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Δευτέρα 7 Ιουνίου 2021

Addition of bromelain and acetylcysteine to gemcitabine potentiates tumor inhibition in vivo in human colon cancer cell line LS174T

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Am J Cancer Res. 2021 May 15;11(5):2252-2263. eCollection 2021.

ABSTRACT

The combinations of Bromelain and Acetylcysteine (BromAc®) with cytotoxics such as Gemcitabine, 5-Fluorouracil or Oxaliplatin have shown a dramatic reduction in IC50 values in a variety of cancers, including colon cancer, suggesting the possibility of effective treatment without undesired side effects. In the current study, we investigated whether a similar effect is present in vivo using the colorectal cell line LS174T. Animals after acclimatization were randomized and allocated equally in the groups for the different studies (safety, dose-escalation, and efficacy). Drugs were delivered by the intraperitoneal route and animals were monitored for wellbeing. Separately, an efficacy study was conducted with intraperitoneal drug delivery after intraperitoneal tumor induction. At the termination of the experiment, tumors and other tissues were colle cted for evaluation. BromAc® was safe when delivered intraperitoneally in a rat model at the concentrations used. Subsequent investigations of these adjuvants in combination with Gemcitabine, Oxaliplatin, and 5-Fluorouracil in mice were also proven to be safe. Preliminary efficacy studies with Oxaliplatin and 5-Fluorouracil on tumor growth (LS174T) were negative. Gemcitabine was assessed with BromAc® showing an almost 71% tumor inhibition compared to controls. This in vivo study indicates that Gemcitabine at 2 mg/kg in combination with BromAc® 3 mg/300 mg/Kg was effective and safe, supporting its potential for future clinical application.

PMID:34094682 | PMC:PMC8167695

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Medicine by Alexandros G. Sfakianakis,Anapafseos 5 Agios Nikolaos 72100 Crete Greece,00302841026182,00306932607174,alsfakia@gmail.com,

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