Document Detail


Perinatal changes in glycolytic function in response to hypoxia in the incubated or perfused rat heart.
MedLine Citation:
PMID:  150293     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Glycolysis was assessed in the rat heart during the perinatal period: in the fetus of 16.5 days postcoitum (dpc) and 21.5 dpc (term = 22 dpc) and in the newborn of 1 day postpartum (dpp) and 7 dpp. Glucose uptake, lactate production and glucose incorporation into glycogen were much higher in the fetal than in the newborn heart. Measurements were made of tissue contents of high energy phosphate compounds, lactate and hexose phosphates. Unchanged contents of glucose-6-phosphate and fructose-6-phosphate during hypoxia in spite of an increased flux through the enzyme phosphofructokinase (PFK) suggest that PFK has a regulatory role in the glycolysis as early as 16.5 dpc. The isolated fetal heart was more resistant to hypoxia than the newborn heart: glucose uptake and lactate production were much higher and high energy phosphate compounds and glycogen were better maintained in the fetal heart.
Authors:
J A Hoerter; L H Opie
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Biology of the neonate     Volume:  33     ISSN:  0006-3126     ISO Abbreviation:  Biol. Neonate     Publication Date:  1978  
Date Detail:
Created Date:  1978-10-27     Completed Date:  1978-10-27     Revised Date:  2005-11-17    
Medline Journal Info:
Nlm Unique ID:  0247551     Medline TA:  Biol Neonate     Country:  SWITZERLAND    
Other Details:
Languages:  eng     Pagination:  144-61     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Adenine Nucleotides / metabolism
Animals
Animals, Newborn
Anoxia / enzymology,  metabolism*
Female
Fetal Heart / enzymology,  metabolism*
Fetal Hypoxia / enzymology,  metabolism*
Glucose / metabolism
Glycolysis*
Hexosephosphates / metabolism
Lactates / metabolism
Myocardium / enzymology,  metabolism*
Perfusion
Phosphates / metabolism
Phosphofructokinase-1 / metabolism
Pregnancy
Rats
Chemical
Reg. No./Substance:
0/Adenine Nucleotides; 0/Hexosephosphates; 0/Lactates; 0/Phosphates; 50-99-7/Glucose; EC 2.7.1.11/Phosphofructokinase-1

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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