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A Rat Model of EcoHIV Brain Infection
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Recent advances in HIV neuropathy.

David R Cornblath1, Ahmet Hoke

  • 1School of Medicine, Johns Hopkins University, Baltimore, Maryland, USA. dcornbl@jhmi.edu

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Recent advances show reduced HIV-associated distal sensory polyneuropathy with effective antiretroviral therapy. Pathogenic studies using animal models are improving understanding and treatment of HIV neuropathy.

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Area of Science:

  • Neurology
  • Infectious Diseases
  • Pathogenesis Research

Background:

  • HIV-associated distal sensory polyneuropathy (DSPN) incidence has decreased with highly active antiretroviral therapy (HAART).
  • DSPN remains linked to neurotoxic antiretroviral drugs.
  • Understanding the mechanisms of HIV neuropathy is crucial for improved patient outcomes.

Purpose of the Study:

  • To review recent advancements in understanding and managing HIV neuropathy.
  • To highlight progress in identifying pathogenic mechanisms of HIV-associated DSPN.
  • To discuss the role of animal models in HIV neuropathy research.

Main Methods:

  • Analysis of epidemiological studies on HIV-associated DSPN incidence and antiretroviral drug associations.
  • Review of in-vitro studies investigating the direct mitochondrial toxicity of antiretroviral drugs.
  • Examination of research on HIV envelope protein gp120's axonal toxicity.
  • Evaluation of feline immunodeficiency virus (FIV) models for studying peripheral neuropathy in HIV.

Main Results:

  • Epidemiological data indicate a reduction in DSPN incidence post-HAART introduction.
  • Skin punch biopsy is a valuable diagnostic and predictive tool for DSPN.
  • In-vitro models reveal direct mitochondrial toxicity of neuropathy-inducing dideoxynucleoside analogues.
  • HIV gp120 demonstrates direct or indirect axonal toxicity.
  • Feline models develop peripheral neuropathy with epidermal innervation loss.

Conclusions:

  • Epidemiological studies continue to inform HIV neuropathy trends.
  • Pathogenic research, particularly utilizing animal models, is advancing the understanding of HIV-associated neuropathies.
  • Further research is expected to lead to more effective treatments for HIV neuropathy.