喬海峰 劉文俊 劉旭東 王凌志 劉慧慧 王德山 單德紅
【摘要】 目的:通過檢測主要消化吸收結(jié)構(gòu)的表面微循環(huán)血流量及血清血栓素A2(TXA2)/前列環(huán)素I2(PGI2)(T/P)比值,從血流方面探討脾氣虛的發(fā)生機(jī)制。方法:16只SPF級雄性SD大鼠,隨機(jī)分為對照組和脾氣虛組(模型組),每組8只;激光散斑技術(shù)檢測大鼠肝、胰腺、胃、小腸和腸系膜等表面微循環(huán)的實時血流量;ELISA法檢測血清TXA2和PGI2水平。結(jié)果:與對照組相比,模型組大鼠胰腺、胃、小腸和腸系膜血流量均顯著減少(P<0.01,P<0.05,P<0.05,P<0.01),血清TXA2和T/P比值也明顯下降(P<0.05)。結(jié)論:脾氣虛的發(fā)生與胰腺、胃、小腸和腸系膜等部位血流量減少有關(guān),但其機(jī)制與T/P比值下降無密切關(guān)系。
【關(guān)鍵詞】 脾氣虛; 胰腺; 胃; 小腸; 腸系膜; 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(yī)認(rèn)為脾主運(yùn)化,即將水谷轉(zhuǎn)化為氣血等精微物質(zhì),以供全身所需。中醫(yī)的“脾”為功能性概念,其定位雖然還存在一定爭議,但可能包括了現(xiàn)代醫(yī)學(xué)中與消化吸收等密切相關(guān)的結(jié)構(gòu),如肝、胰腺、胃、小腸和腸系膜等。充足的血液供應(yīng)是上述結(jié)構(gòu)發(fā)揮其正常生理功能的基礎(chǔ),而血供不足則會導(dǎo)致相關(guān)消化液分泌不足、胃腸動力下降和吸收障礙。研究發(fā)現(xiàn),血栓素A2(TXA2)能夠收縮血管,減少血流量,而前列環(huán)素I2(PGI2)能夠擴(kuò)張血管,增加血流量,兩者比值在血流調(diào)控方面起重要作用[1-3]。脾氣虛是臨床常見證候,其主要表現(xiàn)是消化吸收功能下降,但從血流量方面解釋其發(fā)生機(jī)制的研究卻較少。為此,本研究主要采用激光散斑技術(shù)檢測肝、胰腺、胃、小腸和腸系膜等表面微循環(huán)的血流量變化,進(jìn)而從血清TXA2/PGI2(T/P)比值方面探討其變化機(jī)制?,F(xiàn)報道如下。
1 材料與方法
1.1 實驗動物與分組 購遼寧省本溪巿實驗動物中心(SCXK(遼)-2010-0001)16只SPF級雄性SD大鼠,體質(zhì)量(200±10)g,隨機(jī)分為對照組和模型組(脾氣虛組),每組8只。飼養(yǎng)于遼寧中醫(yī)藥大學(xué)實驗動物中心(SYXK(遼)-2013-000-9),室溫18~23 ℃,相對濕度45%~55%,自由飲水進(jìn)食,適應(yīng)性飼養(yǎng)1周后,開始實驗。