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  • Title: Long-term persistent infection of macaque monkeys with the simian immunodeficiency virus.
    Author: Daniel MD, Letvin NL, Sehgal PK, Hunsmann G, Schmidt DK, King NW, Desrosiers RC.
    Journal: J Gen Virol; 1987 Dec; 68 ( Pt 12)():3183-9. PubMed ID: 2826656.
    Abstract:
    Juvenile rhesus macaques 6 to 18 months of age were experimentally infected by intravenous inoculation with the simian immunodeficiency virus (SIV), the T cell-tropic retrovirus of monkeys related to the human acquired immunodeficiency syndrome (AIDS) virus HIV. The SIV used for inoculation was grown either in normal human peripheral blood lymphocytes in the presence of interleukin 2 or in the human tumour cell line HUT-78. Eight of the macaques died 129 to 352 days post-inoculation with a variety of clinical and pathological findings paralleling those of AIDS in humans. However eight other animals became persistently infected for prolonged periods; these eight macaques remained alive at 537 and 820 days post-inoculation despite persistent lymphadenopathy and our continued ability to isolate SIV. The ability of these monkeys to survive infection correlated directly with the strength of their antibody response to SIV. Infection was also established in macaques using approximately 100 tissue culture infectious doses of HUT-78-grown SIV. There was no correlation between the dose of virus inoculum and either the strength of the antibody response or clinical outcome. These results demonstrate that SIV infection of macaques can be used not only to study acute AIDS but also to mimic the long-term persistent infection seen in carriers of HIV.
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