کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6133521 1593468 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Short communicationEvaluation of viral inactivation of pseudorabies virus, encephalomyocarditis virus, bovine viral diarrhea virus and porcine parvovirus in pancreatin of porcine origin
موضوعات مرتبط
علوم زیستی و بیوفناوری ایمنی شناسی و میکروب شناسی ویروس شناسی
پیش نمایش صفحه اول مقاله
Short communicationEvaluation of viral inactivation of pseudorabies virus, encephalomyocarditis virus, bovine viral diarrhea virus and porcine parvovirus in pancreatin of porcine origin
چکیده انگلیسی

Pancreatin is a substance containing enzymes, principally amylase, lipase, and protease. It is obtained from bovine or porcine pancreas and used in the treatment of pancreatic endocrine insufficiency in humans. Regulations and safety concerns mandate viral clearance (virus removal or inactivation) in biopharmaceuticals such as pancreatin. A virus validation study was performed to evaluate virus clearance achieved in the final step of drying under vacuum by testing a panel of four animal viruses: Pseudorabies virus (PRV), Encephalomyocarditis virus (EMCV), Bovine viral diarrhea virus (BVDV), and Porcine parvovirus (PPV). Because of the product's virucidal effect and high cytotoxicity, the starting material was diluted to a ratio of 0.67 g of dried pancreatin resuspended in 13.5 mL of cell culture medium followed by a 50-fold dilution in cell culture medium before spiking. After heating at 60 ± 1 °C for 5 h, the samples were diluted about 5-fold in cell culture medium and titered by the plaque assay method. The virus reduction factor ranged from 5.59 (for PPV) to 7.07 (for EMCV) and no viral plaque was observed, indicating that the process step was effective in the reduction and removal of virus contamination. Though no virus contamination events in pancreatin have been reported to date, evaluation of the production process for its ability to inactivate and/or remove virus contamination, particularly from zoonotic viral agents such as hepatitis E virus and Norovirus considered emerging pathogens, is necessary to ensure the viral safety of animal-derived biopharmaceuticals.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Virological Methods - Volume 208, November 2014, Pages 79-84
نویسندگان
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