在基于α2b-AR基因的血管压缩器类型神经介导昏迷中,腺酸环酶活性与腺酸环酶活性相关
Tomoyoshi Komiyama1, Kengo Ayabe2,3, Kunzo Orita4
1Department of Clinical Pharmacology, Tokai University School of Medicine, Isehara, Kanagawa, Japan.
腺酸环酶 (AC) 活性的遗传变异可能会影响神经介导性 (NMS). Glu12/12同型表现出更高的AC活性,可能防止昏迷,而Glu9/12异型具有更高的风险.
科学领域:
- 心脏病学 心脏病学
- 遗传学 是一个遗传学.
- 神经科学是一个神经科学.
背景情况:
- 神经介导性 (NMS) 的原因尚不清楚,但可能涉及Gi-α信号转导和腺酸环酶 (AC) 活性.
- 之前的研究将信号转导率与AC活动联系起来,这表明NMS在病变发生过程中的潜在作用.
研究的目的:
- 调查谷氨酸 (Glu) 在α2B-AR基因 (Glu12和Glu9位) 和NMS中的重复多态性之间的关联.
- 评估与这些遗传变异相关的头向上倾斜 (HUT) 测试期间的AC活动水平和血压反应.
主要方法:
- 对50名血管抑制剂型 (VT) -NMS患者和20名健康志愿者的分析.
- 在HUT测试中测量AC活动和血压.
- 对α2B-AR基因 (Glu12和Glu9) 的谷氨酸重复多态分析.
主要成果:
- 具有Glu12/12同型的患者在HUT测试期间的AC活性明显高于对照组.
- Glu9/12异型显示出不同的AC活动模式,并在长时间站立后出现昏的风险更高.
- 这两种基因型都表现出显著的血压波动,Glu12/12在某些点显示出更高的心脏负荷.
结论:
- 在Glu12/12同型患者中,AC活性升高可能有助于调节血压和预防昏迷.
- 在AC活动的遗传变异影响了NMS在站立时的发病频率.
- α2B-AR基因多态性与NMS和血液动力学反应有关.
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