中华临床医师杂志(电子版)
中華臨床醫師雜誌(電子版)
중화림상의사잡지(전자판)
CHINESE JOURNAL OF CLINICIANS(ELECTRONIC VERSION)
2013年
9期
3930-3934
,共5页
滕建曦%刘国庆%孔亮亮%黎庆锋%孔连宝
滕建晞%劉國慶%孔亮亮%黎慶鋒%孔連寶
등건희%류국경%공량량%려경봉%공련보
再灌注损伤%微RNAs%A20%小鼠
再灌註損傷%微RNAs%A20%小鼠
재관주손상%미RNAs%A20%소서
Reperfusion injury%MicroRNAs%A20%Mice
目的探讨微小RNA29(miR-29)在小鼠肝脏缺血再灌注损伤(IRI)模型中的保护作用及机制。方法建立小鼠肝脏缺血再灌注模型,将16只雄性成年ICR小鼠随机分为两组:假手术组(对照组,n=8)和缺血再灌注损伤组(IRI组,n=8)。通过比较两组血清谷丙转氨酶(ALT)和谷草转氨酶(AST)变化以及光镜观察肝脏组织病理学改变鉴定模型;采用定时定量PCR法( real time PCR )比较两组肝脏组织的miR-29表达;蛋白免疫印迹法( Western blot )检测肝脏组织中miR-29的潜在靶向抑制基因A20的蛋白表达水平。结果与对照组相比IRI组ALT和AST明显升高( P<0.01),肝组织呈现明显的IRI病理改变;IRI组肝脏miR-29表达较对照组降低约20%( P<0.05),而A20表达水平明显上调。结论小鼠肝脏IRI后miR-29显著下降,伴随A20的表达上调,miR-29的降低可能通过对靶基因A20的负调控减弱IRI,从而对肝脏起保护作用。
目的探討微小RNA29(miR-29)在小鼠肝髒缺血再灌註損傷(IRI)模型中的保護作用及機製。方法建立小鼠肝髒缺血再灌註模型,將16隻雄性成年ICR小鼠隨機分為兩組:假手術組(對照組,n=8)和缺血再灌註損傷組(IRI組,n=8)。通過比較兩組血清穀丙轉氨酶(ALT)和穀草轉氨酶(AST)變化以及光鏡觀察肝髒組織病理學改變鑒定模型;採用定時定量PCR法( real time PCR )比較兩組肝髒組織的miR-29錶達;蛋白免疫印跡法( Western blot )檢測肝髒組織中miR-29的潛在靶嚮抑製基因A20的蛋白錶達水平。結果與對照組相比IRI組ALT和AST明顯升高( P<0.01),肝組織呈現明顯的IRI病理改變;IRI組肝髒miR-29錶達較對照組降低約20%( P<0.05),而A20錶達水平明顯上調。結論小鼠肝髒IRI後miR-29顯著下降,伴隨A20的錶達上調,miR-29的降低可能通過對靶基因A20的負調控減弱IRI,從而對肝髒起保護作用。
목적탐토미소RNA29(miR-29)재소서간장결혈재관주손상(IRI)모형중적보호작용급궤제。방법건립소서간장결혈재관주모형,장16지웅성성년ICR소서수궤분위량조:가수술조(대조조,n=8)화결혈재관주손상조(IRI조,n=8)。통과비교량조혈청곡병전안매(ALT)화곡초전안매(AST)변화이급광경관찰간장조직병이학개변감정모형;채용정시정량PCR법( real time PCR )비교량조간장조직적miR-29표체;단백면역인적법( Western blot )검측간장조직중miR-29적잠재파향억제기인A20적단백표체수평。결과여대조조상비IRI조ALT화AST명현승고( P<0.01),간조직정현명현적IRI병리개변;IRI조간장miR-29표체교대조조강저약20%( P<0.05),이A20표체수평명현상조。결론소서간장IRI후miR-29현저하강,반수A20적표체상조,miR-29적강저가능통과대파기인A20적부조공감약IRI,종이대간장기보호작용。
Objective To explore the protective mechanism of mircoRNA 29 ( miR-29 ) after liver ischemia reperfusion injury(IRI)model of mice.Methods To built a mice liver IRI model,16 male ICR mice were randomly divided into two groups:control group(n=8)and IRI group(n=8).Compare the level of ALT and AST,observe the liver histology after 2 hours reperfusion in two groups .Detect the expression of miR-29 by qRT-PCR and A20,the potential target gene of miR-29 by Western blot in mice liver tissue .Results The level of ALT ,AST in IRI group of serum samples were significantly higher than that of control group ( P<0.01 ) .The level of A20 in IRI group was significantly higher than control group while the expression of miR-29 in IRI group was 20%lower than control group ( P<0.05 ) .Conclusion The expression of miR-29 was significantly down-regulated after liver IRI in mice .The underline protective mechanism is possibly that A 20 is the potential target of miR-29b.