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Here - American Geriatrics Society

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P OSTER<br />

A BSTRACTS<br />

contribution by heightened immune activation to age-associated accelerated<br />

HIV disease progression has not been delineated.<br />

Methods: Prospective, age-differentiated, multicenter cohort<br />

study of older (≥45 years) and younger (18-30 years) subjects who received<br />

192 weeks of a uniform ART regimen. Age-group differences<br />

in the time course of a diverse array of immunologic indices were assessed<br />

with adjustment for other correlates of T cell restoration in<br />

mixed-effects models.<br />

Results: 90 subjects enrolled in this cohort, including 45 younger<br />

(median age 26, range 18-30 yrs) and 45 older (median age 50, range<br />

45-79 yrs) subjects. The increases of naive, memory and total CD4<br />

cells, and naïve CD8 cells per week with ART did not differ significantly<br />

between the age-groups, but older subjects maintained significantly<br />

fewer circulating naive ( P

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