title: 26-Hydroxycholesterol disulfate: metabolism and excretion in the normal neonate.
abstract: Deuterated 26-hydroxycholesterol disulfate has been given in a tracer amount to neonates to evaluate the pool size, metabolism and excretion of the endogenously occurring compound in meconium. In a group of 5 normal neonates excretion of endogenous 26-hydroxycholesterol during the initial 72 h of life ranged from 327 to 1096 micrograms. Recovery of administered isotope during the same period was 66-98%. Only trace amounts of 26-hydroxycholesterol were recovered in urine. The findings indicate that relative to bile acid pool size, the normal neonate has a small intestinal pool of 26-hydroxycholesterol which, for the most part, is rapidly excreted and does not contribute significantly to bile acid synthesis. The techniques developed during the course of the study provide an approach to non invasive metabolic studies that give insights on the normal transition from fetal to neonatal life.
mesh_terms: D001647:Bile Acids and Salts / Q000378:metabolism; D003903:Deuterium; D006801:Humans; D006888:Hydroxycholesterols / Q000378:metabolism* / Q000652:urine; D007231:Infant, Newborn / Q000378:metabolism*; D008470:Meconium / Q000378:metabolism
chemical_list: D001647:Bile Acids and Salts; D006888:Hydroxycholesterols; C051189:26-hydroxycholesterol disulfate; D003903:Deuterium