共查询到19条相似文献,搜索用时 46 毫秒
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目的:评价在急性心肌梗死(AMI)的经皮冠脉介入治疗(PCI)过程中,应用远端保护装置Guard Wire Plus TM的安全性及有效性。方法:自2004年9月至2006年5月共72例急性心肌梗死接受急诊PCI治疗的患者随机分为远端保护组(GW组)和非远端保护组(NGW组),其中GW组38例,NGW组34例。比较两组间的基础临床状况、造影情况、ST段回落情况、术后TIMI分级、TIMI记帧、和心肌blush分级以及术后一周内及3个月后左室射血分数(LVEF)。结果:两组全部病例均成功地置入支架,GW组全部成功放置GuardWire PlusTM保护装置,GW组ST段回落□50%的百分比明显高于NGW组(68.4%vs41.2%,p<0.05)。术后TIMI分级两组没有明显差别,TIMI记帧(p=0.043)和心肌blush分级有明显差别(p=0.000)。GW组的左室射血分数(LVEF)明显高于NGW组。结论:急性心肌梗死急诊PCI中联合应用远端保护装置可以有效的预防远端血栓栓塞,缩小梗死面积,改善LVEF。 相似文献
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<正>在临床各类急性病症中,急性ST段抬高心肌梗死(ST segment elevation acute myocardial infarction,STEMI)是其中较为常见的一种。早期再灌注治疗是临床用于挽救STEMI患者生命、改善其预后及生存质量的有效手段。再灌注治疗主要包括经皮冠状动脉腔内成形术(PTCA)、溶栓治疗以及支架置入术。国内外大量临床研究表明,对于STEMI患者实施早期再灌注治疗可使病人死亡率大幅度降低,幸存者心功能也可得到显著改善[1]。本文就急性ST段抬高心肌 相似文献
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ST段抬高型心肌梗死(STEMI)主要由冠状动脉粥样硬化斑块引起血栓形成、冠状动脉闭塞、狭窄等造成心肌坏死、缺血等,是临床多发的一种危重病症。临床上主要实施再灌注治疗,静脉溶栓、介入是目前治疗STEMI的有效手段和再灌注治疗的重要方法。本文就STEMI冠状动脉溶栓治疗的研究进展作一综述,以期为临床治疗提供可靠参考依据。 相似文献
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目的:探讨血小板平均体积(MPV)与老年急性ST段抬高型心肌梗死(STEMI)患者住院期间并发心力衰竭(HF)的相关性。方法:收集我院收治的172例老年STEMI患者,按照住院期间是否发生HF分为HF组(n=55例)和非HF组(n=117例),以患者MPV四分位分四组,比较以上各组之间相关指标的差异,用Logistic回归方程分析MVP与患者HF发生的关系。结果:HF组与非HF组在吸烟、发病至入院时间、前壁梗死、血清B型脑钠肽(BNP)、肌钙蛋白I(c Tn I)、左室射血分数(LVEF)、MVP存在统计学差异(P0.05),HF组MVP水平高于非HF组(P0.05);MVP四分位分组之间的心功能指标LVEF和血清BNP、HF发生率存在统计学差异(P0.05),MVP的第四四分位组(Q4组)的HF发生率高于第一分位组及第二四分位组(Q1及Q2组);多因素Logistic回归方程分析显示高水平MPV是老年STEMI患者近期发生心力衰竭的独立危险因素(P0.05);MVP四分位分组中,从Q1组到Q4组发生HF的风险值(OR)依次增高,且Q3及Q4组的OR值具有统计学意义(P0.05)。结论:高水平MPV与老年STEMI患者住院期间HF发生密切相关,可能是其发生的独立危险因素,应当引起临床关注。 相似文献
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目的:研究心肌型脂肪酸结合蛋白(H-FABP)、肌钙蛋白I(cTnI)及和肽素(copeptin)在老年急性非ST段抬高型心肌梗死患者早期诊断中的应用价值。方法:选取2016年2月-2018年2月我院收治的老年急性非ST段抬高型心肌梗死患者60例为研究对象,记为观察组。另取同期于我院接受治疗的心绞痛患者50例记为对照组。分别比较患者H-FABP与cTnI阳性、阴性分布情况以及copeptin表达水平。绘制受试者工作特征曲线(ROC),分析H-FABP、cTnI、copeptin以及三项联合检测老年急性非ST段抬高型心肌梗死的早期诊断价值。结果:观察组患者H-FABP与cTnI阳性人数占比均高于对照组(P0.05)。观察组患者copeptin表达水平高于对照组(P0.05)。H-FABP、cTnI及copeptin等3个指标均具有一定的早期诊断价值,H-FABP+cTnI+copeptin联合检测的敏感度和特异度更高,分别为86.46%和87.15%。结论:老年急性非ST段抬高型心肌梗死患者H-FABP、cTnI、copeptin表达较高,联合检查上述三项指标水平可提高临床诊断价值。 相似文献
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目的:观察标准治疗基础上联合负荷剂量氯吡格雷治疗急性ST段抬高型心肌梗死(STEMI)的疗效及安全性。方法:106例12小时以内发病的ST段抬高型心肌梗死患者随机分为2组,2组均在入院后前3天给予阿司匹林300 mg.d~(-1),此后给予阿司匹林100 mg.d~(-1),A组不给予氯吡格雷治疗,B组入院即刻给予氯吡格雷300 mg,继之75 mg.d~(-1)治疗,平均随访30天。观察溶栓血管再通率、梗死后心绞痛发作、心力衰竭事件及死亡、再发心肌梗死或脑卒中的联合终点。结果:与A组相比,B组患者溶栓血管再通率显著提高、梗死后心绞痛发作明显减少;而在心力衰竭事件及死亡、再发心肌梗死、或脑卒中的联合终点的比较上差异无显著性意义。2组均无主要和次要出血事件发生,轻微出血发生率无统计学差异。结论:急性ST段抬高的急性心肌梗死患者,不论是否接受择期的冠脉介入治疗(PCI),在标准治疗的基础上早期加用氯吡格雷300mg负荷量,继之75 mg.d~(-1)口服,可显著提高溶栓成功率、降低梗死后心绞痛发作,且安全耐受性好。 相似文献
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目的:探讨主动脉内球囊反搏术(IABP)在不同类型急性心肌梗死患者中的有效性及对预后的影响.方法:入选2010年1月至2011年06月应用IABP治疗的急性心肌梗死患者62例,分为两组:A组为ST段抬高组,共34人;B组为非ST段抬高组,共28人.收集并观察两组的即刻病情改善率、术后30天、3月的左室射血分数(LVEF)及室壁运动积分指数(WMSI)、主要心血管事件(MACE)发生率.结果:B组IABP即刻有效性显著优于A组(10/25比8/30,P<0.05).术后30天,A、B两组LVEF均较术前增加,且组间具有统计学差异(35.5%±5.2%比40.6%±4.9%,P<0.05);在MACE事件上,A组仅在死亡例数一项明显高于B组(10/30比6/25,P<0.05).术后3月,A、B两组LVEF、WMSI有统计学差异(37.0%±6.9%比44.2%±5.2%;1.7±0.4比1.3±0.5,P均<0.05).A组MACE事件发生率明显高于B组,主要表现在非致死性心肌梗死和死亡两方面(3/30比1/25;15/30比8/25,P均<0.01).结论:IABP对于不同类型急性心肌梗死疗效存在差异,非ST段抬高心肌梗死疗效尤为显著. 相似文献
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目的:比较ST段抬高性和非ST段抬高性急性心肌梗死患者的冠状动脉病变特点。方法:选取100例在我院接受24h动态心电图和冠状动脉造影检查的急性心肌梗死患者,根据心电图结果分为观察组和对照组各50例。对照组为ST段抬高性心肌梗死(STEMI)患者,观察组为非ST段抬高性心肌梗死(NSTEMI)患者,比较两组患者冠状动脉病变的差异。结果:对照组LAD(左前降支)闭塞血管比例(52.00%)显著高于观察组(18.00%),差异具有统计学意义(P0.05)。对照组LCX(回旋支)闭塞血管比例(8.00%)显著低于观察组(50.00%),差异具有统计学意义(P0.05)。对照组RCA(右冠脉主干)闭塞血管比例(40.00%)和观察组(30.00%)比较,差异无统计学意义(P0.05)。对照组单支病变比例(46.00%)明显高于观察组(12.00%),对照组三支病变比例(20.00%)明显低于观察组(48.00%)比较,差异均具有统计学意义(P0.05)。对照组二支及正常血管比例与观察组比较,差异均无统计学意义(P0.05)。对照组罪犯血管狭窄程度在76%-90%、91%-99%及完全闭塞的比例与观察组比较差异均具有统计学意义(P0.05)。罪犯血管狭窄程度在50%及50%-75%时,两组差异无统计学意义(P0.05)。两组并发症发生情况比较,差异无统计学意义(P0.05)。结论:1NSTEMI罪犯血管闭塞以LCX多见,STEMI罪犯血管闭塞以LAD多见;2NSTEMI以三支血管病变较多见,STEMI以单支病变较多见。 相似文献
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目的:探讨老年ST段抬高型心肌梗死患者发生恶性室性心律失常的相关危险因素。方法:对150例老年ST段抬高型心肌梗死患者的临床资料进行回顾性分析,根据有无恶性室性心律失常(MVA)将其分为对照组(非MVA)和观察组(MVA),对两组的临床资料及指标进行比较,并进行Logistic回归分析。结果:性别、年龄、吸烟史、高血压史、糖尿病史、心绞痛史、血糖、糖化血红蛋白(Hb A1c)、血钾、肌酐(Cr)、BUN、甘油三脂(TG)、总胆固醇(TC)、高密度脂蛋白(HDL)、低密度脂蛋白(LDL)及病变类型与老年ST段抬高型心肌梗死患者发生MVA的发生无关,Killip分级、Cr和LDL与MVA的发生有关,且Killip分级和Cr水平是发生MVA的独立危险因素。结论:Killip分级和Cr水平是诱发老年ST段抬高型心肌梗死后MVA的独立危险因素。 相似文献
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本研究拟建立肌酸激酶同工酶MB(CK-MB)特异性单克隆抗体(m Ab)的研制方法,对抗CK-MB单抗进行评价分类及性质鉴定,并初步建立CK-MB定量检测试剂。以CK-MB抗原免疫BALB/c小鼠,利用常规单抗制备技术,使用间接和捕获ELISA差异筛选法筛选单抗。利用肌酸激酶同工酶(CK-MM/BB/MB)抗原对所制备单抗的抗原识别表位进行鉴定,另通过免疫印迹法及合成CK-MM、CK-BB差异性的线性表位肽鉴定对所制备的单抗进行评价分类。使用双抗体夹心ELISA方法筛选检测CK-MB抗原的配对m Ab,并初步建立CK-MB定量检测试剂。使用74例临床标本初步评价该试剂与罗氏试剂的检测一致性。最终,我们成功筛选到22株稳定分泌抗CK-MB抗体的杂交瘤细胞株,这些单抗可以分为线性、偏构象的CK-MB和CK-MM或者CK-BB交叉的单抗以及与CK-MB特异反应的偏构象型单抗,并使用偏构象型单抗研制出CK-MB定量检测试剂,该试剂与罗氏试剂相关系数r达到0.930 9。综上所述,本研究建立了研制CK-MB偏构象型特异性单抗的筛选方法,通过对所筛选的单抗进行分析鉴定并建立了CK-MB定量检测试剂,与罗氏试剂检测结果符合率高。 相似文献
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It is of interest to document the correlation of myeloperoxidase (MPO) and Troponin T (TnT) in young Indian patients with myocardial infarction using epidemiological data. A study with 220 (110 case and 110 control) participants with Acute Coronary Syndrome (both males and females) was completed. Patients were identified using a pre-designed PROFORMA at the OPD and IPD of the Medicine Department at the Index Medical College & Hospital, Malwanchal University and Moti Lal Nehru Medical College and Swaroop Rani Nehru Hospital in India. MPO and TnT were measured using the Sandwich ELISA (Sandwich Enzyme linked immunosorbent Assay) kit. TnT (pg/ml) (Mean ± SD) were high in the case group than control 134.7 ± 8.57 vs 96.6 ± 2.82; F = 145.9; t = 44.3; p < 0.01). Moreover, MPO was 3-fold high in case group than control (157±30.1 and 42.4±14.82, respectively). The differences was found statistically significant (p<0.001). This suggests a link between TnT and MPO among young Indian patients with myocardial infarction. 相似文献
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Summary Mitochondrial creatine kinase (CK) purified from canine myocardium showed a single protein band on SDS-PAGE and was free of MMCK. Its amino acid composition was different than MMCK or BBCK and did not react to antiserum to MMCK or BBCK. Using purified mitochondrial, MM and BBCK, the velocity of reaction (V) was estimated for creatine phosphate (CP), creatine (C), adenosine triphosphate (ATP) and adenosine diphosphate (ADP) over a wide range of concentrations including those at Vmax. The values for Km (mM/L) derived from Lineweaver-Burke plots are shown: The affinity of mitochondrial CK for C is much greater than MMCK which is compatible with the energy shuttle hypothesis, namely ATP is converted by mitochondrial CK to CP, and then diffuses to the myofibril for conversion to ATP for utilization. 相似文献
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Epand RF Tokarska-Schlattner M Schlattner U Wallimann T Epand RM 《Journal of molecular biology》2007,365(4):968-980
We show in this study that mitochondrial creatine kinase promotes segregation and clustering of cardiolipin in mixed membranes, a phenomenon that has been proposed to occur at contact sites in the mitochondria. This property of mitochondrial creatine kinase is dependent on the native octameric structure of the protein and does not occur after heat-denaturation or with the native dimeric form of the protein. Cardiolipin segregation was demonstrated by differential scanning calorimetry using membranes containing cardiolipin and either dipalmitoylphosphatidylethanolamine or 1-palmitoyl-2-oleoylphosphatidylethanolamine. Addition of the ubiquitous form of mitochondrial creatine kinase leads to the formation of a phosphatidylethanolamine-rich domain as a result of the protein binding preferentially to the cardiolipin. Such phase separation does not occur if cardiolipin is replaced with dioleoyl phosphatidylglycerol. Lipid phase separation is observed with other cardiolipin-binding proteins, including cytochrome c and, to a very small extent, with truncated Bid (t-Bid), as well as with the cationic polypeptide poly-L-lysine, but among these proteins the octameric form of mitochondrial creatine kinase is by far the most effective in causing segregation and clustering of cardiolipin. The proteins included in this study are found at mitochondrial contact sites where they are known to associate with cardiolipin. Domains in mitochondria enriched in cardiolipin play an important role in apoptosis and in energy flux processes. 相似文献
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目的:观察早期心肌缺血(可疑)与梗死心肌细胞内肌钙蛋白(CTnT)、肌红蛋白(Mb)的变化情况.方法:应用H.E染色和免疫组织化学技术分别对6例正常心肌、11例早期心肌缺血(可疑)及9例梗死的心肌细胞内肌钙蛋白、肌红蛋白进行观察.结果:H.E染色正常组心肌未见异常;早期(可疑)心肌缺血组未见明显心肌梗死病灶;心肌梗死组见心肌梗死病灶.CTnT和Mb的免疫组织化学染色和图像分析显示,CTnT和Mb在正常组心肌的表达量明显高于早期(可疑)心肌缺血组和心肌梗死组(p<0.05).结论:CTnT、Mb免疫组织化学染色可用于早期(可疑)心肌缺血和心肌梗死的诊断. 相似文献
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During this investigation the effects of heat acclimation and exercise on creatine kinase and creatine kinase BB isoenzyme responses in various tissues and serum of male Sprague-Dawley rats were ascertained. Forty rats were randomly divided into two groups of 20 rats each. One group was housed at 22+/-1 degrees C and the other at 33+/-1 degrees C. Each of the two groups were subdivided into two subgroups of ten rats each. One subgroup of each group was subjected to a programme of treadmill running of progressive intensity over a period of 6 weeks at the temperature at which it was housed while the other served as a resting control. At the end of the acclimation programme the rats were running at 23 m/min for 80 min. On the day of sacrifice all four subgroups were subjected to a discontinuous exercise protocol (10 min running alternated by a 2-min rest period; repeated three times) at 30+/-1 degrees C on a rodent treadmill at 23 m/min. The tissues investigated were kidney, heart and muscle. The rats were anaesthetized with pentobarbital sodium (6 mg/100 g body mass) injected intraperitoneally. The tissues were freeze-clamped and stored in liquid air until analysed. The body temperature of the four subgroups at the end of the experimental protocol were not significantly different. Acclimation at 33+/-1 degrees C resulted in significantly lower creatine kinase activity levels. Exercise at 30+/-1 degrees C also resulted in decreased creatine kinase activity levels in both acclimated groups. A similar trend was observed regarding creatine kinase BB isoenzyme activity levels, especially in kidney. 相似文献
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Taurocyamine kinase (TK) was previously reported to be restricted to certain marine annelids; however, the present study has proven otherwise. The lung fluke Paragonimuswestermani has a contiguous two-domain TK with a mass of 80 216 Da consisting of 713 amino acid residues sharing higher sequence identity with molluscan arginine kinase (AK). Both domains of P. westermani TK have significant activity for the substrate taurocyamine and exhibited synergism during substrate binding. Since TK plays a key role in energy metabolism and is not present in mammals, inhibitors against P. westermani TK could be effective novel chemotherapeutic agents and could be utilized for the development of specific diagnostic tools for the detection of paragonimiasis. 相似文献
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Lombricine kinase is an annelid enzyme that belongs to the phosphagen kinase family of which creatine kinase and arginine kinase are the typical representatives. The enzymes play important roles in the cellular energy metabolism of animals. Biochemical, physiological and molecular information with respect to lombricine kinase is limited compared to other phosphagen kinases. This study presents data on the cDNA sequences of lombricine kinase from two smaller oligochaetes, Enchytraeus sp. and Stylaria sp. The deduced amino acid sequences are analyzed and compared with other selected phosphagen kinases. The intron/exon structure of the lombricine kinase gene was determined for these two species as well as two additional oligochaetes, Lumbriculus variegatus and Tubifex tubifex, and compared with available data for annelid phosphagen kinases. The data indicate the existence of a variable organization of the proposed 8-intron/9-exon gene structure. The results provide further insights in the evolution and position of these enzymes within the phosphagen kinase family. 相似文献

