Effects of insulin therapy on inflammatory mediators in infants undergoing cardiac surgery with cardiopulmonary bypass.
To determine whether insulin administration modulates the systemic inflammatory response in infants undergoing cardiac surgery with cardiopulmonary bypass, 60 infants undergoing cardiopulmonary bypass were randomly assigned into a routine therapy group or to an intensive insulin therapy group with 30 infants in each group. Plasma IL-1beta, IL-6, IL-10, and TNF-alpha levels were determined before anesthesia, at the initiation of cardiopulmonary bypass, and at 0, 6, 12, 24, and 48 h after cardiopulmonary bypass. Nuclear factor-kappaBp65 expression and IkappaB expression in peripheral blood mononuclear cells were also measured by Western blot analysis. TNF-alpha, IL-1beta, IL-6, and IL-10 levels were all elevated after the initiation of cardiopulmonary bypass. However, TNF-alpha, IL-1beta, and IL-6 levels were significantly attenuated in the intensive insulin therapy group compared to those in the routine therapy group after initiation of cardiopulmonary bypass (p<0.05 or <0.01). Meanwhile, plasma IL-10 levels were significantly higher in the intensive insulin therapy group than in the routine therapy group after initiation of cardiopulmonary bypass (p<0.05 or <0.01). Accordingly, Nuclear factor-kappaBp65 expression and IkappaB expression were significantly increased after initiation of cardiopulmonary bypass in both groups (p<0.05 or <0.01). The expression of Nuclear factor-kappaBp65, which induces the transcription of pro-inflammatory cytokines was significantly attenuated in the intensive insulin therapy group (p<0.05 or <0.01). Meanwhile, the expression of IkappaB, an inhibitor of NF-kappaB, was significantly higher in the intensive insulin therapy group (p<0.05 or <0.01). These results suggested that intensive insulin therapy may attenuate the systemic inflammatory response in infants undergoing cardiopulmonary bypass.
Gu
Chun-Hu
CH
Department of Cardiovascular Surgery, Xijing Hospital, Fourth Military Medical University, 15# Changle West Road, Xi'an 710032, Shaanxi, China.
Cui
Qin
Q
Wang
Yun-Ya
YY
Wang
Jing
J
Dou
Ya-Wei
YW
Zhao
Rong
R
Liu
Yang
Y
Wang
Jin
J
Pei
Jian-Ming
JM
Yi
Ding-Hua
DH
D001786:Blood Glucose / Q000378:metabolism; D002315:Cardiopulmonary Bypass / Q000009:adverse effects; D005260:Female; D006330:Heart Defects, Congenital / Q000601:surgery; D006801:Humans; D020672:I-kappa B Proteins / Q000097:blood; D007223:Infant; D007249:Inflammation / Q000188:drug therapy; D018836:Inflammation Mediators / Q000097:blood*; D007328:Insulin / Q000097:blood / Q000627:therapeutic use*; D016753:Interleukin-10 / Q000097:blood; D053583:Interleukin-1beta / Q000097:blood; D015850:Interleukin-6 / Q000097:blood; D007432:Intraoperative Period; D008297:Male; D051996:Transcription Factor RelA / Q000097:blood; D014409:Tumor Necrosis Factor-alpha / Q000097:blood
D001786:Blood Glucose; D020672:I-kappa B Proteins; D018836:Inflammation Mediators; D007328:Insulin; D053583:Interleukin-1beta; D015850:Interleukin-6; D051996:Transcription Factor RelA; D014409:Tumor Necrosis Factor-alpha; D016753:Interleukin-10