Working memory performance predicts subjective cognitive complaints in HIV infection.

The authors examined the contribution of working memory performance to subjective cognitive complaints in HIV infection beyond the influence of depressive symptoms. Thirty-six adults with HIV infection were administered neuropsychological (NP) tests of working memory, complex psychomotor efficiency, verbal learning, delayed recall, and questionnaires measuring depressive symptoms and cognitive complaints. Working memory performance, depression scores, and complex psychomotor efficiency were most strongly associated with self-reported cognitive complaints, whereas verbal learning scores and simple psychomotor efficiency showed more modest associations. Regression analyses revealed working memory performance to be the strongest NP predictor of self-reported cognitive complaints, comparable with depression scores in the amount of variance explained. These results suggest that working memory performance may be well suited to reflect how patients function in their everyday environment.

The effect of divalproex sodium on HIV replication in vivo.

In vitro data suggest valproate activates HIV replication. This study prospectively assesses whether divalproex sodium causes an increase in HIV replication in patients. Eight participants had their HIV viral load measured over approximately 1 month. The largest increases in viral load occurred in patients without antiretroviral medication. No patients had an increase in Log10 HIV viral load > or = 0.5. Further study is needed to understand implications.

Lipodystrophy severity does not contribute to HAART nonadherence.

Lipodystrophy severity among 77 people living with HIV/AIDS (PHA) with body fat redistribution was not related to antiretroviral adherence including doses missed during the previous month, categorical rating of maximal adherence, and the PMAQ7 adherence behavior scale. Two thirds of the sample reported submaximal adherence, 19% missing more than two doses, but adherence behavior ratings reflected good overall adherence. Overall symptom burden, convenience of regimen schedule and remembering to organize and take antiretroviral doses, but not regimen adaptation or treatment support, were associated with adherence. Remembering was most strongly related to adherence indicators, retaining statistical significance in adjusted multivariate regression analyses.

The impact of neuropsychological impairment and depression on health-related quality of life in HIV-infection.

Neuropsychological impairment and depression are common among individual with HIV-infection, resulting in significantly altered everyday functioning. The objective of this study was to examine the impact of these two important neurobehavioural complications on health-related quality of life in adults with HIV-infection. Participants (n = 155) received a 3-hours comprehensive neuropsychological examination, the Beck Depression Inventory, and the Medical Outcomes Study HIV Quality of Life instrument. Four groups were formed based on the presence or absence of depression and neuropsychological impairment. Results suggest that neuropsychological impairment and depression can differentially affect dimensions of health-related quality of Life. Specifically, depression has a significant impact on mental health dimensions of health-related quality of life. Some evidence exists for an impact of neuropsychological impairment, or a combined impact of depression and neuropsychological impairment, on the Physical Health dimensions of health-related quality of life. These results confirm the importance of depression as a determinant of health-related quality of life in HIV/AIDS and provide a potential avenue for improving health-related quality of life in adults with HIV-infection.

Fatigue in HIV/AIDS is associated with depression and subjective neurocognitive complaints but not neuropsychological functioning.

Fatigue and depressive symptoms are common in HIV-infection. The relationship between these symptoms and neuropsychological functioning is poorly understood, particularly in symptomatic infection/AIDS. This study examined the associations among fatigue, depressive symptoms, subjective neurocognitive complaints, and objective neuropsychological performance in HIV/AIDS. Sixty-eight men with HIV-infection (27 adults with HIV-infection but not AIDS and 41 with AIDS diagnosis) completed a neuropsychological test battery and self-report measures of fatigue (Fatigue Severity Scale), depressive symptoms (Beck Depression Inventory), and subjective neurocognitive complaints (Patient's Assessment of Own Functioning). High levels of fatigue were endorsed by participants. Fatigue severity was related to depressive symptoms but not to AIDS diagnosis or medication status. Verbal learning and motor function was worse in participants with AIDS, but neuropsychological functioning was not significantly correlated with fatigue or depressive symptoms. Subjective neurocognitive complaints were predicted by both depressive symptoms and fatigue. Our results suggest that adults with fatigue and HIV-infection (with or without AIDS) should be screened for depression. Neither fatigue nor depressive symptoms appear to affect neuropsychological functioning in HIV/AIDS. Future research is needed to develop and evaluate instruments and methods to differentiate depression-related fatigue from fatigue that may reflect underlying medical disease. Such research will further the development of effective treatments for fatigue associated with HIV-infection.