Microglia-passaged simian immunodeficiency virus induces neurophysiological abnormalities in monkeys

Antiviral treatment normalizes neurophysiological but not movement abnormalities in simian immunodeficiency virus-infected monkeys.

Simian immunodeficiency virus (SIV) infection of rhesus monkeys provides an excellent model of the central nervous system (CNS) consequences of HIV infection. To discern the relationship between viral load and abnormalities induced in the CNS by the virus, we infected animals with SIV and later instituted antiviral treatment to lower peripheral viral load. Measurement of sensory-evoked potentia...

Vaccine protection against functional CTL abnormalities in simian human immunodeficiency virus-infected rhesus monkeys.

Accumulating evidence suggests that HIV-specific CD8(+) CTL are dysfunctional in HIV-infected individuals with progressive clinical disease. In the present studies, cytokine production by virus-specific CTL was assessed in the rhesus monkey model for AIDS to determine its contribution to the functional impairment of CTL. CTL from monkeys infected with nonpathogenic isolates of simian and simian...

vpr deletion mutant of simian immunodeficiency virus induces AIDS in rhesus monkeys.

In previous experiments, animals infected with SIVmac239 containing a point mutation in the vpr and nef genes developed AIDS-like symptoms after early reversion of the vpr and nef genes. Here we show that two animals in which the nef gene but not the vpr gene had reverted in the first few months did not develop disease during a 3-year observation period even after reversion to a functional vpr ...

Neuropathogenesis of simian immunodeficiency virus infection in macaque monkeys.

Patients infected with human immunodeficiency virus (HIV) develop immunologic dysfunction and multiorgan inflammatory diseases directly associated with HIV-1 infection. Of these inflammatory diseases, the most devastating to the HIV-infected patient is involvement of the central nervous system (CNS). The pathogenesis of the clinical syndrome observed in these patients, termed HIV-associated dem...

Virus-Infected, Lactating Rhesus Monkeys the Breast Milk of Simian Immunodeficiency Virus-Specific Cellular Immune Responses in Potent Simian Immunodeficiency