Inhibition of Herpes Simplex Virus Replication by Cobra -Neurotoxoid

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Abstract
Summary A peptide, prepared by gentle oxidative detoxification of a methionine-free cobra α-neurotoxin, was evaluated for antiviral activities in vivo and in vitro. When added to BHK cells before infection the peptide reduced herpes simplex virus type 1 (HSV-1)-induced TCD50 in a dose- and time-dependent manner. The antiviral effect was also expressed on initiation of cell treatment 1 h after infection if the peptide was left in contact with cells. Single, intracerebral doses of the toxoid in suckling mice significantly increased 50% survival times, and reduced virus replication in the infected brain tissues. Cutaneous lesions and resultant scar formation induced by HSV-1 in hairless mice were also significantly reduced by subcutaneous peptide injections.

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