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[The immunological phenotyping of the lymphocytes in HIV+ patients]
F J Alvarado-Alemán1, J Kumate-Rodríguez
1Departamento de Inmunoquímica, Instituto Nacional de Diagnóstico y Referencia Epidemiológicos (INDRE), Secretaría de Salud, México.
Insights
Graphical display of lymphocyte subset ratios offers a simple immunophenotyping method for HIV patients. This visual representation aids clinicians and patients in understanding immunological status and disease progression.
Area of Science:
- Immunology
- Flow Cytometry
- HIV Research
Background:
- Human Immunodeficiency Virus (HIV) infection significantly alters immune cell populations.
- Monitoring lymphocyte subsets is crucial for assessing HIV disease progression and treatment efficacy.
- Current immunophenotyping methods can be complex for routine clinical interpretation.
Purpose of the Study:
- To propose a novel, simplified graphical method for immunophenotyping based on lymphocyte subset ratios.
- To evaluate the utility of this graphical method in distinguishing HIV-positive individuals from healthy controls.
- To provide an accessible interpretation of immunological status for clinicians and patients.
Main Methods:
- Studied 187 asymptomatic and 83 symptomatic HIV-positive patients, plus 36 healthy controls.
- Utilized flow cytometry to determine lymphocyte subsets: CD4+, CD8+, and CD3+.
- Developed a graphical display plotting CD4+/CD8+, CD4+/CD3+, and CD8+/CD3+ ratios, analyzing resulting angles.
Main Results:
- The graphical display created a distinct 'beach chair' image for the control group.
- HIV-positive patients showed characteristic shifts in the graphical display as CD4+ cells decreased and CD8+ cells increased.
- The visual representation effectively reflected changes in immunological status.
Conclusions:
- Graphical display of lymphocyte subset ratios provides an easy and intuitive method for immunophenotyping in HIV.
- This visual approach simplifies the interpretation of immunological status for both healthcare providers and patients.
- The method offers a potentially valuable tool for monitoring HIV progression and immune reconstitution.
Abstract:
We propose that the ratios of lymphocyte subsets: CD4+/CD8+, CD4+/CD3+, and CD8+/CD3+, graphically displayed in this order, could be an easy way of immunophenotyping and a simple form of interpretation both for clinicians and patients. A total of 187 asymptomatic HIV-positive patients, -including 83 symptomatic patients with AIDS- and a normal comparative age group of 36 patients, were studied by flow cytometry. Ratios were graphically displayed on millimetric-grid paper, and a specific point was given to each obtained ratio. The points were connected by a line. The angles formed by the lines were measured and graphically displayed over a circle. The point of reference 0 degree was located on the left side of the circle, giving the corresponding 90 degrees, 180 degrees, and 240 degrees angles. The graph of the control group shows a "beach chair" image. As soon as the CD4+ lymphocytes diminish and the CD8+ lymphocytes increase in HIV+ patients, "the chair's headrest" descends and the "chair's footpiece" swivels back. Given the ranks and fluctuations of the lymphocyte subsets, their graphic display provides a better representation of the immunological status.
