Related Experiment Videos
Cellular immune response in patients with dilated cardiomyopathy
M Dabrowski1, I Grzelak, V Ruzyłło
1Department of Cardiology, Polish Academy of Sciences, Warsaw.
Cor Et Vasa
|January 1, 1989
Summary
Cell-mediated immune responses in dilated cardiomyopathy (CDM) patients show functional deficiencies, not numerical changes, in immune cells. Natural killer (NK) cell activity and lymphocyte responsiveness were impaired, suggesting a role in disease pathogenesis.
Area of Science:
- Immunology
- Cardiology
Background:
- Dilated cardiomyopathy (CDM) is a complex heart condition.
- The role of cell-mediated immunity in CDM pathogenesis is not fully understood.
Purpose of the Study:
- To evaluate cell-mediated immune responsiveness in patients with dilated cardiomyopathy (CDM).
Main Methods:
- Assessed percentages of monocyte (OKM1), T-cell (OKT3), helper T-cell (OKT4), suppressor T-cell (OKT8), and natural killer (NK) cell (Leu7, Leu11) subsets.
- Measured NK cell cytotoxicity.
- Evaluated ConA-suppressor cell activity and lymphocyte responsiveness to ConA.
Main Results:
- Normal percentages for most lymphocyte subsets (monocytes, T-cells, helper cells, suppressor cells, Leu7 NK cells).
- Decreased percentages of Leu11 NK cells and OKIa1 positive cells.
- Significantly lowered NK cell cytotoxicity.
- Increased ConA-suppressor cell activity with decreased lymphocyte responsiveness to ConA.
Conclusions:
- No consistent numerical changes in lymphocyte subsets were found in CDM patients.
- Functional immune deficiencies, particularly in NK cell activity and lymphocyte responsiveness, were detected.
- These functional alterations may contribute to the pathogenesis of dilated cardiomyopathy.