Abstract:
BACKGROUND:Interleukin (IL)-10 is a potent antiinflammatory cytokine inhibiting the release of tumor necrosis factor--alpha (TNF-alpha) and IL-8 by activated macrophages and polymorphonuclear leukocytes. Cardiopulmonary bypass (CPB) represents a unique situation where an inflammatory reaction is predictably induced. The present study examined the influence of CPB on the release of TNF-alpha, IL-1 beta, IL-8, and IL-10 and also defined the effects of pretreatment with corticosteroids on the release of these cytokines. METHODS:The study included 22 patients undergoing coronary artery bypass graft operations, including eight control patients and seven patients who received dexamethasone, and seven patients who received methylprednisolone 4 hours before the operation. Cytokines were measured with the enzyme-linked immunosorbent assay technique before treatment, before anesthesia induction, immediately before heparin administration, before aorta declamping, 10 minutes and 90 minutes after aorta declamping, and 4 hours after the end of CPB. RESULTS:In the control patients the TNF-alpha levels and especially the IL-8 levels increased during CPB and reached their maximal levels 4 hours after CPB. IL-10 levels rose moderately and transiently, reaching peak values 90 minutes after aorta declamping. Notably, administration of corticosteroids prevented IL-8 release but increased IL-10 levels, which were tenfold higher than in the control group 90 minutes after aorta declamping (dexamethasone, 271 +/- 128 pg/ml; methylprednisolone, 312 +/- 213 pg/ml; control, 17 +/- 12 pg/ml, p < 0.05). IL-1 beta was not detected in any group of patients. CONCLUSIONS:The present data indicate that IL-10 is released together with proinflammatory cytokines during and after CPB and that pretreatment with corticosteroids markedly enhances this release. The release of IL-10 may play an important role in the antiinflammatory effects of corticosteroids.
journal_name
Surgeryjournal_title
Surgeryauthors
Tabardel Y,Duchateau J,Schmartz D,Marécaux G,Shahla M,Barvais L,Leclerc JL,Vincent JLdoi
10.1016/s0039-6060(96)80217-0subject
Has Abstractpub_date
1996-01-01 00:00:00pages
76-80issue
1eissn
0039-6060issn
1532-7361pii
S0039-6060(96)80217-0journal_volume
119pub_type
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