Basic Study on Transepidermal Water Loss (TEWL) in Preschool ChildrenResiding a Large City and an Outside Urban Area

这项研究的目的是记录居住在大城市或市区以外地区的婴儿的经皮水分丢失(TEWL)以及个人和环境因素，并寻找任何明显的特征和相关性。居住在大城市(福井县)或市区(东京都)以外地区的儿童经皮水分损失有显著差异，同时测得的角质层水分含量也有显著差异。显然，居住在市区以外的行政区(福井县)的婴儿比居住在大城市(东京都)的婴儿在角质层中保留的水分更多，并通过表皮渗出更多的水分。这表明婴儿的TEWL可能因年龄和性别而不同，并受室外湿度、室外温度、表面温度和角质层水分含量的影响。此外，儿童的自我控制行为和应激行为的发展状况也会影响S的学习成绩。

The aim of this study is to document transepidermal water loss (TEWL) in infants residing in a region located outside a large city or urban area as well as individual and environmental factors, and to search for any distinguishing features and correlations. A significant difference was observed in transepidermal water loss in children residing in a region located outside a large city (Fukui Prefecture) or urban area(Tokyo Metropolis), and a significant difference was observed also in cuticle water content measured at the same time. It was clear that infants living in an administrative district outside of an urban area (Fukui Prefecture) retained more water in their cuticles than infants residing in a large city (Tokyo Metropolis), and transpired more water through the epidermis. It was suggested that TEWL in infants may differ according to age and gender, and is influenced by outdoor humidity, outdoor temperature, surface temperature, and cuticle water content. Also, TEWL is influenced by the status of a child’ s development of self-controlling behavior and stress behavior.