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SCID mice with HIV encephalitis develop behavioral abnormalities

N Avgeropoulos1, B Kelley, L Middaugh

  • 1Department of Neurology, Medical University of South Carolina, Charleston 29425, USA.

Journal of Acquired Immune Deficiency Syndromes and Human Retrovirology : Official Publication of the International Retrovirology Association
|May 21, 1998
PubMed
Summary

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Severe combined immunodeficient (SCID) mice inoculated with HIV develop brain pathology and behavioral changes similar to human HIV encephalitis. This SCID mouse model shows promise for studying HIV brain disease and testing new treatments.

Area of Science:

  • Neuroscience
  • Immunology
  • Virology

Background:

  • HIV infection can lead to neurological complications, known as HIV encephalitis.
  • Developing animal models is crucial for understanding HIV's impact on the brain and for therapeutic development.

Purpose of the Study:

  • To establish and characterize a chronic HIV encephalitis model in SCID mice.
  • To assess behavioral abnormalities and neuropathology in this model.

Main Methods:

  • SCID mice were intracerebrally inoculated with HIV-infected human monocytes every 4 weeks for 3 months.
  • Cognitive function was evaluated using the Morris water maze.
  • Brain tissue was analyzed for neuropathological markers.

Main Results:

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  • HIV-infected mice exhibited impaired cognitive function and reduced motor activity compared to controls.
  • Histopathological analysis revealed significant astrogliosis and increased MHC class II-positive macrophages in HIV-infected brains.
  • The model showed brain pathology consistent with human HIV encephalitis.

Conclusions:

  • SCID mice inoculated with HIV develop behavioral deficits and neuropathology mirroring human HIV encephalitis.
  • This model is suitable for investigating HIV encephalitis pathogenesis and evaluating potential drug interventions.