Role of Hypothalamic Transforming Growth Factor-β (TGF-β)/Smad Signaling in Feeding Regulation in Chickens.

IF 1.8 4区农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Journal of Poultry Science Pub Date : 2022-10-25 DOI:10.2141/jpsa.0220040

Takaoki Saneyasu, Miku Ueda, Kanami Nagata, Jiawei Chai, Kazuhisa Honda, Hiroshi Kamisoyama

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Abstract

Previous studies in mammalian obesity models have suggested that central transforming growth factor-β (TGF-β) controls the gene expression of appetite-regulating neuropeptides and peripheral energy metabolism. In the present study, we investigated the possible involvement of central TGF-β/Smad signaling in feeding regulation in chickens. Central administration of TGF-β1 resulted in phosphorylation of Smad2 in the hypothalamus of chicks and suppressed feed intake without changing the gene expression of hypothalamic appetite-regulating neuropeptides (neuropeptide Y, agouti-related protein, proopiomelanocortin, and corticotropin-releasing factor). However, neither fasting nor refeeding induced the phosphorylation of hypothalamic Smad2. These findings suggest that the activation of hypothalamic TGF-β/Smad signaling suppresses feed intake in chicks but it might not occur in response to feeding status.

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下丘脑转化生长因子-β (TGF-β)/Smad信号在鸡饲养调节中的作用

先前在哺乳动物肥胖模型中的研究表明，中枢转化生长因子-β (TGF-β)控制食欲调节神经肽的基因表达和外周能量代谢。在本研究中，我们研究了中枢TGF-β/Smad信号在鸡饲养调节中的可能参与。中央给药TGF-β1导致鸡下丘脑Smad2磷酸化，抑制采食量，但不改变下丘脑食欲调节神经肽(神经肽Y、豚鼠相关蛋白、促黑素原、促肾上腺皮质激素释放因子)的基因表达。然而，禁食和再喂养均未引起下丘脑Smad2的磷酸化。这些发现表明，下丘脑TGF-β/Smad信号的激活抑制了雏鸡的采食量，但可能不是对饲喂状态的反应。

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来源期刊

Journal of Poultry Science AGRICULTURE, DAIRY & ANIMAL SCIENCE-

CiteScore

2.80

自引率

13.30%

发文量

审稿时长

12 months

期刊介绍： The Journal of Poultry Science will publish original reports and reviews which either make an original contribution to fundamental science or are of obvious application to the industry. Subjects which are covered include: breeding and genetics, nutrition and feeds, physiology, reproduction, immunology, behavior, environmental science, management and housing welfare, processing and products, and health in poultry. Submission of original articles to the Journal is open to all poultry researchers. The review articles are invited papers written by international outstanding researchers. Articles will be published in English, American style.