骨肌肉疾病:非心脏源的心脏Troponin
在PubMed上查看摘要
概括
此摘要是机器生成的。患有骨肌疾病 (SMD) 的患者心脏素T (cTnT) 度经常升高,但心脏素I (cTnI) 度没有升高. 这种cTnT的升高可能是由于骨肌肉的再表达,而不是心脏事件.
科学领域
- 心脏病学
- 生物化学
- 遗传学
背景情况
- 心脏素T (cTnT) 和I (cTnI) 是诊断急性心肌梗塞的关键生物标志物.
- 之前的研究表明罕见的骨肌病是cTnT的潜在非心脏来源.
- 这项研究旨在验证cTnT在骨肌疾病患者中的心脏特异性.
研究的目的
- 在患有各种骨肌疾病的患者中评估cTnT测试的可靠性和心脏特异性.
- 与对照组对SMD患者的cTnT和cTnI水平进行比较.
- 调查骨肌肉中潜在的cTnT升高的遗传基础.
主要方法
- 在2个国家的4个医院招募211名肌肉病患者.
- 对心脏病进行分析,并将其分为心脏病类别.
- 使用多种测定方法测量高灵敏度cTnT (hs-cTnT) 和hs-cTnI.
- 与没有SMD的3508对照对象进行比较.
- 在骨肌肉活检中分析TNNT/I基因表达.
主要成果
- 在55%的SMD患者中观察到hs- cTnT度升高,明显高于对照组 (13%).
- 在SMD患者和对照患者中,hs- cTnI度基本相似.
- 骨肌肉活检显示TNNT2 (编码cTnT) 在SMD患者中升高了8倍,与疾病活动和循环cTnT水平相关.
- 没有发现TNNI3 (编码为cTnI) 的显著上调.
结论
- 患有慢性肌肉疾病的患者中,cTnT的升高很常见,通常不表明心脏病.
- 在SMD患者中,cTnI水平没有出现类似的升高.
- 这些发现表明cTnT在骨肌肉中的再表达有助于SMD的循环水平升高.
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