Linked Life Data

6813103

Source:http://linkedlifedata.com/resource/pubmed/id/6813103

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1982-12-18
pubmed:abstractText
Maturation of the hypothalamic pituitary thyroid axis as reflected in cord serum thyroid hormone concentrations was assessed in premature and full term infants born between 26 and 43 weeks gestation. Measurements of thyroxine (T4), free T4 (FT4), thyrotropin (TSH) and thyroxine binding globulin (TBG) in cord sera were correlated with gestational age, sex and birthweight and compared to similar measurements in well two month old infants and adults. There were significant increases in T4, FT4, and TBG with increasing gestational age (GA) between 26 and 33-35 weeks (P less than 0.001). After 34 weeks, none of these parameters varied with GA. When the infants were separated on the basis of sex the linear regression curves describing the relationships between hormone and TBG concentrations and GA were not different from the curves in the total population. The mean FT4/TSH ratio increased significantly with age throughout gestation (P less than 0.01) and was significantly lower in cord blood samples than in blood samples from the 2-month-old infants or the adults. The results suggest that the set point for negative feedback control of TSH secretion at the pituitary level is changing between 26 weeks GA and 2 months of life. Thyroid gland sensitivity to TSH stimulation also appears to be increasing between 26 and 33 weeks GA.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0378-3782
pubmed:author
pubmed:issnType
Print
pubmed:volume
6
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
321-30
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1982
pubmed:articleTitle
Developmental changes in pituitary-thyroid function in the human fetus and newborn.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't