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- W2041317465 abstract "Neuronal pathology in acquired immunodeficiency syndrome (AIDS) is of interest in relation to cognitive impairment in AIDS patients and from the broader perspective of the pathogenesis of neurodegeneration. Cortical dendritic spine loss has been described in patients with AIDS and the aim of this study was to test the hypothesis that similar pathology is present in cynomolgus macaques infected with simian immunodeficiency virus (SIV). These animals develop an AIDS-like illness, but multinucleated giant cell encephalitis is not a feature and CNS virus load is found to be very low. Four animals infected for 2.5-3 months and four infected for 2-3 years were compared with four controls. The Golgi-Cox technique was employed to demonstrate dendritic morphology in the frontal cortex and the diameter of apical dendrites, dendritic spine density and dendritic spine lengths were measured in layer V pyramidal cells. Immunohistochemistry for microtubule-associated protein-2 (MAP-2), MHC class II and glial fibrillary acidic protein (GFAP) was also performed. In infected animals there was progressive spine loss and atrophy of remaining spines with loss of MAP-2 immunoreactivity at late time points. No parallel increase in GFAP immunostaining or MHC-class II expression in microglial cells was seen. We conclude that progressive neuronal dendritic pathology is a feature of SIVmac251 infection of cynomolgus macaques and is apparent relatively early in disease. Furthermore, dendritic abnormalities occur in the absence of either multinucleated giant cell pathology or substantial CNS virus load." @default.
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- W2041317465 date "1999-01-01" @default.
- W2041317465 modified "2023-09-24" @default.
- W2041317465 title "Progressive dendritic pathology in cynomolgus macaques infected with simian immunodeficiency virus" @default.
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- W2041317465 doi "https://doi.org/10.1046/j.1365-2990.1999.00163.x" @default.
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