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Clinical and Diagnostic Laboratory Immunology, Mar 1997, 217-222, Vol 4, No. 2
HE Prince and M Lape-Nixon
Published studies suggest that mitogenic responses of lymphocytes can be
reliably assessed by monitoring the expression of lymphocyte surface CD69
after 24 h of culture with the stimulant. We tested this hypothesis by
determining the ability of lymphocyte CD69 expression to predict the
outcome (normal or abnormal) of lymphocyte proliferative responses to
anti-CD3 in a group of human immunodeficiency virus type 1 (HIV-1)-infected
patients (n = 47). Cutoff values for defining normal and abnormal CD69
expression and proliferative ([3H]thymidine incorporation) responses were
established with lymphocytes from healthy uninfected controls (n = 20).
Lymphocytes from 29 HIV-infected patients exhibited an abnormal
proliferative response, and those from 25 of the 29 also exhibited abnormal
CD69 expression (sensitivity, 86.2%). Similarly, lymphocytes from 18
HIV-infected patients exhibited a normal proliferative response, and those
from 16 of the 18 also exhibited normal CD69 expression (specificity,
88.9%). The predictive value of a normal CD69 result was 80%, and the
predictive value of an abnormal CD69 result was 92.6%. These findings
demonstrate that HIV-1-associated impairments in lymphocyte activation can
be reliably detected by the rapid and nonradioactive CD69 expression assay.
Copyright © 1997 by the American Society for Microbiology. All rights reserved.
CD69 expression reliably predicts the anti-CD3-induced proliferative response of lymphocytes from human immunodeficiency virus type 1- infected patients
MRL Reference Laboratory, Cypress, California 90630, USA.
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