骨肌肉代谢在猪产后生长期间是动态的
Linnea A Rimmer1, Erika R Geisbrecht2, Michael D Chao1
1Department of Animal Sciences and Industry, Kansas State University, Manhattan, KS 66506, USAtravisoquinn@ksu.edu (T.G.O.); .
Metabolites
|July 26, 2024
概括
猪骨肌肉代谢在生长过程中发生变化,影响料效率. 酸盐的新陈代谢发生动态变化,建立了一个与肌肉生长相关的独特代谢指纹.
科学领域:
- 动物科学动物科学
- 生物化学 生物化学
- 生理学 生理学 生理学
背景情况:
- 骨肌肉的新陈代谢对于猪的料效率至关重要.
- 产后发育涉及肌肉生理学的重大变化.
- 了解肌肉代谢转移有助于优化动物生长和生产.
研究的目的:
- 为了研究骨肌肉代谢酶丰度在婴儿出生后生长过程中的变化.
- 分析不同类型的猪肌肉中pyruvate代谢和三碳酸 (TCA) 循环活动的动态.
- 为了建立与产后肌肉缩相关的代谢指纹.
主要方法:
- 从五个不同的年龄 (20180天) 的车中收集了长腰 (LD),腰 (LAT) 和腰 (MS) 肌肉样本.
- 评估了关键代谢酶的丰富性,包括乳酸脱酶 (LDHα),酸盐碳酸酶 (PC) 和酸盐脱酶α 1 (PDHα1).
- 在孤立的肌肉线粒体中利用13C标记的代谢物追踪来分析TCA循环中介丰富模式.
主要成果:
- 乳酸脱酶 (LDHα) 活性随着年龄的增长而下降,这表明从糖溶性代谢转向更氧化代谢.
- 酸盐核糖酶 (PC) 和酸盐脱酶α 1 (PDHα1) 水平因年龄和肌肉类型而异,表明酸盐进入TCA循环的动态调节.
- 同位素丰富模式显示了87天后酸盐代谢的显著变化,特别是在LAT和MS肌肉中,突出了特定于年龄和肌肉的代谢适应.
结论:
- 猪骨肌在整个产后生长过程中表现出动态的代谢变化.
- 酸盐代谢是受年龄和肌肉纤维类型影响的关键调节点.
- 这些发现提供了肌肉生长的代谢指纹,这与提高猪料效率有关.
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