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特定于中链甘油三糖的食欲是通过肝脏中链脂肪酸的β氧化来调节的
Tsugunori Maruyama1, Sho Matsui1, Ryosuke Kobayashi2
1Laboratory of Nutrition Chemistry, Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto, Japan.
American journal of physiology. Endocrinology and metabolism
|April 10, 2024
概括
小鼠可以区分中链甘油三化物 (MCT) 和长链甘油三化物 (LCT). 肝脏β-氧化对于MCT特异性食欲至关重要,可能涉及下丘脑氨酸,为肥胖管理提供了洞察力.
科学领域:
- 代谢调节 代谢调节 代谢调节
- 控制食欲 控制自己的食欲
- 营养科学 营养科学
背景情况:
- 长链甘油三 (LCTs) 与肥胖有关,而中链甘油三 (MCTs) 显示出潜在的抗肥胖作用.
- 管理MCT摄入的监管机制尚不清楚.
- 了解MCT食欲对于制定打击肥胖的策略至关重要.
研究的目的:
- 为了研究小鼠中中链甘油三酸 (MCT) 食欲的调节.
- 为了确定肝脏β-氧化是否影响MCT特定的食欲.
- 探索下丘脑神经在MCT摄入中的作用.
主要方法:
- 产生了肝脏特异性中链乙-CoA脱酶 (MCAD) 缺乏的小鼠 (MCADL-/-).
- 通过使用双瓶选择测试和微结构分析,评估了MCT和LCT解决方案的偏好.
- 在口服脂肪测试后测量了下丘脑基因表达 (加拉宁,Qrfp,Nmu).
主要成果:
- MCADL-/-小鼠对MCT溶液的偏好和食欲显著降低,但对LCT溶液的偏好和食欲没有显著降低.
- 在MCADL-/-小鼠中,MCT和LCT溶液的可口性没有受到影响.
- 口服MCT测量增加了对照小鼠的下丘脑氨酸表达,这种效应在MCADL-/-小鼠中不存在.
结论:
- 肝脏β-氧化对于MCT的特定胃口至关重要,但不是LCT.
- 根据肝脏的β-氧化,MCT产生的下丘脑氨酸诱导可能会调节MCT摄入量.
- 针对MCT特定的食欲可以通过促进MCT消费而不是LCTs来提供预防肥胖的策略.
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