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

本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失水（TEWL）以及个人和环境因素，并寻找任何显著特征和相关性。居住在大城市（福井县）和市区（东京都）以外地区的儿童经皮失水有显著差异，同时测量的角质层含水量也有显著差异。很明显，生活在市区以外的行政区域（福井县）的婴儿比生活在大城市（东京都）的婴儿在角质层中保留了更多的水，并且通过表皮蒸发了更多的水。婴儿TEWL可能因年龄和性别而异，并受室外湿度、室外温度、体表温度和角质层含水量的影响。此外，外语能力还受儿童自我控制行为和压力行为发展状况的影响。

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.