乔海峰 刘文俊 刘旭东 王凌志 刘慧慧 王德山 单德红
【摘要】 目的:通过检测主要消化吸收结构的表面微循环血流量及血清血栓素A2(TXA2)/前列环素I2(PGI2)(T/P)比值,从血流方面探讨脾气虚的发生机制。方法:16只SPF级雄性SD大鼠,随机分为对照组和脾气虚组(模型组),每组8只;激光散斑技术检测大鼠肝、胰腺、胃、小肠和肠系膜等表面微循环的实时血流量;ELISA法检测血清TXA2和PGI2水平。结果:与对照组相比,模型组大鼠胰腺、胃、小肠和肠系膜血流量均显著减少(P<0.01,P<0.05,P<0.05,P<0.01),血清TXA2和T/P比值也明显下降(P<0.05)。结论:脾气虚的发生与胰腺、胃、小肠和肠系膜等部位血流量减少有关,但其机制与T/P比值下降无密切关系。
【关键词】 脾气虚; 胰腺; 胃; 小肠; 肠系膜; TXA2; PGI2; 血流量
Studies of Blood Flow in Pancreas,Small Intestine and Mesenterium and Serum TXA2/PGI2 Value in Spleen Qi Deficiency/QIAO Hai-feng,LIU Wen-jun,LIU Xu-dong,et al.//Medical Innovation of China,2017,14(05):045-048
【Abstract】 Objective:To study the development mechanism of Spleen Qi Deficiency in blood dynamics by detecting blood flow changes in liver,pancreas,stomach,small intestine and mesenterium,and the TXA2/PGI2(T/P) value.Method:A total of 16 SPF rats were randomly divided in the control and Spleen Qi Deficiency group(the model group),8 rats in each group.Laser speckle was used to detect blood flow changes in liver,pancreas,small intestine and mesenterium.ELISA was employed to measure serum TXA2 and PGI2 concentrations.Result:Compared with the control group,blood flows in pancreas,stomach,small intestine and mesenterium in the model group were significantly reduced(P<0.01,P<0.05,P<0.05,P<0.01),and serum TXA2 concentration and
TXA2/PGI2 value in the model group were decreased obviously(P<0.05).Conclusion:The reduction of the blood flow in pancreas,stomach,small intestine and mesenterium contributes to the development of Spleen Qi Deficiency,and its underlying mechanism is not related to the decrease of T/P value.
【Key words】 Spleen Qi Deficiency; Pancreas; Stomach; Small intestine; Mesenterium; TXA2; PGI2; Blood flux
First-authors address:Liaoning University of Traditional Chinese Medicine,Shenyang 110847,China;Chaoyang Central Hospital,Chaoyang 122000,China
doi:10.3969/j.issn.1674-4985.2017.05.011
中醫认为脾主运化,即将水谷转化为气血等精微物质,以供全身所需。中医的“脾”为功能性概念,其定位虽然还存在一定争议,但可能包括了现代医学中与消化吸收等密切相关的结构,如肝、胰腺、胃、小肠和肠系膜等。充足的血液供应是上述结构发挥其正常生理功能的基础,而血供不足则会导致相关消化液分泌不足、胃肠动力下降和吸收障碍。研究发现,血栓素A2(TXA2)能够收缩血管,减少血流量,而前列环素I2(PGI2)能够扩张血管,增加血流量,两者比值在血流调控方面起重要作用[1-3]。脾气虚是临床常见证候,其主要表现是消化吸收功能下降,但从血流量方面解释其发生机制的研究却较少。为此,本研究主要采用激光散斑技术检测肝、胰腺、胃、小肠和肠系膜等表面微循环的血流量变化,进而从血清TXA2/PGI2(T/P)比值方面探讨其变化机制。现报道如下。
1 材料与方法
1.1 实验动物与分组 购辽宁省本溪巿实验动物中心(SCXK(辽)-2010-0001)16只SPF级雄性SD大鼠,体质量(200±10)g,随机分为对照组和模型组(脾气虚组),每组8只。饲养于辽宁中医药大学实验动物中心(SYXK(辽)-2013-000-9),室温18~23 ℃,相对湿度45%~55%,自由饮水进食,适应性饲养1周后,开始实验。