Insulin resistance is associated with cognition among HIV-1-infected patients: The Hawaii aging with HIV cohort

Victor G. Valcour, Ned C. Sacktor, Robert H. Paul, Michael R. Watters, Ola A. Selnes, Bruce T. Shiramizu, Andrew E. Williams, Cecilia M. Shikuma

Research output: Contribution to journalArticle

Abstract

OBJECTIVE: To determine if insulin resistance (IR) is associated with lower cognitive performance among HIV-1-infected adults and to determine if advanced age magnifies risk. DESIGN: Cross-sectional analysis within the Hawaii Aging With HIV Cohort. METHODS: We calculated the homeostasis model assessment of insulin resistance (HOMA-IR) among 145 cohort participants. Values were compared to concurrent neuropsychological test performance and cognitive diagnoses. RESULTS: Hypertension, body mass index (BMI), and non-Caucasian self-identity were directly related to insulin resistance (IR); however, age, CD4 lymphocyte count, and rates of treatment with HAART were not. In logistic regression analyses and stratifying cognition status on a 3-tiered scale (normal, minor cognitive motor disorder (MCMD), and HIV-associated dementia (HAD)), we identified an increased risk of meeting a higher diagnostic category as HOMA-IR increased (OR, 1.12; 95% CI: 1.003 to 1.242 per unit of HOMA-IR, P = 0.044). In linear regression models and among nondiabetic participants, an increasing degree of IR was associated with lower performance on neuropsychological summary scores. CONCLUSIONS: IR is associated with cognitive dysfunction in this contemporary HIV-1 cohort enriched with older individuals. Metabolic dysfunction may contribute to the multifactorial pathogenesis of cognitive impairment in the era of HAART.

Original languageEnglish (US)
Pages (from-to)405-410
Number of pages6
JournalJournal of Acquired Immune Deficiency Syndromes
Volume43
Issue number4
DOIs
StatePublished - Dec 1 2006

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Keywords

  • AIDS dementia complex
  • Acquired immunodeficiency syndrome
  • Aging
  • HIV
  • Insulin resistance

ASJC Scopus subject areas

  • Infectious Diseases
  • Pharmacology (medical)

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