氨酸氧酶在下丘脑上母细胞核区域的 Knockdown 诱导肥胖和葡萄糖不耐受
Yahong Zhang1, Tsung-Huang Tsai2, Michael Ezrokhi2
1VeroScience LLC, Tiverton, Rhode Island, USA, yahong_zhang@veroscience.com.
Neuroendocrinology
|December 21, 2023
概括
击败氨酸氧酶在超母细胞核中导致肥胖和葡萄糖不耐受,影响燃料代谢. 这些影响是长期的,性别不特定的,高脂肪饮食加剧了这些影响.
科学领域:
- 神经科学是一个神经科学.
- 代谢研究研究 代谢研究
- 内分泌学 在内分泌学.
背景情况:
- 超母细胞核 (SuMN) 调节养和燃料代谢.
- 在SuMN中,负责这些效应的特定神经元类型尚不清楚.
研究的目的:
- 调查氨酸氧酶 (TH) 神经元在SuMN中调节外围燃料代谢中的作用.
- 为了确定 SuMN TH 淘汰 (THx) 对代谢综合征 (MS) 发展的影响.
主要方法:
- 病毒介导的shRNA被用来在雌性斯普拉格-道利大鼠中实现SuMN TH敲击.
- 评估了代谢参数,包括体重,脂肪量,葡萄糖耐受性和胰岛素敏感性.
- 长期影响 (长达1年) 和高脂肪饮食和性别的影响在各种老鼠模型中进行了检查.
主要成果:
- SuMN-THx诱导肥胖,葡萄糖不耐受,升高的勒和甘油三,以及改变肝脏基因表达 (葡萄糖原性,脂质原性,促炎性).
- 观察到白色脂肪酸氧化减少,皮质水平改变,肝脏昼夜节律受损.
- 观察到休息期间食增加和潜在的 ghrelin 耐药性,高脂肪饮食增强了效果,在男性中观察到.
结论:
- SuMN TH神经元在调节外围燃料代谢方面发挥着至关重要的作用.
- SuMN多巴胺循环影响新陈代谢和行为,有助于代谢综合征的发展.
- 观察到的代谢障碍是长期的,不特定于性别,并且由饮食因素加剧.
更多相关视频
相关概念视频
Regulation of Food Intake
239
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...
239
Obesity
507
The Body Mass Index (BMI) is a numerical value derived from a person's weight and height, used to categorize individuals into weight ranges. It is calculated using the formula: weight in kilograms divided by height in meters squared. Obesity is a health condition characterized by excessive accumulation of adipose tissue that poses health risks, often diagnosed with a BMI ≥ 30. This excess fat storage occurs when surplus dietary calories are converted into triglycerides and stored in...
507
Major Hormones and Their Functions
410
Hormones, the biochemical messengers produced by endocrine glands, are pivotal in regulating bodily functions and maintaining homeostasis. Each hormone's balance is crucial; imbalances can lead to significant physiological disruptions. Major hormones include oxytocin, cortisol, epinephrine, estrogen, testosterone, thyroxine, growth hormone, insulin, and glucagon.
Oxytocin, produced in the hypothalamus and released by the pituitary gland, plays a role in social bonding, childbirth, and...
Oxytocin, produced in the hypothalamus and released by the pituitary gland, plays a role in social bonding, childbirth, and...
410


