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食物质地和维生素D会影响小鼠下的形状和根
Elsa M Van Ankum1, Kadin B Majcher2, Allan T Dolovich2
1Department of Anatomy, Physiology & Pharmacology, University of Saskatchewan, Saskatoon, Canada.
Anatomical record (Hoboken, N.J. : 2007)
|September 13, 2023
概括
工业化后常见的软质,缺乏营养的饮食改变了小鼠下和根的形状. 这项研究强调了饮食质地,而不是维生素D,如何影响牙发育,提供了对人类人口变异的见解.
科学领域:
- 进化生物学是进化的生物学.
- 营养科学 营养科学
- 牙形态学 牙形态学
背景情况:
- 工业化导致了更软的饮食和维生素D缺乏,与人类人口中牙问题增加有关.
- 以前的研究表明,饮食,维生素D和牙发育之间存在联系,但具体机制尚不清楚.
研究的目的:
- 用小鼠模型研究饮食质地和维生素D水平对下和第三 (M3) 形态的影响.
- 为了测试一种假设,即富含维生素D且质地坚硬的饮食对牙发育是最佳的.
主要方法:
- 给小鼠吃的是软饮食或硬饮食,有或没有维生素D补充剂.
- 微计算机断层扫描 (μCT) 用于分析成人小鼠和胚胎的下和M3根发育和形态.
- 使用3D地标和主要组件分析 (PCA) 来量化形状变化.
主要成果:
- 饮食质地显著影响了下形状,软饮食小鼠表现出更短,更窄的下,反映了人类人口的发现.
- 吃软饮食的小鼠表现出明显更宽的M3根和更大的根通道.
- 在这个模型中,维生素D水平没有影响M3开始的时间,也没有显著改变牙形态.
结论:
- 后工业化,软饮食可以诱导显著的牙变异,特别是在下和M3根形态.
- 在研究的小鼠模型中,饮食质地在塑造牙结构方面比维生素D更为关键.
- 这些发现为现代饮食习惯对人类牙变异的影响提供了宝贵的见解.
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