Rodríguez Rodríguez E M, Sanz Alaejos M T, Díaz Romero C
Department of Analytical Chemistry, Food Science & Toxicology, University of La Laguna, Spain.
Eur J Clin Chem Clin Biochem. 1995 Mar;33(3):127-33. doi: 10.1515/cclm.1995.33.3.127.
Urinary selenium (Se) concentrations (microgram/l of urine and microgram/g of creatinine) and urinary Se excretions (microgram/d and microgram/d.kg of body weight) have been determined in healthy Canarian people. Urinary Se status was relatively low and similar to those data published from European regions. Females excreted daily significantly (P = 0.005) higher amounts of Se per kg of body weight in urine than males. An increase of daily urinary Se excretion was observed up to 30 years of age. Children (< 10 years old) had daily urinary Se excretion per kg of body weight higher than persons with age > 10 years old. Both units of Se excretion, microgram/d and microgram/d.kg, increased or decreased respectively with weight and height of the individuals. Food habits such as consumption of rich protein or rich fibre food, and drinking alcohol or coffee as well as smoking do not seem to influence the urinary Se status. Depletion of daily urinary Se excretion was observed with the increase of physical exercise. Unit of concentration (microgram/g of creatinine) is a more adequate indicator of the urinary Se excretion than the unit microgram/l.
已测定了加那利群岛健康人群的尿硒浓度（微克/升尿液和微克/克肌酐）以及尿硒排泄量（微克/天和微克/天·千克体重）。尿硒水平相对较低，与欧洲地区公布的数据相似。女性每千克体重每日尿硒排泄量显著高于男性（P = 0.005）。观察到尿硒日排泄量在30岁之前有所增加。儿童（<10岁）每千克体重的尿硒日排泄量高于10岁以上人群。硒排泄的两个单位，即微克/天和微克/天·千克，分别随个体体重和身高的增加或减少而增减。食用富含蛋白质或纤维的食物、饮酒或咖啡以及吸烟等饮食习惯似乎不会影响尿硒水平。随着体育锻炼的增加，尿硒日排泄量会减少。浓度单位（微克/克肌酐）比微克/升单位更能准确反映尿硒排泄情况。
