首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 140 毫秒
1.
目的:对国内研究的注射用基因重组人尿激酶型纤溶酶原激活剂(pro-urokinase,u-PA)进行Ⅰ期临床试验,以评价其用于中国健康成人受试者的安全性和耐受性。方法:试验日期;健康受试者23例(男11例,女12例),随机分为5,20,35mg和50mg四个剂量组。静脉给药:其中1/4剂量在1min内静脉推注,其余3/4剂量在60min内静脉滴注完毕,给药前和给药后2,24h取外周血测定血液生化指标、凝血和纤溶指标,并随时观察受试者的全身状态和可能的药物不良反应。结果:全部受试者用药前后的血压、心率/律、呼吸等重要生命体征未见异常变化;血、尿常规、肝肾功能,电解质、空腹血糖等亦未见明显变化。与溶栓有关的血液学指标(活化的部分凝血活酶时间,凝血酶原时间,凝血酶原活动度,纤维蛋白原,α2-抗纤溶酶和纤维蛋白降解产物),在部分受试者有改变,但变化均在正常范围内、且与剂量无明显相关,无明确临床意义。全部受试者注射药物的局部皮肤,无刺激性炎症和皮下激血、出血等变化。结论:中国健康成人受试者对于上述剂量的基因重组人尿型纤溶酶原激活剂的安全性及耐受性良好。  相似文献   

2.
目的 评价健康志愿者对国产重组葡激酶(r-Sak)的耐受性。方法 将15名健康志愿者分5组,分别给予不同剂量(2.5、5、10、15、20mg)的r-Sak,观察r-Sak对凝血及纤溶系统指标的影响及其副反应。结果 使用r-Sak后,全部受试者的出血时间(BT)、凝血时间(CT)、凝血酶原时间(CT)、凝血酶原时间(PT)、活化部分凝血活酶时间(APTT),α2-抗纤溶酶(α2-AP)活性,纤维蛋白原(Fg)、纤溶酶原(Pg)、D-二聚体(D-D)及纤维蛋白(原)降解产物(FDP)等指标均无明显影响,用药前后血压、心率、呼吸、体温以及实验室检查(血、尿常规及生化)均无异常变化。试验中有3例发生了静脉穿刺点渗血或牙龋出血,均于30min内自行停止。结论:国产r-Sak具有良好的耐受性和安全性,但仍需密切观察出血等并发症并做好处理准备。  相似文献   

3.
目的 :观察重组人组织型纤溶酶原激活剂缺失变体 (reteplase ,Ret)对家兔纤溶和凝血系统活性的影响。方法 :采用常规方法测定家兔血液纤溶和凝血系统相关参数指标。结果 :Ret(3.75、7.5 0、15 .0MIU·kg-1)可明显降低纤溶酶原含量 ,使血浆纤维蛋白降解产物转呈阳性反应 ,缩短优球蛋白溶解时间 ,同时延长血浆凝血酶时间 ,凝血酶原时间及活化部分凝血活酶时间。结论 :Ret可促进血液纤溶系统活性和抑制凝血系统活性  相似文献   

4.
蚯蚓提取液纤溶及抗凝作用的实验研究   总被引:7,自引:2,他引:5  
通过纤维蛋白平板法和纤溶酶原激活剂活力测定试剂盒测定,证实蚯蚓提取液具有较强的纤溶活性和较高的纤溶酶原激活剂活力。动物实验结果显示,给SD大鼠静往蚯蚓提取液,能迅速提高大鼠血浆总纤溶酶原激活剂活力;口服给药也能明显减轻13%高分子葡聚糖溶液诱导大鼠实验性弥漫性血管内凝血的严重程度。  相似文献   

5.
目的:研究重组纳豆激酶(recombinant nattokinase,r-NK)大剂量重复给药对Beagle犬凝血和纤溶系统的影响。方法:用血细胞计数仪测定血小板相关参数;用血凝仪采取凝固法依次测定纤维蛋白原(Fib)含量、活化部分凝血酶时间(APTT)、凝血酶原时间(PT)、凝血酶时间(TT);ELISA法分别测定纤溶酶原(PLG)、纤溶酶原激活因子(t-PA)活性。结果:大剂量(2.24×10~5 u·kg~(-1))重复静脉注射r-NK可导致凝血障碍,引起多发性、弥漫性出血,最终导致动物死亡;给药后2周Beagle犬血小板计数均下降,PT明显延长,Fib含量均明显降低,PLG活性升高。结论: r-NK大剂量重复给药可破坏机体的凝血/纤溶系统平衡,导致Beagle犬凝血功能降低,纤溶系统功能异常增强。  相似文献   

6.
浅谈溶栓药的特点及应用   总被引:9,自引:0,他引:9  
在1959年已经用链激酶(SK)治疗心肌梗死,在80年代前可供使用的溶栓药除SK外还有尿激酶(UK),80年代以来,先后有基因重组组织型纤溶酶原激活剂(rt-PA)及其突变体、TNKt-PA前尿激酶(Pro-UK)和葡激酶(SAK)。至今所有溶栓药的基本药理都是将纤溶酶原转变成纤溶酶,纤溶酶可裂解纤维蛋白原,纤维蛋白(血栓的重要成分),凝血因  相似文献   

7.
链霉菌产生的新型纤溶酶的纤溶性质和溶栓作用   总被引:13,自引:0,他引:13  
王敏  王骏  邵明远  王敏  王以光 《药学学报》1998,33(7):481-485
目的旨在进一步确证纤溶活性的蛋白酶SW-1的溶栓作用和性质。用体外加热平板法、试管凝块法和在体内对大鼠静脉血栓溶解及对纤溶因子的作用等实验,发现SW-1在体外可直接降解纤维蛋白,而无激活纤溶酶原的作用。在体内,SW-1对大鼠静脉血栓有显著的溶解效果,与同剂量尿激酶的溶栓作用相当。给药(iv)30min后,SW-1引起大鼠血浆中纤溶酶、纤溶酶原水平提高,纤维蛋白原水平下降,而对组织型纤溶酶原激活剂(t-PA)、α2-纤溶酶抑制剂无显著影响。提示SW-1是一种具有纤溶活性的蛋白酶,而不是纤溶原激活剂。  相似文献   

8.
《中国医药科学》2019,(18):212-214
目的探究急性脑梗死患者凝血纤溶功能变化及意义。方法选取我院2017年12月~2018年12月收治的急性脑梗死患者100例,作为观察组,同期选取100例健康体检者,作为对照组。对两组患者的纤溶酶原活性、D-二聚体和纤维蛋白原进行检测。观察比较两组患者的凝血纤溶功能相关指标情况,以及轻度急性脑梗死和重度急性脑梗死患者的凝血纤溶功能相关指标。结果观察组患者的纤溶酶原活性(PLG)明显低于对照组,D-二聚体和纤维蛋白原明显高于对照组,差异有统计学意义(P 0.05)。病情严重的急性脑梗死患者,纤溶酶原活性明显低于病情轻度的患者,并且D-二聚体和纤维蛋白原明显高于病情轻度的患者,差异有统计学意义(P 0.05)。结论急性脑梗死患者凝血纤溶功能有明显的变化,并且各项指标的变化和病情的轻重程度有关,病情越严重,指标变化越明显。  相似文献   

9.
李家增 《天坛药讯》2004,16(3):32-33
在1959年已经用链激酶(SK)治疗心肌梗死,在80年代前可供使用的溶栓药除SK外还有尿激酶(UK),80年代以来,先后有基因重组组织型纤溶酶原激活剂(rt-PA)及其突变体、TNKt-PA前尿激酶(Pro-UK)和葡激酶(SAK)。至今所有溶栓药的基本药理都是将纤溶酶原转变纤溶酶,纤溶酶可裂解纤维蛋白原,纤维蛋白(血栓的重要成分),凝血因子  相似文献   

10.
脑梗死的凝血纤溶状态和蚓激酶的作用   总被引:25,自引:1,他引:24  
脑梗死时病人的血液处于高凝、低纤溶、高粘附状态。蚓激酶为蚯蚓提取物,在离体及整体状态下可溶解血栓,它可直接溶解纤维蛋白,并具有纤溶酶原激活剂的作用,脑梗死病人应用后可促进纤溶,改善凝血及血液流变学指标  相似文献   

11.
12.
Oestrogen and the cardiovascular system: the good, the bad and the puzzling   总被引:3,自引:0,他引:3  
The concept that oestrogen replacement therapy is cardioprotective has been challenged recently by the negative results of randomized clinical trials in coronary heart disease. These data have come at a time of rapid advances in our understanding of the cellular mechanisms of oestrogen. In particular, the cloning of the classical oestrogen receptor (ERalpha), the identification of a novel ER isoform (ERbeta), the availability of specific ERalpha and ERbeta knockout mice models, and the elucidation of receptor functions and signalling pathways linked to non-genomic actions of oestrogen are helping to unravel this complex biology. In this article, these advances will be discussed with particular emphasis on the regulation of nitric oxide synthesis by oestrogen. Furthermore, the puzzling issues that have emerged and the potential for development of novel and specific therapeutic approaches will be highlighted.  相似文献   

13.
The history of ketamine and phencyclidine from their development as potential clinical anaesthetics through drugs of abuse and animal models of schizophrenia to potential rapidly acting antidepressants is reviewed. The discovery in 1983 of the NMDA receptor antagonist property of ketamine and phencyclidine was a key step to understanding their pharmacology, including their psychotomimetic effects in man. This review describes the historical context and the course of that discovery and its expansion into other hallucinatory drugs. The relevance of these findings to modern hypotheses of schizophrenia and the implications for drug discovery are reviewed. The findings of the rapidly acting antidepressant effects of ketamine in man are discussed in relation to other glutamatergic mechanisms.Tables of Links
TARGETS
GPCRsaLigand-gated ion channelsb
κ receptorAMPA receptors
μ receptorGluN2A
ACh receptors (muscarinic)GluN2B
Cannabinoid receptorsGluN2C
D2 receptorGluN2D
Metabotrophic glutamate receptorsKainate receptors
EnzymesdNMDA receptors
CholinesterasesNicotinic ACh receptors
GAD-67
GSK-3Ion channelc
mTORHCN1
PKB (Akt)
Open in a separate window
LIGANDS
5-HTDopamineMorphine
AChEthylketocyclazocineNaloxone
AMPAHA-966NMDA
AmphetamineIfenprodilNoradrenaline
BicucullineKainatePentazocine
ChlorpromazineKetamine (CI-581)Phencyclidine
CyclazocineLevorphanolPregnenolone
D-AP5LSDQuisqualate
DextromethorphanMemantineU50488H
Dizocilpine (MK-801)
Open in a separate windowThese Tables list key protein targets and ligands in this article which are hyperlinked to corresponding entries in http://www.guidetopharmacology.org, the common portal for data from the IUPHAR/BPS Guide to PHARMACOLOGY (Pawson et al., 2014) and are permanently archived in the Concise Guide to PHARMACOLOGY 2013/14a,b,c,dAlexander et al., 2013a,b,c,d,,,).  相似文献   

14.
医院以及医院药学的定位和服务方式转变   总被引:3,自引:0,他引:3  
本文以新一轮医药卫生体制改革的内容为切入点,分析我国现有医院与医院药学的现状,并与国外医疗体系做对比;提出了公立医院的定位问题及如何发挥医院药学在医院中的作用,转变服务方式,加强药师队伍建设等问题。  相似文献   

15.
16.
17.
Hydrogen sulfide is rapidly gaining ground as a physiological mediator of inflammation, but there is no clear consensus as to its precise role in inflammatory signaling. This article discusses the disparate anti-inflammatory ('the good') and proinflammatory ('the bad') effects of endogenous and pharmacological H(2)S in disparate animal model and cell culture systems. We also discuss 'the ugly', such as problems of using wholly specific inhibitors of enzymatic H(2)S synthesis, and the use of pharmacological donor compounds, which release H(2)S too quickly to be physiologically representative of endogenous H(2)S synthesis. Furthermore, recently developed slow-release H(2)S donors, which offer a more physiological approach to understanding the complex role of H(2)S in acute and chronic inflammation ('the promising') are discussed.  相似文献   

18.
19.
Pharmaceutical research organizations can benefit from outsourcing discovery activities that are not core competencies of the organization. The core competencies for a discovery operation are the expertise and systems that give the organization an advantage over its competition. Successful outsourcing ventures result in cost reduction, increased operation efficiency and optimization of resource allocation. While there are pitfalls to outsourcing, including poor partner selection and inadequate implementation, outsourcing can be a powerful tool for enhancing drug discovery operations.  相似文献   

20.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号