SYBR Green荧光定量PCR检测外源ATP7B对于内源CP基因转录的影响

[目的]应用SYBR Green荧光定量PCR检测在正常BRL细胞中短暂转染人ATP7B cDNA后CP基因的转录情况.[方法]分为空质粒组(转染空质粒Kbpala/Alb)和处理组(转染野生型Kbpala/Alb-ATP7B),分别于转染后0、4、8、12、24、48、72、168 h提取mRNA,逆转录后行SYBR Green荧光PCR检测人ATP7B cDNA及大鼠CP基因的转录情况.SAS11.0统计软件进行数据处理和分析.[结果]人ATP7B cDNA在短暂转染后约48h转录达高峰,可持续至转染后7 d以上;经方差分析,空质粒组转染后各时间点CP基因的转录水平与t=0 h相比较P＞0.05;处理组亦是.[结论]外源ATP7B cDNA的转染及表达对于内源性CP基因的转录无影响.     

行气活血饮治疗慢性乙肝肝纤维化肝郁脾虚证34例

目的:观察利气活血类中药配伍组方对慢性乙肝纤维化肝郁脾虚证的影响。方法:65例患者随机分为2组,治疗组34例,用行气活血饮(桃仁、红花、赤芍、五灵脂、鳖甲、川楝子等)治疗;对照组用复方丹参片口服。结果:两组治疗后血清透明质酸酶、IV型胶原、血清铁、血清铁蛋白的水平较治疗前下降,两组相比具有显著性差异。治疗组总有效率为85.3%,显著高于对照组58.1%(P<0.05)。结论:行气活血饮有一定的抗肝纤维化作用,对血清铁、血清铁蛋白有显著抑制作用。     

壮医药线点灸对大鼠肝纤维化组织学及血清学的影响

目的观察壮医药线点灸抑制肝纤维化作用。方法采用CCL4诱导大鼠肝纤维化模型,Wistar大鼠随机分正常对照组、模型组、药线组各10只,应用免疫组化及放射免疫等方法研究壮医药线对肝纤维化大鼠肝组织纤维化程度,肝星状细胞(HSC)凋亡率,超氧化物歧化酶(SOD)、丙二醛(MDA)、转化生长因子!1(TGF-"1)含量以及对血清中谷丙转氨酶(ALT)、透明质酸(HA)、III型前胶原(PCIII)、层粘蛋白(LN)含量的影响。结果与模型组相比,药线组能显著改善大鼠肝组织纤维化程度,促进活化HSC凋亡,提高SOD含量,降低MDA、TGF-#1的含量及血清中ALT、HA、PCIII、LN的水平(P<0.01)。结论壮医药线点灸具有一定的抑制肝纤维化作用。     

Role of angiotensin Ⅱ and JAK2 signal pathway in transdifferentation of renal tubular cells in mice after acute ischemic followed by reperfusion

Objective To investigate the effect of angiotensin (Ang) Ⅱ and its Janns-activated kinase-2 (JAK2) signal pathway in transdifferentiation of renal tubular cells under the challenge of acute ischemic reperfusion injury.Methods Models of acute ischemic reperfusion injury were established and the level of local Ang Ⅱ ,a key element of renin-angiotensin system (RAS),in kidney was measured using radioimmunity technique.The expression of α-smooth muscle actin (α-SMA),a phenotype of mesenchymal cells,was detected by RT-PCR and inununohistochemistry methods.Renal tubule cells ( NRK-52E) were cultured with various concentration of Ang Ⅱ ,followed by blocking of PD123319,Ang U receptor 2 antagonist,and AG490,an inhibitor of JAK2 signal pathway.Results Ang 0 of kidney tissue increased immediately after acute ischemic-reperfusion injury,in time dependent fashion.Expression of α-SMA in renal tubule cells was found at 48 hours after ischemic-reperfusion injury and in NRK-52E cells treated by high concentration of Ang Ⅱ and was dose and time dependent.The peak of α-SMA expression was seen after 30 minute treatment at the dose of 10-9'mol/L,which was interrupted by both of PD123319 and AG490.Conclusions Transdifferentiarion of renal tubular epithelial cells occurs under acute ischemic- reperfusion injury.Local renin-angiotensin system may play a role in the transdifferentiation of TEC through AT2 receptor and its JAK2 signal pathway.     

Role of angiotensin Ⅱ and JAK2 signal pathway in transdifferentation of renal tubular cells in mice after acute ischemic followed by reperfusion

Objective To investigate the effect of angiotensin (Ang) Ⅱ and its Janns-activated kinase-2 (JAK2) signal pathway in transdifferentiation of renal tubular cells under the challenge of acute ischemic reperfusion injury.Methods Models of acute ischemic reperfusion injury were established and the level of local Ang Ⅱ ,a key element of renin-angiotensin system (RAS),in kidney was measured using radioimmunity technique.The expression of α-smooth muscle actin (α-SMA),a phenotype of mesenchymal cells,was detected by RT-PCR and inununohistochemistry methods.Renal tubule cells ( NRK-52E) were cultured with various concentration of Ang Ⅱ ,followed by blocking of PD123319,Ang U receptor 2 antagonist,and AG490,an inhibitor of JAK2 signal pathway.Results Ang 0 of kidney tissue increased immediately after acute ischemic-reperfusion injury,in time dependent fashion.Expression of α-SMA in renal tubule cells was found at 48 hours after ischemic-reperfusion injury and in NRK-52E cells treated by high concentration of Ang Ⅱ and was dose and time dependent.The peak of α-SMA expression was seen after 30 minute treatment at the dose of 10-9'mol/L,which was interrupted by both of PD123319 and AG490.Conclusions Transdifferentiarion of renal tubular epithelial cells occurs under acute ischemic- reperfusion injury.Local renin-angiotensin system may play a role in the transdifferentiation of TEC through AT2 receptor and its JAK2 signal pathway.     

解剖学目标教学探讨

教学过程包括“教”与“学”两个方面 ,由教师和学生的共同活动构成。传统的教学思想把教师放在主体地位 ,而把学生放在被动接受知识的客体地位 ,过份偏重知识的传授 ,而忽视了能力的培养。目标教学法较好地处理了“教”与“学”的关系 ,调动了教师与学生双方的主动性和积极性     

血浆异钩藤碱浓度对兔心率及希氏束电图的影响

目的 观察血浆异钩藤碱浓度对兔心率及希氏束电图的影响。方法 心房起博及希氏束电图方法。结果 血浆异钩藤碱浓度在0．73－3．68mg/L范围内呈剂量依赖性减慢心率、延长窦房结传导时间、窦房结恢复时间、心房－希氏束间期、希氏束－心室间期、以及心电图的P－R间期,其中对心率和房室传导抑制明显。结论 异钩藤碱用于对抗扩血管药引起的加快的心率的副作用时,血药浓度控制在1－2mg/L为宜。     

采用高效液相色谱法测定阿莫西林胶囊的含量

阿莫西林为广谱半合成青霉素,属β-内酰胺类抗生素.其抗菌机理是通过干扰细菌细胞壁的合成,并触发细菌自身的自溶酶活性,引起细菌细胞膜的损伤而杀灭细菌.它具有耐酸的特点,口服吸收迅速,血清药浓度高,生物利用度大于同类药物中的氨苄青霉素一倍,疗效确切,在临床上广受医生和患者的厚爱.在国内有众多的厂家生产不同剂型的阿莫西林,其中尤以胶囊见多.阿莫西林胶囊的含量测定方法,中国药典(1995)中规定为分光光度法.     

温通经络推拿法治疗肩周炎

肩周炎是"肩关节周围炎"的简称,属于祖国医学"痹症"、"漏肩风"范畴,本病多发生于50岁左右的中年人,故称"五十肩".多数病人由于长期疲劳或汗后当风或劳损致正气卫外不固,腠理不密,风寒湿之邪乘虚而流注于肩关节,使肩部经脉气血凝滞,以及闪挫拉伤肩部关节周围软组织,致肩部经脉气血瘀滞等原因所致.本人在近年来的临床工作中,根据"痛则不通,通则不痛"的原则,摸索出一套"温通经络、行气活血"的推拿治疗手法,治疗本病89例,现总结如下.     

八宝丹体外抑制淋巴管生成的作用机制研究

目的:探讨八宝丹(babao dan, BBD)体外抑制淋巴管生成的作用机制。方法:将人淋巴内皮细胞(human lymphatic endothelial cells, HLECs)分为不同浓度的BBD组,即0 g·L^-1 BBD组、0.25 g·L^-1 BBD组、0.5 g·L^-1 BBD组及0.75 g·L^-1 BBD组。MTT法检测细胞增殖情况;Hoechs33258染色实验观察细胞凋亡情况;细胞划痕实验考察细胞损伤修复能力;Transwell实验考察细胞的迁移能力;管腔形成实验分析细胞淋巴管生成能力;Western Blot检测血管内皮生长因子-C(vascular endothelial growth factor-C,VEGF-C)、血管内皮生长因子受体-3(vascular endothelial growth factor receptor-3,VEGFR-3)、基质金属蛋白酶-2(matrix metalloproteinase-2,MMP-2)和MMP-9蛋白表达水平。结果:B...