Related Experiment Videos
Cognitive performance after progression to AIDS: a longitudinal study from the Multicenter AIDS Cohort Study
O A Selnes1, N Galai, H Bacellar
1Johns Hopkins University, Baltimore, MD.
Neurology
|February 1, 1995
Summary
Cognitive functioning generally remains stable before acquired immune deficiency syndrome (AIDS) diagnosis. After developing AIDS, individuals may experience mild declines in fine motor skills, but other cognitive domains are typically unaffected.
Area of Science:
- Neuroscience
- Immunology
- Public Health
Background:
- Acquired immune deficiency syndrome (AIDS) can impact various bodily systems, including the brain.
- Understanding cognitive changes associated with HIV/AIDS progression is crucial for patient care and management.
Purpose of the Study:
- To investigate cognitive functioning changes in individuals before and after developing an AIDS-defining illness or a CD4+ lymphocyte count below 200/mm3.
- To compare cognitive trajectories in different participant groups within the Multicenter AIDS Cohort Study.
Main Methods:
- Longitudinal analysis of neuropsychological (NP) evaluations from participants in the Multicenter AIDS Cohort Study.
- Inclusion of participants with AIDS-defining illnesses, low CD4+ counts, and a dementia comparison group.
- Assessment of attention, memory, constructional abilities, and psychomotor speed using generalized estimating equations.
Main Results:
- No significant cognitive decline was observed before AIDS diagnosis, except in the dementia group which showed psychomotor speed decline.
- Following AIDS diagnosis, individuals with clinical AIDS exhibited a decline in psychomotor speed, but not other cognitive areas.
- Participants with CD4+ counts < 200/mm3 but no AIDS-defining illness showed no significant cognitive decline post-diagnosis.
Conclusions:
- Cognitive functions remain largely stable before AIDS onset, barring pre-existing dementia.
- Individuals with clinical AIDS may experience mild declines in fine motor skills.
- Immunosuppressed individuals without an AIDS-defining illness do not show significant cognitive decline.