T lymphocyte activation in stable angina pectoris and after percutaneous transluminal coronary angioplasty.
BACKGROUND
Inflammatory reactions have an important part in atherosclerosis. Smooth muscle cells, endothelial cells, monocytes, and T lymphocytes are actively involved. The purpose of this study was to assess whether T lymphocytes are activated in patients with stable angina pectoris who are candidates for a percutaneous transluminal coronary angioplasty (PTCA) and the influence of PTCA on this process.


RESULTS
Twenty-four patients participated in the study. All were 40- to 60-year-old men, and all but one underwent successful PTCA. Blood samples were taken 1 day before PTCA and 1 week, 1 month, and 2 months after. Two groups of patients were detected: group A, 11 patients who had high levels of soluble interleukin-2 receptor (sIL-2R) before PTCA that decreased toward normal during the follow-up period in most of them; and group B, 13 patients who did not have elevated sIL-2R levels before PTCA and in whom sIL-2R levels did not change after the procedure. Group C consisted of 15 healthy men whose sIL-2R levels were in the normal range (control subjects).


CONCLUSIONS
(1) T lymphocytes are activated in stable angina patients. (2) The level of sIL-2R can be a reliable laboratory marker for follow-up of patients after PTCA, especially those with high sIL-2R levels before the procedure.
Blum
A
A
Coronary Care Unit, Beilinson Medical Center, Petah Tiqva, Israel.
Sclarovsky
S
S
Shohat
B
B
D000328:Adult; D000787:Angina Pectoris / Q000276:immunology* / Q000628:therapy; D015906:Angioplasty, Balloon, Coronary; D015415:Biomarkers; D005500:Follow-Up Studies; D006801:Humans; D008213:Lymphocyte Activation; D008297:Male; D008875:Middle Aged; D015375:Receptors, Interleukin-2 / Q000032:analysis*; D013601:T-Lymphocytes / Q000276:immunology* / Q000378:metabolism
D015415:Biomarkers; D015375:Receptors, Interleukin-2