运动刺激的脂肪组织中的Resolvin生物合成被高脂肪饮食诱导的上腺素缺乏症所废除
bioRxiv : the preprint server for biology
|September 4, 2024
概括
运动促进脂肪组织中的抗炎途径,但高脂肪饮食通过减少catecholamine产量来破坏这些效应. 这凸显了饮食对运动的影响.
科学领域:
- 代谢健康和炎症研究研究.
- 脂肪组织生物学 脂肪组织生物学
- 运动生理学 运动生理学
背景情况:
- 白色脂肪组织的饮食引起的炎症与胰岛素抵抗有关.
- 运动可以防止慢性炎症和胰岛素抵抗,而不依赖于减肥.
- 运动的抗炎作用背后的精确机制,特别是脂肪组织的抗炎作用,尚未完全理解.
研究的目的:
- 为了研究运动是否刺激脂肪组织内的亲溶解通路.
- 为了确定高脂肪饮食 (HFD) 是否会改变脂肪组织中运动刺激的前决性反应.
- 为了测试这种假设,即HFD食通过抑制上腺体信号传递,从而促进脂肪组织炎症,从而损害运动诱导的解像度.
主要方法:
- 小鼠被食了对照或HFD2周,然后每天跑步机运动4周.
- 评估葡萄糖处理,体重,身体组成和运动表现.
- 测量了甲基胺,它们的生物合成酶,脂肪组织专业的亲溶解脂质介质 (SPM) 生物合成,以及巨细胞的表型/丰度.
主要成果:
- 与久坐控制组相比,运动增加了脂肪组织中的SPM生物合成和M2巨细胞.
- 这些运动诱导的促溶解效应被HFD养所废除.
- 通过降低上腺腺体PNMT表达,HFD食抑制了运动诱导的上腺素的产生.
结论:
- 运动通过增强SPM生物合成和M2巨细胞群来促进脂肪组织炎症的解消.
- 高脂肪饮食减少了运动的这些有益影响.
- 这种饮食诱导的损伤是由减少的甲基荷胺生物合成,特别是上腺素的介导.
相关概念视频
Overview of Lipid Metabolism
1.2K
Lipid metabolism is a crucial process in the human body that involves the synthesis and degradation of lipids. This process is essential for energy production, cell membrane formation, and hormone production, among other functions.
Lipolysis: The Breakdown of Lipids:
Lipolysis is the process of breaking down lipids, particularly triglycerides, into glycerol and fatty acids. This process typically occurs in the adipose tissue and is triggered by various hormones, including glucagon and...
Lipolysis: The Breakdown of Lipids:
Lipolysis is the process of breaking down lipids, particularly triglycerides, into glycerol and fatty acids. This process typically occurs in the adipose tissue and is triggered by various hormones, including glucagon and...
1.2K
Adrenergic Receptors: β Subtype
1.6K
β-adrenoceptors have varied sensitivities towards adrenaline, noradrenaline, and isoprenaline. The order of agonist potency is as follows:
Isoprenaline > Adrenaline > Noradrenaline
Neurotransmitter binding to these receptors causes activation of adenylyl cyclase resulting in increased concentrations of cAMP and modulation of calcium ion channels within the cell. They are further classified into β1, β2, and β3 subtypes.
β1-adrenoceptors: β1-adrenoceptors...
Isoprenaline > Adrenaline > Noradrenaline
Neurotransmitter binding to these receptors causes activation of adenylyl cyclase resulting in increased concentrations of cAMP and modulation of calcium ion channels within the cell. They are further classified into β1, β2, and β3 subtypes.
β1-adrenoceptors: β1-adrenoceptors...
1.6K


