Αρχειοθήκη ιστολογίου

Τρίτη 27 Ιουνίου 2017

The Complexity of Simple – Bringing Order to Complex Systems by Chris Hicks

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  The ability to simplify means to eliminate the unnecessary so that the necessary may speak –Hans Hofmann We live in complex times.  Resuscitation has gone endovascular, microvascular, mitochondrial.  EPR, ED-ECMO, REBOA–it's a fascinating time to be a Resuscitationist.  But the more we advance the resuscitation agenda, the more we learn how complex critical illness […]

EMCrit by Chris Hicks.



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A population level atlas of Mus musculus craniofacial skeleton and automated image-based shape analysis

Abstract

Laboratory mice are staples for evo/devo and genetics studies. Inbred strains provide a uniform genetic background to manipulate and understand gene–environment interactions, while their crosses have been instrumental in studies of genetic architecture, integration and modularity, and mapping of complex biological traits. Recently, there have been multiple large-scale studies of laboratory mice to further our understanding of the developmental basis, evolution, and genetic control of shape variation in the craniofacial skeleton (i.e. skull and mandible). These experiments typically use micro-computed tomography (micro-CT) to capture the craniofacial phenotype in 3D and rely on manually annotated anatomical landmarks to conduct statistical shape analysis. Although the common choice for imaging modality and phenotyping provides the potential for collaborative research for even larger studies with more statistical power, the investigator (or lab-specific) nature of the data collection hampers these efforts. Investigators are rightly concerned that subtle differences in how anatomical landmarks were recorded will create systematic bias between studies that will eventually influence scientific findings. Even if researchers are willing to repeat landmark annotation on a combined dataset, different lab practices and software choices may create obstacles for standardization beyond the underlying imaging data. Here, we propose a freely available analysis system that could assist in the standardization of micro-CT studies in the mouse. Our proposal uses best practices developed in biomedical imaging and takes advantage of existing open-source software and imaging formats. Our first contribution is the creation of a synthetic template for the adult mouse craniofacial skeleton from 25 inbred strains and five F1 crosses that are widely used in biological research. The template contains a fully segmented cranium, left and right hemi-mandibles, endocranial space, and the first few cervical vertebrae. We have been using this template in our lab to segment and isolate cranial structures in an automated fashion from a mixed population of mice, including craniofacial mutants, aged 4–12.5 weeks. As a secondary contribution, we demonstrate an application of nearly automated shape analysis, using symmetric diffeomorphic image registration. This approach, which we call diGPA, closely approximates the popular generalized Procrustes analysis (GPA) but negates the collection of anatomical landmarks. We achieve our goals by using the open-source advanced normalization tools (ANT) image quantification library, as well as its associated R library (ANTsR) for statistical image analysis. Finally, we make a plea to investigators to commit to using open imaging standards and software in their labs to the extent possible to increase the potential for data exchange and improve the reproducibility of findings. Future work will incorporate more anatomical detail (such as individual cranial bones, turbinals, dentition, middle ear ossicles) and more diversity into the template.



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Rheumatoid nodule on cytology



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Rheumatoid nodule on cytology



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Sculptors, Architects, and Painters Conceive of Depicted Spaces Differently

Abstract

Sculptors, architects, and painters are three professional groups that require a comprehensive understanding of how to manipulate spatial structures. While it has been speculated that they may differ in the way they conceive of space due to the different professional demands, this has not been empirically tested. To achieve this, we asked architects, painters, sculptors, and a control group questions about spatially complex pictures. Verbalizations elicited were examined using cognitive discourse analysis. We found significant differences between each group. Only painters shifted consistently between 2D and 3D concepts, architects were concerned with paths and spatial physical boundedness, and sculptors produced responses that fell between architects and painters. All three differed from controls, whose verbalizations were generally less elaborate and detailed. Thus, for the case of sculptors, architects, and painters, profession appears to relate to a different spatial conceptualization manifested through a systematically contrasting way of talking about space.



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Working night shifts reduces repair of DNA damage, study suggests

Working at night is associated with reduced repair of DNA damage, shows an observational study of healthcare shift workers that suggests that this effect was driven by suppression of melatonin.1The...

recent?d=yIl2AUoC8zA recent?d=dnMXMwOfBR0 recent?i=Uji1bRX2_Y8:P1b2Tg_02lw:V_sGLiP recent?d=qj6IDK7rITs recent?i=Uji1bRX2_Y8:P1b2Tg_02lw:gIN9vFw recent?d=l6gmwiTKsz0 recent?d=7Q72WNTAKBA recent?i=Uji1bRX2_Y8:P1b2Tg_02lw:F7zBnMy recent?i=Uji1bRX2_Y8:P1b2Tg_02lw:-BTjWOF


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Microneedle patch for flu vaccination proves successful in human clinical trial

An influenza vaccine delivered by a dissolvable microneedle patch can produce robust immune responses and be successfully self applied, a human trial published in the Lancet has shown.1The patch,...

recent?d=yIl2AUoC8zA recent?d=dnMXMwOfBR0 recent?i=X_wa_2lq6eg:-Gro0VqBk2Q:V_sGLiP recent?d=qj6IDK7rITs recent?i=X_wa_2lq6eg:-Gro0VqBk2Q:gIN9vFw recent?d=l6gmwiTKsz0 recent?d=7Q72WNTAKBA recent?i=X_wa_2lq6eg:-Gro0VqBk2Q:F7zBnMy recent?i=X_wa_2lq6eg:-Gro0VqBk2Q:-BTjWOF


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Working night shifts reduces repair of DNA damage, study suggests

Working at night is associated with reduced repair of DNA damage, shows an observational study of healthcare shift workers that suggests that this effect was driven by suppression of melatonin.1The...

recent?d=yIl2AUoC8zA recent?d=dnMXMwOfBR0 recent?i=Uji1bRX2_Y8:P1b2Tg_02lw:V_sGLiP recent?d=qj6IDK7rITs recent?i=Uji1bRX2_Y8:P1b2Tg_02lw:gIN9vFw recent?d=l6gmwiTKsz0 recent?d=7Q72WNTAKBA recent?i=Uji1bRX2_Y8:P1b2Tg_02lw:F7zBnMy recent?i=Uji1bRX2_Y8:P1b2Tg_02lw:-BTjWOF


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Microneedle patch for flu vaccination proves successful in human clinical trial

An influenza vaccine delivered by a dissolvable microneedle patch can produce robust immune responses and be successfully self applied, a human trial published in the Lancet has shown.1The patch,...

recent?d=yIl2AUoC8zA recent?d=dnMXMwOfBR0 recent?i=X_wa_2lq6eg:-Gro0VqBk2Q:V_sGLiP recent?d=qj6IDK7rITs recent?i=X_wa_2lq6eg:-Gro0VqBk2Q:gIN9vFw recent?d=l6gmwiTKsz0 recent?d=7Q72WNTAKBA recent?i=X_wa_2lq6eg:-Gro0VqBk2Q:F7zBnMy recent?i=X_wa_2lq6eg:-Gro0VqBk2Q:-BTjWOF


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Ixazomib: A Review in Relapsed and/or Refractory Multiple Myeloma

Abstract

The oral proteasome inhibitor ixazomib (Ninlaro®) is approved in the USA, EU and Japan in combination with lenalidomide and dexamethasone, for the treatment of patients with multiple myeloma (MM) who have received at least one prior therapy. In adults with relapsed and/or refractory MM who had received one to three prior therapies, progression-free survival (PFS) was significantly prolonged in patients who received the ixazomib- versus placebo-based triple therapy in the pivotal, global TOURMALINE-MM1 trial and its regional expansion (China continuation study). A significantly longer time to progression and favourable hazard ratios for PFS were observed across all prespecified subgroups, including patients with high cytogenetic risk. Overall response was achieved in a significantly higher proportion of patients receiving ixazomib- than placebo-based treatment. Ixazomib had a manageable tolerability profile in patients with MM. Ixazomib is the first orally-administered proteasome inhibitor approved for patients with MM, and in combination with lenalidomide and dexamethasone represents an important new option for use in patients with relapsed and/or refractory MM who have previously received at least one prior therapy.

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Relationship between obstructive sleep apnea and neuroimaging signatures of cerebral small vessel disease



Publication date: Available online 27 June 2017
Source:Sleep Medicine
Author(s): Oscar H. Del Brutto, Robertino M. Mera, Mauricio Zambrano, Pablo R. Castillo
Background/Objectives: Evidence of a relationship between obstructive sleep apnea (OSA) and neuroimaging signatures of cerebral small vessel disease (SVD) is limited. The present study aimed to evaluate this association in older adults living in rural Ecuador, where small vessel disease is a major pathogenetic mechanism underlying stroke.MethodsA representative random sample of Atahualpa residents aged ≥60 years enrolled in the Atahualpa Project neuroimaging substudy underwent a single-night diagnostic polysomnography. We evaluated whether OSA associates with severity of white matter hyperintensities (WMH), silent lacunar infarctions and deep cerebral microbleeds, using multivariate models adjusted for relevant confounders.ResultsOf 351 candidates, 104 (30%) were randomly selected. Of these, 97 individuals (mean age 72.3±7 years, 65% women) had adequate recordings and were included. Mean apnea/hypopnea index was 13.8 ± 14.1 episodes per hour; 27 persons (28%) had ≥15 episodes per hour and were considered to have moderate-to-severe OSA. Moderate-to-severe WMH were noticed in 25 individuals (25.8%), silent lacunar infarctions in 22 (22.7%) and deep cerebral microbleeds in 12 (12.4%). In multivariate models, OSA was associated with moderate-to-severe WMH (OR: 3.94; 95% C.I.: 1.09 – 14.97; p=0.037), but not with silent lacunar infarctions (p=0.195) or deep cerebral microbleeds (p=0.405). A linear regression model confirmed the independent association between the apnea/hypopnea index and moderate-to-severe WMH (β: -8.81, 95% C.I.: -16.51 to -1.11; p=0.025).ConclusionsIndividuals with moderate-to-severe OSA are almost four times more likely to have diffuse subcortical damage of vascular origin than those with none-to-mild OSA, independently of demographics and cardiovascular risk factors.


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Mohs Mapping Fidelity: Optimizing Orientation, Accuracy, and Tissue Identification in Mohs Surgery.

Mohs Mapping Fidelity: Optimizing Orientation, Accuracy, and Tissue Identification in Mohs Surgery.: BACKGROUND: Mohs micrographic surgery (MMS) is a highly effective process that requires consistent accuracy in resection, mapping, and histologic interpretation. Although the general sequence in MMS is similar, there are numerous variations among Mohs surgeons as to how this process is performed.

OBJECTIVE: This article aims to review the process of MMS, with the intent to identify and mitigate the potential errors at each step. Existing variations will be discussed and protocols offered to minimize error and optimize accuracy.

METHODS: A Pubmed search was performed for publications on methods of tissue mapping, orienting, and processing in MMS.

RESULTS: Our literature review highlights various techniques for tissue orientation, transfer, flattening, inking, mapping, and processing of later stages and multiple specimens. We discuss our system, which reduces error during tissue transfer, tissue identification in vivo and ex vivo, and tissue flattening. Furthermore, we discuss adaptations to increase the accuracy during reexcisions of subsequent Mohs layers.

CONCLUSION: Variations in MMS reflects the diverse training and creativity among Mohs surgeons. Unless potential errors are addressed, however, false negatives will occur and undermine the superior cure rate of MMS.

(C) 2017 by the American Society for Dermatologic Surgery, Inc. Published by Wolters Kluwer Health, Inc. All rights reserved.




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Detection of High-Risk Histologic Features and Tumor Upstaging of Nonmelanoma Skin Cancers on Debulk Analysis

: A Quantitative Systematic Review.: BACKGROUND: Histologic analysis of tumor debulks from Mohs micrographic surgery (MMS) or wide local excision may lead to the detection of adverse features missed on initial biopsy.

OBJECTIVE: Determine the incidence of (1) high-risk features on debulk analysis compared with initial biopsy and (2) upstaging of tumors on debulk analysis according to the American Joint Committee of Cancer-7th Edition (AJCC-7) and the Brigham and Women's Alternative (BWH) staging criteria.

MATERIALS AND METHODS: A comprehensive search strategy using PubMed/MEDLINE, Web of Science, and EMBASE was conducted to identify articles published from 1960 to present that detail histology of initial biopsy and debulked tumor.

RESULTS: Fourteen studies, encompassing 2,565 cases of basal cell carcinoma (BCC) and squamous cell carcinoma (SCC) were included in the data extraction process. BCCs (30.9%) were reclassified from a low-risk histologic subtype to a high-risk subtype on debulk analysis (p




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Microcystic adnexal carcinoma (MAC) is a rare, locally aggressive cutaneous neoplasm that commonly occurs on the face.


από Gordon, Shayna; Fischer, Caroline; Martin, Ann; Rosman, Ilana S.; Council, M. Laurin στο Dermatologic Surgery - Published Ahead-of-Print
OBJECTIVE: The purpose of this article is to comprehensively review the current literature on MAC pertaining to epidemiology, pathogenesis, clinical presentation, histology, immunohistochemistry, prognosis, follow-up, and treatment. MATERIALS AND METHODS: An extensive literature review was conducted using OVID MEDLINE and PubMed to identify articles relating to MAC. RESULTS: Microcystic adnexal carcinoma typically presents as a skin-colored nodule on the face. The pathogenesis is mostly related to pilar and eccrine differentiation. Histologically, MAC can mimic syringoma, desmoplastic trichoepithelioma, and infiltrative basal cell carcinoma. Diagnosis is challenging because superficial shave biopsies may reveal only benign findings that do not warrant further management. A deep biopsy is mandatory for the correct diagnosis, and Mohs micrographic surgery provides the highest cure rate. CONCLUSION: Microcystic adnexal carcinoma is a locally aggressive disease with histological margins that often far surpass what is clinically suspected. Mohs micrographic surgery is the standard of care for removal of these lesions. Patients with a history of MAC should be examined at least every 6 months for recurrence, metastasis, and development of additional skin cancers. (C) 2017 by the American Society for Dermatologic Surgery, Inc. Published by Wolters Kluwer Health, Inc. All rights reserved.


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Chemotherapy-induced cardiomyopathy caused by Pemetrexed

Summary

Chemotherapy-related cardiac toxicity is a rare but serious adverse event in patients with cancer. Thus far, no case of serious cardiac toxicity of pemetrexed has been reported. We describe the case of a patient with advanced lung cancer and cardiomyopathy due to pemetrexed. A 59-year-old woman visited our hospital, and we found abnormal findings on a chest radiograph. She was diagnosed as having stage IV lung adenocarcinoma. Chemotherapy with cisplatin and pemetrexed every 3 weeks was initiated. After four cycles of chemotherapy, maintenance chemotherapy with pemetrexed was administered every 3 weeks. During the seventeenth cycle of pemetrexed, she had shortness of breath in her daily life. A chest radiograph showed an enlarged cardiothoracic ratio (66%), and the transthoracic echocardiogram demonstrated expansion of the left ventricle (diastolic diameter, 67 mm), severe global hypokinesis, and reduced left ventricular ejection fraction (28%). The coronary angiogram showed no coronary constriction. There was no delayed accumulation on the contrast-enhanced cardiac magnetic resonance imaging scan. After right heart catheterization, pathological results of a myocardial biopsy from the ventricular septum indicated no cardiac muscle hypertrophy, cardiac fibrosis, inflammatory cell infiltration, or myocyte disarray. Eventually, she was diagnosed as having pemetrexed-induced cardiomyopathy. Pemetrexed was discontinued, and furosemide, enalapril, and carvedilol were started. Then her symptoms and cardiac function improved. Early detection and discontinuation of causative agents are the most important treatment strategies in similar patients. Diuretics, angiotensin-conversion enzyme inhibitors, and beta-blockers may be effective for treating heart failure.



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The Traumatic Brain Injury Endpoints Development (TED) Initiative: Progress on a Public-Private Regulatory Collaboration to Accelerate Diagnosis and Treatment of Traumatic Brain Injury

Journal of Neurotrauma , Vol. 0, No. 0.


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Three Year Trends in Veterans Health Administration Utilization and Costs after Traumatic Brain Injury Screening among Veterans with Mild Traumatic Brain Injury

Journal of Neurotrauma , Vol. 0, No. 0.


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Neurodegeneration in the Spinal Ventral Horn Prior to Motor Impairment in Cervical Spondylotic Myelopathy

Journal of Neurotrauma , Vol. 0, No. 0.


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A novel strategy with combined assays for detection of anti-neutrophil cytoplasmic antibody (ANCA) in clinically ANCA-negative granulomatosis with polyangiitis patients

Granulomatosis with polyangiitis (GPA) that is localized to the upper airway presents a diagnostic challenge because of a tendency towards anti-neutrophil cytoplasmic antibody (ANCA)-negativity. The purpose of this study was to investigate whether positivity of ANCA detection might be elicited with combined use of enzyme-linked immunosorbent assay (ELISA) kits.

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Unique Infectious Strategy of H5N1 Avian Influenza Virus Is Governed by the Acid-Destabilized Property of Hemagglutinin

Viral Immunology , Vol. 0, No. 0.


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Relationship between obstructive sleep apnea and neuroimaging signatures of cerebral small vessel disease in community-dwelling older adults. The Atahualpa Project

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Publication date: Available online 27 June 2017
Source:Sleep Medicine
Author(s): Oscar H. Del Brutto, Robertino M. Mera, Mauricio Zambrano, Pablo R. Castillo
Background/Objectives: Evidence of a relationship between obstructive sleep apnea (OSA) and neuroimaging signatures of cerebral small vessel disease (SVD) is limited. The present study aimed to evaluate this association in older adults living in rural Ecuador, where small vessel disease is a major pathogenetic mechanism underlying stroke.MethodsA representative random sample of Atahualpa residents aged ≥60 years enrolled in the Atahualpa Project neuroimaging substudy underwent a single-night diagnostic polysomnography. We evaluated whether OSA associates with severity of white matter hyperintensities (WMH), silent lacunar infarctions and deep cerebral microbleeds, using multivariate models adjusted for relevant confounders.ResultsOf 351 candidates, 104 (30%) were randomly selected. Of these, 97 individuals (mean age 72.3±7 years, 65% women) had adequate recordings and were included. Mean apnea/hypopnea index was 13.8 ± 14.1 episodes per hour; 27 persons (28%) had ≥15 episodes per hour and were considered to have moderate-to-severe OSA. Moderate-to-severe WMH were noticed in 25 individuals (25.8%), silent lacunar infarctions in 22 (22.7%) and deep cerebral microbleeds in 12 (12.4%). In multivariate models, OSA was associated with moderate-to-severe WMH (OR: 3.94; 95% C.I.: 1.09 – 14.97; p=0.037), but not with silent lacunar infarctions (p=0.195) or deep cerebral microbleeds (p=0.405). A linear regression model confirmed the independent association between the apnea/hypopnea index and moderate-to-severe WMH (β: -8.81, 95% C.I.: -16.51 to -1.11; p=0.025).ConclusionsIndividuals with moderate-to-severe OSA are almost four times more likely to have diffuse subcortical damage of vascular origin than those with none-to-mild OSA, independently of demographics and cardiovascular risk factors.



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The Breast Cancer Screening “Arcade” and the “Whack-A-Mole” Efforts to Reduce Access to Screening

The effort to reduce access to breast cancer screening has been going on for decades. As each piece of misinformation has been published, scientific responses have exposed the fallacies, but then new "alternative facts" are generated. The effort has been compared to the arcade game "Whack-a-Mole" in which one false argument is addressed only to have a new one "pop up" to replace it. This has ranged from the false claim that early detection would have no effect on breast cancer, to the fallacious idea that early detection was leading to early deaths among young women, to the more recent false suggestion that tens of thousands of breast cancers found by mammography would disappear if left undetected.

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Neurodegeneration in the Spinal Ventral Horn Prior to Motor Impairment in Cervical Spondylotic Myelopathy

Journal of Neurotrauma , Vol. 0, No. 0.


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The Traumatic Brain Injury Endpoints Development (TED) Initiative: Progress on a Public-Private Regulatory Collaboration to Accelerate Diagnosis and Treatment of Traumatic Brain Injury

Journal of Neurotrauma , Vol. 0, No. 0.


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CASE STUDY: Amber & Fred

Hear about the amazing transformation in Amber & Fred's oral health when they began using my Complete Mouth Care System. Amber overcame extreme anxiety about dental visits and Fred, for the first time in his life, has been commended on his oral health! Curious about my Complete Mouth Care System? Learn more with my free … Continue reading CASE STUDY: Amber & Fred

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Three Year Trends in Veterans Health Administration Utilization and Costs after Traumatic Brain Injury Screening among Veterans with Mild Traumatic Brain Injury

Journal of Neurotrauma , Vol. 0, No. 0.


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Second-line Agents in Pediatric Patients With Autoimmune Hepatitis: A Systematic Review and Meta-analysis

imageBackground and Aims: Ten percent to 20% of children with autoimmune hepatitis (AIH) require second-line therapy to achieve remission. Although current guidelines exist on first-line management, evidence for second-line therapy in treatment-refractory patients is lacking. Our aim was to perform a systematic review and meta-analysis of the efficacy and safety of second-line treatments used in this population. Methods: Electronic and manual searches were used to identify potential studies for inclusion. Studies were selected based on reported response rates to second-line therapies in children who failed response to prednisone and azathioprine. Data extraction and risk of bias assessment were performed independently by 2 reviewers. Meta-analysis using weighted estimate of response rates at 6 months was performed for each treatment option. Heterogeneity was assessed. Results: Fifteen studies of 76 pediatric patients with AIH were included in the review. Overall response rates at 6 months were estimated as 36% for mycophenolate mofetil (MMF) (N = 34, 95% confidence interval [CI] (16–57)), and 50% for tacrolimus (N = 4, 95% CI (0–100%)) and 83% for cyclosporine (N = 15, 95% CI (66%–100%)). Adverse effects were most frequent with cyclosporine (64% experiencing at least 1 adverse effect) followed by tacrolimus (54%) and MMF (48%). Pooled estimates of adverse events were 78% for cyclosporine (95% CI (54%–100%)), 42% for tacrolimus (95% CI (0%–85%)) and 45% for MMF (95% CI (25%–68%)). Sensitivity analyses were not performed due to small sample size. Conclusions: Cyclosporine had the highest response rate at 6 months in children with standard-treatment-refractory AIH; however, it also had the highest rate of adverse events. MMF was the second most efficacious option with a low adverse effect rate.

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Characterizing and Defining “Infantile Liver Failure”

No abstract available

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Allergic Interstitial Nephritis Masquerading as Pyelonephritis in a Pediatric Patient With Crohn Disease

imageNo abstract available

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Pediatric Autoimmune Hepatitis: What Do You Do When First-line Therapy Fails?

No abstract available

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Intestinal Metaplasia of the Esophagus in Children With Esophageal Atresia

imageObjectives: Patients with esophageal atresia/tracheoesophageal fistula (EA-TEF) can develop Barrett esophagus as a long-term consequence of their condition. Intestinal metaplasia (IM), a risk factor for developing adenocarcinoma of the esophagus, has not been well characterized in the pediatric population. Methods: Retrospective review of patients with EA-TEF followed at 3 academic pediatric centers between the years 1997 and 2014. Results: Among 542 children and adolescents, 1.3% (7 patients, 5 girls) were diagnosed with IM based on endoscopy and pathology. Six of the patients had EA-TEF type C, whereas the last patient had a "long gap" type A atresia. Patients were diagnosed with gastric metaplasia either before the IM diagnosis in 4 patients or concomitantly in 3. The median (range) age of diagnosis for gastric metaplasia was 7.9 (range 2–17.2) and for IM 10.9 (2–17.2) years. Gastroesophageal reflux (GER) symptoms were nonspecific. Five patients were on proton pump inhibitor therapy for symptomatic GER at the time of diagnosis of IM. 2 of the 7 patients had previously undergone Nissen fundoplication. One patient, who had undergone a Nissen fundoplication, was restarted on proton pump inhibitor once the diagnosis of IM was made. All patients had repeated endoscopy and dysplasia was not observed with a median follow-up of 1.7 (range 1–4.9) years. Conclusions: IM occurs in patients with EA-TEF, some as young as 2 years. Therefore, early endoscopic surveillance should be considered in this GER-prone population.

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Twelve Novel Mutations in the SLC26A3 Gene in 17 Sporadic Cases of Congenital Chloride Diarrhea

imageObjectives: We aimed to improve the knowledge of pathogenic mutations in sporadic cases of congenital chloride diarrhea (CCD) and emphasize the importance of functional studies to define the effect of novel mutations. Methods: All member 3 of solute carrier family 26 (SLC26A3) coding regions were sequenced in 17 sporadic patients with CCD. Moreover, the minigene system was used to analyze the effect of 2 novel splicing mutations. Results: We defined the SLC26A3 genotype of all 17 patients with CCD and identified 12 novel mutations. Using the minigene system, we confirmed the in silico prediction of a complete disruption of splicing pattern caused by 2 of these novel mutations: the c.971+3_971+4delAA and c.735+4_c.735+7delAGTA. Moreover, several prediction tools and a structure-function prediction defined the pathogenic role of 6 novel missense mutations. Conclusions: We confirm the molecular heterogeneity of sporadic CCD adding 12 novel mutations to the list of known pathogenic mutations. Moreover, we underline the importance, for laboratories that offer molecular diagnosis and genetic counseling, to perform fast functional analysis of novel mutations.

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Early Empiric Antibiotic Use Is Associated With Delayed Feeding Tolerance in Preterm Infants: A Retrospective Analysis

imageABSTRACT: The causative factors of neonatal feeding intolerance are poorly understood, but potentially related to clinical practices such as empiric antibiotic usage. The objective of this study was to evaluate whether early empiric antibiotic exposure negatively affects preterm infants' enteral feeding tolerance. Data from infants without risk factors for sepsis, 500 to 1499 g birth weight and 24 to 34 weeks gestational age were analyzed. The primary outcomes were the empiric antibiotic exposure effects on the infants' total parenteral nutrition usage duration and prevalence of necrotizing enterocolitis (NEC). Among the 901 infants included, 67 were exposed to early empiric antibiotic. A 50% increase in parenteral nutrition usage duration and a 4-fold greater prevalence of NEC was seen in the early empiric antibiotic-exposed neonates, when compared with control infants (P 

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Biomarkers of Environmental Enteric Dysfunction: The Good, the Bad, and the Ugly

No abstract available

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Low Hepatic Tissue Copper in Pediatric Nonalcoholic Fatty Liver Disease

imageObjective: Animal models and studies in adults have demonstrated that copper restriction increases severity of liver injury in nonalcoholic fatty liver disease (NAFLD). This has not been studied in children. We aimed to determine if lower tissue copper is associated with increased NAFLD severity in children. Methods: This was a retrospective study of pediatric patients who had a liver biopsy including a hepatic copper quantitation. The primary outcome compared hepatic copper concentration in NAFLD versus non-NAFLD. Secondary outcomes compared hepatic copper levels against steatosis, fibrosis, lobular inflammation, balloon degeneration, and NAFLD activity score (NAS). Results: The study analysis included 150 pediatric subjects (102 with NAFLD and 48 non-NAFLD). After adjusting for age, body mass index z score, gamma glutamyl transferase, alanine aminotransferase, and total bilirubin, NAFLD subjects had lower levels of hepatic copper than non-NAFLD (P = 0.005). In addition, tissue copper concentration decreased as steatosis severity increased (P 

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Giant Pelvic Cyst in 16-Year-Old Boy With Bloody Diarrhea: Atypical Presentation of Colonic Adenocarcinoma

imageNo abstract available

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