Thinking about HIV: the intersection of virus, neuroinflammation and cognitive dysfunction

Area of Science:

• Neuroscience
• Immunology
• Infectious Diseases

Background:

• Neurologic disorders affect up to 50% of adults and children with human immunodeficiency virus (HIV).
• HIV neuropathogenesis results from direct viral replication and subsequent neuroinflammatory responses within the central nervous system (CNS).
• HIV establishes early CNS presence, primarily within perivascular macrophages and microglia, impacting brain homeostasis.

Purpose of the Study:

• To elucidate the mechanisms underlying HIV-associated neurologic disorders.
• To highlight the role of CNS immunosurveillance and immune cell function in HIV infection.
• To emphasize the need for integrated therapeutic strategies.

Main Methods:

• Review of existing literature on HIV neuropathogenesis.
• Analysis of the interplay between viral factors, neuroinflammation, and immune cells in the CNS.
• Discussion of therapeutic targets for managing HIV-related neurological complications.

Main Results:

• HIV infection directly impacts the CNS, leading to significant neurologic sequelae.
• Dysregulation of the CNS immune environment, including microglia and lymphocytes, contributes to neural impairment.
• Early CNS viral load and neuroinflammation are critical factors in disease progression.

Conclusions:

• Effective management of HIV-associated neurologic disorders requires addressing both viral replication and neuroinflammation.
• Therapeutic strategies must focus on lowering CNS viral load and restoring immune homeostasis.
• Combination therapies are essential for neuroprotection and mitigating neuropathogenesis in HIV-infected individuals.