不同劑量黃芩苷對(duì)氯化鋰—匹羅卡品誘導(dǎo)癲癇持續(xù)狀態(tài)大鼠行為學(xué)及海馬kir4.1蛋白表達(dá)的影響
發(fā)布時(shí)間:2018-07-20 09:30
【摘要】:目的:(1)建立氯化鋰-匹羅卡品誘導(dǎo)癲癇持續(xù)狀態(tài)(Lithium-Pilocarpineinduced status epileptitus,Li-Pilo SE)模型,比較研究不同劑量黃芩苷預(yù)處理對(duì)氯化鋰-匹羅卡品誘導(dǎo)的癲癇持續(xù)狀態(tài)模型大鼠行為學(xué)影響,以探索黃芩苷對(duì)該模型行為學(xué)影響的最佳干預(yù)劑量;(2)研究黃芩苷對(duì)氯化鋰-匹羅卡品誘導(dǎo)的癲癇持續(xù)狀態(tài)模型大鼠kir4.1蛋白表達(dá)的影響及可能的抗癲癇作用機(jī)制。方法:(1)清潔級(jí)的8-10周齡雄性SD大鼠隨機(jī)分為空白對(duì)照組(n=5)、癲癇模型組(n=12)、黃芩苷100、200、400、800mg/kg干預(yù)組(每組n=12)。癲癇模型組和黃芩苷干預(yù)組經(jīng)腹腔注射氯化鋰-匹羅卡品誘導(dǎo)氯化鋰-匹羅卡品癲癇急性期模型,黃芩苷干預(yù)組分別在造模前30分鐘給予黃芩苷(100,200,400,800mg/kg)腹腔注射干預(yù),癲癇模型組和空白對(duì)照組同時(shí)給與等量的生理鹽水腹腔注射,觀察各個(gè)實(shí)驗(yàn)組大鼠癲癇發(fā)作級(jí)別、潛伏期;(2)按照第一部分的方法,分別設(shè)置空白對(duì)照組、癲癇模型組、黃芩苷(最佳劑量)干預(yù)組所需動(dòng)物模型,并分別于SE后1、3天處死,制作蛋白免疫印跡實(shí)驗(yàn)標(biāo)本,采用蛋白免疫印跡(western-blot)方法對(duì)比各實(shí)驗(yàn)組大鼠海馬組織中kir4.1蛋白的表達(dá)。結(jié)果:(1)癲癇行為學(xué)變化:與癲癇模型組比較,不同劑量黃芩苷干預(yù)組大鼠達(dá)到Racine分級(jí)Ⅳ級(jí)-Ⅴ級(jí)發(fā)作潛伏期明顯延長(zhǎng),且差異有統(tǒng)計(jì)學(xué)意義(P0.01);不同劑量黃芩苷干預(yù)組間潛伏期差異無統(tǒng)計(jì)學(xué)意義(P0.05);與癲癇模型組相比,不同劑量黃芩苷干預(yù)組大鼠癲癇發(fā)作Ⅳ-Ⅴ級(jí)大鼠發(fā)生率降低,黃芩苷(100,200,400,800mg/kg)干預(yù)組和癲癇模型組相比癲癇發(fā)作Ⅳ-Ⅴ級(jí)大鼠發(fā)生率有統(tǒng)計(jì)學(xué)差異(P0.05);不同劑量黃芩苷干預(yù)組間癲癇發(fā)作Ⅳ-Ⅴ級(jí)大鼠發(fā)生率無統(tǒng)計(jì)學(xué)差異(P0.05);(2)免疫印跡法顯示,癲癇模型組大鼠海馬組織kir4.1蛋白表達(dá)在SE后1、3天較空白對(duì)照組明顯下調(diào),組間平均光密度比值差異有統(tǒng)計(jì)學(xué)意義(P0.01),黃芩苷200mg/kg干預(yù)組kir4.1蛋白表達(dá)在SE后1、3天較癲癇模型組明顯上調(diào),,組間平均光密度比值差異有統(tǒng)計(jì)學(xué)意義(P0.01)。結(jié)論:(1)不同劑量黃芩苷干預(yù)可以明顯延長(zhǎng)氯化鋰-匹羅卡品致癇大鼠癲癇發(fā)作(Ⅳ級(jí)-Ⅴ級(jí))潛伏期及降低癲癇發(fā)作Ⅳ-Ⅴ級(jí)發(fā)生率,雖然各劑量組黃芩苷干預(yù)后各組間癲癇發(fā)作(Ⅳ級(jí)-Ⅴ級(jí))潛伏期和大鼠癲癇發(fā)作Ⅳ-Ⅴ級(jí)發(fā)生率統(tǒng)計(jì)學(xué)無差異,但從柱狀圖上可見200mg/kg癲癇發(fā)作潛伏期有明顯延長(zhǎng)趨勢(shì),且增加劑量至400mg/kg、800mg/kg后潛伏期不再延長(zhǎng),且有降低趨勢(shì),可能因?yàn)闃颖玖啃《懦鼋y(tǒng)計(jì)學(xué)差異,推測(cè)200mg/kg為可能最佳有效劑量,且有明顯的抗癲癇作用;(2)大鼠癲癇發(fā)作后kir4.1蛋白表達(dá)明顯降低,給與黃芩苷預(yù)處理抑制了kir4.1蛋白表達(dá)降低趨勢(shì),使kir4.1蛋白表達(dá)明顯上調(diào),因此,黃芩苷對(duì)氯化鋰-匹羅卡品急性期模型癲癇持續(xù)狀態(tài)的抗癲癇作用可能是多靶點(diǎn)共同作用的結(jié)果,但對(duì)海馬kir4.1蛋白表達(dá)的上調(diào)可能是其重要作用機(jī)制之一。
[Abstract]:Objective : ( 1 ) To establish a model of lithium - Pilocarpine induced status epilepticus ( Li - Pilo SE ) induced by lithium chloride - pilocarpine , and to compare the effects of different doses of baicalin on the behavior of rats induced by lithium chloride - pilocarpine in rats .
( 2 ) To study the effects of baicalin on the expression of kir4.1 protein in rats induced by lithium chloride - pilocarpine and its possible mechanism of anti - epilepsy . Methods : ( 1 ) The rats of 8 - 10 weeks old were randomly divided into two groups : blank control group ( n = 5 ) , epilepsy model group ( n = 12 ) , baicalin 100 , 200 , 400 , 800mg / kg group ( n = 12 ) .
( 2 ) According to the method of the first part , the animal models of the intervention group of blank control group , epilepsy model group and baicalin ( optimal dosage ) were respectively set up , and the expression of kir4.1 protein in hippocampus of rats in experimental group was compared with that of epilepsy model group . Results : ( 1 ) The changes of epilepsy behavior : Compared with the epilepsy model group , the latency period of Racine grade 鈪
本文編號(hào):2133110
[Abstract]:Objective : ( 1 ) To establish a model of lithium - Pilocarpine induced status epilepticus ( Li - Pilo SE ) induced by lithium chloride - pilocarpine , and to compare the effects of different doses of baicalin on the behavior of rats induced by lithium chloride - pilocarpine in rats .
( 2 ) To study the effects of baicalin on the expression of kir4.1 protein in rats induced by lithium chloride - pilocarpine and its possible mechanism of anti - epilepsy . Methods : ( 1 ) The rats of 8 - 10 weeks old were randomly divided into two groups : blank control group ( n = 5 ) , epilepsy model group ( n = 12 ) , baicalin 100 , 200 , 400 , 800mg / kg group ( n = 12 ) .
( 2 ) According to the method of the first part , the animal models of the intervention group of blank control group , epilepsy model group and baicalin ( optimal dosage ) were respectively set up , and the expression of kir4.1 protein in hippocampus of rats in experimental group was compared with that of epilepsy model group . Results : ( 1 ) The changes of epilepsy behavior : Compared with the epilepsy model group , the latency period of Racine grade 鈪
本文編號(hào):2133110
本文鏈接:http://sikaile.net/yixuelunwen/shenjingyixue/2133110.html
最近更新
教材專著