参附注射液对糖尿病大鼠心肌缺血再灌注时PTEN和P13 K表达的影响

Objective To investigate the effect of Shenfu injectio (SFI) on the expression of phosphatase and tensin homolog deleted on chromosome 10 (PTEN) and phosphatidylinositol 3-kinase (PI3K) during myocardial ischemia-reperfusion (IR) in diabetic rats.Methods Thirty adult male diabetic SD rats weighing 220-280 g were used in this study. Diabetes mellitus was induced with intraperitoneal streptozotocin 60 mg/kg and confirmed by fasting blood glucose > 16.7 mmol/L. The animals were randomly divided into 3 groups ( n = 10 each): group I sham operation (group S); group II IR and group Ⅲ SFI. Myocardial IR was produced by occlusion of left anterior descending branch (LAD) of coronary artery for 30 min followed by 120 min reperfusion in group IR and SFI. LAD was exposed but not occluded in group S.SFI was infused iv at 10 ml·kg-1 ·h-1 before opening the thoracic cavity and at 3ml·kg-1·h-1 after opening the thoracic cavity in group SFI until the end of operation. Equal volume of Lactated Ringer's solution and hydroxyethyl starch was infused instead of SFI in group S and IR. The rats were killed and hearts removed at 120 min of reperfusion for microscopic examination and determination of cardiomyocyte apoptosis (by TUNEL)and expression of PTEN and PDK (by immunohistochemical method). PTEN/PI3K ratio, myocardial infarct size of left ventricle and apoptosis index were calculated.Correlation between apoptosis index and PTEN/PI3K ratio was analyzed. Results Myocardial infarct size and apoptosis index were significantly increased, while expression of PTEN and PI3K was up-regulated in group IR and SFI as compared with group S ( P < 0.05 or 0.01) . PTEN/PI3K ratio was significantly decreased in group SFI as compared with group S (P< 0.05). Myocardial infarct size and apoptosis index were significantly decreased, PTEN expression was down-regulated, PI3K expression was up-regulated and PTEN/PI3K ratio was significantly decreased in group SFI as compared with group IR( P < 0.05) . Myocardial pathological damage was attenuated in group SFI as compared with group IR. Apoptosis index was positively correlated to PTEN/PI3K ratio (r =0.452,P <0.05) .Conclusion SFI can attenuate myocardial IR injury via down-regulating the expression of PTEN,up-regulating the expression of PBK and activating PI3K/Akt signal pathway in diabetic rats.     

参附注射液对糖尿病大鼠心肌缺血／再灌注损期间PTEN表达的影响

目的 观察参附注射液(SFI)对心肌缺血/再灌注期间糖尿病大鼠PTEN表达的影响,探讨其对糖尿病心肌缺血/再灌注损伤保护作用分子机制.方法 健康雄性SD大鼠,腹腔注射链尿佐菌素60 mg/kg制备糖尿病模型.造模成功的30只大鼠再喂养8周,随机分为三组(n=10):假手术组(S组)、缺血/再灌注组(I/R组)、SFI防治组(SFI组).S组只穿线包绕冠状动脉左前降支,I/R组结扎冠状动脉左前降支30 min后松开制备心肌缺血/再灌注模型,SFI组开胸前持续泵注SFI 10 mL·kg-1·h-1,开胸后以3 mL·kg-1·h-1持续输注至手术结束,S组和I/R组开胸前持续泵注晶胶液(晶胶比为3∶ 1)10 mL·kg-1·h-1,开胸后以3 mL·kg-1·h-1持续输注至手术结束.再灌注120 min时处死大鼠计算左心室心肌梗死面积、检测心肌凋亡百分比和PTEN表达,并观察心肌组织病理变化.结果 与S组比较,I/R组、SFI组心肌梗死面积,心肌细胞凋亡百分比均增加,PTEN表达增强(P＜0.05或0.01);与I/R组比较,SFI组心肌梗死面积,心肌细胞凋亡百分比和PTEN表达均降低(P＜0.05或0.01).SFI组心肌组织病理损伤程度明显轻于I/R组.结论 SFI能减轻糖尿病心肌缺血/再灌注损伤,其机制与其抑制心肌细胞PTEN的表达、减少心肌细胞凋亡有关.     

参附注射液对糖尿病大鼠心肌缺血／再灌注期间磷脂酰肌醇3激酶表达的影响

目的 探讨参附注射液(SFI)对糖尿病大鼠心肌缺血/再灌注(I/R)损伤的保护作用及其分子机制.方法 采用腹腔注射链脲佐菌素(STZ)法建立糖尿病大鼠模型.取制模成功的SD大鼠30只,喂养8周后随机分成假手术(sham)组、I/R组、SFI组,每组10只.sham组大鼠对冠状动脉(冠脉)只穿线不结扎;其余两组大鼠通过结扎心脏左冠脉前降支30 min、再灌注120 min制备I/R模型.SFI组于开胸前持续泵注SFI 10 ml·kg-1·h-1,开胸后为3 ml·kg-1·h-1;其余两组泵注等量晶胶液.光镜下进行心肌组织病理学观察,测定各组心肌梗死面积;原位末端缺刻标记法(TUNEL)检测心肌细胞凋亡,计算细胞凋亡指数;免疫组化染色检测心肌磷脂酰肌醇3激酶(PI-3K)表达.结果 SFI组心肌梗死面积较I/R组明显减少[(36.32±2.72)%比(47.26±3.48)%,P<0.05].I/R组凋亡细胞显著增多;SFI组凋亡细胞较I/R组显著减少,而多于sham组(P均<0.05).与sham组和I/R组比较,SFI组的心肌PI-3K表达明显升高(P均<0.05).结论 SFI能明显减轻糖尿病时心肌I/R损伤,其机制可能与激活PI-3K/Akt信号通路而发挥心肌保护作用有关.     

妊娠合并肺动脉高压患者剖宫产的围麻醉期管理

目的：探讨妊娠合并肺动脉高压（PH）患者剖宫产术的安全、有效、科学的围麻醉期管理。方法：选择2011年1月—2021年12月于武汉大学人民医院住院治疗、行剖宫产术的18名妊娠合并PH患者为研究对象,对临床资料进行详细地回顾性分析。结果：18例(100%)妊娠合并PH患者安全完成剖宫产手术,4例(22.2%)安全返回病房;14例(77.8%)术后转入ICU进一步治疗,其中1例(5.6%)患者突发心跳骤停后昏迷。术后24 h 17例(94.4%)患者病情稳定。结论：多学科协作诊疗、充分的术前准备、科学的麻醉管理是妊娠合并PH患者围麻醉期的安全保障。     

控制性降压联合血液稀释在椎管内减压手术中的应用

目的 研究控制性降压联合血液稀释在椎管内减压手术中的应用。方法 86例进行腰椎减压内固定术的患者,随机分为观察组和对照组,各43例。对照组行单纯控制性降压,观察组采取术前给予患者急性高容量血液稀释联合控制性降压,比较两组患者术中的循环检测指标,记录其出血及输血量。结果 观察组患者的失血量、输血量明显少于对照组;观察组患者的血红蛋白(Hb)、血细胞比容(HCT)明显高于对照组,差异均具有统计学意义(P<0.05)。结论 控制性降压联合血液稀释应用于椎管内减压手术,可有效减少术中患者的出血和输血量,改善微循环,提高节约用血效果。     

参附注射液对糖尿病大鼠心肌缺血再灌注时PTEN和P13 K表达的影响

Objective To investigate the effect of Shenfu injectio (SFI) on the expression of phosphatase and tensin homolog deleted on chromosome 10 (PTEN) and phosphatidylinositol 3-kinase (PI3K) during myocardial ischemia-reperfusion (IR) in diabetic rats.Methods Thirty adult male diabetic SD rats weighing 220-280 g were used in this study. Diabetes mellitus was induced with intraperitoneal streptozotocin 60 mg/kg and confirmed by fasting blood glucose > 16.7 mmol/L. The animals were randomly divided into 3 groups ( n = 10 each): group I sham operation (group S); group II IR and group Ⅲ SFI. Myocardial IR was produced by occlusion of left anterior descending branch (LAD) of coronary artery for 30 min followed by 120 min reperfusion in group IR and SFI. LAD was exposed but not occluded in group S.SFI was infused iv at 10 ml·kg-1 ·h-1 before opening the thoracic cavity and at 3ml·kg-1·h-1 after opening the thoracic cavity in group SFI until the end of operation. Equal volume of Lactated Ringer's solution and hydroxyethyl starch was infused instead of SFI in group S and IR. The rats were killed and hearts removed at 120 min of reperfusion for microscopic examination and determination of cardiomyocyte apoptosis (by TUNEL)and expression of PTEN and PDK (by immunohistochemical method). PTEN/PI3K ratio, myocardial infarct size of left ventricle and apoptosis index were calculated.Correlation between apoptosis index and PTEN/PI3K ratio was analyzed. Results Myocardial infarct size and apoptosis index were significantly increased, while expression of PTEN and PI3K was up-regulated in group IR and SFI as compared with group S ( P < 0.05 or 0.01) . PTEN/PI3K ratio was significantly decreased in group SFI as compared with group S (P< 0.05). Myocardial infarct size and apoptosis index were significantly decreased, PTEN expression was down-regulated, PI3K expression was up-regulated and PTEN/PI3K ratio was significantly decreased in group SFI as compared with group IR( P < 0.05) . Myocardial pathological damage was attenuated in group SFI as compared with group IR. Apoptosis index was positively correlated to PTEN/PI3K ratio (r =0.452,P <0.05) .Conclusion SFI can attenuate myocardial IR injury via down-regulating the expression of PTEN,up-regulating the expression of PBK and activating PI3K/Akt signal pathway in diabetic rats.     

参附注射液对糖尿病大鼠心肌缺血再灌注时PTEN和P13 K表达的影响

Objective To investigate the effect of Shenfu injectio (SFI) on the expression of phosphatase and tensin homolog deleted on chromosome 10 (PTEN) and phosphatidylinositol 3-kinase (PI3K) during myocardial ischemia-reperfusion (IR) in diabetic rats.Methods Thirty adult male diabetic SD rats weighing 220-280 g were used in this study. Diabetes mellitus was induced with intraperitoneal streptozotocin 60 mg/kg and confirmed by fasting blood glucose > 16.7 mmol/L. The animals were randomly divided into 3 groups ( n = 10 each): group I sham operation (group S); group II IR and group Ⅲ SFI. Myocardial IR was produced by occlusion of left anterior descending branch (LAD) of coronary artery for 30 min followed by 120 min reperfusion in group IR and SFI. LAD was exposed but not occluded in group S.SFI was infused iv at 10 ml·kg-1 ·h-1 before opening the thoracic cavity and at 3ml·kg-1·h-1 after opening the thoracic cavity in group SFI until the end of operation. Equal volume of Lactated Ringer's solution and hydroxyethyl starch was infused instead of SFI in group S and IR. The rats were killed and hearts removed at 120 min of reperfusion for microscopic examination and determination of cardiomyocyte apoptosis (by TUNEL)and expression of PTEN and PDK (by immunohistochemical method). PTEN/PI3K ratio, myocardial infarct size of left ventricle and apoptosis index were calculated.Correlation between apoptosis index and PTEN/PI3K ratio was analyzed. Results Myocardial infarct size and apoptosis index were significantly increased, while expression of PTEN and PI3K was up-regulated in group IR and SFI as compared with group S ( P < 0.05 or 0.01) . PTEN/PI3K ratio was significantly decreased in group SFI as compared with group S (P< 0.05). Myocardial infarct size and apoptosis index were significantly decreased, PTEN expression was down-regulated, PI3K expression was up-regulated and PTEN/PI3K ratio was significantly decreased in group SFI as compared with group IR( P < 0.05) . Myocardial pathological damage was attenuated in group SFI as compared with group IR. Apoptosis index was positively correlated to PTEN/PI3K ratio (r =0.452,P <0.05) .Conclusion SFI can attenuate myocardial IR injury via down-regulating the expression of PTEN,up-regulating the expression of PBK and activating PI3K/Akt signal pathway in diabetic rats.     

骨性关节炎标记物Ⅱ型胶原降解产物C2C研究进展

骨性关节炎(OA)是老年人群中最常见的关节疾病,许多研究者都在试图寻找用于临床评价OA的生物学标志物.本文将就OA研究中所使用的Ⅱ型胶原纤维降解产物C2C进行综述,为深入研究、临床早期诊断OA提供方便.     

参附注射液对糖尿病大鼠心肌缺血再灌注时PTEN和P13 K表达的影响

目的 探讨参附注射液(SFI)对糖尿病大鼠心肌缺血再灌注时第10染色体同源丢失性磷酸酶-张力蛋白酶基因(PTEN)和磷脂酰肌醇-3激酶(PI3K)表达的影响.方法 健康成年雄性SD大鼠,体重220-280 g,单次腹腔注射1%链脲佐菌素.柠檬酸盐缓冲液60 m~Ckg制备糖尿病模型,取糖尿病模型制备成功的大鼠30只,随机分为3组(n=10):假手术组(S组)、缺血再灌注组(IR组)和SH组.IR组和SFI组采用结扎冠状动脉左前降支30 min,再灌注120 min的方法建立心肌缺血再灌注模型,S组只穿线不结扎;SFI组开胸前以10ml·kg-1·h-1 的速率静脉输注SFI,开胸后以3 ml·kg-1·h-1的速率静脉输注至术毕,S组和IR组均静脉输注等容量乳酸钠林格氏液和羟乙基淀粉.于再灌注120 min时处死大鼠,取左心室心肌组织,计算心肌梗死面积.采用TUNEL法检测心肌细胞凋亡情况,计算细胞凋亡指数.采用免疫组织化学法测定心肌组织PTEN和PI3K的表达水平,并计算其比值(PTEN/PI3K).观察心肌组织病理学结果.细胞凋亡指数与PTEN/PI3K行直线相关分析.结果 与S组比较,IR组和SFI组心肌梗死面积增加,细胞凋亡指数升高,PTEN和PI3K的表达上调(P<0.05或0.01),SFI组PTEN/PI3K降低(P<0.05);与IR组比较,SFI组心肌梗死面积减小,细胞凋亡指数降低,FTEN表达下调,PI3K表达上调,PTEN/PI3K降低(P<0.05);SFI组心肌损伤程度比IR组减轻.细胞凋亡指数与PTEN/PI3K呈正相关(r=0.452,P<0.05).结论 SFI减轻糖尿病大鼠心肌缺血再灌注损伤的机制与下调心肌组织FTEN表达,上调PI3K表达,从而激活PI3K/Akt信号通路有关.     

参附注射液对糖尿病大鼠心肌缺血再灌注时PTEN和P13 K表达的影响

Objective To investigate the effect of Shenfu injectio (SFI) on the expression of phosphatase and tensin homolog deleted on chromosome 10 (PTEN) and phosphatidylinositol 3-kinase (PI3K) during myocardial ischemia-reperfusion (IR) in diabetic rats.Methods Thirty adult male diabetic SD rats weighing 220-280 g were used in this study. Diabetes mellitus was induced with intraperitoneal streptozotocin 60 mg/kg and confirmed by fasting blood glucose > 16.7 mmol/L. The animals were randomly divided into 3 groups ( n = 10 each): group I sham operation (group S); group II IR and group Ⅲ SFI. Myocardial IR was produced by occlusion of left anterior descending branch (LAD) of coronary artery for 30 min followed by 120 min reperfusion in group IR and SFI. LAD was exposed but not occluded in group S.SFI was infused iv at 10 ml·kg-1 ·h-1 before opening the thoracic cavity and at 3ml·kg-1·h-1 after opening the thoracic cavity in group SFI until the end of operation. Equal volume of Lactated Ringer's solution and hydroxyethyl starch was infused instead of SFI in group S and IR. The rats were killed and hearts removed at 120 min of reperfusion for microscopic examination and determination of cardiomyocyte apoptosis (by TUNEL)and expression of PTEN and PDK (by immunohistochemical method). PTEN/PI3K ratio, myocardial infarct size of left ventricle and apoptosis index were calculated.Correlation between apoptosis index and PTEN/PI3K ratio was analyzed. Results Myocardial infarct size and apoptosis index were significantly increased, while expression of PTEN and PI3K was up-regulated in group IR and SFI as compared with group S ( P < 0.05 or 0.01) . PTEN/PI3K ratio was significantly decreased in group SFI as compared with group S (P< 0.05). Myocardial infarct size and apoptosis index were significantly decreased, PTEN expression was down-regulated, PI3K expression was up-regulated and PTEN/PI3K ratio was significantly decreased in group SFI as compared with group IR( P < 0.05) . Myocardial pathological damage was attenuated in group SFI as compared with group IR. Apoptosis index was positively correlated to PTEN/PI3K ratio (r =0.452,P <0.05) .Conclusion SFI can attenuate myocardial IR injury via down-regulating the expression of PTEN,up-regulating the expression of PBK and activating PI3K/Akt signal pathway in diabetic rats.