HIV and Aging: Effects on the Central Nervous System

Silvia Cañizares; Mariana Cherner; Ronald J. Ellis

doi:10.1055/s-0034-1372340

Seminars in Neurology, Table of Contents

Semin Neurol 2014; 34(01): 027-034
DOI: 10.1055/s-0034-1372340

Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

HIV and Aging: Effects on the Central Nervous System

Silvia Cañizares

¹Clinical Institute of Neurosciences, Hospital Clinic of Barcelona, Barcelona, Spain

,

Mariana Cherner

²Department of Psychiatry, University of California, San Diego, California

,

Ronald J. Ellis

³Department of Neurosciences, HIV Neurobehavioral Research Center, University of California, San Diego, California

› Author Affiliations

Abstract

With the introduction of combination antiretroviral therapy, many human immunodeficiency virus-positive (HIV+) individuals are reaching advanced age. The proportion of people living with HIV older than 50 years already exceeds 50% in many communities, and is expected to reach this level nationally by 2015. HIV and aging are independently associated with neuropathological changes, but their concurrence may have a more deleterious effect on the central nervous system (CNS). Published data about neurocognitive and neuroimaging markers of HIV and aging are reviewed. Putative factors contributing to neurocognitive impairment and neuroimaging changes in the aging HIV+ brain, such as metabolic disturbances, cardiovascular risk factors, immune senescence, and neuroinflammation, are described. The possible relationship between HIV and some markers of Alzheimer's disease is presented. Current research findings emphasize multiple mechanisms related to HIV and combination antiretroviral therapy that compromise CNS structure and function with advancing age.

Keywords

human immunodeficiency virus - aging - neurocognitive - neuroimaging - metabolic syndrome

Full Text

References

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