Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
9
pubmed:dateCreated
1999-1-5
pubmed:abstractText
Leptin can be considered as a peripheral signal which informs the centers about the mass of energy stores. Studies done on the human adult population have demonstrated that degree of adiposity and insulin levels play a major role as determinants of leptin circulating levels. The aim of this study was to evaluate which factors may influence leptin levels at birth. We examined the role played by baby size and by the metabolic environment the fetus was exposed to during pregnancy. We considered 85 newborns from normal (n = 60), gestational (GDM, n = 17) and pregestational (IDDM = 8) diabetes mellitus mothers. At delivery, blood was taken from the umbilical cord vein. Babies from normal and GDM mothers were subdivided into AGA (appropriate for gestational age) and LGA (large for gestational age). There was no difference in leptin levels between babies from normal or GDM mothers belonging to the same weight category, but leptin levels were always higher in LGA than in AGA newborns, and highly correlated with birth weight (r = 0.34, P = 0.001). Moreover, IDDM mothers gave birth to newborns with significantly higher levels of leptin and insulin when compared with normal and GDM mothers. Diabetes of both GDM and IDDM mothers was clinically well controlled (HbA1c was 4.0 and 7.2, respectively). The correlation between leptin and insulin was significant only when newborns from IDDM mothers were included in the regression analysis (r = 0.39, P = 0.0002). Our results suggest that degree of adiposity is one of the main regulators of leptin concentration in the human newborn and that babies exposed to an altered, though clinically controlled, metabolic environment, as in IDDM mothers, have increased levels of leptin.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0018-5043
pubmed:author
pubmed:issnType
Print
pubmed:volume
30
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
575-80
pubmed:dateRevised
2011-11-17
pubmed:meshHeading
pubmed-meshheading:9808327-Adipose Tissue, pubmed-meshheading:9808327-Adult, pubmed-meshheading:9808327-Birth Weight, pubmed-meshheading:9808327-Blood Glucose, pubmed-meshheading:9808327-C-Peptide, pubmed-meshheading:9808327-Diabetes, Gestational, pubmed-meshheading:9808327-Diabetes Mellitus, Type 1, pubmed-meshheading:9808327-Female, pubmed-meshheading:9808327-Hemoglobin A, Glycosylated, pubmed-meshheading:9808327-Humans, pubmed-meshheading:9808327-Infant, Newborn, pubmed-meshheading:9808327-Insulin, pubmed-meshheading:9808327-Insulin-Like Growth Factor Binding Protein 1, pubmed-meshheading:9808327-Insulin-Like Growth Factor I, pubmed-meshheading:9808327-Leptin, pubmed-meshheading:9808327-Multivariate Analysis, pubmed-meshheading:9808327-Pregnancy, pubmed-meshheading:9808327-Proteins, pubmed-meshheading:9808327-Regression Analysis, pubmed-meshheading:9808327-Testosterone
pubmed:year
1998
pubmed:articleTitle
Plasma leptin levels in newborns from normal and diabetic mothers.
pubmed:affiliation
Department of Metabolic Disease, University of Pisa, Italy.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't