肥胖会影响肺的低氧适应
Sophia Pankoke1,2, Theresa Schweitzer3,4, Rolf Bikker5
1Institute of Functional and Applied Anatomy, Hannover Medical School, Hannover, Germany.
概括
肺部疾病中的肥胖悖论表明,肥胖可以对肺部适应慢性缺氧产生有害和保护性影响,从而影响疾病的发病.
科学领域:
- 肺部医学 肺部医学
- 代谢障碍 代谢障碍 代谢障碍
- 蛋白质组学是指蛋白质组学.
背景情况:
- "肥胖悖论"表明,肥胖在慢性疾病中可能具有有利影响,但其在肺部疾病中的作用仍在争论中.
- 人类研究因混因素而复杂,需要控制的动物模型来研究肥胖对肺部适应缺氧的影响.
研究的目的:
- 使用受控动物模型研究饮食诱导的肥胖对肺部适应慢性缺氧的差异性影响.
- 探索分子基础,特别是肺蛋白质组,这些适应在瘦与肥胖缺氧小鼠的基础上.
主要方法:
- 雄性C57BL/6小鼠在30周内接受了对照或高脂肪饮食.
- 每组饮食中的一半动物在3周内暴露于慢性缺氧 (13%O2).
- 评估了生理参数,肺结构和肺蛋白质组,重点关注血管和细胞外基质 (ECM) 蛋白质.
主要成果:
- 慢性缺氧诱导右心室缩和肺血管变化,无论体重如何.
- 瘦身缺氧小鼠表现出改变的凝血因子和ECM组成,表明高凝血性和肺 hyperinflation.
- 肥胖的缺氧小鼠显示血液CO2 (高通风) 降低和内皮表面积增加,表明不同的保护性适应.
结论:
- 饮食引起的肥胖会显著改变肺部适应慢性缺氧的能力,产生不良和保护性影响.
- 这些适应性与肺蛋白质组内的血管和细胞外矩阵蛋白质的变化有关.
- 这些发现强调了在肺部疾病的发病和治疗中考虑个体肥胖状况的重要性.
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