重新思考正常的甲状腺刺激激素 (TSH):高风险心血管患者中中风风险和代谢影响
Lia Cals1, Maria Zanella2, Simone Matsuda1
1Endocrinology, Diabetes, and Metabolism, Universidade Federal de Medicina de São Paulo, São Paulo, BRA.
甲状腺刺激激素 (TSH) 水平较低的甲状腺刺激激素患者与明显更高的中风风险有关. 高于正常的TSH与增加的甘油三和胰岛素抵抗标志物有关,突出显示TSH.
科学领域:
- 内分泌学 在内分泌学.
- 心血管医学 心血管医学
- 临床研究 临床研究
背景情况:
- 在正常范围内的甲状腺刺激激素 (TSH) 水平通常被认为对心血管结果临床上无关紧要.
- 然而,正常TSH的微妙变化可能会影响心血管风险,特别是在高风险人群中.
研究的目的:
- 调查正常范围的TSH变化与高血压和脂质不良症患者心血管结果之间的关联.
- 为了确定低于正常或高于正常的TSH水平是否与特定的心血管风险因素或事件相关.
主要方法:
- 一项对463名中年轻甲状腺腺患者 (高血压,脂质失调) 的横截面研究,TSH水平在0.5-5.2mIU/L之间.
- 患者被分为TSH三级 (下:0.5-1.3,中:>1.3-2.16,上:>2.16-5.2mIU/L) 的分层,并进行比较.
- 统计分析包括TSH ≤2.16 mIU/L和TSH>2.16 mIU/L组之间的相关性,回归和比较.
主要成果:
- 在高正常TSH组中观察到较高的甘油三和Tg-HDL比率 (p<0.05).
- TSH与BMI和Tg与HDL的比率正相关.
- 在低正常TSH范围内,中风的发病率显著更高 (6.1%对2.0%,p=0.047).
- 多变量回归表明,低于正常的TSH与中风风险增加五倍相关 (OR:5.08,p=0.031).
结论:
- 在正常TSH范围内,较低的TSH水平与高风险患者中风风险增加有关.
- 高于正常的TSH水平与不良的脂质样本和胰岛素抵抗的标志物相关.
- 这些发现强调了评估TSH水平的临床相关性,即使在评估心血管风险的正常范围内.
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