Active T cell suicide (apoptosis) is supposed to be involved in the CD4 Β§ T cell depletion in the course of HIV infection. We investigated the expression of the apoptosis-related antigen Fas on CD4 + T cells from 25 HIVpositive individuals (CDC I-III) and 8 HIV-negative controis by two-colour flowcy
CD38 expression on cryopreserved CD8+ T cells predicts HIV disease progression
β Scribed by Stephen P. Perfetto; John D. Malone; Clifton Hawkes; Gilbert McCrary; Bob August; Susan Zhou; Robin Garner; Matthew J. Dolan; Arthur E. Brown
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 140 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0196-4763
No coin nor oath required. For personal study only.
β¦ Synopsis
Previous studies have revealed that the expression of CD38 on CD8 Ο© T cells is a strong predictor of disease progression in human immunodeficiency virus (HIV)-infected individuals. Those studies were performed using fresh patient samples over an extended trial period. After demonstrating the validity of assay results on cryopreserved cells, we performed a retrospective study using frozen cell samples to determine the predictive value of CD38 expression in patients with CD4 counts above 400 cells/Β΅l. The CD38 expression as measured by antibody binding capacity and the CD38 median channel were shown to be associated with time to new opportunistic infection or death (both P F 0.001). These results suggest that CD38 expression on CD8 Ο© T cells, whether fresh or frozen, provides a useful predictor of HIV disease progression.
π SIMILAR VOLUMES
For some membrane-associated antigens, the number of molecules expressed per cell carries information about the cell's differentiation and activation state. Quantitating antigen expression by flow cytometry has immediate application in monitoring CD38 expression on CD8 Ψ T cells in human immunodefic
## Abstract The role of T regulatory cells (Tregs) in human immunodeficiency virus (HIV)β1 infection, although not entirely clear, has recently been highlighted. Despite their lack of specificity, fluorochromeβlabeled CD4 and CD25 antibodies are common flow cytometric reagents used to identify thes
## Abstract Excessive immune activation is a hallmark of chronic uncontrolled HIV infection. During the past years, growing evidence suggests that immune inhibitory signals also play an important role in progressive disease. However, the relationship between positive and negative immune signals on