缺会通过改变外围和中央的味道处理机制来增强盐的偏好
Akiyo Kawano1, Chizuko Inui-Yamamoto2, Yousuke Inoue3
1Department of Tissue and Developmental Biology, Osaka University Graduate School of Dentistry, Suita, Osaka, 565-0871, Japan; Department of Oral Health Sciences, Otemae College, Nishinomiya, Hyogo, 662-8552, Japan; Department of Dental Anesthesiology, Osaka University Graduate School of Dentistry, Suita, Osaka, 565-0871, Japan.
Journal of oral biosciences
|February 8, 2025
概括
缺会通过影响大脑反应改变盐的偏好. 这项研究发现,在缺乏的老鼠中,与味道和液体平衡相关的关键大脑区域的神经活动减少,这解释了它们增加的盐摄入量.
科学领域:
- 神经科学是一个神经科学.
- 营养科学 营养科学
- 生理学 生理学 生理学
背景情况:
- 众所周知,缺乏会改变口味偏好,但神经机制尚未完全理解.
- 改变盐的偏好可能涉及控制味觉处理和液体平衡的大脑区域的变化.
研究的目的:
- 为了研究在缺乏症中改变盐的偏好背后的神经机制.
- 检查缺乏对脑干和下丘脑中神经元活动的影响,与盐味和液体调节有关.
主要方法:
- 在缺乏的老鼠身上进行了味觉行为测试,包括 tympani神经切割 (CTx) 和通道阻塞剂的使用.
- 通过测量c-Fos-like蛋白表达在副核 (PBN),上视核 (SON) 和副腹核 (PVN) 中进行神经元活动的评估.
主要成果:
- 缺乏的老鼠更喜欢高度的盐.
- 在缺乏的老鼠中,CTx和阿米洛里德都没有改变盐的偏好.
- 与对照者相比,高盐刺激导致缺乏的老鼠在PNN,SON和PVN中的c-Fos表达减少.
结论:
- 缺会破坏化 (NaCl) 摄取,并改变味觉和液体平衡通路中的神经元反应.
- 这些神经变化可能会导致缺乏症中修改的NaCl摄入行为.
- 该研究提供了对味觉功能障碍和与缺乏相关的盐偏好改变的神经基础的见解.
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