title: [Relationship between serum adiponectin and bone mineral density in preterm infants].
abstract: OBJECTIVE
  To examine serum adiponectin level in preterm infants and to evaluate the relationship between serum adiponectin and bone mineral density in preterm infants.
  
  
  METHODS
  Seventy-two appropriate-for-gestational-age neonates were classified into three groups according to their gestational ages: early preterm (31-33(+6) weeks, 13 cases), late preterm (34-36(+6) weeks, 16 cases), and full-term (37-42 weeks, 43 cases). Venous blood was collected at one week of their life to measure serum adiponectin concentration. During the period, omnisense ultrasound bone sonometer was applied to measure speed of sound (SOS) of the left tibia.
  
  
  RESULTS
  The median of tibia SOS in the early preterm group was significantly lower than in the late preterm and full term groups (P<0.05), and the median of tibia SOS in the late preterm group was lower than in the full-term group (P<0.05). Serum adiponectin level was lowest in the early preterm group, and the full-term group had the highest serum adiponectin level. Serum adiponectin level was positively correlated with tibia SOS in preterm infants (r=0.664, P<0.05). According to the result of multivariate linear stepwise regression analysis, serum adiponectin and birth weight were independent predictor of tibia SOS in preterm infants.
  
  
  CONCLUSIONS
  Serum adiponectin level is lower in preterm infants than that in full-term infants. There is a positive correlation between serum adiponectin and bone mineral density in preterm infants.
authors.affiliation: Division of Neonatology, Children's Medical Center, Second Xiangya Hospital of Central South University, Changsha 410011, China. wycpyfu@163.com.
authors.forename: Tao
authors.initials: T
authors.lastname: Wang
authors.forename: Ping-Yang
authors.initials: PY
authors.lastname: Chen
authors.forename: Zi-Yan
authors.initials: ZY
authors.lastname: Zhao
authors.forename: Ya-Fan
authors.initials: YF
authors.lastname: Zhao
authors.forename: Kai-Ju
authors.initials: KJ
authors.lastname: Luo
authors.forename: Ming-Feng
authors.initials: MF
authors.lastname: He
authors.forename: Yong-Hui
authors.initials: YH
authors.lastname: Yang
mesh_terms: D052242:Adiponectin / Q000097:blood*; D001724:Birth Weight; D015519:Bone Density; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature / Q000097:blood*; D016014:Linear Models; D008297:Male
chemical_list: D052242:Adiponectin