北京大学学报(医学版)
北京大學學報(醫學版)
북경대학학보(의학판)
Journal of Peking University (Health Sciences)
2015年
5期
743-748
,共6页
李刚%张洪宪%王云鹏%张径%洪锴%田晓军%马潞林
李剛%張洪憲%王雲鵬%張徑%洪鍇%田曉軍%馬潞林
리강%장홍헌%왕운붕%장경%홍개%전효군%마로림
间苯三酚%肾%再灌注损伤%氧化性应激%细胞凋亡
間苯三酚%腎%再灌註損傷%氧化性應激%細胞凋亡
간분삼분%신%재관주손상%양화성응격%세포조망
Phloroglucinol%Kidney%Reperfusion injury%Oxidative stress%Apoptosis
目的:研究间苯三酚对大鼠肾缺血再灌注损伤( ischemia reperfusion injury , IRI)的保护作用及机制。方法:将雄性Wistar大鼠48只平均分为3组( n=16):假手术组( Sham组)切除大鼠右肾后,左肾动脉进行同等分离,但不予夹闭;对照组即肾缺血再灌注组( ischemia reperfusion , I/R组),腹腔注射等量的生理盐水,15 min后切除大鼠右肾,无创动脉夹夹闭左肾动脉45 min;实验组即缺血再灌注间苯三酚预处理组(phloroglucinol,PG组),腹腔注射间苯三酚注射液(30 mg/kg),15 min后切除大鼠右肾,无创动脉夹夹闭左肾动脉45 min。每组动物再均分为两个亚组(n′=8),分别于再灌注后6和24 h将大鼠处死。处死前经下腔静脉取血,检测血清肌酐(secrum creatinine, SCr)、尿素氮(blood urine nitrogen, BUN);将肾于冠状位切成两半,一半组织制作成组织匀浆,取组织上清液检测丙二醛(malondialdehyde, MDA)、过氧化氢酶(catalase, CAT)、超氧化物歧化酶(superoxide dismutase, SOD)及谷胱甘肽过氧化物酶( glutathione peroxidase , GSH-Px);另一半组织行石蜡包埋,切片进行病理组织学观察,再灌注后24 h的大鼠肾组织行核转录因子-kapa B(nuclear factor-kapa B, NF-κB)及Caspase-3免疫组织化学检测。结果:再灌注后6 h,I/R组大鼠血清SCr和BUN分别为(103.9±10.4)μmol/L和(15.2±1.0) mmol/L,PG预处理的SCr及BUN分别为(81.8±13.4)μmol/L和(11.5±1.2) mmol/L;再灌注后24 h,I/R组大鼠血清SCr和BUN分别为(154.9±12.1)μmol/L和(28.1±1.4) mmol/L,PG预处理的SCr及BUN分别为(103.8±5.9)μmol/L和(16.0±1.0) mmol/L;PG预处理组较I/R组明显改善肾功能(P<0.05);苏木素-伊红染色病理图片可见肾小管损伤较I/R组明显减轻(P<0.05);经PG处理后大鼠肾组织内MDA含量较I/R组低(P<0.05),SOD及CAT含量较I/R组高(P<0.05),GSH-Px含量较I/R组高(P<0.05)。再灌注后24 h,经间苯三酚处理的肾组织内核因子-kapa B在细胞核内表达的水平明显降低,活化的Caspase-3亦较I/R组有所减少。结论:间苯三酚通过减轻氧化应激和炎性损伤,抑制细胞凋亡,有效改善了大鼠肾IRI。
目的:研究間苯三酚對大鼠腎缺血再灌註損傷( ischemia reperfusion injury , IRI)的保護作用及機製。方法:將雄性Wistar大鼠48隻平均分為3組( n=16):假手術組( Sham組)切除大鼠右腎後,左腎動脈進行同等分離,但不予夾閉;對照組即腎缺血再灌註組( ischemia reperfusion , I/R組),腹腔註射等量的生理鹽水,15 min後切除大鼠右腎,無創動脈夾夾閉左腎動脈45 min;實驗組即缺血再灌註間苯三酚預處理組(phloroglucinol,PG組),腹腔註射間苯三酚註射液(30 mg/kg),15 min後切除大鼠右腎,無創動脈夾夾閉左腎動脈45 min。每組動物再均分為兩箇亞組(n′=8),分彆于再灌註後6和24 h將大鼠處死。處死前經下腔靜脈取血,檢測血清肌酐(secrum creatinine, SCr)、尿素氮(blood urine nitrogen, BUN);將腎于冠狀位切成兩半,一半組織製作成組織勻漿,取組織上清液檢測丙二醛(malondialdehyde, MDA)、過氧化氫酶(catalase, CAT)、超氧化物歧化酶(superoxide dismutase, SOD)及穀胱甘肽過氧化物酶( glutathione peroxidase , GSH-Px);另一半組織行石蠟包埋,切片進行病理組織學觀察,再灌註後24 h的大鼠腎組織行覈轉錄因子-kapa B(nuclear factor-kapa B, NF-κB)及Caspase-3免疫組織化學檢測。結果:再灌註後6 h,I/R組大鼠血清SCr和BUN分彆為(103.9±10.4)μmol/L和(15.2±1.0) mmol/L,PG預處理的SCr及BUN分彆為(81.8±13.4)μmol/L和(11.5±1.2) mmol/L;再灌註後24 h,I/R組大鼠血清SCr和BUN分彆為(154.9±12.1)μmol/L和(28.1±1.4) mmol/L,PG預處理的SCr及BUN分彆為(103.8±5.9)μmol/L和(16.0±1.0) mmol/L;PG預處理組較I/R組明顯改善腎功能(P<0.05);囌木素-伊紅染色病理圖片可見腎小管損傷較I/R組明顯減輕(P<0.05);經PG處理後大鼠腎組織內MDA含量較I/R組低(P<0.05),SOD及CAT含量較I/R組高(P<0.05),GSH-Px含量較I/R組高(P<0.05)。再灌註後24 h,經間苯三酚處理的腎組織內覈因子-kapa B在細胞覈內錶達的水平明顯降低,活化的Caspase-3亦較I/R組有所減少。結論:間苯三酚通過減輕氧化應激和炎性損傷,抑製細胞凋亡,有效改善瞭大鼠腎IRI。
목적:연구간분삼분대대서신결혈재관주손상( ischemia reperfusion injury , IRI)적보호작용급궤제。방법:장웅성Wistar대서48지평균분위3조( n=16):가수술조( Sham조)절제대서우신후,좌신동맥진행동등분리,단불여협폐;대조조즉신결혈재관주조( ischemia reperfusion , I/R조),복강주사등량적생리염수,15 min후절제대서우신,무창동맥협협폐좌신동맥45 min;실험조즉결혈재관주간분삼분예처리조(phloroglucinol,PG조),복강주사간분삼분주사액(30 mg/kg),15 min후절제대서우신,무창동맥협협폐좌신동맥45 min。매조동물재균분위량개아조(n′=8),분별우재관주후6화24 h장대서처사。처사전경하강정맥취혈,검측혈청기항(secrum creatinine, SCr)、뇨소담(blood urine nitrogen, BUN);장신우관상위절성량반,일반조직제작성조직균장,취조직상청액검측병이철(malondialdehyde, MDA)、과양화경매(catalase, CAT)、초양화물기화매(superoxide dismutase, SOD)급곡광감태과양화물매( glutathione peroxidase , GSH-Px);령일반조직행석사포매,절편진행병리조직학관찰,재관주후24 h적대서신조직행핵전록인자-kapa B(nuclear factor-kapa B, NF-κB)급Caspase-3면역조직화학검측。결과:재관주후6 h,I/R조대서혈청SCr화BUN분별위(103.9±10.4)μmol/L화(15.2±1.0) mmol/L,PG예처리적SCr급BUN분별위(81.8±13.4)μmol/L화(11.5±1.2) mmol/L;재관주후24 h,I/R조대서혈청SCr화BUN분별위(154.9±12.1)μmol/L화(28.1±1.4) mmol/L,PG예처리적SCr급BUN분별위(103.8±5.9)μmol/L화(16.0±1.0) mmol/L;PG예처리조교I/R조명현개선신공능(P<0.05);소목소-이홍염색병리도편가견신소관손상교I/R조명현감경(P<0.05);경PG처리후대서신조직내MDA함량교I/R조저(P<0.05),SOD급CAT함량교I/R조고(P<0.05),GSH-Px함량교I/R조고(P<0.05)。재관주후24 h,경간분삼분처리적신조직내핵인자-kapa B재세포핵내표체적수평명현강저,활화적Caspase-3역교I/R조유소감소。결론:간분삼분통과감경양화응격화염성손상,억제세포조망,유효개선료대서신IRI。
Objective:To investigate the effect and mechanisms of Phloroglucinol ( PG) on renal ische-mia and reperfusion injury (IRI).Methods:Forty-eight male Wistar rats were divided into 3 groups (16 rats per group):sham operated, saline-treated I/R (I/R), and PG-treated I/R (PG).I/R model:Af-ter removing the right kidney , renal I/R injury was induced by clamping the left renal artery for 45 min followed by reperfusion.The rats were administered with PG (30 mg/kg, intraperitoneally) or saline 15 min before renal ischemia .The blood and kidneys were harvested 6 and 24 h after reperfusion .Renal function and histologic changes of serum creatinine (SCr) and blood urea nitrogen(BUN)were assessed. Malondialdehyde (MDA),catalase (CAT),superoxide dismutase (SOD), and glutathione peroxidase (GSH-Px) were measured.Nuclear factor-kapa B ( NF-κB) and caspase-3 in the kidneys were also measured.Results:SCr and BUN were (103.9 ±10.4) μmol/L and (15.2 ±1.0) mmol/L in I/R group, and (81.8 ±13.4) μmol/L and (11.5 ±1.2) mmol/L in PG group 6 h after reperfusion .SCr and BUN were (154.9 ±12.1) μmol/L and (28.1 ±1.4) mmol/L in I/R group, and (103.8 ±5.9)μmol/L和(16.0 ±1.0) mmol/L in PG group 24 h after reperfusion.PG treatment significantly attenua-ted renal dysfunction and histologic damage caused by I /R injury(P<0.05).The I/R-induced elevation in kidney MDA level decreased , where as reduced kidney SOD ,CAT and GSH-Px were increased .What is more , the apoptotic tubular cells , the levels of active caspase-3 ,and active nuclear factor kappa B dra-matically decreased after PG treatment .Conclusion:PG protects murine kidney I/R injury by suppres-sing oxidative stress , inflammation , and cell apoptosis .