神经内分泌舞台上的神秘角色:究竟谁了解肥胖抑制素?聚焦下丘脑 - 垂体轴
The Mystery Actor in the Neuroendocrine Theater: Who Really Knows Obestatin? Central Focus on Hypothalamic-Pituitary Axes.
作者信息
Szlis Michał, Wójcik-Gładysz Anna, Gajewska Alina, Przybyl Bartosz Jaroslaw
机构信息
Department of Animal Physiology, The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, Instytucka 3, 05-110 Jabłonna, Poland.
出版信息
Int J Mol Sci. 2025 Jul 31;26(15):7395. doi: 10.3390/ijms26157395.
The available literature data indicate that obestatin, a peptide derived from the preproghrelin precursor, may modulate neuroendocrine function, particularly in appetite regulation and somatotrophic/gonadotrophic pathways. This review synthesizes animal studies assessing the influence of obestatin on central neuroendocrine systems. Obestatin has been shown to affect the hypothalamic appetite-regulating center through neuropeptides such as neuropeptide Y and agouti-related peptide, yet findings remain inconsistent between species. In rodents, its effects on food intake and energy balance are inconclusive, whereas sheep models demonstrate significant alterations in orexigenic gene expression and peptide immunoreactivity. Regarding the somatotrophic axis, obestatin showed no significant effect on growth hormone (GH) secretion in rodents; however, in sheep, it modulated growth hormone-releasing hormone and somatostatin mRNA expression, elevated pituitary GH synthesis, and increased circulating GH levels. Studies involving the gonadotrophic axis demonstrated the presence of obestatin in Leydig and pituitary cells, with in vitro evidence suggesting its ability to modulate intracellular pathways implicated in gonadoliberin, luteinizing hormone, and follicle-stimulating hormone release. The collective findings discussed in this article indicate that obestatin interacts with multiple hypothalamic-pituitary axes, though its effects vary depending on species and experimental conditions. This review highlights the complexity of obestatin's central actions and the need for further research to elucidate its functional relevance in neuroendocrine regulation.
现有文献数据表明,胃饥饿素原衍生肽肥胖抑制素可能调节神经内分泌功能,尤其是在食欲调节和生长激素/促性腺激素途径方面。这篇综述综合了评估肥胖抑制素对中枢神经内分泌系统影响的动物研究。肥胖抑制素已被证明可通过神经肽Y和刺鼠相关肽等神经肽影响下丘脑食欲调节中心,但不同物种间的研究结果仍不一致。在啮齿动物中,其对食物摄入和能量平衡的影响尚无定论,而绵羊模型显示食欲相关基因表达和肽免疫反应性有显著变化。关于生长激素轴,肥胖抑制素对啮齿动物的生长激素(GH)分泌无显著影响;然而,在绵羊中,它调节生长激素释放激素和生长抑素mRNA表达,提高垂体GH合成,并增加循环GH水平。涉及促性腺激素轴的研究表明,睾丸间质细胞和垂体细胞中存在肥胖抑制素,体外证据表明其有能力调节与促性腺激素释放激素、黄体生成素和促卵泡激素释放相关的细胞内途径。本文讨论的总体研究结果表明,肥胖抑制素与多个下丘脑 - 垂体轴相互作用,但其影响因物种和实验条件而异。这篇综述强调了肥胖抑制素中枢作用的复杂性以及进一步研究以阐明其在神经内分泌调节中的功能相关性的必要性。
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Theriogenology. 2020-3-15
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