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Cerebral Single-Photon Emission Computed Tomography Abnormalities in Human Immunodeficiency Virus Type 1-Infected Gay Men without Cognitive Impairment

Sacktor, Ned; Prohovnik, Isak; Van Heertum, Ronald L.; Dooneief, George; Gorman, Jack M.; Marder, Karen; Todak, George; Stern, Yaakov; Mayeux, Richard Paul

Objective: To determine whether technetium Tc 99m exametazime single-photon computed emission tomography (SPECT) can distinguish gay human immunodeficiency virus (HIV)—positive subjects, both with and without mild cognitive impairment, from gay HIV-negative control subjects. Design: Twenty HIV-positive subjects (12 without cognitive impairment and eight with mild cognitive impairment) and 10 HIV-negative subjects underwent neurological, neuropsychological, magnetic resonance imaging, and technetium Tc 99m exametazime SPECT examinations. Setting: Subjects were recruited from a natural history study of gay men with HIV infection. Patients: Subjects from the cohort who had previously participated in a magnetic resonance imaging study were selected for the SPECT study. Main Outcome Measures: The SPECT scans were rated as abnormal if focal defects, confirmed by a horizontal profile analysis, were seen. Results: Sixty-seven percent of HIV-positive subjects without cognitive impairment, 88% of HIV-positive subjects with mild cognitive impairment, and 20% of HIV-negative subjects had abnormal SPECT scans (P<.05 for both HIV-positive groups when each group was compared with HIV-negative subjects). Conclusion: Compared with gay HIV-negative control subjects, focal SPECT defects are seen with an increased frequency in HIV-positive gay men without cognitive impairment and in HIV-positive gay men with mild cognitive impairment.

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Neurology
Published Here
February 22, 2018
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