Related Experiment Videos
B lymphocyte dysfunctions in HIV infection.
1Microbiology and Tumor Biology Center, Karolinska Institutet, S 17177 Stockholm, Sweden. Angelo.De.Milito@mtc.ki.se
Current HIV Research
|April 1, 2004
Summary
Human immunodeficiency virus (HIV) infection severely damages B lymphocytes, impairing immune responses. This review explores how T and B cell activation contributes to B cell dysfunction and memory loss in HIV.
Area of Science:
- Immunology
- Virology
- Cell Biology
Background:
- HIV establishes chronic, latent infections, overwhelming host defenses.
- The virus causes significant immune system damage via direct and indirect mechanisms.
- Both cellular and humoral immunity fail to control HIV, leading to lymphocyte exhaustion.
Purpose of the Study:
- To review mechanisms causing B cell functional loss during HIV infection.
- To examine the role of T and B cell activation in B cell polyclonal activation.
- To discuss the impact on memory B lymphocytes and B cell apoptosis.
Main Methods:
- Review of existing literature on HIV pathogenesis and B cell immunology.
- Analysis of B cell phenotypic and functional alterations in HIV patients.
- Discussion of immune activation pathways affecting B cells.
Main Results:
- HIV infection leads to aberrant immune cell activation, particularly B lymphocytes.
- B cells exhibit altered phenotypes, impaired reactivity, and increased apoptosis.
- Polyclonal B cell activation and hypergammaglobulinemia are observed alongside functional deficits.
Conclusions:
- HIV profoundly damages B cells, contributing to immune deficiency.
- Understanding B cell dysfunction is crucial for managing HIV infection.
- Therapeutic strategies may need to address B cell damage in HIV treatment.