在恒温控制中NPVF信号的性别特异性作用
Herbert Herzog1,2, Julia Koller2, Lei Zhang1,3
1Eating Disorder Research Program, St. Vincent's Centre for Applied Medical Research, Faculty of Medicine, UNSW Sydney, 405 Liverpool Street, Darlinghurst, Sydney, NSW 2010, Australia.
Biomolecules
|February 27, 2026
概括
神经VF (NPVF) 调节能量和葡萄糖平衡,缺少它会影响女性的水摄入量和骨密度. 代谢的性别差异很明显,特别是在高脂肪饮食下.
科学领域:
- 代谢调节 代谢调节 代谢调节
- 神经内分泌学神经内分泌学
- 哺乳动物生理学 哺乳动物生理学
背景情况:
- 神经VF (NPVF) 涉及到平稳调节,但直接证据有限.
- 酸RFamide在生理控制中起作用.
- 了解NPVF的功能需要进行体内研究.
研究的目的:
- 研究NPVF在能量和葡萄糖恒温中的作用.
- 描述一个NPVF淘汰赛小鼠模型.
- 为了确定NPVF缺乏的性别特异性代谢效应.
主要方法:
- 生成一个NPVF淘汰赛小鼠模型 (Npvf-/-).
- 在室温 (RT) 和热中性 (TN) 中评估代谢参数.
- 在标准和高脂肪饮食 (HFD) 条件下的评估.
- 分析身体重量,组成,摄入水,骨矿物质含量,脂肪,耐葡萄糖和胰岛素作用.
主要成果:
- 雌性Npvf-/-小鼠的水摄入量减少,骨/脂肪性发生变化,而雄性小鼠在食方面基本不受影响.
- 在HFD患者中,NPvf删除导致了双性多和体重增加,掩盖了性别差异.
- 葡萄糖耐受性和胰岛素作用表现出复杂的取决于性别和状况的变化,女性在TN上提高了胰岛素敏感性,男性在TN上受损了HFD的作用.
结论:
- NPVF是能量和葡萄糖代谢的关键调节者.
- 通过NPVF进行的新陈代谢调节表现出显著的性别二态.
- 缺少NPVF的影响是由环境 (温度) 和营养 (饮食) 因素调节的.
相关概念视频
NF-κB-dependent Signaling Pathway
10.1K
The transcription factor NF-κB was discovered in 1986 in the lab of Nobel laureate Professor David Baltimore, for its interaction with the immunoglobulin light chain enhancer in B-cells. After more than three decades of study, it is now evident that NF-κB regulates the expression of over 100 genes. Most of these genes play an essential role in the innate and adaptive immune responses as well as the inflammatory responses of animals.
NF-κB-dependent Signaling Mechanism
The...
NF-κB-dependent Signaling Mechanism
The...
10.1K
Parasympathetic Signaling
3.5K
Parasympathetic signaling plays a crucial role in regulating various physiological processes. It involves the release of acetylcholine (ACh) by parasympathetic neurons, which can have localized and short-lived effects. The majority of ACh released is rapidly inactivated at the synapse by the enzyme acetylcholinesterase (AChE), which hydrolyzes Ach into choline and acetate. Additionally, the tissue cholinesterase deactivates any ACh diffusing into the surrounding tissues.
The effects of...
The effects of...
3.5K
Nitric Oxide Signaling Pathway
6.5K
Nitric oxide (NO), an inorganic gas, acts as a potent second messenger in most animal and plant tissues. NO diffuses out of the cells that produce it and enters the neighboring cells to generate a downstream response. NO synthase (NOS) catalyzes NO production by the deamination of the amino acid arginine. There are three isoforms of NOS. Endothelial cells have endothelial NOS (eNOS), nerve and muscle cells have neuronal NOS (nNOS), and macrophages produce inducible NOS (iNOS) upon exposure...
6.5K
Non-Canonical Wnt Signaling Pathways
8.5K
Wnt is a zygotic effect gene that is expressed during very early embryonic development. It regulates various processes in animals starting from early development through the adult stage, such as organogenesis in the embryo and maintenance of neuronal and blood stem cells. Wnt proteins can induce a wide variety of intracellular pathways depending upon the specific abilities of different Wnt ligands to form a complex with shared and cognate receptors in the presence of different co-receptors. The...
8.5K
Notch Signaling Pathway
6.7K
The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not...
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not...
6.7K
Regulation of Food Intake
3.0K
Short-term regulation of food intake primarily involves neural signals from the gastrointestinal (GI) tract, blood nutrient levels, and GI tract hormones. Communication between the gut and brain via vagal nerve fibers plays a significant role in evaluating the contents of the gut. Clinical studies have shown that protein ingestion produces a more prolonged response in these nerve fibers compared to an equivalent amount of glucose. Additionally, the activation of stretch receptors caused by GI...
3.0K


