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Recent clinical history and cognitive dysfunction for attention and executive function among human immunodeficiency

David F Tate1, Allison Delong, Daniel E McCaffrey

  • 1Center for Neurological Imaging, Brigham and Women' s Hospital, Harvard Medical School, Boston, MA, USA.

Archives of Clinical Neuropsychology : the Official Journal of the National Academy of Neuropsychologists
|August 30, 2011
PubMed

Insights

Recent trends in CD4 counts and viral loads predict cognitive function in HIV patients. This history, alongside baseline CD4 counts, offers insights into cognitive performance across various domains.

Area of Science:

  • Neuroscience
  • Immunology
  • Virology

Background:

  • Human immunodeficiency virus (HIV) infection can impact cognitive function.
  • Understanding the relationship between disease markers and cognitive performance is crucial for managing HIV.
  • Recent clinical history may offer predictive value for cognitive outcomes.

Purpose of the Study:

  • To examine the association between recent trends in CD4 counts and viral loads and cognitive test performance in HIV-infected individuals.
  • To determine if recent immunologic and virologic history predicts cognitive function across multiple domains.
  • To compare the predictive power of recent clinical trends versus nadir CD4 cell count on cognitive performance.

Main Methods:

  • Linear regression models were used to analyze data from 83 HIV-infected patients.
  • Investigated relationships between nadir CD4 cell count, 1-year trends in CD4 counts, and plasma viral loads (PVLs).
  • Assessed cognitive performance across executive function, attention/working memory, and learning/memory domains.

Main Results:

  • Nadir CD4 cell count predicted current executive function (p = .004).
  • One-year clinical history (CD4 counts and/or PVLs) predicted executive function, attention/working memory, and learning/memory (p < .05).
  • Recent clinical trends were more predictive of cognitive performance than nadir CD4 count, except for executive function.

Conclusions:

  • Recent CD4 and viral load history are significant predictors of current cognitive function in HIV patients.
  • Cognitive dysfunction models incorporating recent clinical trends may enhance understanding of HIV's impact on the central nervous system (CNS).
  • Further validation is needed to refine models predicting cognitive decline in relation to HIV disease progression and CNS involvement.

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