呼吸道合胞病毒感染對(duì)肺組織GRK2的影響及其與哮喘的關(guān)系
發(fā)布時(shí)間:2018-11-11 15:07
【摘要】:目的 :探討呼吸道合胞病毒(respiratory syncytial virus,RSV)感染鼠肺組織后,G蛋白偶聯(lián)受體激酶2(G protein coupled receptor kinase 2,GRK2)的變化規(guī)律及其與哮喘的關(guān)系。方法:Balb/c雌性小鼠100只,隨機(jī)分為5組,每組20只。正常對(duì)照組,于第1、14天予生理鹽水0.2 ml腹腔注射,第21~25天用37℃生理鹽水20 ml霧化吸入30 min;RSV感染組,于第19、20、21天,以RSV按濃度1×106PFU、100μl/次鼻腔滴入;哮喘組,第1、14天予以雞卵白蛋白(ovalbumin,OVA)100μg、AL(OH)32 mg腹腔注射,第21天開始激發(fā),以2%OVA生理鹽水20 ml霧化吸入30 min,持續(xù)激發(fā)5 d;雙重感染組,模型制備同哮喘組,第19、20、21天,以RSV按濃度1×106 PFU、100μl/次鼻腔滴入;地塞米松干預(yù)組,RSV感染同RSV組,第21~25天予腹腔注入地塞米松0.2 mg/(kg·d)。末次激發(fā)后24 h,10%水合氯醛腹腔注射麻醉(0.3 ml/kg),處死小鼠,取左肺上葉和右肺中葉,4%甲醛固定,分別用于免疫熒光檢測(cè)GRK2的表達(dá)和組織病理改變檢測(cè);取右肺下葉用于Western blot檢測(cè)各組GRK2的表達(dá);無(wú)菌條件下取左肺下葉,用于肺組織病毒分離及免疫熒光鑒定。結(jié)果:RSV組GRK2表達(dá)較正常組顯著增加,與哮喘組相比差異有統(tǒng)計(jì)學(xué)意義;雙重感染組GRK2表達(dá)較RSV組顯著增加;地塞米松干預(yù)組GRK2表達(dá)較RSV組顯著減少。結(jié)論:RSV感染小鼠肺組織后GRK2表達(dá)增加,合并哮喘時(shí)表達(dá)顯著增加,地塞米松干預(yù)對(duì)GRK2的表達(dá)有一定的抑制作用。
[Abstract]:Aim: to investigate the changes of G protein coupled receptor kinase 2 (G protein coupled receptor kinase 2) GRK2 and its relationship with asthma after respiratory syncytial virus (respiratory syncytial virus,RSV) infection. Methods: 100 Balb/c female mice were randomly divided into 5 groups with 20 mice in each group. The normal control group was injected intraperitoneally with saline 0.2 ml on day 1 and day 21 25 after inhalation with 37 鈩,
本文編號(hào):2325221
[Abstract]:Aim: to investigate the changes of G protein coupled receptor kinase 2 (G protein coupled receptor kinase 2) GRK2 and its relationship with asthma after respiratory syncytial virus (respiratory syncytial virus,RSV) infection. Methods: 100 Balb/c female mice were randomly divided into 5 groups with 20 mice in each group. The normal control group was injected intraperitoneally with saline 0.2 ml on day 1 and day 21 25 after inhalation with 37 鈩,
本文編號(hào):2325221
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