain variables such as time taken to prepare the recipient area, nature of bleeding, postoperative healing, difficulties in specific area, cost of the procedure, patient comfort and ease of the surgeon, rather than comparing the re-pigmentation alone. |
| A randomized, open-label, comparative study of oral tranexamic acid and tranexamic acid microinjections in patients with melasma Vinod K Khurana, Rachita R Misri, Swati Agarwal, Akhilesh V Thole, Sachin Kumar, Tanu Anand Indian Journal of Dermatology, Venereology, and Leprology 2019 85(1):39-43 Background: Melasma poses a great challenge as its treatment modalities are unsatisfactory. Treatment using tranexamic acid is a novel concept. Aim: This study aimed to compare the therapeutic efficacy and safety of oral tranexamic acid and tranexamic acid microinjections in patients with melasma. Methods: This is a prospective, randomized, open-label study with a sample size of 64, 32 in each treatment arm. Thirty-two patients were administered localized microinjections (4 mg/ml) of tranexamic acid monthly in 1 arm, while in the other arm, 32 were given oral tranexamic acid 250 mg twice a day. Patients were followed up for 3 consecutive months. Clinical photographs were taken at each visit, and a modified melasma area and severity index scoring was performed at the beginning and end of treatment. Results: Improvement in melasma area and severity index score in the oral group was 57.5% as compared to 43.5% in the intralesional group. All 32 patients in the oral group (100%) showed >50% improvement, out of which 8 showed >75% improvement. In the intralesional group, 17 (53%) patients had >50% improvement, of which 3 had >75% improvement. The remaining 15 patients in this group had <50% improvement. Thus, the oral group showed a more significant response as compared to the intralesional group. No major adverse effects were observed in both the groups. At 6-month follow-up, two patients (6.2%) in the oral group had recurrence as compared to three patients (9.4%) in the intralesional group. Limitations: A small sample size was one of the limitations in this study. The dose of tranexamic acid in microinjections and the frequency of injections could have been increased. Conclusion: Tranexamic acid provides rapid and sustained improvement in the treatment of melasma. It is easily available and affordable. Oral route is undoubtedly efficacious, but the results of microinjections, while encouraging, can probably be enhanced by either increasing the frequency of injections or increasing the concentration of the preparation. |
| Safety and efficacy of autologous noncultured dermal cell suspension transplantation in the treatment of localized facial volume loss: A pilot study Alok Kumar Sahoo, Savita Yadav, Vinod K Sharma, Anita Singh Parihar, Surabhi Vyas, Somesh Gupta Indian Journal of Dermatology, Venereology, and Leprology 2019 85(1):44-50 Background: Available options for correction of facial volume loss, such as synthetic fillers, autologous fat and cultured fibroblasts, have limitations viz. temporary effect and high cost. Aim: To assess the use of a novel technique, autologous non-cultured dermal cell suspension transplantation, for correction of localized facial volume loss due to inflammatory pathologies. Methods: It was a pilot study conducted in the Dermatology Outpatient Department, All India Institute of Medical Sciences (AIIMS), New Delhi, India. Autologous non-cultured dermal cell suspension was transplanted in a total of 10 patients, out of which 5 had predominantly dermal loss and the rest had predominantly lipoatrophy. The donor tissue from the gluteal region was digested into a single cell suspension using collagenase-1 and injected into the recipient area. The outcome was assessed subjectively by patients and investigators and objectively using ultrasonography. Cell count, viability testing and measurement of mesenchymal stem cells were also done. Results: On assessment of patients, the median improvement in the predominantly dermal atrophy group at 3 and 6 months was 70% (range: 10–90%) and 80% (range: 0–90%), respectively, and in the predominantly lipoatrophy group, 0% (range: 0–40) and 0% (range: 0–50), respectively. Mean thickness of dermis + subcutis at the baseline was 1.835 mm (range: 0.89–6.04 mm), which increased to 2.912 mm (range: 0.88–7.07 mm, P = 0.03) at 6 months. Limitations: Our pilot study has some limitations such as small sample size and heterogeneity of the recruited patients. Conclusions: Autologous non-cultured dermal cell suspension transplantation appears to be safe and effective in localized facial dermal defects because of inflammatory pathologies, but not effective in deeper defects. |
| Toenail concentrations of zinc, selenium and nickel in patients with chronic recurrent warts: A pilot two-group comparative study Mohamed El-Komy, Vanessa Hafez, Rania Abdel Hay, Dina Mehaney, Iman Hafez Indian Journal of Dermatology, Venereology, and Leprology 2019 85(1):51-55 Background: Normal immune functioning requires sufficient levels of trace elements including zinc and selenium, while elements such as nickel can be immunotoxic. Aim: To assess long-term abnormalities in zinc, selenium and nickel levels in patients with chronic recurrent warts. Methods: Toenail samples were taken from 28 patients with chronic recurrent warts and 30 apparently healthy matching controls were analysed. Toenail concentrations of zinc, selenium and nickel were measured using inductively-coupled plasma-optical emission spectroscopy. Results: Selenium levels were significantly higher in patients than in controls (P = 0.03). Levels of trace elements did not correlate with the number or duration of warts. Toenail nickel levels in all subjects were higher than globally reported values. Limitations: A small sample size and the absence of regional reference ranges for concentrations of trace elements in toenails. Conclusion: Zinc does not seem to be involved in the chronicity of warts, and it is unclear if selenium has a protective role against warts. Our finding of high concentrations of nickel in both patients and controls raises concerns about environmental exposure. |
| Successful treatment of metastatic extramammary Paget's disease with pemetrexed monotherapy systemically and 5-fluorouracil topically Kexu Chen, Hanlin Liang, Jiewen Peng, Yanfang Zheng Indian Journal of Dermatology, Venereology, and Leprology 2019 85(1):56-59 Advanced extramammary Paget's disease does not have a standardized treatment guideline as its incidence is low and has been rarely reported in literature. Here we describe a case of metastatic extramammary Paget's disease successfully treated with topical 5-fluorouracil (5-FU) and systemic pemetrexed. The therapy was safe without any appreciable adverse effects like diarrhea, rash, neutropenia or fatigue; maintaining remission for more than 6 months. Thus, we propose 5-FU and pemetrexed as the first-line therapy for advanced extramammary Paget's disease, especially for aged patients with unresectable skin lesions. |
Medical Research
| 'Infectobesity' in egyptian adolescent women and its relations to carotid intima–media thickness Sahar A El-Masry, Hanan A El Gamal, Muhammad Al-Tohamy, Ayman Nada, Amany H Abdelrahman, Mohamed Kh. Metkees, Amany Ebrahim, Walaa Saad Journal of The Arab Society for Medical Research 2018 13(2):79-88 Background ‘Infectobesity’ is a new term to describe obesity of infectious origin, such as infection by human adenovirus-36 (Adv36). It appears to be a new concept, evolved over the past 20 years. Visceral obesity is associated with a higher risk of cardiovascular disease. Increased carotid intima–media thickness (CIMT), a marker of early-onset atherosclerosis, has been observed in obese children and adolescents. The present study aims to investigate the relationship between visceral obesity, CIMT, and Adv36 in female Egyptian adolescents. Patients and methods The present study included 90 women aged 12–15 years. It was conducted at the Medical Excellence Research Center of the National Research Centre, Cairo, Egypt, during the period between September 2016 and November 2017. Anthropometric assessment was done. Fasting blood samples were withdrawn for the measurement of Qualitative Human Adv36 antibody using a sandwich enzyme-linked immunosorbent assay. Fasting plasma glucose was determined calorimetrically, by the glucose oxidase method and insulin level using the solid-phase enzyme-linked immunosorbent assay and lipid profile. Visceral obesity was measured by an abdominal ultrasound. CIMT for both carotid arteries were measured by high-resolution echo Doppler. Results Girls with visceral obesity (n=26) had higher frequency of increased CIMT at left (96.2 vs. 75%), right carotid artery (84.6 vs. 73.4%) and Adv36 sero-positive antibody (69.2 vs. 56.2%) than among those without visceral obesity (n=64). Among the total samples, visceral obesity had significant positive correlations with BMI, waist and hip circumference, while it had insignificant correlations with age, blood pressure (BP), CIMT at right and left carotid arteries, adenovirus and laboratory findings. CIMT had a significant positive correlation with each other, insulin resistance and total cholesterol, and significant negative correlations with high-density lipoprotein and waist circumference. Adv36 had significant negative correlations with BP (both systolic and diastolic) and significant positive correlation with insulin level. Adv36 and CIMT had insignificant correlations with each other and with the anthropometric measurements, BP, visceral obesity, triglycerides, and low density lipoprotein. Conclusion The frequency of Adv36 and increased CIMT at left carotid artery were higher among girls with visceral obesity than among those without visceral obesity. However, visceral obesity, CIMT at both right and left carotid arteries, and Adv36 had insignificant correlations with each other. |
| Inhibitory effect of bee venom against potassium bromate causing genetic toxicity and biochemical alterations in mice Abeer H Abd El-Rahim, Omaima M Abd-El-Moneim, Heba A.M. Abd El-Kader, Amira Abd El Raouf Journal of The Arab Society for Medical Research 2018 13(2):89-98 Background/aim Bee venom (BV) therapy is a highly effective treatment, capable of improving one’s health. The present study attempts to assess the effect of BV on the toxicity of oral administration of potassium bromate (KBrO3) which has been widely used in food and cosmetic industries. Materials and methods Sixty adult male mice were gavaged with KBrO3 at two doses (100 and 200 mg/kg body weight) for 10 days. Afterwards, BV at a dose of 120 μg/kg body weight was injected subcutaneously three times per week for two successive weeks. The genetic study was performed using chromosomal aberration and micronucleus formation in the bone marrow, DNA fragmentation in liver cells and by sperm analysis. In addition, serum biochemical markers such as catalase and malondialdehyde, kidney, and liver functions were assessed. Results The results have shown that KBrO3 caused DNA damage that represented the increase in the frequencies of chromosome abnormalities, micronuclei formation, percentage of DNA fragmentation, and sperm morphological abnormalities. Meanwhile, the results showed that KBrO3 exhibited severe toxicity for antioxidant activities for liver and kidney functions. Conversely, BV significantly decreased the frequencies of DNA damage in all aforementioned parameters induced by KBrO3. In addition, it improved the antioxidant activities and the function of the liver and kidneys. Conclusion BV has a potent ameliorating effect against the KBrO3 hazard impacts in animal tissues especially at higher doses. This observation indicated that BV could be a potential therapeutic agent in the treatment of KBrO3 risk. |
| Impact of nano-TiO2 particles on water sorption and solubility in different denture base materials Wessam M Dehis, Sherihan M Eissa, Ayman F Elawady, Menatallah M Elhotaby Journal of The Arab Society for Medical Research 2018 13(2):99-105 Background/aim Denture base materials with all their diversities and the curing method have a massive impact on their physical, mechanical, and biological traits. This contemplate is aimed to both assess and relate water sorption and solubility of heat-cured and microwave-cured acrylic resin denture base materials with and without the addition of titanium oxide nanoparticles (TiO2 NPs). Materials and methods A total number of 80 circular specimens were fabricated for the two tested groups (n=40). Group I was divided into two subgroups: group IA and group IB (20 each) fabricated from heat-cured and microwave-cured acrylic resin, respectively. Another group (group II) was divided into two subgroups: group IIA and group IIB (20 each) as in group I with the addition of TiO2 NPs. Then, the degree of water sorption and water solubility was calibrated by using an electronic balance for all specimens and determined by the aid of a specific formula. Results The present results indicated that there is a significant difference between all groups using one-way analysis of variance test as the P value was less than 0.05. Moreover, Tukey’s post-hoc test was performed and revealed that there was a significant difference between all subgroups except (group IIA and group IIB) in which there was an insignificant difference regarding water sorption and water solubility. Conclusion Within the limitation of this consideration, microwave-cured acrylic resin is superior to the heat-cured one regarding both water sorption and solubility. Moreover, the addition of TiO2 NPs revealed the best outcome. |
| Clinical efficacy of nicotine replacement therapy in the treatment of minor recurrent aphthous stomatitis Mai Zakaria, Aliaa El-Meshad Journal of The Arab Society for Medical Research 2018 13(2):106-112 Background/aim Recurrent aphthous stomatitis (RAS) is a common and widely recognized disease involving the oral mucous membrane. Nicotine replacement therapy (NRT) is a dose-dependent safe method for encountering useful effects of nicotine. This study aimed to evaluate the clinical efficacy of NRT in the treatment of minor RAS. Materials and methods A total of 50 patients from Oral Medicine and Periodontology Department, Faculty of Dentistry, Cairo University, with active minor RAS lasting for less than 48 h were randomly allocated into two groups (25 each): placebo and nicotine groups. They were treated with placebo and 2-mg nicotine chewing gum, correspondingly, twice daily for 2 weeks. All participants were assessed for pain, erythema, and ulcer size sores at 4 and 6 days from baseline. Frequency of recurrence was evaluated at 1-month, 2-month, and 3-month intervals. Results Regarding pain and erythema scores, the nicotine group showed lower mean with significant difference after 6 days in comparison with the placebo group. A lower mean of ulcer size was recorded in the nicotine group, with a significant difference after 4 and 6 days. A lower mean of recurrence score was recorded in nicotine group, with nonsignificant difference compared with the placebo group. Conclusion Low-dosage NRT in the form of chewing gum may be considered as an innovative and safe alternate treatment modality for minor RAS. |
| Androgen receptor expression in hormone-negative breast cancers and its prognostic significance Dalia M Abouelfadl, Hebat Allah A Amin, Noha N Yassen, Marwa E Shabana, Amir M.H. Salem Journal of The Arab Society for Medical Research 2018 13(2):113-118 Background/aim Breast carcinoma is a common, yet heterogeneous aggressive disease affecting relatively young patients. The androgen receptor (AR) is expressed in majority of breast cancers and across the main breast cancer subtypes. The aim of this study was to evaluate AR expression in hormone-negative breast cancer subtypes. Materials and methods Sixty cases of breast cancer were involved in this study; the samples were received in the Department of Pathology of Kasr El-Aini Hospital, Cairo University, Egypt. The expression of AR and human epidermal growth factor receptor-2 receptors were studied by immunohistochemistry in 60 formalin-fixed paraffin-embedded selected hormone-negative breast cancer surgical specimens. The immunohistochemistry expression of the marker was correlated with the clinicopathological variables. Results Of the hormone-negative cases, 61.6% show positive AR expression, 89% of which are invasive duct carcinoma, 68.3% are associated with ductal carcinoma in situ, and 55% are human epidermal growth factor receptor-2-enriched subtype. A significant correlation was found between the AR expression and tumor type. There is no evident significant correlation with tumor grade, multicentricity or lymphovascular invasion. Conclusion The AR has recently emerged as a useful marker for the further refinement of breast cancer subtype classification. Antiandrogens are thought to markedly enhance treatments and to be the first targeted therapy in hormone-negative breast cancer cases. |
| Morphometric analysis and immunohistochemical expression of cytochrome C oxidase in colonic adenomas and adenocarcinomas Noha N Yassen, Dalia M Abouelfadl, Amina A Gamal elDin Journal of The Arab Society for Medical Research 2018 13(2):119-128 Background/aim Colorectal cancer is the seventh most common cancer in Egypt, constituting 3.47% of male cancers and 3% of female cancers. The aim of the current study is to evaluate the immunohistochemical expression of cytochrome C oxidase (CcO) as well as the nuclear morphometric measurements in colonic adenomas and adenocarcinomas. Materials and methods Sixty cases of colonic biopsies/specimens were involved in this study. The samples were received in the Department of Pathology of Kasr El-Aini Hospital, Cairo University, Egypt, and they were divided into three groups: 20 cases of normal control, 20 cases of colonic adenoma, and 20 cases of colonic adenocarcinoma. The expression of CcO was studied by immunohistochemistry in 60 formalin-fixed paraffin blocks. Nuclear morphometric parameters were evaluated using an image analysis system. The area percentage of the marker expression was correlated with nuclear morphometric parameters. Results Immunohistochemical study showed that 65% of control biopsies showed a significant difference with colonic adenocarcinoma cases in contrast and adenoma cases showed a nonsignificant difference with normal control biopsies. Mean areas percentages of CcO expression were significantly different between all three studied groups. The means of nuclear area, length, and perimeter showed a significant difference while means nuclear width and roundness showed a nonsignificant difference between all three studied groups. There was significant correlation between mean area percentage of CcO expression with mean nuclear area and perimeter in control, adenoma, and adenocarcinoma cases. Conclusion CcO protein is significantly expressed in the cytoplasm of normal colonic mucosa. It was significantly deficient in colonic adenocarcinoma. Nuclear morphometry can be introduced as a useful morphologic feature of patients with variable colonic lesions specially in combination with CcO. |
| The antifibrotic effect of Zilla spinosa extracts targeting apoptosis in CCl4-induced liver damage in rats Enayat A Omara, Sayed A El-Toumy, Marwa E Shabana, Abdel-Razik H Farrag, Somaia A Nada, Nermeen Shafee Journal of The Arab Society for Medical Research 2018 13(2):129-143 Background/aim Liver fibrosis and its end-stage cirrhosis are the main reasons of morbidity and mortality all over the world. The current study aimed to evaluate the efficacy of Zilla spinosa (Z. spinosa) on CCl4-induced liver fibrosis, apoptosis, and oxidative stresses in rats. Materials and methods Extract of aerial part of Z. spinosa was used in this study. Thirty male Sprague‑Dawley rats were enrolled in this study and divided into five groups (six each): group 1 served as control and groups 2–5 were treated with CCl4 (1 ml/kg intraperitoneal twice a week for 8 weeks), where group 2 served as a control positive, group 3 received silymarin (50 mg/kg) daily, and groups 4 and 5 were administrated with Z. spinosa (100 and 200 mg/kg, respectively) daily for 8 weeks. At the end of each experiment, liver function tests were analyzed in serum, whereas malondialdehyde (MDA), Nitric oxide (NO), Glutathione (GSH), and hydroxyproline (HA) were analyzed in liver tissues. Liver fibrosis was confirmed histopathologically, and collagen content, caspase-3, and α-smooth muscle actin (α-SMA) were assayed immunhistochemically. Results Alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase, total bilirubin, MDA, NO, and HA levels were increased (P<0.05), whereas total protein and GSH were decreased (P<0.05) in CCl4-administrated rats. Histopathological results showed loss of lobular structure, fibrosis with expansion of portal tract by fibrous tissue together with inflammatory changes confined to portal tract and central vein, and intense centrilobular necrosis and remarkable fatty hydropic degeneration. In addition, extensive accumulation of connective tissue, marked depletion of glycogen, strong expression of α-SMA, and increased of caspase-3 were found in CCl4-administrated rats. Oral administration of Z. spinosa at 100 or 200 mg/kg restored the normal levels of liver function parameters, MDA, NO and GSH; decreased HA; and reduced collagen, glycogen content, caspase-3, and α-SMA in liver tissue of rats. The high dose of 200 mg/kg showed more potent effect than low dose of 100 mg/kg when compared with silymarin treatment group. Conclusion The present study clarified that Z. spinosa extract has antioxidant and antiapoptotic properties in CCl4-induced liver fibrosis in rats, and may be able to exert a therapeutic effect on developing hepatic fibrosis; moreover, high dose of 200 mg/kg appeared to be more potent than low dose (100 mg/kg). |
| Image analysis and Ki-67 expression in urothelial dysplasia and carcinoma Manal A Badawi, Sonia L El-Sharkawy, Naglaa F Abbas, Wafaa E Abdel-Aal Journal of The Arab Society for Medical Research 2018 13(2):144-150 Background/aim Cancer of the urinary bladder is a worldwide disease in which transitional cell carcinoma is the most common histologic type. The diagnosis of dysplasia is particularly important, as it is the precursor of invasive carcinoma. The present study aimed to investigate the role of image analysis together with Ki-67 immunostaining in bladder dysplasia and invasive urothelial carcinoma. Materials and methods This study was carried out in 80 urinary bladder paraffin blocks that were selected from the Department of Pathology of Kasr El-Aini Hospital, Cairo University, Egypt. The studied cases were divided into four groups: six cases of normal bladder mucosa, 12 cases of chronic cystitis, 18 cases of epithelial dysplasia, and 44 cases with transitional cell carcinoma. Morphometric analysis and Ki-67 expression were studied in all cases using an image analysis system. Results All morphometric parameters, DNA index, and proliferating cells’ percent and Ki-67 index were increasing from normal, chronic cystitis, dysplasia to carcinoma cases. However, nuclear area, length, size, and epithelial stromal ratio showed significant differences between dysplasia and carcinoma cases (P<0.05). High-grade carcinoma showed significant enlargement of nuclear area and size, as compared with low-grade carcinoma. DNA index and proliferating cells’ % showed a significant difference between dysplasia and carcinoma cases. Both parameters were significantly higher in high-grade carcinoma. Normal bladder and chronic cystitis cases exhibited negative stain for Ki-67. However, all cases of dysplasia and carcinoma exhibited a positive stain for Ki-67. The carcinoma cases showed a significantly higher Ki-67 index (68%) than the dysplastic cases (34%). Conclusion The present study revealed the usefulness of image analysis together with Ki-67 expression in discriminating cases of bladder dysplasia and carcinoma. |
Antiepileptic drugs and foetal malformation: analysis of 20 years of data in a pregnancy register.
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Antiepileptic drugs and foetal malformation: analysis of 20 years of data in a pregnancy register.
Seizure. 2018 Dec 19;65:6-11
Authors: Vajda FJE, Graham JE, Hitchcock AA, Lander CM, O'Brien TJ, Eadie MJ
Abstract
PURPOSE: This paper reports additional data supplementing earlier publications based on Australian Pregnancy Register (APR) data.
METHOD: Over 20 years, the APR has collected Information on pregnancies in Australian women with epilepsy (WWE), untreated WWE and those taking AEDs for other indications. Contact is by telephone, at set intervals. Treatment is not interfered with. Data are analysed using conventional statistical techniques, confidence interval methods, and logistic regression.
RESULTS: By 2018, the APR contained details of 2148 pregnancies. AEDs were taken throughout 1972 of the pregnancies (91.8%). The remaining 176 (8.2%) did not receive AEDs, at least early in pregnancy. There were (i) dose-related increased incidences of pregnancies carrying foetal malformations associated with maternal intake of valproate and topiramate when topiramate was a component of AED polytherapy (P < .05), (ii) a similar dose-related trend in relation to carbamazepine intake, (iii) no evidence that levetiracetam and lamotrigine were unsafe from the foetal standpoint, (iv) insufficient data to permit conclusions regarding teratogenicity in relation to other AEDs, and (v) no evidence that pre-conception folate supplementation reduced the hazard of AED-associated foetal malformation. AED polytherapy did not increase foetal hazard unless valproate or topiramate was involved in the AED combination. Genetic factors probably contributed to the malformation hazard. Seizures occurring in earlier pregnancy probably did not contribute to the malformation hazard.
CONCLUSIONS: If it were not for the importance of maintaining seizure control, the above findings suggest that it would be better to avoid using certain AEDs, particularly valproate and topiramate, during pregnancy.
PMID: 30593875 [PubMed - as supplied by publisher]
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Diffusion kurtosis imaging of endometrial carcinoma: Correlation with histopathological findings
Publication date: Available online 30 December 2018
Source: Magnetic Resonance Imaging
Author(s): Ichiro Yamada, Junichiro Sakamoto, Daisuke Kobayashi, Naoyuki Miyasaka, Kimio Wakana, Noriko Oshima, Akira Wakabayashi, Yukihisa Saida, Ukihide Tateishi, Yoshinobu Eishi
Abstract
Purpose
In this study, we aimed to determine the usefulness of diffusion kurtosis imaging (DKI) as a noninvasive method for the evaluation of tumor invasion depth, histological grade, and lymph node metastasis in patients with endometrial carcinoma (EMC).
Materials and methods
Our institutional review board approved this retrospective study and waived informed consent. In total, 24 patients suspected of having EMC were examined by a 1.5-T magnetic resonance imaging. DKI data were obtained using a single-shot echo-planar imaging sequence with four b values (0, 500, 1000, and 2000 s/mm2). Kurtosis (K), diffusivity (D), and apparent diffusion coefficient (ADC) maps were generated and compared with histopathological findings.
Results
K maps from all patients identified the junctional zone as a distinct high-K zone (1.443 ± 0.362). This zone was significantly different from the zone of endometrium and outer myometrium (0.678 ± 0.179 and 0.694 ± 0.113, respectively; P < 0.001). K and D values of all EMCs were significantly different from those of all normal uterine wall layers. K and D values were significantly correlated with histological grades of endometrioid adenocarcinomas (r = 0.799, P < 0.001 and r = −0.799, P < 0.001, respectively), while ADC values were not (r = −0.243, P = 0.382). Metastatic and nonmetastatic lymph nodes showed significantly different K (P = 0.001) and D (P = 0.001) values, but not ADC values (P = 0.827).
Conclusions
DKI may be clinically useful for the noninvasive evaluation of depth of tumor invasion, histological grade, and lymph node metastasis in patients with EMC.
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Photoelectrochemical determination of alkaline phosphatase activity based on a photo-excited electron transfer strategy
Publication date: 1 May 2019
Source: Talanta, Volume 196
Author(s): Jiuying Tian, Yanting Yang, Mingjuan Huang, Chunhong Zhou, Jusheng Lu
Abstract
A sensitive photoelectrochemical (PEC) biosensor for determination of alkaline phosphatase (ALP) activity was constructed based on a photo-excited electron transfer strategy. Immobilization of CdTe quantum dots (QDs) on TiO2 nanotube arrays (TNAs), addition of iron (III) and adenosine triphosphate (ATP) in turn can effectively adjust the photocurrent response of TNAs under visible light irradiation due to a photo-excited electron transfer process, and alkaline phosphatase (ALP) activity can be determined for its catalysis toward dephosphorylation of ATP. The preparation of CdTe QDs, construction of TNA/QD PEC biosensor and the mechanism of photo-excited electron transfer are investigated in the present work. Under the optimal experimental conditions, the TNA/QD PEC biosensor shows a low limits of detection (LODs) (0.05 U L−1) and limits of quantification detection (LOQs) (0.15 U L−1), wide linear range from 0.2 to 15 U L−1, and good selectivity towards ALP determination, which has been successfully applied for human serum analysis with good precision (RSD ≤ 5.4%) and high accuracy (recovery rate, 91–112%).
Graphical abstract

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Modifying the reactivity of copper (II) by its encapsulation into polydimethylsiloxane: A selective sensor for ephedrine-like compounds
Publication date: 1 May 2019
Source: Talanta, Volume 196
Author(s): N. Jornet-Martínez, M. Samper-Avilés, R. Herráez-Hernández, P. Campíns-Falcó
Abstract
This paper demonstrates that the reactivity of copper (II) can be modified through its entrappment in a polymeric matrix of polydimethylsiloxane (PDMS), which makes possible the reaction into the support instead of in solution. Amino-containing compounds such as amino acids, proteins and sugars, which react with Cu (II) in solution, do not react inside the polymer. As a prove of concept, a highly specific Cu (II) PDMS-based sensor for ephedrines has been developed in this work. When the sensors are put into contact with solutions of these drugs under basic conditions, a change in their color from pale green to purple is observed. This change enables the visual identification of ephedrine (Eph) in a few min, as well as its quantification using both reflectance diffuse measurements of the sensors and color intensities of their digitalized images. The sensors show suitable analytical performance for Eph-like compounds, and provide limits of detection (LODs) of 0.3–1.0 mg, and relative standard deviations (RDSs) < 10%. The method has been applied to both the qualitative and quantitative analysis of different types of liquid and solid samples (intravenous injection solution of Eph, dietary supplements and illicit drug-street samples) without the need of any special sample treatment.
Graphical abstract

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A highly selective and sensitive electrochemical sensor for tryptophan based on the excellent surface adsorption and electrochemical properties of PSS functionalized graphene
Publication date: 1 May 2019
Source: Talanta, Volume 196
Author(s): Ling Wang, Ran Yang, Jianjun Li, Lingbo Qu, Peter de B. Harrington
Abstract
A new green method for the synthesis of poly(sodium 4-styrenesulfonate) functionalized graphene (PSS–graphene) in aqueous solution was realized by using graphene oxide nanosheets (GO) functionalized with PSS and ascorbic acid (AA) as an reducing agent. Various techniques, including Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy and electrochemistry have been utilized to characterize the as-made nanocomposites. The PSS–graphene was used as a modifier to fabricate an electrochemical sensor of tryptophan (Trp). Due to the difference of the adsorption capacity of PSS–graphene for Trp and Tyr, as well as the different charge states of Trp and the other interfering substances, the sensor showed excellent selectivity for Trp. The synergistic amplification of the stronger enrichment and the enhanced electron transfer rate, the signal of Trp on the PSS–graphene modified electrode was about 100-fold enhanced compared to that of the bare GCE. The peak current of Trp is proportional to its concentration in a wide range from 0.04 to 10.0 µmol L−1 with detection limit of 0.02 µmol L−1. Further, the proposed sensor was applied for the detection of Trp in human serum samples. Favorable results revealed that this work provided a new design strategy and a valuable platform for highly selective and sensitive determination of Trp in complex samples.
Graphical abstract
- •
-
A new green method for the synthesis of poly(sodium 4-styrenesulfonate) functionalized graphene (PSS–graphene) in aqueous solution was realized by using graphene oxide nanosheets (GO) functionalized with PSS and ascorbic acid (AA) as an reducing agent.
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A sensitive and selective electrochemical sensor for the fast determination of tryptophan (Trp) based on PSS–graphene nanocomposite modified GCE was fabricated.
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Relative to the reported methods, this established method is more simple, selective and sensitive.
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A ratiometric fluorescent probe for the detection of endogenous hydroxyl radicals in living cells
Publication date: 1 May 2019
Source: Talanta, Volume 196
Author(s): Biliu Wu, Jiajun Yang, Jianjian Zhang, Zheng Li, Hua Li, Xiao-Feng Yang
Abstract
A new ratiometric fluorescent probe (4) for monitoring hydroxyl radicals (•OH) has been designed and synthesized. The ratiometric sensing of probe 4 toward •OH is realized by the oxidation of the dicyanovinyl group of probe 4 to afford the corresponding epoxide, which can further reaction with •OH to give a coumarin derivative as the final product. The above reaction interrupts the large π-conjugated system of probe 4 and exhibits a remarkable large blue shift of 160 nm in the emission spectra of the sensing system. Probe 4 exhibits high selectivity toward •OH over other reactive oxygen species and reactive nitrogen species. Preliminary study shows that probe 4 can be employed to monitor endogenous •OH in living cells with a ratiometric fluorescent imaging manner.
Graphical abstract

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Central Nervous System Metastasis in Patients With HER2-Positive Metastatic Breast Cancer: Patient Characteristics, Treatment, and Survival From SystHERs.
| Related Articles |
Central Nervous System Metastasis in Patients With HER2-Positive Metastatic Breast Cancer: Patient Characteristics, Treatment, and Survival From SystHERs.
Clin Cancer Res. 2018 Dec 28;:
Authors: Hurvitz SA, O'Shaughnessy J, Mason G, Yardley D, Jahanzeb M, Brufsky AM, Rugo HS, Swain SM, Kaufman PA, Tripathy D, Chu L, Li H, Antao V, Cobleigh M
Abstract
Background Patients with human epidermal growth factor receptor 2 (HER2)-positive metastatic breast cancer (MBC) with central nervous system (CNS) metastasis have a poor prognosis. We report treatments and outcomes in patients with HER2-positive MBC and CNS metastasis from the Systemic Therapies for HER2-positive Metastatic Breast Cancer Study (SystHERs). Methods SystHERs (NCT01615068) was a prospective, US-based, observational registry of patients with newly diagnosed HER2-positive MBC. Study endpoints included treatment patterns, clinical outcomes, and patient-reported outcomes (PROs). Results Among 977 eligible patients enrolled (2012-2016), CNS metastasis was observed in 87 (8.9%) at initial MBC diagnosis and 212 (21.7%) after diagnosis, and was not observed in 678 (69.4%) patients. White and younger patients, and those with recurrent MBC and hormone receptor-negative disease, had higher risk of CNS metastasis. Patients with CNS metastasis at diagnosis received first-line lapatinib more commonly (23.0% vs. 2.5%), and trastuzumab less commonly (70.1% vs. 92.8%), than patients without CNS metastasis at diagnosis. Risk of death was higher with CNS metastasis observed at or after diagnosis (median overall survival [OS] 30.2 and 38.3 months from MBC diagnosis, respectively) versus no CNS metastasis (median OS not estimable; hazard ratio 2.86 [95% confidence interval 2.05-4.00] and 1.94 [95% confidence interval 1.52-2.49]). Patients with versus without CNS metastasis at diagnosis had lower quality of life at enrollment. Conclusions Despite advances in HER2-targeted treatments, patients with CNS metastasis continue to have a poor prognosis and impaired quality of life. Observation of CNS metastasis appears to influence HER2-targeted treatment choice.
PMID: 30593513 [PubMed - as supplied by publisher]
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Increases in Tumor N-glycan Polylactosamines Associated with Advanced HER2 Positive and Triple Negative Breast Cancer Tissues.
| Related Articles |
Increases in Tumor N-glycan Polylactosamines Associated with Advanced HER2 Positive and Triple Negative Breast Cancer Tissues.
Proteomics Clin Appl. 2018 Dec 28;:e1800014
Authors: Scott DA, Casadonte R, Cardinali B, Spruill L, Mehta AS, Carli F, Simone N, Kriegsmann M, Mastro LD, Kriegsmann J, Drake RR
Abstract
Using a recently developed matrix-assisted laser desorption/ionization imaging mass spectrometry (MALDI-IMS) method, we have spatially profiled N-linked glycans in human breast cancer formalin-fixed paraffin-embedded (FFPE) tissue sections and tissue microarrays (TMA). Routinely, 50 or more individual N-glycan species are detected per FFPE tissue, and this number increases significantly with disease severity. Through the combined analysis of breast cancer FFPE tissues and TMAs we have been able to identify histopathology co-localized glycan structural classes specific to stromal, necrotic and tumor regions. N-glycan panels derived from TMAs representing HER2 receptor positive and triple negative breast cancers were compared to identify shared and divergent glycosylation patterns between the two genetic sub-types. Within the tissues, we have identified a series of high-mannose glycans that are predominantly associated with tumor regions, as well as more highly branched and fucosylated glycans in higher grade tumors. In addition to this, we also found a series of polylactosamine glycans with increasing expression in HER2+, triple negative and metastatic breast cancers. The expression of these polylactosamine glycans could provide further mechanistic insights into the development and spread of breast cancer, and provide new research directions for identifying prognostic markers. This article is protected by copyright. All rights reserved.
PMID: 30592377 [PubMed - as supplied by publisher]
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HSP90 inhibitor, AUY922, debilitates intrinsic and acquired lapatinib-resistant HER2-positive gastric cancer cells.
| Related Articles |
HSP90 inhibitor, AUY922, debilitates intrinsic and acquired lapatinib-resistant HER2-positive gastric cancer cells.
BMB Rep. 2018 Dec;51(12):660-665
Authors: Park KS, Hong YS, Choi J, Yoon S, Kang J, Kim D, Lee KP, Im HS, Lee CH, Seo S, Kim SW, Lee DH, Park SR
Abstract
Human epidermal growth factor receptor 2 (HER2) inhibitors, such as trastuzumab and lapatinib are used to treat HER2-positive breast and gastric cancers. However, as with other targeted therapies, intrinsic or acquired resistance to HER2 inhibitors presents unresolved therapeutic problems for HER2-positive gastric cancer. The present study describes investigations with AUY922, a heat shock protein 90 (HSP90) inhibitor, in primary lapatinib-resistant (ESO26 and OE33) and lapatinib-sensitive gastric cancer cells (OE19, N87, and SNU-216) harboring HER2 amplification/over-expression. In order to investigate whether AUY922 could overcome intrinsic and acquired resistance to HER2 inhibitors in HER2-positive gastric cancer, we generated lapatinib-resistant gastric cancer cell lines (OE19/LR and N87/LR) by continuous exposure to lapatinib in vitro. We found that activation of HER2 and protein kinase B (AKT) were key factors in inducing intrinsic and acquired lapatinib-resistant gastric cancer cell lines, and that AUY922 effectively suppressed activation of both HER2 and AKT in acquired lapatinib-resistant gastric cancer cell lines. In conclusion, AUY922 showed a synergistic anti-cancer effect with lapatinib and sensitized gastric cancer cells with intrinsic resistance to lapatinib. Dual inhibition of the HSP90 and HER2 signaling pathways could represent a potent therapeutic strategy to treat HER2-positive gastric cancer with intrinsic and acquired resistance to lapatinib. [BMB Reports 2018; 51(12): 660-665].
PMID: 30591093 [PubMed - in process]
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Massive Pulmonary Embolism as the Initial Presentation of Acromegaly: Is Acromegaly a Hypercoagulable Condition?
| Related Articles |
Massive Pulmonary Embolism as the Initial Presentation of Acromegaly: Is Acromegaly a Hypercoagulable Condition?
Am J Case Rep. 2018 Dec 29;19:1541-1545
Authors: Elarabi AM, Mosleh E, Alamlih LI, Albakri MM, Ibrahim WH
Abstract
BACKGROUND The clinical presentation in acromegaly is usually insidious, with headaches or visual disturbances being the most common symptoms. Previous studies have shown higher fibrinogen levels, lower protein C and S activity values, and enhanced platelet function in patients with acromegaly compared to a normal population. Nevertheless, the link between hypercoagulability and acromegaly is often overlooked and rarely reported in the literature. CASE REPORT We report a case of a young man with a massive pulmonary embolism as the initial presentation of acromegaly. Extensive workup excluded other causes of thrombophilia. Furthermore, the diagnosis of acromegaly was confirmed by the patient's clinical features as well as laboratory and radiological testing. A literature review on the link between hypercoagulability and acromegaly was performed. CONCLUSIONS This case report shed light on hypercoagulability as an under-recognized serious complication of acromegaly and paves the road for future studies on this topic.
PMID: 30593586 [PubMed - in process]
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An Evaluation of the Clinical and Histological Effects of High Dose Radiosurgery on the Rat Dorsal Root Ganglion.
An Evaluation of the Clinical and Histological Effects of High Dose Radiosurgery on the Rat Dorsal Root Ganglion.
World Neurosurg. 2018 Dec 26;:
Authors: Goldschmidt E, Fellows-Mayle W, Paschel EE, Niranjan A, Flickinger JC, Lunsford LD, Gerszten PC
PMID: 30593969 [PubMed - as supplied by publisher]
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MRI Parameters and Their Impact on the Survival of Patients with Glioblastoma: Tumor Perfusion Predicts Survival.
MRI Parameters and Their Impact on the Survival of Patients with Glioblastoma: Tumor Perfusion Predicts Survival.
World Neurosurg. 2018 Dec 26;:
Authors: Hou BL, Wen S, Katsevman GA, Liu H, Urhie O, Turner RC, Carpenter J, Bhatia S
Abstract
BACKGROUND: Many prognostic factors influence the overall survival (OS) of patients with glioblastoma. Despite gross total resection and Stupp protocol adherence, many patients have poor survival. Magnetic resonance (MR) perfusion imaging may assist in diagnosis, treatment monitoring, and prognostication.
METHODS: This is a retrospective study of 36 patients with glioblastoma assessing pre-operative MR parameters reflecting tumor cell density and vascularity, as well as patient age, on overall survival.
RESULTS: The area under curve (AUC) based on optimal Receiver Operating Characteristic (ROC) curves for perfusion parameters Normalized Relative Tumor Blood Volume (n_rTBV) and Normalized Relative Tumor Blood Flow (n_rTBF) were 0.92 and 0.89, respectively, and the highest among all imaging parameters and age. OS showed strongly negative correlations with n_rTBV_c (R=-0.70; p<0.001) and n_rTBF (R=-0.67; p< 0.001). The Cox model, which included age and imaging parameters, demonstrated that n_rTBV and n_rTBF were most predictive of OS, with hazard ratios of 5.97 (p=0.0001) and 8.76 (p=0.0001), respectively, compared to 1.63 (p=0.19) for age. Eighteen patients with n_rTBV_c≤2.5 (best cutoff value) had a median OS of 15.1 months (confidence interval (CI): 11.34-21.25), compared to 2.8 months (95% CI: 1.48-4.03; p<0.001) for 18 patients with n_rTBV_c>2.5. Twenty-four patients with n_rTBF≤2.79 had a median OS of 12 months (95% CI: 10.46-17.9), compared to 2.8 months for 12 patients with n_rTBF>2.79 (95% CI: 1.31-4.2; p<0.001).
CONCLUSION: The dominant predictors of OS are normalized perfusion parameters n_rTBV and n_rTBF. Pre-operative perfusion imaging may be used as a surrogate to predict glioblastoma aggressiveness and survival independent of treatment.
PMID: 30593971 [PubMed - as supplied by publisher]
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Implementation of intraoperative computed tomography for deep brain stimulation: pitfalls and optimization of workflow, accuracy, and radiation exposure.
Implementation of intraoperative computed tomography for deep brain stimulation: pitfalls and optimization of workflow, accuracy, and radiation exposure.
World Neurosurg. 2018 Dec 26;:
Authors: Carl B, Bopp M, Gjorgjevski M, Oehrn C, Timmermann L, Nimsky C
Abstract
OBJECTIVE: Deep brain stimulation (DBS) is an effective treatment for movement disorders. Stereotactic electrode placement can be guided by intraoperative imaging, which also allows an immediate intraoperative quality control. This paper is about implementation and refining a workflow applying intraoperative computed tomography (iCT) for DBS.
METHODS: 18 patients underwent DBS with bilateral implantation of directional electrodes applying a 32-slice movable CT scanner in combination with microelectrode recording.
RESULTS: iCT led to a significant decrease in overall procedural time, despite performing multiple scans. In three of the initial 5 cases iCT caused an adjustment of the final electrodes demonstrating the learning curve and the necessity to integrate road mapping for the exchange of microelectrode to final electrode. Implementation of low-dose CT protocols added microelectrode iCT to the refined workflow, resulting in an intraoperative adjustment of a trajectory in one patient. Low-dose protocols lowered the total effective dose to 1.15 mSv, i.e. a reduction by a factor of 3.5 compared to a standard non-iCT DBS procedure, despite repeated iCTs. Intraoperative lead detection based on final iCT revealed a radial error of 1.04 ± 0.58 mm and a vector error of 2.28 ± 0.97 mm compared to the preoperative planning, adjusted by the findings of microelectrode recording.
CONCLUSIONS: iCT can be easily integrated into the surgical workflow resulting in an overall efficient time saving procedure. Repeated intraoperative scanning ensures reliable electrode placement, while low-dose scanning protocols prevent extensive radiation exposure. iCT of microelectrodes is feasible and led to an adjustment of one electrode.
PMID: 30593970 [PubMed - as supplied by publisher]
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Frontal Sinus Repair Using Polymethyl Methacrylate After Bifrontal Craniotomy.
Frontal Sinus Repair Using Polymethyl Methacrylate After Bifrontal Craniotomy.
World Neurosurg. 2018 Dec 27;:
Authors: Matsuura J, Otsuka T, Nakagawa T, Kai K
Abstract
BACKGROUND: In many cases where bifrontal craniotomy is performed, the frontal sinus is opened and postoperative complications occur. Various methods to close the frontal sinus have been reported. However, all these methods require skills to perform and take time. This study was conducted to report the good results obtained with the closure of the frontal sinus using polymethyl methacrylate, which is a simpler method.
METHOD: From December 2008 to June 2018, 122 patients with ruptured anterior communicating aneurysm were transported to a facility, 52 of whom consecutively underwent bifrontal craniotomy with opening of the frontal sinuses that were filled with polymethyl methacrylate.
RESULTS: The mean follow-up period was 21.8 months. The longest term was 116 months. Complications and cerebrospinal fluid leak were not observed in any case.
CONCLUSION: The method of filling the frontal sinus with PMMA reported in this study is safe and has no complications. Therefore, it needs to be considered as a method of frontal sinus closure.
PMID: 30593968 [PubMed - as supplied by publisher]
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Anatomical variation and hemodynamic evolution of vertebrobasilar arterial system may contribute to the development of vascular compression in hemifacial spasm.
Anatomical variation and hemodynamic evolution of vertebrobasilar arterial system may contribute to the development of vascular compression in hemifacial spasm.
World Neurosurg. 2018 Dec 26;:
Authors: Wang QP, Yuan Y, Xiong NX, Fu P, Huang T, Yang B, Liu J, Chu X, Zhao HY
Abstract
BACKGROUND: Hemifacial spasm (HFS) is caused by vascular compression of the facial nerve. However, the definitive mechanism of offending vessel formation remains unclear. The aim of the study was to explore whether the anatomical and hemodynamic characteristics of the vertebral-basilar artery play a role in problematic vessel formation in HFS.
METHODS: Imaging data of 341 patients with a HFS who underwent microvascular decompression were reviewed retrospectively and compared with 360 controls. The hemodynamics of typical anatomical variations of the vertebral artery (VA) were analyzed using computational fluid dynamics (CFD) software.
RESULTS: Asymmetry of the left and right VAs was prevalent, and the left VA was the most dominant VA. A dominant VA was more prevalent in the HFS group than in the control group (p=0.026). A Left HFS had a significantly higher proportion of a left dominant VA, and a right HFS had a significantly higher proportion of right dominant VA (p<0.001). CFD models showed that angulation and tortuosity of vessels caused remarkable pressure difference between vascular walls of opposite sides. Dynamic clinical observations showed the mode of vessel transposition coincided with biomechanical characteristics.
CONCLUSION: Anatomical variations and hemodynamics of the vertebrobasilar arterial system are likely to contribute to vascular compression formation in a HFS.
PMID: 30593967 [PubMed - as supplied by publisher]
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Neuroprotective effects of tocilizumab on experimentally induced spinal cord ischemia-reperfusion injury.
Neuroprotective effects of tocilizumab on experimentally induced spinal cord ischemia-reperfusion injury.
World Neurosurg. 2018 Dec 26;:
Authors: Karatas Y, Erdi MF, Kaya B, Keskin F, Cüce G, Kılınc I, Uyar M, Izci EK, Kalkan E
Abstract
STUDY DESIGN: Experimental rabbit spinal cord ischemia-reperfusion (I/R) inury model.
OBJECTIVES: We aimed to evaluate neuroprotective effects of tocilizumab on spinal cord I/R inury.
SETTING: Animal Research Laboratory, Necmettin Erbakan University, Meram School of Medicine, Konya, Turkey.
METHODS: Twenty four adult New Zealand rabbits were randomly divided into three groups: Group 1, control group (n=8); Group 2, ischemia-reperfusion (I/R) group and group 3 (n=8), I/R injury+ tocilizumab (4 mg/kg,ip) treatment group. Spinal cord I/R injury was performed by infrarenal aortic cross clamping. Neurological evaluation, spinal cord tissue and plasma tumor necrosis factor (TNF) alpha, total antioxidant status (TAS), total oxidant status (TOS), thiobarbituric acid reactive substances (TBARS), interleukin 6 (IL 6), interleukin 10 (IL 10) levels were analyzed. Spinal cord neuronal damage score and apoptotic cell count were also investigated.
RESULTS: I/R injury significantly increase the plasma and spinal cord tissue TNF alpha, TOS, TBARS, IL6 levels and decrease the plasma and spinal cord tissue TAS and IL10 levels. Tocilizumab treatment significantly reduce the plasma and spinal cord tissue TNF alpha, TOS, TBARS, IL6 levels and increase plasma and tissue TAS and IL10 levels. I/R injury significantly increase spinal cord neuronal damage score and apoptotic cell count. Tocilizumab treatment significantly reduce spinal cord neuronal damage score and apoptotic cell count. Neurological examination scores at 24., 48. and 72. hours were significantly better in treatment group when compared with the I/R group.
CONCLUSION: This study shows significant neuroprotective effects of tocilizumab on rabbit spinal cord I/R injury.
PMID: 30593966 [PubMed - as supplied by publisher]
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Lead failure after vagus nerve stimulation implantation: X-ray examination and revision surgery.
Lead failure after vagus nerve stimulation implantation: X-ray examination and revision surgery.
World Neurosurg. 2018 Dec 26;:
Authors: Zhou H, Liu Q, Zhao C, Ma J, Ye X, Xu J
Abstract
OBJECTIVE: This study aimed to assess the most common types of lead failures, identify causes and discuss potential procedures for revision surgery following vagus nerve stimulator implantation in epilepsy patients.
METHODS: In a retrospective study over an 8-year period, 13 patients underwent revision surgery due to lead failure. Lead failure was classified as either lead intrinsic damage or lead pin disengagement from the generator header. In the X-ray image, the authors defined an RC ratio that represented the portion of rear lead connector in the header receptacle. It was used to quantitatively evaluate the mechanical failure of the lead-header interface. Optimal procedures to identify and manage lead failure were established.
RESULTS: All 13 patients presented with high lead impedance ≥ 9 kOhms at the time of revision. Seven of ten patients with lead damage presented with increased seizure frequency after a period of seizure remission. In contrast to lead damages occurring relatively late (> 15 months), lead pin disengagement was usually found within the early months after device implantation. A significant association was found between an elevated RC ratio (≥ 35%) and lead pin disengagement. The microsurgical technique permitted the removal or replacement of the lead without adverse effects.
CONCLUSIONS: The method of measuring the RC ratio developed in this study is feasible for identifying lead disengagement at the generator level. Lead revision was an effective and safe procedure for patients experiencing lead failure.
PMID: 30593965 [PubMed - as supplied by publisher]
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Does surgical start time or weekend presentation affect clinical outcome for those presenting with neurosurgical pathology?
Does surgical start time or weekend presentation affect clinical outcome for those presenting with neurosurgical pathology?
World Neurosurg. 2018 Dec 26;:
Authors: Linzey JR, Pandey AS
PMID: 30593964 [PubMed - as supplied by publisher]
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Coil embolization for cerebral aneurysms using a semi-jailing technique and open-cell stent.
Coil embolization for cerebral aneurysms using a semi-jailing technique and open-cell stent.
World Neurosurg. 2018 Dec 26;:
Authors: Shirakawa M, Yoshimura S, Uchida K, Yamada K, Sakamoto D, Iida T, Takada Y, Ishikura R
PMID: 30593963 [PubMed - as supplied by publisher]
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Development and validation of prognostic model for patients with acute subdural hematoma-a reliable nomogram.
Development and validation of prognostic model for patients with acute subdural hematoma-a reliable nomogram.
World Neurosurg. 2018 Dec 26;:
Authors: Jin XQ, Du XF, Yang MF, Zhang Q
Abstract
OBJECTIVE: By extracting clinical and CT imaging data of patients with acute subdural hematoma (ASDH) , factors that were significantly associated with poor prognosis were screened and a nomogram model was established and validated.
METHODS: All patients with ASDH who underwent subdural hematoma removal and decompressive craniectomy from January 2014 to March 2018 in Qinghai Provincial People's Hospital were continuously collected. Finally 124 patients were included in the study. According to Glasgow Outcome Scale at 3 months after operation, patients were divided into good prognosis group and poor prognosis group.
RESULTS: Univariate and binary logistic regression analysis were performed to screen out independent predictors that were significantly associated with poor prognosis of ASDH. Based on these factors, a nomogram model was established.
CONCLUSION: The nomogram model had high accuracy for predicting the poor prognosis in patients with ASDH and it was easy to promote. In the future, large sample and multi-center prospective studies are necessary to complement and identify the results.
PMID: 30593962 [PubMed - as supplied by publisher]
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Vertebral Body Rotation in Patient of Lumbar Degenerative Scoliosis; Surgical Implication for Oblique Lumbar Interbody Fusion (OLIF).
Vertebral Body Rotation in Patient of Lumbar Degenerative Scoliosis; Surgical Implication for Oblique Lumbar Interbody Fusion (OLIF).
World Neurosurg. 2018 Dec 26;:
Authors: Kim DB, Shin MH, Kim JT
Abstract
BACKGROUND: To investigate changes of oblique corridor in patients with lumbar degenerative scoliosis (LDS) and determine proper working angle with respect to the direction of vertebral axial rotation during oblique lumbar interbody fusion (OLIF) procedure.
METHODS: Distance of oblique corridor and rotational angle of the left or right apex group were measured on axial T2 MR images and then compared with those of propensity score-matched control group.
RESULTS: Fifty-five patients of the left apex group and 57 patients of the right apex group were compared with equal number of patients of the propensity score-matched control group. The distance of oblique corridor in the left apex group was shorter than that in the control group at levels of L1-2 and L2-3. In contrast, the distance of oblique corridor in the right apex group was longer than that of the control group at level of L2-3. Patients of the left apex group showed vertebral body rotating to the left side from L1-2 to L5-S1 while in the right apex group, the vertebral body rotated to the right side at level of L1-2, L2-3, and L3-4.
CONCLUSIONS: In the left apex group, the oblique corridor was decreased from psoas overlap and coupled axial rotation to the left side might increase the risk of contralateral nerve root injury during orthogonally working. Thus, surgeons should pay attention to the state of coupled vertebral axial rotation of LDS for OLIF procedure.
PMID: 30593961 [PubMed - as supplied by publisher]
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The Role of Collateral Circulation in Branch Vessel Occlusion After Flow Diversion.
The Role of Collateral Circulation in Branch Vessel Occlusion After Flow Diversion.
World Neurosurg. 2018 Dec 26;:
Authors: Raymond SB, Koch MJ, Rabinov JD, Leslie-Mazwi TM, Torok CM, Stapleton CJ, Patel AB
Abstract
OBJECTIVE: Flow diversion for treatment of intracranial aneurysms frequently necessitates covering adjacent branch vessels. Although branch vessel occlusion is common, associated clinical deficits are rare. We and others hypothesize that clinically silent branch vessel occlusion is due to underlying collateral circulation. To study the role of collateral circulation in covered branch vessel occlusion, we assessed collateral vessels and altered branch vessel flow on transfemoral catheter angiography in patients undergoing flow diversion of intracranial aneurysms.
METHODS: Pre-treatment, immediate post-treatment and interval follow-up angiograms were evaluated for branch vessel flow patterns and associated collateral circulation in a consecutive retrospective cohort of 84 patients from 2011-2017 with branch vessel coverage related to aneurysm flow diversion using the Pipeline Embolization Device (PED, Medtronic, Minneapolis, MN, USA).
RESULTS: We identified 142 branch vessels covered by the PED construct for treatment of 89 aneurysms, predominately in the anterior circulation (>90%). Collateral circulation was observed in roughly a third of these vessels and was associated with diminished (P < .001) or absent (P < .001) flow on follow-up angiography. Only 2 of 80 terminal branch vessels (no collaterals) were occluded, and those occurred in a patient with PED construct thrombosis. Altered branch vessel flow was not associated with vascular risk factors, treatment technique, or outcome measures, including new or worsening neurologic deficit.
CONCLUSIONS: Altered flow in branch vessels covered during flow diversion reflects underlying collateral circulation and is not associated with downstream ischemic deficits.
PMID: 30593960 [PubMed - as supplied by publisher]
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Utility of cervical collars following cervical fusion surgery; does it improve fusion rates or outcomes? A systematic review.
Utility of cervical collars following cervical fusion surgery; does it improve fusion rates or outcomes? A systematic review.
World Neurosurg. 2018 Dec 26;:
Authors: Karikari I, Ghogawala Z, Ropper A, Yavin D, Gabr M, Goodwin CR, Abd-El-Barr M, Veeravagu A, Wang MC
PMID: 30593959 [PubMed - as supplied by publisher]
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Summary Low-fidelity, simulation-based psychomotor skills training is a valuable first step in the educational approach to mastering com...
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Here we report on the treatment of a 38-year-old woman with primary cutaneous γδT-cell lymphoma, which is a rare subset of cutaneous T-cell ...
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Medicine by Alexandros G. Sfakianakis,Anapafseos 5 Agios Nikolaos 72100 Crete Greece,00302841026182, Treatment of basilar artery stenosis w...
