Off-pump coronary artery bypass grafting does not reduce lymphocyte activation

International Journal of Cardiology
C BlacherJ P Ribeiro

Abstract

In this study, we test the hypothesis that off-pump coronary bypass surgery might result in less lymphocyte activation than on-pump coronary surgery. We also study the behavior of lymphocyte activation markers during and after surgery. Coronary artery bypass surgery is known to be associated with changes of inflammatory mediators, immune function, and early phase lymphocyte activation, which could cause postoperative lymphopenia and lymphocyte unresponsiveness. We studied lymphocyte activation response in 28 patients randomized to off-pump (n = 13) or on-pump (n = 15) coronary artery bypass surgery. Expression of CD25, CD26, CD69, and DR on T (CD3+) and B (CD19+) lymphocytes on peripheral blood was assessed through flow cytometry. The response of T lymphocytes and their activation markers, as well as B lymphocytes and their activation markers, was similar after on- and off-pump surgery. Overall, T lymphocytes decreased to the lowest level 9 h after surgery and tended to increase later. For B lymphocytes, there was early reduction with increase on the 1st postoperative day. There was early activation of CD69+ and late activation of CD25+ on T lymphocytes. For B lymphocytes, there was early activation of CD69+ and late activation...Continue Reading

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Citations

Dec 15, 2010·Asian Cardiovascular & Thoracic Annals·Shuichi SuzukiYuichi Ueda
Sep 16, 2015·Innovations : Technology and Techniques in Cardiothoracic and Vascular Surgery·John D PuskasVipin Zamvar
Mar 16, 2012·The Cochrane Database of Systematic Reviews·Christian H MøllerChristian Gluud

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