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1.
重组链激酶(r-SK)由工程菌提取液经SephacrylS-200柱纯化,比活性达105IU/mg,十二烷基硫酸钠-聚丙烯酰胺凝胶电泳(SDS-PAGE)显示分子量为78.0247×10-24kg的一条带。人新鲜血浆经Lysine-Sepharose4B亲和层析,SephadexG-25凝胶过滤制备纤溶酶原(plg),比活性达23.7IU/mg,活性回收率为13.6%,SDS-PAGE显示分子量为147.7489×10-24kg的一条带。对-茴香酸-对-脒基r-SK和plg的混合物经苯酯盐酸盐(APAN)修饰后制备茴香酰纤溶酶原链激酶激活剂复合物(APSAC),产物经L-lysineSepharose4B亲和层析,SDS-PAGE显示分子量为78.0247×10-24kg和147.7489×10-24kg两条带,其拟一级水解速率常数为1.26×10-4sec-1。体外溶栓实验证明其有溶栓活性。  相似文献   

2.
目的:了解血脂、Na+-K+-ATPase及全血粘弹性参数(弹性模量及动粘度)在兔动脉粥样硬化进程中的预示作用。方法:健康家兔80只随机分为实验组(AG)60只及对照组(CG)20只,各组又分为4个亚组,即AG1~AG4和CG1~CG4,AG给予胆固醇粉1gd-1只-1,在喂养的第2、4、8和12周分别观察AG1~CG1、AG2~CG2、AG3~CG3、AG4~CG4主动脉粥样硬化(AS)病变和上述指标的变化。结果:在兔AS阶段性进程中,血脂(Tch、TG)在AS早期明显增高,其后有所降低;红细胞膜Na+-K+-ATPase活性自AS早期起进行性降低,且在AS早、晚期与Tch有密切负相关关系(r=-0.67、-0.51,P<0.01、0.05);全血粘弹性参数中,在早期仅当角频率(ω)为0.190Hz时弹性模量呈单一性升高,而中、晚期弹性模量及动粘度普遍升高,二者之间有正相关关系(r=0.51~0.85,P<0.05~0.001)。结论:上述指标在AS进程中有一定的阶段性预示作用。  相似文献   

3.
一氧化氮在肝硬化腹水大鼠钠潴留中的作用研究   总被引:1,自引:0,他引:1  
为探讨血管活性物质一氧化氮(NO)在肝硬化钠潴留中的作用,采用放射性免疫法一胆管结扎(BDL)诱导的胆汁性肝硬化腹水组(CIR)和肝硬化腹水给药组(CIR-NAME)及假手术组(SO)大鼠血浆和肾组织匀浆中NO依赖性cGMP含量,用电极法测定上述三组大鼠24h尿钠排泄量。结果显示:肝硬化腹水大鼠血浆和肾组织匀浆中cGMP水平显著高于假手术组,24h尿钠排泄量则显著低于假手术组。而持续给予小剂量〔(  相似文献   

4.
目的:研究一氧化氮(NO) 及一氧化碳(CO) 对碱性成纤维细胞生长因子(basic fibroblast growth factor,bFGF) 促平滑肌细胞(vascularsmooth muscle cells, VSMC)增殖作用的影响及其机制。方法:以3HTdR参入法测定平滑肌细胞增殖程度,放射活性法测定VSMC内蛋白磷酸化程度、蛋白激酶C(protein kinase C,PKC) 及丝裂素活化蛋白激酶(mitogenactivated protein kinase, MAPK)活性。结果:孵育24 h 后,bFGF刺激的VSMC增殖较对照组增加1.1 倍(P< 0.01),细胞内蛋白磷酸化程度增加38.2% (P< 0.01),PKC 及MAPK 活性分别增加1.5 和2 .5倍( P< 0.01);CO 前体hemeLlysinate(HLLys) 及NO 前体LArginine( LArg) 对静止期VSMC 生长无显著影响,亦未引起细胞内蛋白磷酸化、PKC及MAPK 活性发生显著改变;5、10 、20 μmol·L-1 HLLys 使bFGF刺激的VSMC增殖分别减少43.4 % 、46.6% 和47 .6%  相似文献   

5.
目的:阐明雌二醇对内皮细胞一氧化氮(NO)生成及一氧化氮合酶(cNOS)基因表达的影响。方法:观察雌二醇作用于原代人脐静脉内皮细胞(HUVEC)一定时间(1~24h)后的NO产量,采用Greis反应测定代谢产物NO-2的量及Northern杂交技术分析雌二醇作用于HUVEC18hcNOSmRNA的表达。结果:100、30、10及1nmol·L-1的雌二醇作用下,HUVEC分别于1、4、12及18h起,NO-2产量有明显增高。0.1nmol·L-1雌二醇作用24h内,NO-2产量与对照组比较差异无统计学意义。Northern杂交结果表明:1~100nmol·L-1雌二醇可明显促进cNOSmRNA的表达;而0.1nmol·L-1雌二醇无此效应。结论:雌二醇可促进HUVECNO的生成及cNOS基因的表达,可能为雌激素保护作用的重要机制,雌二醇作用的阈浓度可能在0.1~1nmol·L-1之间  相似文献   

6.
目的:揭示锝(Tc)-99m标记的单克隆抗体在肿瘤定位中的作用。方法:通过SMMC-7721-CS细胞株诱导原发性肝癌实体瘤裸鼠模型,将Tc-99m标记抗AFP单克隆抗体(AntiAFP-McAb)和正常鼠免疫球蛋白(NMIgG)通过尾静脉注射荷瘤裸鼠,分别在15min、12h、24h作单光子发射计算机断层显像(SPECT)。结果:在注射标记抗体24h能得到清晰的肿瘤显像,对照组无肿瘤显像,其中靶与非靶放射性比率(T/NT)与对照组比较,t=3.104,P<0.05,有显著差异;肿瘤定位指数(LI-组织与血液放射性比率)单抗组为2.68±0.05,对照组为1.23±0.01,肿瘤组织摄取率为28.68%±4.00%。结论:Tc-99m标记抗AFP抗体具有良好的定位效果  相似文献   

7.
给兔灌胃(ig)kappa-硒化卡拉胶( -SeC)38mg·kg~-1和亚硒酸钠1mg·kg~-1(均相当于Se0.45mg·kg~-1),结果显示 -SeC组血Se水平的AUC_0-72h为12.89±3.13mg·L~-1·h,显著高于亚硒酸钠组的8.66±1.20mg·L~-01(P<0.05); -SeC和亚硒酸钠组的Cmax分别为0.556±0.086mg·L~-1和0.493±0.091Semg·L~-1(P>0.05),Tmax分别为4.65±1.12h和3.47±1.07h(P>0.05).ig后24及72h,心、肝、肾、肺及软骨中的Se含量, -SeC组显著高于亚硒酸钠组(P<0.05或0.01)。  相似文献   

8.
目的探讨非胰岛素依赖型糖尿病(NIDDM)患者红细胞膜Na+-K+-ATPase及Ca2+-AT-Pase活性改变的影响因素。方法测定77例NIDDM患者和50例正常人血糖、总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白胆固醇(HDLC)、脂质过氧化物(LPO)、谷胱甘肽(GSH)、糖化血红蛋白(HbAlc)、超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSHPX)、红细胞膜Na+-K+-AT-Pase和Ca2+-ATPase活性。t检验、直线相关分析和多元逐步回归分析。结果NIDDM组血糖、HbAlc、TC、TG、TC/HDLC、LPO显著高于对照组(P<0.01),HDLC、GSH、SOD、GSHPX、红细胞膜Na+-K+-ATPase和Ca2+-ATPase活性低于对照组(除GSH的P<0.05外,其他P<0.01);不同HbAlc、TC/HDLC、GSH、LPO、TC组的红细胞膜Na+-K+-ATPase活性有显著性差别。红细胞膜Na+-K+-ATPase活性=12.80+0.27(GSH)-0.12(LPO)-0.09(TC/HDLC),红细胞胞膜Ca2+-ATPase活性=108.20+1.  相似文献   

9.
林树新  高歌 《医学争鸣》1999,20(1):51-53
目的:研究缺氧对肺动脉平滑肌细胞(PASMC)增殖、DNA合成和细胞周期的作用,并观察亮氨酸脑啡肽(L-Enk)和阿片受体阻断剂纳洛酮(Nal)的影响.方法:离体培养兔PASMC,采用四唑盐比色试验(MTT),3H-TdR参入技术和流式细胞仪分析细胞周期等方法,观察PASMC增殖、DNA合成和细胞周期的变化.结果:PASMC缺氧培养12h,24h后,MTT的A值和3H-TdR参入量分别为(179±19.1)%,(185±20.3)%和(158±13.6)%,(167±17.4)%,比常氧对照组(100%)显著增加(P<0.01).缺氧培养24h后,在G2,M期的细胞比例显著升高,G0,G1期的细胞比例显著减少(P<0.01).L-Enk(1×10-4mol/L)可明显抑制缺氧促进PASMC增殖和DNA合成的作用(P<0.01),该抑制作用可被Nal阻断.结论:L-Enk可抑制缺氧时PASMC的增殖和DNA的合成作用,该抑制效应是通过阿片受体介导的.  相似文献   

10.
将在中国仓鼠卵巢细胞(CHO)中基因克隆表达的人生长激素(hGH)培养物经Octyl-SepharoseCL-4B疏水层析,SephadexG-100凝胶过滤层析,DEAE-CelluloseDE52离子交换层析,得到了较纯的hGH。通过SDS-聚丙烯酰胺凝胶电泳(SDS-PAGE),N-末端氨基酸分析及放免分析,证明基因工程hGH与天然hGH性质相符。  相似文献   

11.
Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P < 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (>0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P <0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P < 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.  相似文献   

12.
Objective: To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods: SD rats served as both donors and recipients. 4℃ sodium lactate Ringer's was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava (IVC) inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results: Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion: This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.  相似文献   

13.
目的:评价使用安心颗粒对急诊经皮冠状动脉介入术(PPCI)术后生活质量的影响.方法:将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组(术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次)和对照组(仅接受基础药物治疗).所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表(MIDAS)、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果:入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异(P>0.05);出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低(P<0.05);组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低(P<0.05).两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血(P>0.05).两组发生轻度血小板减少症的患者数比较无差异(P>0.05).结论:PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.  相似文献   

14.
Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P<0.01);the MAP decreased(P<0.01)and the HR increased drastically(P<0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.  相似文献   

15.
Objective:To investigate the gene expression of osteoprotegerin(OPG) and osteoclast differentiation factor(ODF) in the bone tissue of patients with hip fracture due to osteoporosis. Methods:OPGmRNA and ODFmRNA in the bone tissue in 50 cases of osteoporosis sufferers(over 50 years old) with hip fracture(Observer Group) and 30 cases of hip facture sufferers with no osteoporosis(Control group) were analyzed with the Semi-Quantitative RT-PCR method. Results:The mRNA expressed of ODF, OPG were both high in the patients with hip fracture. In the control group, the expression of OPG mRNA was observed, while the expression of ODF mRNA was very slight. Conclusion:Aged patients contained all signals including OPG, ODF that are essential for inducing osteoclastogenesis and promoting bone resorption.  相似文献   

16.
Objective:To investigate the clinical features, pathological characteristics and immunophenotype of solid-pseudopapillary tumor of the pancreas(SPTP). Methods:Nine surgically treated cases of SPTP were retrospectively reviewed. Hematoxylin and Eosin(HE) staining and immunohistochemical staining were used to analyze all cases, and the general clinical data was collected. Results:Six patients were asymptomatic except for a palpable mass. Two patients complained of vague-epigastric pain. One patient appeared jaundice. The tumor was encapsulated and solid tissues alternately with cystic tissues. Histologically, the histological structure of solid portion was pseudopapillary with a fibrovascular core. Tumor cells were uniform and medium-sized which were arranged in sheets ets or nests or pseudopapillary patterns. Immunohistochemical studies demonstrated that SPTP proved positive in vimentin(9/9 cases), AAT(9/9 cases), NSE(9/9 cases), ACT(7/9 cases), CK20(2/9 cases), CgA(1/9 cases), S-100(3/gcases), PR(4/gcases), Syn(3/9 cases) and CD56(5/9cases), negative in CEA and ER. Conclusion:SPTP is a tumor predominantly occurring in young women frequently without special symptoms. This tumor has various characteristical histological patterns with different immunophenotype.  相似文献   

17.
In recent years, the author of this essay has applied electro-acupuncture combined with the trigger point needle-embedding for treatment of primary trigeminal neuralgia in 31 cases, yielding satis- factory results as reported in the following.  相似文献   

18.
Objective: To explore the role of matrix metalloproteinase-1,2 (MMP-1, MMP-2) and tissue inhibitor of matrix metalloproteinases-1 (TIMP-1) in endometriosis. Methods: The eutopic and ectopic endometria from 40 subjects suffering from endometriosis and regular.endometria from 40 subjects (excluding endometriosis) were collected and examined by in situ hybridization technology and western blot assay. Results: Both expressions of MMP-1 and -2 were stronger in ectopic endometrium and eutopic endometrium than in normal endometrium. On the contrary, the expression of TIMP-1 in ectopic endometrium and eutopic endometrium was lower. The differences were significant (P 〈 0.01 ). Moreover, there was no relationship among the expressions of MMP-1, 2 and TIMP-1 in ectopic endometrium. Conclusion: The expressions of MMP-1, 2 and TIMP-1 lose balance and lack of periodic changes in ectopic endometrium , which explains the biological invasive behavior of endometriosis. It was suggested-that regulating the balance between the MMPs and TIMP-1 should be an ideal therapeutic target to endometriosis.  相似文献   

19.
Prof. SHI Da-zhuo, Ph.D., male, was born on March 20, 1960. Prof. SHI entered the Ph.D. program in 1990 at the China Academy of Chinese Medical Sciences under the supervision of Prof. CHEN Ke-ji, majoring in the treatment of cardiovascular diseases. After receiving his Ph.D. degree in 1993, Prof. SHI started working at the Cardiovascular Center in Xiyuan Hospital affiliated to China Academy of Chinese Medical sciences.  相似文献   

20.
《中国结合医学杂志》2008,14(2):159-159
The 6th National General Congress of Chinese Association of Integrative Medicine (CALM) was convened at 19-20, April 2008 in Beijing. Academician CHEN Zhu, the minister of Ministry of Health indicated at the congress that the integration of Chinese and Western medicine is very well in keeping with the situation of our country and the general rule of development in medical science; and as a good integration of Chinese medicine and Western medicine, it is mutually beneficial and advantageous to both of them. Seeing the creativity shown in integrative medical investigation in theoretic and methodological sides, we should and must persist in and develop it.  相似文献   

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