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[摘要]目的 研究脾阳虚模型大鼠腹腔主要消化吸收结构表面微循环血流量的变化,并从血栓素A2(TXA2)/前列环素2(PGI2)(T/P)比值方面探讨其发生机制。方法 选取16只SPF级雄性SD大鼠,随机分为对照组和脾阳虚组(模型组),每组8只。采用激光散斑技术检测大鼠肝、胰腺、胃、小肠和小肠系膜等表面微循环的实时血流量,采用ELISA法检测血清TXA2和PGI2水平。结果 与对照组相比,模型组大鼠肝左叶、肝右侧叶、胰腺、胃和小肠的血流量及T/P比值均显著增加(均P<0.01),但小肠系膜血流量和血清PGI2浓度却明显减少(均P<0.01)。结论 脾阳虚时腹腔主要消化结构存在血流增加现象,其机制与T/P比值升高有关。
[关键词]脾阳虚;血流量;肝;胰腺;胃;小肠;血栓素A2;前列环素2
[中图分类号] R-332 [文献标识码] A [文章编号] 1674-4721(2017)02(c)-0109-03
Study of blood flows in main visceral organs of digestion and absorption in spleen yang deficiency and its underlying mechanism
QIAO Hai-feng1,2 LIU Wen-jun1 LIU Xu-dong1 WANG Ling-zhi1 LIU Hui-hui1 WANG De-shan1 SHAN De-hong1▲
1.Center Hospital of Chaoyang City in Liaoning Province,Chaoyang 122000,China;2.Liaoning University of Traditional Chinese Medicine,Shenyang 110847,China
[Abstract]Objective To study blood flow changes of main visceral organs of digestion and absorption in spleen yang deficiency and its possible mechanism from the ratio of thromboxane A2 (TXA2) and prostacyclin (PGI2).Methods 16 SPF rats were randomly divided into the control and the spleen yangdeficiency group (the model group),8 rats in each group.Laser speckle was used to detect blood flow changes in liver,pancreas,stomach,small intestine (SI) and its mesenterium.ELISA was employed to measure serum thromboxane A2 (TXA2) and prostacyclin (PGI2) concentrations.Results Compared with those in the control group,blood flows inliver left and right lobes,pancreas,stomach and small intestine and TXA2/PGI2 (T/A) value were significantly increased in the model group (all P<0.01),but blood flow of SI mesenterium and serum PGI2 level were decreased obviously in the model group (all P<0.01).Conclusion There is enhancement of blood flows in main visceral organs of digestion and absorption in spleen yang deficiency,and its underlying mechanism might be attributed to the increase of T/P value.
[Key words]Spleen yang deficiency;Blood flux;Liver;Pancreas;Stomach;Small intestine;Thromboxane A2;Prostacyclin 2脾陽虚证是临床常见证候,常是脾气虚的进一步发展,既有食少、腹胀、便溏等脾气虚的表现,又有脾阳温煦作用减弱所导致的脘痛喜温喜按、形寒肢冷等虚寒症状。中医认为脾为气血生化之源,气为血之帅,脾阳虚时不仅气血化生不足,同时还会出现阳气虚衰所致血行不利的情况。研究显示,脾阳虚患者存明显的甲襞与舌微循环的血液流速减慢、异形管襻增多[1],提示机体表层血流减少,但内脏血流是否也存在异常尚不清楚。为此,本研究主要利用激光散斑技术,观察脾阳虚大鼠腹腔主要消化吸收结构表面微循环的血流量变化,并从血栓素A2(thromboxane A2,TXA2)/前列环素(prostacyclin,PGI2)(T/P)比值方面探讨其可能机制。
1材料与方法
1.1实验动物与分组
16只SPF级雄性SD大鼠,购自辽宁省本溪巿实验动物中心[SCXK(辽)-2010-0001],体质量(200±10)g,随机分为对照组和脾阳虚组(模型组),每组8只。……