title: Factors influencing pulmonary surfactant protein A levels in cord blood, maternal blood and amniotic fluid.
abstract: The purpose of this study was to evaluate factors that influence pulmonary surfactant protein A (SP-A) levels in cord blood, maternal blood and amniotic fluid, as well as to establish the normal range of serum SP-A. Labor significantly influenced cord blood SP-A levels. The SP-A levels in maternal blood after delivery were correlated with, but higher than those before delivery. There was a correlation between SP-A levels in amniotic fluid and cord blood. Neonatal serum SP-A was not correlated with maternal SP-A levels. The normal range of SP-A in cord blood was 2.7-21.7 ng/ml following cesarean section without labor, 4.8-50.2 ng/ml after labor at gestational weeks 36-38, and 12.2-44.6 ng/ml at gestational weeks 39-41. SP-A levels in maternal blood before and after delivery and amniotic fluid were 6. 0-74.0, 9.6-73.6 and 403.4-24,540 ng/ml, respectively.
authors.affiliation: Department of Obstetrics and Gynecology, Hokkaido University School of Medicine, Sapporo, Japan. chotarou@med.hokudai.ac.jp
authors.forename: K
authors.initials: K
authors.lastname: Cho
authors.forename: T
authors.initials: T
authors.lastname: Matsuda
authors.forename: S
authors.initials: S
authors.lastname: Okajima
authors.forename: Y
authors.initials: Y
authors.lastname: Matsumoto
authors.forename: T
authors.initials: T
authors.lastname: Sagawa
authors.forename: S
authors.initials: S
authors.lastname: Fujimoto
authors.forename: K
authors.initials: K
authors.lastname: Kobayashi
mesh_terms: D000653:Amniotic Fluid / Q000378:metabolism*; D002585:Cesarean Section; D005260:Female; D005312:Fetal Blood / Q000378:metabolism*; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007743:Labor, Obstetric; D008297:Male; D011247:Pregnancy; D011510:Proteolipids / Q000097:blood* / Q000378:metabolism; D037662:Pulmonary Surfactant-Associated Protein A; D037661:Pulmonary Surfactant-Associated Proteins; D011663:Pulmonary Surfactants / Q000097:blood* / Q000378:metabolism; D012016:Reference Values
chemical_list: D011510:Proteolipids; D037662:Pulmonary Surfactant-Associated Protein A; D037661:Pulmonary Surfactant-Associated Proteins; D011663:Pulmonary Surfactants