机构地区:[1]中国医学科学院北京协和医学院北京协和医院肠外肠内营养科协和转化医学中心,北京100730
出 处:《中华实验外科杂志》2011年第12期2165-2168,共4页Chinese Journal of Experimental Surgery
基 金:基金项目:北京自然科学基金资助项目(7102127)
摘 要:目的观察大鼠肠道缺血再灌注损伤后血和肠淋巴液中的成分变化。方法SPF级SD健康雄性大鼠,体质量(300±20)g,随机分为肠道缺血再灌注+肠淋巴液引流(I/R+D)组和普通引流(N+D)组(n=12)。I/R+D组夹闭肠系膜上动脉60min后复灌120rain,同时引流肠系膜淋巴液180min;N+D组开腹后只引流淋巴液180min。收集下腔静脉血和肠系膜淋巴液,进行检测。结果I/R+D组大鼠血清和淋巴液中的内毒素、趋化因子单核细胞趋化蛋白-1(MCP-1)、巨噬细胞炎性蛋白-2(MIP-2)均显著高于N+D组[血清I/R+D:(0.0253±0.0047)EU/ml、(233.7810±28.4538)ng/L、(9.5730±1.5919)ug/L,N+D:(0.0201±0.0074)EU/ml、(164.0112±49.3026)ng/L、(6.9112±0.6719)ug/L;淋巴液I/R+D:(0.0293±0.0364)EU/ml、(87.4787±11.5677)ng/L、(2.4016±0.7695)ug/L,N+D:(0.0079±0.0375)EU/ml、(49.7081±6.7188)ps/ml、(1.2539±0.5348)ug/L;P〈0.05];I/R+D组大鼠血清中的脂蛋白TC、TG、HDL—C显著高于N+D组[血清I/R+D:(2.2467±0.2830)、(2.2233±0.4696)、(0.8017±0.7627)mmol/L;N+D:(1.7050±0.1950)、(1.6500±0.4307)、(0.6750±0.0659)mmol/L;P〈0.05];I/R+D组大鼠血清和淋巴液中Toll样受体4(TLR4)、内源性配体高迁移率族蛋白1(HMGB1)水平也均显著高于N+D组[血清I/R+D:0.5269±0.3621、4.0395±0.5010,N+D:(0.2028±0.0951)、(2.5702±0.1937)ng/ml;淋巴液L/R+D:0.4403±0.0606、6.2603±0.5314,N+D:(0.2887±0.0539)、(5.2388±0.4829)ug/L;P〈0.05]。结论肠道缺血再灌注损伤后血和淋巴液中内毒素、MCP-1、MIP-2、TLR4、HMGB1的增加可能通过“肠-淋巴”途径到达远隔组织从而引起损伤和炎症反应。Objective To research the change of components in blood serum and lymph fluid after intestinal ischemia-reperfusion (I/R) injury of rats. Methods Twenty-four healthy male rats of SPF grade were randomly divide into 2 groups : intestinal I/R + drainage ( I/R + D) group and normal drainage ( N + D ) group. The rats in I/R + D group were subjected to 60 min ischemia by clapping the superior mesenteric artery, followed by 120 min reperfusion. At the same time, the rats in I/R + D group were treated with intestinal lymph drainage for 180 min. Rats in N + D group were only treated with intestinal lymph drainage for 180 min. We compared the changes of endotoxin, HMGB1, TLR4, MCP-1, MIP-2, Lipoprotein by draining lymph fluid and collecting serum in 2 groups. Results The serum and lymph fluid levels of endotoxin, MCP-1, MIP-2 in I/R + D group were significantly higher than those in N + D group [ serum for I/R + D group: (0. 0253 ±0. 0047) EU/ml, (233. 7810 ±28. 4538) ng,/L, (9. 5730 ± 1. 5919) Ixg/L, for N +D group: (0.0201 ±0.0074) EU/ml, (164.0112 ±49.3026) ng/L, (6.9112 ±0.6719) ug/L; lymph fluid for I/R + D group: (0. 0293 ± 0. 0364) EU/ml, (87.4787 ± 11. 5677) ng/L, (2. 40t6 ± 0.7695) ug/L, for N+D group: (0.0079 ±0.0375) EU/ml, (49.7081 ±6.7188) ng/L, (1.2539 +0. 5348 ) ug/L;P 〈 0. 05 ]. The serum levels of TC, TG, HDL-C in I/R + D group were significantly higher than in N + D group [ serum for I/R + D group: (2. 2467 ±0. 2830), (2. 2233 ±0. 4696), (0. 8017 ± 0.7627) mmol/L; for N+D group: (1.7050 ±0.1950), (1.6500 ±0.4307), (0.6750 ±0.0659) mmol/L;P 〈0. 05]. The serum and lymph fluid levels of TLR4 and HMGB1 in I/R + D group were significantly higher than those in N + D group [ serum for I/R + D group : 0. 5269 ± 0. 3621, 4. 0395 ± 0. 5010, for N + D group: (0. 2028 ±0. 0951 ) , (2. 5702 ±0. 1937) ug/L; lymph fluid for I/R + D group: 0.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...