title: Serum insulin-like growth factor-I (IGF-I), IGF-binding protein-3, and growth hormone levels in collodion babies: a case-control study.
abstract: OBJECTIVE
  Because growth failure occurs in many collodion babies, we investigated serum growth hormone (GH), insulin-like growth factor-I (IGF-I) and IGF binding protein-3 (IGFBP-3) levels in collodion babies admitted to Gevher Nesibe Hospital, Kayseri, Turkey between 1999 and 2006.
  
  
  METHODS
  The newborns diagnosed clinically as 'collodion baby' were included in the study group (group 1). Because collodion babies are usually born small for gestational age (SGA) and/or premature, a control group (group 2) was formed by selecting the first infant admitted immediately after each study infant who matched for gestational age (+/- 7 days) and birth weight (+/- 100 g). All infants' blood samples were collected within the first 2 h of life for measurements of serum GH, IGFBP-3 and IGF-I levels.
  
  
  RESULTS
  Group 1 consisted of 23 collodion babies (13 males and 10 females) with gestational ages ranging from 32 to 42 weeks, and birth weights ranging from 1,300 to 3,600 g. Ten were born premature and 16 were SGA. Serum IGF-I and IGFBP-3 levels were lower but serum GH levels were higher in collodion babies than in controls. Birth weight was positively correlated with serum IGF-I (r = 0.310, p = 0.046) and IGFBP-3 (r = 0.389, p = 0.011) levels. Serum GH level was negatively correlated with birth weight (r = -0.376, p = 0.014), serum IGF-I (r = -0.567, p <0.001) and IGFBP-3 (r = -0.444, p = 0.003).
  
  
  CONCLUSIONS
  Collodion babies had lower serum IGF-I and IGFBP-3 levels but higher serum GH levels than controls in the present case-control study. The underlying mechanism needs to be explored.
authors.affiliation: Department of Paediatrics, Division of Neonatology and Paediatric Endocrinology & Metabolism, School ofMedicine, Erciyes University, Kayseri, Turkey. selimk@erciyes.edu.tr
authors.forename: Selim
authors.initials: S
authors.lastname: Kurtoglu
authors.forename: Mehmet Adnan
authors.initials: MA
authors.lastname: Ozturk
authors.forename: Esad
authors.initials: E
authors.lastname: Koklu
authors.forename: Tamer
authors.initials: T
authors.lastname: Gunes
authors.forename: Mustafa
authors.initials: M
authors.lastname: Akcakus
authors.forename: Nihal
authors.initials: N
authors.lastname: Hatipoglu
mesh_terms: D001724:Birth Weight; D016022:Case-Control Studies; D005260:Female; D019382:Human Growth Hormone / Q000097:blood*; D006801:Humans; D017490:Ichthyosis, Lamellar / Q000097:blood*; D007231:Infant, Newborn; D007234:Infant, Premature; D007236:Infant, Small for Gestational Age; D018972:Insulin-Like Growth Factor Binding Protein 3 / Q000097:blood*; D007334:Insulin-Like Growth Factor I / Q000378:metabolism*; D008297:Male; D012874:Skin Diseases, Infectious / Q000097:blood / Q000150:complications
chemical_list: D018972:Insulin-Like Growth Factor Binding Protein 3; D019382:Human Growth Hormone; D007334:Insulin-Like Growth Factor I