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Neuropathies in HIV infection
1National Institute of Neurological Disorders and Stroke, National Institute of Health, Bethesda, MD 20892, USA.
Bailliere'S Clinical Neurology
|March 1, 1996
Summary
Peripheral neuropathies are common in HIV infection, caused by viral, autoimmune, or toxic factors. Antiretroviral drugs can worsen these neurological conditions.
Area of Science:
- Neurology
- Infectious Diseases
- Immunology
Background:
- Peripheral neuropathies are the most frequent neurological complication in HIV infection.
- These neuropathies manifest in various forms, including demyelinating, autonomic, and painful sensory types.
- Etiology is multifactorial, influenced by HIV stage, viral activity, autoimmune responses, and neurotoxic antiretroviral drugs.
Purpose of the Study:
- To review the diverse clinical presentations and etiologies of peripheral neuropathies in HIV-infected individuals.
- To explore the proposed mechanisms, including viral, autoimmune, and drug-induced factors.
- To highlight the impact of antiretroviral therapy on neuropathy development.
Main Methods:
- Literature review of peripheral neuropathies in HIV infection.
- Analysis of etiological factors: viral, autoimmune, toxic (antiretroviral drugs), nutritional, and co-infections.
- Discussion of pathogenetic mechanisms involving HIV, cytokines, immune cells, and drug toxicity.
Main Results:
- HIV-associated neuropathies are common and present heterogeneously.
- Viral presence in endoneurial macrophages may trigger autoimmune responses.
- Neurotoxic antiretroviral nucleoside analogues (ddC, ddI, d4T, 3TC) can exacerbate or induce neuropathy.
Conclusions:
- Peripheral neuropathies in HIV are complex and multifactorial.
- Understanding the interplay of viral, immune, and iatrogenic factors is crucial for management.
- Further research is needed to elucidate specific pathogenic pathways and develop targeted therapies.