Publications by authors named "Anna J Dreyer"

Article Synopsis
  • - The study aimed to determine how psychosocial factors contribute to differences in cognitive performance between individuals with and without HIV, involving 273 participants from Cape Town, South Africa.
  • - Researchers conducted cognitive tests across seven areas and evaluated 12 psychosocial measures, discovering that individuals with HIV scored lower in nearly all psychosocial variables and experienced a significant reduction in cognitive performance compared to those without HIV.
  • - Findings revealed that while some of the cognitive impairment linked to HIV could be explained by demographic and psychosocial factors, there remained a significant association indicating that these adjustments alone do not fully account for cognitive deficits.
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Background: Both efavirenz and dolutegravir have been associated with neuropsychiatric side-effects and cognitive impairment. Furthermore, cerebrospinal fluid (CSF) HIV RNA escape has not been comprehensively studied in African populations. We aimed to examine changes in cognition, neuropsychiatric symptoms, and CSF viral control associated with the widespread switch from efavirenz-based to dolutegravir-based antiretroviral therapy (ART).

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Two of every three persons living with dementia reside in low- and middle-income countries (LMICs). The projected increase in global dementia rates is expected to affect LMICs disproportionately. However, the majority of global dementia care costs occur in high-income countries (HICs), with dementia research predominantly focusing on HICs.

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Women with HIV (WWH) may be more vulnerable to cognitive impairment than men with HIV (MWH), which may be explained by the direct effects of HIV or by sociodemographic and psychiatric characteristics. We recruited 105 people with HIV (PWH; 76 women) with incomplete antiretroviral therapy adherence, comorbid major depressive disorder, and socioeconomically disadvantaged backgrounds. Participants completed neuropsychological testing and measures gathering sociodemographic, medical, and psychiatric information.

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Article Synopsis
  • - Current methods for classifying cognitive impairment in HIV patients can overstate the severity of the condition, affecting the understanding of underlying disease mechanisms.
  • - The existing criteria used since 2007 can mislabel over 20% of cognitively healthy individuals as impaired, leading to inappropriate assessments across different educational and socioeconomic groups.
  • - The International HIV-Cognition Working Group has developed six recommendations for a new diagnostic approach that separates HIV-related brain injury from other causes and emphasizes clinical context to improve understanding and management of cognitive impairment in diverse populations.
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Depression and cognitive impairment, which commonly coexist in people with HIV (PWH), have been identified as potential barriers to optimal antiretroviral therapy (ART) adherence. We investigated associations between cognitive performance, depression (as well as other sociodemographic, psychosocial and psychiatric variables) and ART adherence in a South African cohort of PWH with comorbid major depressive disorder (MDD). Cognitive performance and ART adherence were assessed at two time points 8 months apart (N = 105, N = 81).

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Background: Cognitive impairment is reported as a common complication in adult tuberculous meningitis (TBM), yet few studies have systematically assessed the frequency and nature of impairment. Moreover, the impact of impairment on functioning and medication adherence has not been described.

Methods: A cognitive test battery (10 measures assessing 7 cognitive domains) was administered to 34 participants with human immunodeficiency virus (HIV)-associated TBM 6 months after diagnosis.

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Cognitive performance in people with HIV (PWH) may be affected by brain injury attributable to the infection itself, by other medical and psychiatric comorbidities (including major depressive disorder; MDD), and by psychosocial factors (e.g., education, food insecurity).

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Mental health and neurocognitive functioning remain a concern among people living with HIV. Symptomatic neurocognitive impairment (NCI) and mental illness can cause difficulties in daily functioning, including problems adhering to treatment. However, many healthcare workers in resource-limited settings have limited knowledge about the relationship between HIV and NCI.

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Men often make riskier decisions than women across a wide range of real-life behaviors. Whether this sex difference is accentuated, diminished, or stable under stressful conditions is, however, contested in the scientific literature. A critical blind spot lies amid this contestation: Most studies use standardized, laboratory-based, cognitive measures of decision making rather than complex real-life social simulation tasks to assess risk-related behavior.

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Objective: Although many studies report that women with HIV (WWH) are more vulnerable to cognitive impairment than men with HIV (MWH), this trend is not described consistently in the literature. In this systematic review and meta-analysis, we investigated whether the weight of evidence supports the existence of a significant sex difference in cognitive functioning among people with HIV and, if so, whether specific domains are affected.

Method: A systematic literature search retrieved 4,062 unique articles published between January 2000 and June 2019.

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There is wide variation in the reported prevalence of cognitive impairment in people with HIV (PWH). Part of this variation may be attributable to different studies using different methods of combining neuropsychological test scores to classify participants as either cognitively impaired or unimpaired. Our aim was to determine, in a South African cohort of PWH (N = 148), (a) how much variation in reported rates was due to method used to define cognitive impairment and (b) which method correlated best with MRI biomarkers of HIV-related brain pathology.

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Human immunodeficiency virus (HIV)-associated neurocognitive disorders (HAND) criteria are frequently used to describe cognitive impairment in persons living with HIV (PLWH) across diverse populations globally. These criteria typically find 20-60% of PLWH meet criteria for HAND, which does not tally with clinical observations in the modern era that cognitive disorders present relatively infrequently. Most with HAND have asymptomatic neurocognitive impairment; however, the significance of low cognitive test performance without symptoms is uncertain.

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Objective: We explored the prevalence of HIV infection in older rural South Africans and its associations, as well as the point prevalence of dementia and its associations with HIV and aging.

Design: We utilized a cross-sectional analytic design.

Methods: Using the brief Community Screening Instrument for Dementia together with a rapid HIV test, we conducted a home-based screening survey among 1150 older South Africans.

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