肠淋巴途径在大鼠重症急性胰腺炎致全身炎症反应中的作用

被引:8
作者
邹忠东
张再重
王烈
王瑜
郑国华
机构
[1] 南京军区福州总医院普通外科,南京军区普通外科研究所
[2] 福建中医学院统计学教研室
关键词
胰腺炎; 急性; 肠系膜淋巴管结扎; 微循环; 肠屏障功能障碍; 全身炎症反应综合征;
D O I
暂无
中图分类号
R576 [胰腺疾病];
学科分类号
1002 ; 100201 ;
摘要
目的通过肠系膜淋巴管结扎(MLDL)阻断肠淋巴液回流,观察肠淋巴途径在大鼠重症急性胰腺炎(SAP)致全身炎症反应中的作用。方法将24只雄性SD大鼠按随机数字表法分为模型组、结扎组和假手术组,每组8只。采用胰胆管逆行注入牛黄胆酸钠溶液制备SAP合并多器官损伤模型;MLDL于制模前进行。术后24 h测定血中二胺氧化酶(DAO)、D-乳酸、肿瘤坏死因子-α(TNF-α)、白细胞介素-6(IL-6)和内毒素水平及胰腺、肺脏、肝脏组织髓过氧化物酶(MPO)活性。处死大鼠取材,光镜下观察小肠组织形态学变化;培养肠系膜淋巴结细菌并计算细菌移位率。结果与假手术组比较,模型组血中DAO、D-乳酸、TNF-α、IL-6和内毒素水平均显著升高[DAO:(0.64±0.17)kU/L比(0.37±0.07)kU/L,D-乳酸:(8.16±1.79)ng/L比(3.24±1.00)ng/L,TNF-α:(65.21±13.38)ng/L比(22.16±5.04)ng/L,IL-6:(7.95±1.83)ng/L比(4.26±1.23)ng/L,内毒素:(0.068±0.019)kEU/L比(0.033±0.009)kEU/L],肠系膜淋巴结细菌移位率显著提高(75.0%比0),胰腺、肺脏、肝脏MPO活性显著升高[胰腺:(5.14±1.24)U/g比(2.88±0.75)U/g,肺脏:(9.07±2.52)U/g比(4.38±1.29)U/g,肝脏:(6.36±1.63)U/g比(3.19±0.96)U/g,均P<0.01];与模型组比较,结扎组血中DAO[(0.50±0.13)kU/L]、D-乳酸[(6.23±1.25)ng/L]、TNF-α[(48.50±13.23)ng/L]、IL-6[(6.06±1.64)ng/L]和内毒素[(0.048±0.014)kEU/L]均显著降低,肠系膜淋巴结细菌移位率(12.5%)显著减少,胰腺、肺脏、肝脏MPO活性[胰腺:(4.01±1.05)U/g,肺脏:(6.58±1.96)U/g,肝脏:(4.64±1.34)U/g]显著下降(P<0.05或P<0.01)。结论 MLDL可以降低SAP大鼠肠道细菌和内毒素移位,减轻胰腺、肺脏、肝脏组织炎症损伤,保护肠屏障功能。
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