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The Annals of Thoracic Surgery, Vol 39, 207-211, Copyright © 1985 by The Society of Thoracic Surgeons
H van Velzen-Blad, YJ Dijkstra, GA Schurink, HA Verbrugh, J Verhoef, BJ Zegers and RE Ballieux
In patients undergoing open-heart surgical procedures, the serum levels of
immunoglobulins and complement were determined as well as the functional
capacity of these defense proteins as opsonins to facilitate phagocytosis
by polymorphonuclear leukocytes. A considerable decrease in serum levels of
the proteins studied was found after cardiopulmonary bypass (CPB). As a
result, the opsonic capacity of post-CPB plasma was diminished. After
correction for hemodilution, however, no difference between pre- and
post-CPB plasma, as measured by the activity of thermolabile (e.g.,
complement C3) and thermostabile (e.g., immunoglobulin IgG) opsonins, could
be demonstrated. It is concluded that CPB causes a quantitative but no
functional decrease in levels of IgG and C3.
ARTICLES
Cardiopulmonary bypass and host defense functions in human beings: I. Serum levels and role of immunoglobulins and complement in phagocytosis
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