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Prophylactic uses of integrin CD18-βA peptide in a murine polymicrobial peritonitis model
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作者 Kwong-Fai Wong Jana Wo +3 位作者 David Ho Ronnie T Poon José M Casasnovas John M Luk 《World Journal of Gastroenterology》 SCIE CAS CSCD 2010年第21期2648-2656,共9页
AIM:To evaluate the prophylactic properties of integrin CD18-βA peptide in a murine model of abdominal polymicrobial peritonitis and sepsis.METHODS:Bacterial sepsis was induced in Institute of Cancer Research(ICR) mi... AIM:To evaluate the prophylactic properties of integrin CD18-βA peptide in a murine model of abdominal polymicrobial peritonitis and sepsis.METHODS:Bacterial sepsis was induced in Institute of Cancer Research(ICR) mice by cecal ligation and puncture(CLP) surgery.Inflicted mice were then injected with either sterile saline or CD18-βA peptide intraperitoneally at 2 h after surgery,and were sacrificed at 12 and 24 h after surgery.Blood samples were immediately collected,and analyzed for endotoxin activity and tumor necrosis factor(TNF)-α and interleukin(IL)-6.Lungs and liver were studied for CD45+ leukocyte and CD3 mRNA content.Pulmonary expression of intercellular adhesion molecule(ICAM)-1,vascular cell adhesion molecule(VCAM) and E-selectin was also determined.RESULTS:Intraperitoneal injection of CD18-βA peptide significantly suppressed circulating endotoxin activity(P<0.01) at 24 h,as well as serum levels of TNF-α(P<0.05 at 12 and 24 h) and IL-6(P<0.01 at 12 h,P<0.05 at 24 h) in CLP-inflicted mice.CD18-βA peptide also abrogated leukocyte infiltration into liver and lungs as unveiled by reduced CD45+ leukocyte and CD3 mRNA contents.Furthermore,the peptide significantly reduced pulmonary expression of VCAM(P<0.01 at 12 h,P<0.001 at 24 h),E-selectin(P<0.01 at 12 and 24 h),and ICAM-1(P<0.01 at 12 h,P<0.001 at 24 h).These actions of CD18-βA peptide collectively protected septic mice against lethality(P<0.01).CONCLUSION:CD18-βA peptide is a potent endotoxin antagonist that can protect surgical patients against sepsis-associated lethality. 展开更多
关键词 Bacterial endotoxin integrin cd18 Inflammation Biotherapeutic peptide
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乌司他丁对婴儿体外循环中细胞粘附分子变化的影响 被引量:2
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作者 张莉 顾海涛 +3 位作者 戚继荣 张斯璧 陈珏 钱燕宁 《南京医科大学学报(自然科学版)》 CAS CSCD 北大核心 2008年第10期1305-1308,共4页
目的:探讨婴儿体外循环中细胞粘附分子的变化及乌司他丁对其的影响。方法:60例1岁以下先心病患儿随机分为乌司他丁组(U组,UTI20000U/kg,溶解于20ml生理盐水中)和对照组(C组,20ml等量生理盐水)。分别在体外循环不同时点采集血样,检测血... 目的:探讨婴儿体外循环中细胞粘附分子的变化及乌司他丁对其的影响。方法:60例1岁以下先心病患儿随机分为乌司他丁组(U组,UTI20000U/kg,溶解于20ml生理盐水中)和对照组(C组,20ml等量生理盐水)。分别在体外循环不同时点采集血样,检测血管内皮细胞粘附分子-1(ICAM-1)和中性粒细胞整合素β-2亚族中的CD11b/CD18的蛋白表达量并观察其变化;检测血气值并计算呼吸指数(RI)。结果:体外循环后两组ICAM-1和CD11b/CD18的表达量均显著增加,RI上升,但乌司他丁组各相应值明显低于对照组(P<0.05)。结论:婴儿体外循环中,ICAM-1、CD11b/CD18和RI值均有明显升高,乌司他丁可减缓此变化过程。 展开更多
关键词 婴儿 体外循环 血管内皮细胞粘附分子-I 整合素β-2亚族(CD1 1b/cd18) 乌司他丁
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