B cells in early and chronic HIV infection: evidence for preservation of immune function associated with early initiation of antiretroviral therapy.

Abstract:

:Characterization of lymphocytes including B cells during early versus chronic HIV infection is important for understanding the impact of chronic viremia on immune cell function. In this setting, we investigated B cells before and after reduction of HIV plasma viremia by antiretroviral therapy (ART). At baseline, peripheral blood B-cell counts were significantly lower in both early and chronic HIV-infected individuals compared with uninfected controls. Similar to CD4(+) but not CD8(+) T cells, B-cell numbers in both groups increased significantly after ART. At baseline, B cells of early HIV-infected individuals were composed of a higher percentage of plasmablasts and resting memory B cells compared with chronic HIV-infected individuals whose B cells were composed of a higher percentage of immature/transitional and exhausted B cells compared with their early infection counterparts. At 1 year after ART, the percentage of resting memory B cells remained higher in early compared with chronic HIV-infected individuals. This difference translated into a better functional profile in that memory B-cell responses to HIV and non-HIV antigens were superior in early- compared with chronic-treated HIV infected individuals. These findings provide new insights on B cells in HIV infection and how early initiation of ART may prevent irreversible immune system damage.

journal_name

Blood

journal_title

Blood

authors

Moir S,Buckner CM,Ho J,Wang W,Chen J,Waldner AJ,Posada JG,Kardava L,O'Shea MA,Kottilil S,Chun TW,Proschan MA,Fauci AS

doi

10.1182/blood-2010-05-285528

subject

Has Abstract

pub_date

2010-12-16 00:00:00

pages

5571-9

issue

25

eissn

0006-4971

issn

1528-0020

pii

blood-2010-05-285528

journal_volume

116

pub_type

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