Cytomegalovirus (CMV) was demonstrated to induce intrinsic interference to Newcastle disease virus (NDV) in human fibroblast cells under noncytopathic conditions. This interference is unique in that (i) cytomegalovirus is the first DNA virus demonstrated to have this property and (ii) the state of interference was transient and progressively lost as the condition of the cells changed with the d...

Ruminant lentiviruses share genomic sequences and biologic properties with human immunodeficiency viruses. Four ovine lentivirus strains were assessed for cytopathic effects and virus replication. Lentivirus isolate H/24 produced high virus titers and lysis of synovial cells but replicated slowly and caused no fusion of alveolar macrophages. Lentivirus isolates 84/28 and 85/14 produced low viru...

The characteristic viral cytopathic effects of herpes simplex virus (HSV) in anorectal cytology specimens are rarely encountered. When present, if clinically asymptomatic, this could represent subclinical shedding of the HSV. Men who have sex with men (MSM) have especially higher rates of shedding HSV than the general population [1,2]. HSV-2-seropositive MSM has more frequent subclinical HSV-2 ...

Bovine bone marrow-derived macrophages infected with the cytopathic biotype of bovine viral diarrhea virus released an antiviral activity into the supernatant which was tentatively characterized as type I interferon because of its physicochemical properties. Such supernatants primed both infected and uninfected macrophages for decreased nitric oxide production and apoptosis in response to lipop...

Vesicular stomatitis virus (VSV) establishes a non-cytopathic persistent infection in Drosophila melanogaster cells. The synthesis of the viral glycoprotein G was specifically inhibited during a post-transcriptional step, whereas the synthesis and turnover of its mRNA were not modified compared with the other viral mRNAs. Another viral glycoprotein, migrating slightly faster than G protein on a...

The cytopathic changes produced by bluetongue virus were first observed by Haig, McKercher & Alexander (1956) in monolayer roller tube cultures of primary lamb kidney ce ll s. Subsequently, Fernandes (1959) described the growth and cytopathic effects of a virulent as well as a homologous egg-adapted strain at the thirtysixth passage level, in cultures of human amnion (Fernandes), Chang liver, c...

In November 1963 a cytopathic agent was isolated from a baby who died in the Royal Manchester Children's Hospital. This agent produced an unfamiliar effect in cell cultures, and further studies confirmed that this effect was unlike anything previously encountered by us. Since then five other agents, producing similar cytopathic effects in cell cultures, have been isolated in the Public Health L...

Four plants having known medicinal properties were screened for inhibition of goatpox virus (GTPV) replication in vitro. Of the 4 plants, extract of Acacia arabica (Babul) and Eugenia jambolana (Jamun) leaves had inhibition (%) 99.70 and 99.92 at their maximum non toxic concentrations, 99.93 +/- 0.38 and 1999.73 +/- 0.50 microg/ml, respectively in all cytopathic effect (CPE) inhibition assays. ...

Analysis of previously published target-cell limited viral dynamic models for pathogens such as HIV, hepatitis, and influenza generally rely on standard techniques from dynamical systems theory or numerical simulation. We use a quasi-steady-state approximation to derive an analytic solution for the model with a non-cytopathic effect, that is, when the death rates of uninfected and infected cell...