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Updated: Aug 11, 2026

Ex Vivo Infection of Human Lymphoid Tissue and Female Genital Mucosa with Human Immunodeficiency Virus 1 and Histoculture
Published on: October 12, 2018
[The lymphocyte populations at different stages in the infection caused by the human immunodeficiency virus]
Insights
This study on HIV infection found increased rosette-forming cells (RFCs) in asymptomatic individuals. Later stages showed elevated T8 lymphocytes and a decreased T4/T8 ratio, with T4 cells dropping sharply in AIDS patients.
Area of Science:
- Immunology
- Virology
- Cell Biology
Background:
- Human Immunodeficiency Virus (HIV) infection significantly impacts the immune system.
- Understanding changes in immunocompetent cells is crucial for monitoring disease progression.
Purpose of the Study:
- To comparatively analyze immunocompetent cell content in HIV-infected individuals.
- To correlate cell changes with different stages of HIV infection.
Main Methods:
- Utilized rosette formation and immunofluorescence assays.
- Employed monoclonal antibodies for cell identification.
- Studied 58 individuals across various HIV infection stages.
Main Results:
- Asymptomatic HIV infection showed increased rosette-forming cells (RFCs), including active E-RFC, E-RFC, theophylline-resistant E-RFC, and M-FRC.
- Lymphadenopathy stage revealed elevated T8 lymphocytes, particularly with secondary infections, and the first decrease in the T4/T8 ratio.
- Advanced HIV/AIDS stages maintained high RFC levels but exhibited a sharp decline in T4 lymphocytes.
Conclusions:
- RFC levels may serve as an indicator in early HIV stages.
- T8 lymphocyte increase and T4/T8 ratio decrease are characteristic of later HIV progression.
- Significant T4 lymphocyte depletion marks the development of AIDS.
Abstract:
In 58 persons infected with HIV the comparative study of the content of immunocompetent cells was carried out by the methods of rosette formation and immunofluorescence with the use of monoclonal antibodies. An increase in the content of rosette-forming cells (RFC), such as active E-RFC, E-RFC, theophylline-resistant E-RFC and M-FRC, in asymptomatic seropositive persons was established. At this stage of the disease the amount of lymphocytes T4 and T8 and their ratio underwent no essential changes. At the stage of lymphoadenopathy an increase in the content of lymphocytes T8, more pronounced in patients with secondary infectious lesions, was noted. At this stage a decrease in T4/T8 ratio appeared for the first time. A high level of rosette-forming lymphocytes was still observed both at this period and at the period of clinically developed AIDS, while the level of lymphocytes T4 sharply dropped in such patients.
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