title: Early-pregnancy soluble Fas levels in idiopathic small-for-gestational-age pregnancies.
abstract: OBJECTIVE
  We sought to determine first- and second-trimester serum soluble Fas (sFas) and placental growth factor (PlGF) levels in idiopathic small-for-gestational-age (SGA) pregnancies.
  
  
  METHODS
  We measured sFas and PlGF levels in women who delivered SGA infants uncomplicated by preeclampsia and in control subjects. For sFas there were 34 cases and 318 control subjects in the first trimester and 9 cases and 11 control subjects in the second trimester. For PlGF there were 31 cases and 281 control subjects in the first trimester and 8 cases and 11 control subjects in the second trimester.
  
  
  RESULTS
  SGA pregnancies had lower sFas levels than control subjects in the second trimester (3703 + or - 209 pg/mL vs 4562 + or - 241 pg/mL; P = .015), but not in the first trimester (4892 + or - 191 pg/mL vs 4971 + or - 177 pg/mL; P = .68). There was no difference in PlGF levels between SGA and normal pregnancies in both trimesters.
  
  
  CONCLUSIONS
  Serum sFas levels were lower in idiopathic SGA pregnancies in the second trimester, but not in the first. There was no difference in serum PlGF levels in either trimester.
authors.affiliation: Department of Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Boston, MA, USA. guysteinberg@hotmail.com
authors.forename: Guy
authors.initials: G
authors.lastname: Steinberg
authors.forename: Chulmin
authors.initials: C
authors.lastname: Lee
authors.forename: Jose Alejandro
authors.initials: JA
authors.lastname: Rauh-Hain
authors.forename: Jeffrey
authors.initials: J
authors.lastname: Ecker
authors.forename: Eliyahu V
authors.initials: EV
authors.lastname: Khankin
authors.forename: Chaur-Dong
authors.initials: CD
authors.lastname: Hsu
authors.forename: Bruce
authors.initials: B
authors.lastname: Cohen
authors.forename: Sarosh
authors.initials: S
authors.lastname: Rana
authors.forename: S Ananth
authors.initials: SA
authors.lastname: Karumanchi
authors.forename: Ravi
authors.initials: R
authors.lastname: Thadhani
authors.forename: Michele R
authors.initials: MR
authors.lastname: Hacker
authors.forename: Kee-Hak
authors.initials: KH
authors.lastname: Lim
mesh_terms: D000328:Adult; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007236:Infant, Small for Gestational Age; D008565:Membrane Proteins / Q000097:blood*; D011247:Pregnancy; D011261:Pregnancy Trimester, First / Q000097:blood; D011262:Pregnancy Trimester, Second / Q000097:blood; D019014:fas Receptor / Q000097:blood*
chemical_list: C491901:FAS protein, human; D008565:Membrane Proteins; C098069:PIGF protein, human; D019014:fas Receptor