出 处:《中华实验外科杂志》2015年第6期1347-1350,共4页Chinese Journal of Experimental Surgery
摘 要:目的 观察渥曼青霉素(wortmannin)对急性胰腺炎并发肾功能损伤的治疗作用,探讨wortmannin对磷酸肌醇3激酶(PI3K)/蛋白激酶B(PKB)信号转导通路的影响.方法 80只健康清洁级SD雄性大鼠,随机分为正常对照组、假手术组(SO组)、急性胰腺炎组(AP组)和wortmannin 组,其中SO组、AP组和wortmannin组再分为3、6、12 h亚组,每组8只.胆胰管内逆行注射法制作AP模型,wortmannin组术前4h腹腔注射wortmannin.取外周血、肾脏和胰腺,分别检测血清尿素氮、肌酐、淀粉酶、肾脏和胰腺病理学检查和肾脏和胰腺中PKB、p-PKB和肿瘤坏死因子-α(TNF-α)蛋白检查.结果 AP组和wortmannin组术后3h大鼠肾脏和胰腺病理损伤程度、外周血清中尿素氮[(9.81 ±1.28)、(77.49±1.17)比(5.33 ±0.32) mmol/L]、肌酐[(62.19±5.84)、(55.12 ±5.27)比(45.13 ±3.01) μmol/L]、淀粉酶水平水平[(2931 ±619)、(2061 ±897)比(677±120) U/L]显著高于SO组(P<0.05),且术后6h和12h差异更加明显;术后12 h wortmannin组肾脏和胰腺病理损伤程度、外周血清中尿素氮[(16.51±2.00)比(21.16±2.57) mmol/L]、肌酐[(94.63±11.30)比(116.24±14.82) μmol/L]、淀粉酶水平[(3 264±932)比(7725±1 517) U/L]、肾脏和胰腺中p-PKB(1.01 ±0.24比1.23±0.30)和TNF-α(1.11 ±0.29比1.33±0.37)蛋白表达水平显著低于AP组(P<0.05).结论 PI3K/PKB信号转导通路的激活在急性胰腺炎并发肾功能损伤的发生和发展的过程中起着非常重要的作用,采用PI3K抑制剂wortmannin可以显著改善急性胰腺炎并发肾功能的损伤.Objective To explore the therapeutic effect of wortmannin on acute pancreatitis (AP) with renal dysfunction and on phosphatidylinositol 3 kinase (PI3K)/protein kinase B (PKB) signaling pathway.Methods Eighty healthy male SD rats were randomly divided into normal control group,sham operation group (SO group),AP group and wortmannin group.SO group,AP group and wortmannin group were further divided into 3,6 and 12 h sub-groups (n =8 each).The AP model was established by bile duct retrograde injection.Wortmannin was intraperitoneally injected 4 h before operation.Serum urea nitrogen,creatinine,amylase,pathological findings of the kidney and pancreas,and PKB,p-PKB and tumor necrosis factor-α (TNF-α) proteins in the kidney and pancreas were observed.Results Histopathological damage of the kidney and pancreas was severer,blood urea nitrogen [(9.81 ± 1.28) and (77.49±1.17) vs.(5.33 ±0.32) mmol/L],creatinine [(62.19 ±5.84) and (55.12 ±5.27) vs.(45.13 ±3.01) μmol/L] and amylase levels [(2 931 ±619) and (2 061 ±897) vs.(677 ± 120) U/L] were significantly higher in AP group and wortmannin group than in SO group 3 h after operation (P < 0.05),more significantly in 6 h and 12 h sub-groups.Histopathological damage of the kidney and pancreas was severed,blood urea nitrogen [(16.51 ± 2.00) vs.(21.16 ± 2.57) mmol/L],creatinine [(94.63±11.30) vs.(116.24± 14.82) μmol/L],amylase levels [(3264±932) vs.(7725± 1 517) U/L],p-PKB (1.01 ± 0.24 vs.1.23±0.30) andTNF-αproteins (1.11±0.29vs.1.33± 0.37) levels were significantly lower in wortmannin group than in AP group at 12 h after operation (P < 0.05).Conclusion Activation of PI3K/PKB signaling pathway plays a very important role in the occurrence and development of AP with renal function dysfunction.PI3K inhibitors (wortmannin) can significantly alleviate the renal function damage induced by AP.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...