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HIV-2 and its neurological manifestations
1Royal Victoria Hospital, Banjul, The Gambia, West Africa.
Summary
Human immunodeficiency virus type 2 (HIV-2) causes AIDS and neurological disease similar to HIV-1, but is less pathogenic. HIV-2 is endemic in West Africa, spreading globally through travel and migration.
Area of Science:
- Virology
- Neurology
- Infectious Diseases
Background:
- Human immunodeficiency virus type 2 (HIV-2) causes a spectrum of illness, including AIDS, clinically indistinguishable from HIV-1.
- HIV-2 is endemic in West Africa and has spread globally due to trade, migration, war, and tourism.
- Limited diagnostic facilities and autopsy data in Africa restrict understanding of HIV-2 neuropathology.
Purpose of the Study:
- To review the current understanding of neuropathology induced by HIV-2.
- To highlight the neurotropic properties and disease mechanisms of HIV-2.
Main Methods:
- Literature review of available studies on HIV-2 neuropathology.
- Analysis of clinical and pathological data, where available.
Main Results:
- HIV-2 infection presents clinically similarly to HIV-1, including AIDS.
- Evidence suggests HIV-2 is less pathogenic with a longer natural history.
- HIV-2 has neurotropic properties, causing disease through direct viral action and immunosuppression, leading to opportunistic infections and tumors.
Conclusions:
- HIV-2 causes significant neurological disease, similar to HIV-1.
- Despite diagnostic challenges, HIV-2's neurotropic nature and disease-causing mechanisms are increasingly understood.
- Further research is needed to fully elucidate HIV-2 neuropathology, especially in resource-limited settings.