Troponin T and Heart Type Fatty Acid Binding Protein (h-Fabp) as Biomarkers in Patients Presenting with Chest Pain     

Lakshmi Lavanya Reddy  Swarup A. V. Shah  Alpa J. Dherai  Chandrashekhar K. Ponde  Tester F. Ashavaid 《Indian journal of clinical biochemistry : IJCB》2016,31(1):87-92

Acute coronary syndrome (ACS) is a term for a range of clinical signs and symptoms suggestive of myocardial ischemia. It results in functional and structural changes and ultimately releasing protein from injured cardiomyocytes. These cardiac markers play a major role in diagnosis and prognosis of ACS. This study aims to assess the efficacy of heart type fatty acid binding protein (h-FABP) as a marker for ACS along with the routinely used hs-TropT. In our observational study, plasma h-FABP (cut-off 6.32 ng/ml) and routinely done hs-Trop T (cutoff 0.1 and 0.014 ng/ml) were estimated by immunometric laboratory assays in 88 patients with acute chest pain. Based on the clinical and laboratory test findings the patients were grouped into ACS (n = 41) and non-ACS (n = 47). The diagnostic sensitivity, specificity, NPV, PPV and ROC curve at 95 % CI were determined. Sensitivity of hs-TropT (0.1 ng/ml), hs-TropT (0.014 ng/ml) and h-FABP were 53, 86 and 78 % respectively and specificity for the same were 98, 73 and 70 % respectively. Sensitivity, specificity and NPV calculated for a cut-off combination of hs-TropT 0.014 ng/ml and h-FABP was 100, 51 and 100 % respectively. These results were substantiated by ROC analysis. Measurement of plasma h-FABP and hs-TropT together on admission appears to be more precise predictor of ACS rather than either hs-Trop T or h-FABP.  相似文献   

整合素在运动性心肌肥大中的信号转导作用     

彭峰林  邓树勋 《体育科学》2005,25(10):71-74

整合素是介导机械刺激的细胞表面粘附分子，对心肌肥大有介导作用。综述有关整舍素的分子生物学基础及其转导的信号途径，进一步探讨其在运动心肌肥大中的可能机制。  相似文献   

老年妇女从事杨式太极拳前后的某些心功能指标的变化   总被引：6，自引：0，他引：6  

李士英  王文杰  刘柏 《山东体育学院学报》1994,(3)

对２０名从事杨式太极拳练习１个月的老年妇女进行了心脏结构和功能等指标的测定，结果发现：杨式太极拳可提高老年妇女的心室厚度和收缩幅度，尤其是提高左室后壁厚度和收缩幅度，说明心室壁血波供应得到改善；可使受试者安静时的心率、血压均明显降低，每搏输出量和射血分数均明显升高，揭示老年人从事杨式太极拳练习可改善其心肌血液供应，提高心肌泵血功能。  相似文献   

Ischemia modified albumin: A novel marker for acute coronary syndrome     

R. Chawla  Navendu Goyal  Rajneesh Calton  Shweta Goyal 《Indian journal of clinical biochemistry : IJCB》2006,21(1):77-82

Early identification of patients with acute myocardial infarction is of prime importance due to the associated very high mortality. Only 22% of the patients presenting at emergency cardiology care with chest pain have coronary disease. A number of biochemical tests like CKMB and Troponin-T/I have been introduced for early detection of the coronary syndrome (ACS). Ischemia modified albumin (IMA) has been recently introduced as a marker of myocardial ischemia. We estimated serum IMA in four sequential samples from 25 patients admitted to ICCU. Twenty five healthy volunteers formed the control group from which the normal range was derived. IMA was significantly raised in ischemia patients than in controls as well as compared to the patients who did not have cardiac ischemia. IMA demonstrated good discrimination between the ischemic and the non-ischemic patients with an Odds Ratio of 16.9 (6.29–46.87) than CKMB which showed an Odds Ratio of 2.07 (1.18–6.08). Sensitivity and specificity of IMA for the detection of ACS was 78.0% and 82.7% compared to 58.0% and 60.0%, respectively for the CK-MB assay. The area under the ROC curve of IMA for ischemic v/s non-ischemic patients was 0.834. IMA appears to be developing into a new and very potent marker, of cardiac ischemia.  相似文献   

肌肉肥大与萎缩的基础科学研究进展——基于第65届美国运动医学会年会报告综述     

赵燕  尚画雨 《北京体育大学学报》2018,41(8):66-71+89

摘要：以介绍第65届美国运动医学会（ACSM）年会暨第9届运动是良医世界科学大会和肌肉肥大与萎缩的基础科学世界大会的主要研究热点为目的。以“肌肉肥大与萎缩”的基础科学世界大会的主报告和专题报告为基本思路,并通过PubMed等数据库检索相关文献,对大会中肌肉肥大与萎缩的专题报告内容、相关主题的最新研究成果等方面进行探讨。目前,关于肌肉肥大与萎缩的研究热点主要集中在废用和疾病状态下的肌萎缩、调控肌肉肥大的外在变量及内在分子机制、肌卫星细胞在骨骼肌肥大与萎缩过程中的作用、营养补充促进肌肉肥大及改善肌萎缩等方面。这些研究成果为更深入地探究运动促进肌肉肥大和改善其萎缩提供新的思路,同时为我国体育科学、运动医学、肌肉生物科学及运动康复研究提供有益借鉴。  相似文献   

外源性IGF-I对大鼠运动骨骼肌mTOR及下游信号的影响     

曾凡星  朱晗  赵华  欧阳芡 《北京体育大学学报》2011,34(4):47-50

目的:通过观察一周注射外源性IGF-I和跑台运动对mTOR及其下游信号的影响,以深入探讨IGF-I对运动骨骼肌蛋白合成信号的影响机理。方法:8周龄雄性SD鼠在适应性训练后分为四组:安静组(S)、IGF-I组(SI)、运动组(E)、运动+IGF-I组(EI),每组6只。运动方式为跑台运动(坡度为10%,跑速20 m/min,60min),每天一次,共7 d。外源性IGF-I为小腿后侧肌肉隆起处的皮下注射。用Western Blotting法检测腓肠肌MHC、mTOR(Ser2448)、p70S6K(Thr389)和4EBP1(Thr37/46)的磷酸化表达。结果:在一周后,外源性IGF-I显著促进骨骼肌湿重和MHC的表达。外源性IGF-I和运动均显著促进骨骼肌mTOR(Ser 2448)(P<0.01)、p70S6K(Thr 389)(P<0.01)和4EBP1(Thr 37/46)(P<0.01)的磷酸化表达。外源性IGF-I和运动因素在影响mTOR及其下游信号时存在协同促进效应。结论:1)一周外源性IGF-I注射明显促进骨骼肌蛋白合成,且明显强于运动的促合成效应。2)一周外源性IGF-I注射与运动均能明显促进运动骨骼肌mTOR及其下游信号的活性。  相似文献   

运动性心肌肥厚中PKC信号通路研究进展     

柳华  杨翼 《湖北体育科技》2011,30(6):676-680

心肌肥厚是心脏受到刺激后的一种代偿反应。心肌的生理性肥厚可提高心脏机能,但病理性肥厚则会引起心血管疾病心律失常发病和死亡,亦是运动员发生猝死的原因之一。明确运动性心肌肥厚的机制,可为保护运动员心脏提供理论依据。目前为止,形成心肌肥厚的信号通路包括PKC、蛋白激酶B（Akt）、钙调神经磷酸酶（CaM）、丝裂原活化蛋白激酶...  相似文献   

IGF-Ⅰ对大鼠运动骨骼肌mTOR及上游信号的影响     

曾凡星  朱晗  赵华 《西安体育学院学报》2011,28(3):331-337

目的通过观察1周注射外源性胰岛素样生长样子(IGF-Ⅰ)和跑台运动对mTOR及其上游信号的影响,以深入探讨IGF-Ⅰ对运动骨骼肌蛋白合成信号的影响机理。方法 8周龄雄性SD大鼠在适应性训练后分为4组:安静组(S)、IGF-Ⅰ组(SI)、运动组(E)、运动+IGF-Ⅰ组(EI),每组6只。运动方式为跑台运动(坡度为10%,跑速20m/min,60 min),每天1次,共7 d。外源性IGF-Ⅰ为小腿后侧肌肉隆起处的皮下注射。用Western Blotting法检测腓肠肌MHC、PI3K蛋白、Akt(Ser473)和mTOR(Ser2448)磷酸化表达。结果 1周后,外源性IGF-Ⅰ显著促进骨骼肌湿重和MHC的表达,骨骼肌PI3K蛋白和Akt(Ser473)、mTOR(Ser2448)的磷酸化表达显著增加。运动显著促进Akt(Ser473)和mTOR(Ser 2448)磷酸化的表达。结论 (1)1周外源性IGF-Ⅰ注射明显促进骨骼肌蛋白合成,且明显强于运动的促合成效应;(2)1周外源性IGF-Ⅰ注射明显促进运动骨骼肌mTOR及其上游信号的活性,运动与IGF-Ⅰ具有协同效应,共同促进骨骼肌肥大。  相似文献   

Evaluation of Anti-hypertrophic Potential of Enicostemma littorale Blume on Isoproterenol Induced Cardiac Hypertrophy     

V. A. Doss  Dharaniyambigai Kuberapandian 《Indian journal of clinical biochemistry : IJCB》2021,36(1):33

The main objective of this study is to evaluate the anti-hypertrophic potential of the aqueous extract of Enicostemma littorale (E. littorale) against isoproterenol induced cardiac hypertrophic rat models (male albino Wistar rats) through biochemical investigations. Aqueous extract of E. littorale known for various beneficial properties was administered (100 mg/kg, 12 days, oral) to isoproterenol (ISO) induced cardiac hypertrophic rats (low ISO—60 mg/kg, 12 days and high ISO—100 mg/kg, 12 days, subcutaneous) and were compared with group that was treated with the reference drug, Losartan (10 mg kg, administered for 12 days, oral). The anti-hypertrophic effect of E. littorale was evaluated by analysing the morphometric indices of the heart, ECG tracings, changes in blood biochemical parameters viz., serum glucose, serum total protein, serum albumin, lipid profile, cardiac specific enzymes (SGOT, SGPT and LDH) and histopathological examination of the heart tissue. The results fundamentally revealed that the plant extract efficiently ameliorated cardiac hypertrophy induced by ISO injected in experimental rats. The outcomes of biochemical investigations of this study highlighted the association between the hypertrophic β-adrenergic receptor signalling (β-AR) and the 5′ AMP-activated protein kinase (AMPK)—peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α) axis in the metabolism of cardiac fibrosis and hypertrophy. This β-AR/AMPK-PGC1α signalling stem can serve as a key target in ameliorating cardiac hypertrophy through focus on its principal regulators. To add, we also propose that the glycoside, swertiamarin present in this plant with the reported anti-fibrotic potential in liver can be further isolated and evaluated for its anti-hypertrophic potential to treat cardiac hypertrophy.  相似文献   

运动心脏重塑过程中的机械--生化偶联机制     

王丽君  徐岩  李国岩  毕永锋 《广州体育学院学报》2004,24(4):34-36

离体实验证明，心肌在不受神经体液因子的作用下，仅受牵张刺激也能导致心肌肥大反应。运动时心室舒张末期容积增加类似离体的牵张刺激，提示运动心脏重塑过程中，可能也存在某种机械一生化偶联机制在心肌蛋白质合成中发挥作用。  相似文献