Abstract
Context: It has been found that many proteins from silkworm (Bombyx mori L.) fecal matter have been active against human immunodeficiency virus, Sendai virus, herpes simplex virus type-1, and nuclear polyhedrosis virus.Objective: A partially purified 35 kDa protein from silkworm was screened for its hepatoprotective activity, and in vitro antioxidant, and antiviral properties against camelpox and goatpox viruses.Materials and methods: The study investigated the efficiency of the partially purified 35kDa protein from silk worm fecal matter against CCl4-induced liver damage measured in terms of enzyme levels such as aspartate aminotransferase (AST), alanine amino transferase(ALT), alkaline phosphatase (ALP) and total bilirubin, which maintain liver integrity. In vitro antioxidant potential of this protein was determined based on its ability to scavenge 2, 2-diphenylpicrylhydrazyl (DPPH) and superoxide anions scavenging activity. Further, in vitro cytotoxic effect on Vero cells and antiviral activity against goatpox and camelpox viruses were also studied.Results: The protein had significant hepatoprotection against CCl4-induced liver damage and scavenging of DPPH radical and superoxide anion activity. However, the protein did not inhibit the multiplication of either virus tested at its maximum non-toxic concentration (MNTC) in vitro.Discussion and conclusion: The partially purified 35 kDa protein from silk worm Bombyx mori L fecal matter possessed protective effect against CCl4-induced oxidative stress in rat model. The protein was found to be ineffective against camelpox and goatpox viruses at its MNTC in vitro.
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