acyclovir (9-[2-hydroxyethoxymethyl] guanine) is an acyclic nucleoside analogue of guanosine which is a potent and selective antiviral agent. acycloviris converted to the monophosphate by thymidine kinase the virus-specific form of this enzyme and is subsequently converted to the triphosphate by the host cell kinase. acyclovir triphosphate inhibits viral dna-polymerase terminating the chain and...

(E)-5-(2-Bromovinyl)-2'-deoxyuridine is a potent antiherpes compound with far better activity against herpes simplex virus type 1 than type 2. To understand the role of drug metabolism in this differential antiviral activity, we examined the metabolic fate of this drug in virus-infected and mock-infected Vero cells by high-pressure liquid chromatography. After 8 h of incubation in which cells w...

Topical application of 9-beta-d-arabinofuranosylhypoxanthine 5'-monophosphate (ara-HxMP) significantly inhibited the development of keratitis induced by types 1 and 2 herpes simplex virus and vaccinia virus in the eyes of rabbits. Parameters for evaluation of efficacy were infectivity (corneal opacity, lesion size, and type), Draize (erythema, conjunctival swelling, and discharge), and reductio...

To study the role of herpes simplex virus type 1 immediate-early proteins in the transcriptional activation of herpes simplex virus genes, we isolated stably transformed cells expressing herpes simplex virus type 1 ICP4, an immediate-early protein known from previous studies to be necessary for delayed-early and late transcription. These cells efficiently expressed six delayed-early herpes simp...

Herpes simplex virus (HSV) infection, though most commonly seen in the oral, perioral and genital areas, can occur anywhere on the body. After primary infection, HSV then establishes latency in sensory nerve ganglia and reactivates intermittently, precipitated by various factors. These reactivations may be recurrent and appear in a dermatomal distribution, mimicking herpes zoster, often leading...

Total hemolytic complement (CH50) levels were compared in sera from normal hamsters and hamsters bearing tumors derived from herpes simplex virus type 2-transformed cells CH50 in normal sera ranged from 160 to 212 while CH50 in tumor bearer sera ranged from 82 to 146. Preincubation of tumor bearer sera with cell surface proteins (CSP) from homologous herpes simplex virus type 2-derived tumor ce...

brown alga, turbinaria conoides was successively extracted with n-hexane, cyclohexane, methanol and ethanol:water (1:1). the extracts were evaluated for antibacterial and antifungal activities by disc diffusion method. minimal inhibitory concentration was determined for active extracts by broth dilution method. the antiviral activity and cytotoxicity of the extracts were tested in human embryon...

Unlike amantadine (1-adamantanamine), tromantadine (N-1-adamantyl-N-[2-(dimethyl amino)ethoxy]acetamide hydrochloride) inhibits herpes simplex virus type 1 (KOS strain)-induced cytopathic effect and virus replication with limited toxicity to the cells. Vero and HEp-2 cells tolerated up to 2 mg of tromantadine per 2 X 10(6) cells for 24-, 48-, or 96-h incubation periods with little change in cel...