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Interleukin-2 Increases CD4+ lymphocyte numbers but does not enhance responses to immunization: results of A5046s
Hernan Valdez1, Ronald Mitsuyasu, Alan Landay
1Case Western Reserve University and University Hospitals of Cleveland, Ohio 44106, USA. valdez.hernan@clevelandactu.org
Abstract:
To ascertain whether CD4(+) lymphocyte increases induced by interleukin (IL)-2 enhanced in vivo immune responses, 38 human immunodeficiency virus (HIV)-infected patients who had received highly active antiretroviral therapy (HAART) or HAART and IL-2 for at least 60 weeks were immunized with tetanus toxoid, inactivated glycoprotein 120-depleted HIV-1, and hepatitis A and B vaccines. Despite dramatic increases in CD4(+) lymphocyte counts, IL-2 did not enhance immunization responses.
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