HIV protease inhibitor exposure predicts cerebral small vessel disease.

TitleHIV protease inhibitor exposure predicts cerebral small vessel disease.
Publication TypeJournal Article
Year of Publication2014
AuthorsSoontornniyomkij, V, Umlauf, A, Chung, SA, Cochran, ML, Soontornniyomkij, B, Gouaux, B, Toperoff, W, Moore, DJ, Masliah, E, Ellis, RJ, Grant, I, Achim, CL
Date Published2014 Jun 01
KeywordsAdult, Aged, Anti-HIV Agents, California, Cerebral Small Vessel Diseases, Cohort Studies, Female, HIV Infections, HIV Protease Inhibitors, Humans, Internal, Male, Middle Aged

OBJECTIVE: HIV-associated neurocognitive disorders (HANDs) remain prevalent in patients who receive HAART and may be associated with cumulative exposure to antiretroviral medications and other factors. We proposed that chronic toxic effects of antiretroviral drugs could contribute to cerebral small vessel disease (CSVD), which might be one of the key underpinnings of HAND.DESIGN: Clinicopathological cross-sectional study of HIV-infected adults in the California NeuroAIDS Tissue Network.METHODS: We employed multivariable logistic regression methods to determine associations between HAART exposure (protease inhibitor-based, nonprotease inhibitor-based, or no HAART) and CSVD occurrence (standard histopathology: moderate/severe, mild, or absent). We also associated HAND (relative to normal cognition) with CSVD, HIV-related neuropathologic changes, older age at death (≥50 years), sex, or hepatitis C virus infection.RESULTS: We found that both mild and moderate/severe CSVD were associated with protease inhibitor-based HAART exposure after adjusting for diabetes mellitus [odds ratio (OR) 2.8 (95% confidence interval, CI 1.03-7.9) and 2.6 (95% CI 1.03-6.7), respectively, n = 134]. Moderate/severe CSVD was associated with diabetes after adjusting for HAART exposure [OR 7.4 (95% CI 1.6-70.7), n = 134]. Notably, HAND was associated with mild CSVD [OR 4.8 (95% CI 1.1-21.2), n = 63], which remained statistically significant after adjusting for vessel mineralization, HIV encephalitis, microglial nodular lesions, white matter lesions, or older age.CONCLUSION: Protease inhibitor-based HAART exposure may increase the risk of CSVD and thereby neurocognitive impairment in HIV-infected adults. Apart from the possible direct toxicity to cerebral small vessels, protease inhibitor-based HAART may contribute indirectly to CSVD by inducing metabolic abnormalities.

Alternate JournalAIDS
PubMed ID24637542
PubMed Central IDPMC4071161
Grant ListP50 DA026306 / DA / NIDA NIH HHS / United States
R01 MH094159 / MH / NIMH NIH HHS / United States
R01 AG043384 / AG / NIA NIH HHS / United States
U24 MH100928 / MH / NIMH NIH HHS / United States
R25 MH081482 / MH / NIMH NIH HHS / United States
P30 NS076411 / NS / NINDS NIH HHS / United States
R01 MH062962 / MH / NIMH NIH HHS / United States
R01 MH096648 / MH / NIMH NIH HHS / United States
P30 MH062512 / MH / NIMH NIH HHS / United States