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Canadian Journal of Anesthesia, Vol 44, 617-622, Copyright © 1997 by Canadian Anesthesiologists' Society

ARTICLES

Enhanced spontaneous antibody response after coronary artery bypass surgery

M Salo, MJ Makela, J Perttila and J Ilonen
Turku Immunology Centre, Finland. Matti.Salo@tyks.fi

PURPOSE: Cells spontaneously secreting immunoglobulins can be seen in the blood one week after open-heart surgery. The purpose of this study was to measure the antibody specificities of activated cells. METHODS: Immune responses were studied preoperatively and on the seventh postoperative day in 18 patients undergoing elective coronary artery bypass surgery. The number of cells secreting adenovirus, measles, rubella and tetanus antigen specific antibodies spontaneously and induced by pokeweed mitogen PWM (ASCs) as well as the total number of cells secreting IgG, IgM and IgA (ISCs) were studied using an enzyme-linked immunospot (ELISPOT) assay. Spontaneous as well as phytohaemagglutinin (PHA)- and pokeweed mitogen (PWM)-induced lymphocyte proliferation was also measured. RESULTS: The number of cells spontaneously secreting IgG, IgM and IgA antibodies was increased on the seventh day after coronary bypass surgery, against adenovirus, measles, rubella and tetanus as well as the total number of cells secreting immunoglobulins IgG, IgM and IgA (P < 0.05/0.001). By contrast, only slight fluctuation was seen in the numbers of cells secreting antibodies after PWM stimulation. Spontaneous lymphocyte proliferation was also increased, PHA proliferative responses were depressed and PWM responses were not changed on the seventh postoperative day compared with preoperative values. CONCLUSION: Coronary artery bypass surgery caused marked polyclonal B cell activation demonstrated by an increase of cells producing spontaneously antibodies against virus antigens and tetanus toxoid. This activation could not be intensified by PWM stimulation.




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Copyright © 1997 by the Canadian Anesthesiologists' Society.