Cognitive impairment in asymptomatic stages of HIV infection. A longitudinal study.

Abstract:

:Seventy-eight asymptomatic HIV-seropositive (aHIV) subjects were examined by means of an extensive neuropsychological test battery in comparison with 32 HIV-seronegative controls. They were also tested with regard to CD4+ and serum p24 antigen. Fifty-six of them completed a clinical follow-up of 12 up to 36 months and 35 also underwent a second session of neuropsychological, CD4+ and p24 antigen assessments at a 12- to 18-month interval from the first session. Results obtained lead to the following conclusions: (a) even among aHIV subjects there is a significant prevalence (28.2%) of cognitive abnormalities for which no cause other than HIV can be found, and therefore this suggests the possible development of HIV-related brain damage since the earliest stages of infection; (b) most sensitive to early HIV-related cognitive impairment are timed psychomotor tasks and memory tasks which require attention, learning and 'active' monitoring or retrieval of information; (c) during the early asymptomatic stages of HIV infection, there is no clear-cut evidence of a cross-sectional relationship between cognition and immunological/ virological markers (at least in the high ranges of CD4+ cell counts considered here); only in relatively more advanced stages does this relationship become evident in the subgroup of aHIV subjects with cognitive abnormalities; (d) the presence of cognitive abnormalities in early HIV infection is predictive of a further decrease in cognitive functioning and faster progression to AIDS-this latter reflected by a faster rate of decline in the number of CD4+ cells and by an increase in positivity of serum p24 antigen.

journal_name

Eur Neurol

journal_title

European neurology

authors

Villa G,Solida A,Moro E,Tavolozza M,Antinori A,De Luca A,Murri R,Tamburrini E

doi

10.1159/000117228

subject

Has Abstract

pub_date

1996-01-01 00:00:00

pages

125-33

issue

3

eissn

0014-3022

issn

1421-9913

journal_volume

36

pub_type

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