title: Fetal Environment and Glycosylation Status in Neonatal Cord Blood: A Comprehensive Mass Spectrometry-based Glycosylation Analysis.
abstract: Fetal environment is known to be a major predictive factor of type 2 diabetes and cardiovascular disease. However, associations of fetal environment and cord blood glycoforms are uncertain. In this study, we aimed to determine whether glycosylation status in neonatal cord blood is associated with perinatal outcomes reflecting a poor fetal environment.Thirty-six low birth weight (LBW) infants and 120 normal birth weight infants were recruited from a longitudinal birth cohort. We conducted a comprehensive cord blood N-glycan analysis using matrix-assisted laser-desorption/ionization time-of-flight mass spectrometry. Associations of N-glycans with perinatal outcomes, including LBW, small for gestational age, and levels of cord blood leptin and adiponectin, were evaluated using logistic or multiple regression. We also prospectively explored correlations between N-glycans and 6 or 18-month rapid weight gain (>0.67 SD score).A total of 35 N-glycans were detected (m/z value 1362.481-3865.407). Of these, abundance levels of G3414 (m/z value 3414.238) were inversely correlated with LBW and small for gestational age. Abundance levels of G1915 (m/z value 1914.698), G2744 (m/z value 2743.994), G3049 (m/z value 3049.105), and G3719 (m/z value 3719.349) were inversely related to LBW. The total N-glycan abundance levels were strongly positively correlated with levels of leptin and adiponectin in cord blood. In a prospective exploratory analysis, the 5 LBW-related N-glycans (G1915, G2744, G3049, G3414, and G3719) were all inversely associated with 6 or 18-month rapid weight gain. These N-glycans are structurally categorized into 2 different categories: fucosylated bi or tri-antennary N-glycans; and tri or tetra-antennary N-glycans without fucosylation.In conclusion, mass spectrometry-based cord blood glycosylation analysis shows that 5 types of N-glycans are potential predictors of a poor fetal environment.
authors.affiliation: From the Pharmaceuticals and Medical Devices Agency (RS), Tokyo; Department of Internal Medicine II (RS, TS), Hamamatsu University School of Medicine, Hamamatsu; Research Center for Child Mental Development (KJT, HM, NT), Hamamatsu University School of Medicine, Hamamatsu; Research Center for Child Mental Development (HM), University of Fukui, Fukui; Department of Obstetrics and Gynecology (HI, NK); Department of Clinical Pharmacology and Therapeutics (HW), Hamamatsu University School of Medicine, Hamamatsu; Graduate School of Life Science and Frontier Research Center for Post-Genome Science and Technology (TO, MT, S-IN), Hokkaido University, Sapporo; and Department of Laboratory Medicine (MM), Hamamatsu University School of Medicine, Hamamatsu, Japan.
authors.forename: Ryosuke
authors.initials: R
authors.lastname: Sato
authors.forename: Kenji J
authors.initials: KJ
authors.lastname: Tsuchiya
authors.forename: Hideo
authors.initials: H
authors.lastname: Matsuzaki
authors.forename: Nori
authors.initials: N
authors.lastname: Takei
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Itoh
authors.forename: Naohiro
authors.initials: N
authors.lastname: Kanayama
authors.forename: Takafumi
authors.initials: T
authors.lastname: Suda
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Watanabe
authors.forename: Tetsu
authors.initials: T
authors.lastname: Ohashi
authors.forename: Masakazu
authors.initials: M
authors.lastname: Tanaka
authors.forename: Shin-Ichiro
authors.initials: SI
authors.lastname: Nishimura
authors.forename: Masato
authors.initials: M
authors.lastname: Maekawa
mesh_terms: D052242:Adiponectin / Q000032:analysis / Q000378:metabolism*; D000328:Adult; D003430:Cross-Sectional Studies; D005260:Female; D005312:Fetal Blood / Q000737:chemistry / Q000378:metabolism*; D005500:Follow-Up Studies; D006031:Glycosylation; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D020738:Leptin / Q000032:analysis / Q000378:metabolism*; D013058:Mass Spectrometry; D011134:Polysaccharides / Q000032:analysis / Q000378:metabolism*; D011247:Pregnancy; D011446:Prospective Studies
chemical_list: C499918:ADIPOQ protein, human; D052242:Adiponectin; D020738:Leptin; D011134:Polysaccharides