在雄性UCD型2型糖尿病大鼠中,自发性巴罗反射敏感性减弱:代谢和自主功能障碍之间的联系
Milena Samora1, Yu Huo1, Richard K McCuller1
1Department of Kinesiology and Health Education, The University of Texas at Austin, Austin, TX, United States.
Autonomic neuroscience : basic & clinical
|September 1, 2023
概括
在2型糖尿病 (T2DM) 鼠中,肥胖和代谢问题损害了动脉巴罗反射灵敏度 (BRS). 内脏脂肪和脂肪素水平与减少的BRS相关,这表明T2DM中代谢和自主功能障碍之间存在联系.
科学领域:
- 心血管生理学心血管生理学
- 代谢综合征是代谢综合征的一种.
- 自主神经系统功能 自主神经系统功能
背景情况:
- 患有2型糖尿病 (T2DM) 的患者表现出动脉巴罗反射功能受损,可能与肥胖有关.
- 肥胖和相关的代谢障碍对T2DM中巴罗反射功能障碍的具体影响尚不清楚.
研究的目的:
- 在T2DM的老鼠模型中,研究内脏脂肪和皮蛋白对巴罗反射功能障碍的影响.
- 探索T2DM中与肥胖相关的代谢因素和自主功能障碍之间的关系.
主要方法:
- 使用了成年雄性UCD-T2DM大鼠和年龄匹配的对照,对前糖尿病,糖尿病发病以及发病后4周和12周的组进行了评估.
- 使用节拍血压记录和序列技术测量了自发性巴罗反射灵敏度 (BRS).
- 使用双能X射线吸收计 (DEXA) 和生物化学测定,评估了身体组成,内脏脂肪质量,脂肪素和胰岛素度.
主要成果:
- 与对照组相比,T2DM大鼠在糖尿病发病时的BRS显著较低 (3.7 ± 3.2对比16.1 ± 8.4 ms/mmHg,P = 0.01).
- 与对照组相比,T2DM大鼠表现出较高的内脏脂肪量,阿迪波涅丁和胰岛素度 (P < 0.01).
- 随着时间的推移,阿迪波涅丁和胰岛素水平的变化与T2DM大鼠中的BRS相反相关.
结论:
- 与肥胖相关的代谢障碍,包括高内脂肪和阿迪波涅丁,有助于在T2DM中减弱自发BRS.
- 这些发现表明,在2型糖尿病中,代谢失调和自主功能障碍之间存在显著的联系.
- 向内脏脂肪和阿迪波涅丁可能为改善T2DM患者的巴罗反射功能提供治疗潜力.
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