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Updated: Jun 16, 2026

Processing of Bronchoalveolar Lavage Fluid and Matched Blood for Alveolar Macrophage and CD4+ T-cell Immunophenotyping and HIV Reservoir Assessment
Published on: June 23, 2019
[Immune mechanisms of comorbidity of HIV infection and pulmonary tuberculosis]
Aim:
to study the immune system in patients with tuberculosis-associated HIV infection at different stages of disease and during antiretroviral therapy (ARVT).
Subjects And Methods:
The study included 90 patients with tuberculosis-associated HIV infection; a control group comprised 117 HIV-infected patients. The total number of T lymphocytes and their subpopulations (CD3+, CD4+, and CD8+) and the levels of the cytokines TNF-alpha, IL-6, and their soluble receptors SRp55 of TNF-alpha (type I), SRp75 of TNF-alpha (type II), and SR of IL-6 in the serum.
Results:
T-cell immunodeficiency was detected at all stages of HIV infection accompanied by CD3+ and CD4+ cell deficiency and decreased immunoregulatory index. The cytokine profile changes were indicative of a more noticeable reduction in the functional activity of T helper cells type I in patients with HIV-associated tuberculosis.
Conclusion:
The efficiency of ARVT in patients with HIV-associated tuberculosis was confirmed by a lower viral load and higher CD4+ cells. Heterodirectional changes in the content of cytokines and their receptors characterized by a considerable increase in the levels of TNF-alpha, IL-6, SR of TNF-alpha and a drastic reduction in the level of SR of IL-6 may be considered as a marker of immune recovery.
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