Document Detail

Hepatopancreas gluconeogenesis during hyposmotic stress in crabs Chasmagnathus granulata maintained on high-protein or carbohydrate-rich diets.
MedLine Citation:
PMID:  11126768     Owner:  NLM     Status:  MEDLINE    
The incorporation of [14C]-alanine or [14C]-lactate into glucose was measured in hepatopancreas fractions from Chasmagnathus granulata crabs adapted to a high protein or a carbohydrate-rich diet and submitted or not (control group) to hyposmotic stress. Gluconeogenic capacity and phosphoenolpyruvate carboxykinase (PEPCK) activity increased during acclimation to a dilute medium in C. granulata hepatopancreas. In intact animals, high hemolymph urea levels occurred for the high-protein regimen and for crabs fed both diets and submitted to hyposmotic stress. It could be that the amino acids released during hyposmotic stress are deaminated in the hepatopancreas, and that the carbon chains are used as substrate for gluconeogenesis. Hepatopancreas gluconeogenesis seems to be one of the pathways implicated in the metabolic adjustment of the amino acid pool during hyposmotic stress in C. granulata.
G T Oliveira; R S da Silva
Related Documents :
17206848 - Protein architecture chronology deduced from structures of amino acid synthases.
23497138 - Low serum eicosapentaenoic acid / arachidonic acid ratio in male subjects with visceral...
15585568 - Gut protein uptake and mechanisms of meal-induced cortisol release.
1056008 - Sidechain torsional potentials and motion of amino acids in porteins: bovine pancreatic...
4081638 - Bile acid malabsorption in patients with an ileum reservoir with a long efferent leg to...
20091068 - Age-related changes of muscle and plasma amino acids in healthy children.
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Comparative biochemistry and physiology. Part B, Biochemistry & molecular biology     Volume:  127     ISSN:  1096-4959     ISO Abbreviation:  Comp. Biochem. Physiol. B, Biochem. Mol. Biol.     Publication Date:  2000 Nov 
Date Detail:
Created Date:  2000-12-20     Completed Date:  2001-03-01     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9516061     Medline TA:  Comp Biochem Physiol B Biochem Mol Biol     Country:  England    
Other Details:
Languages:  eng     Pagination:  375-81     Citation Subset:  IM    
Department of Physiology, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, ICBS, Porto Alegre, Brazil.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Alanine / metabolism
Brachyura / metabolism*
Dietary Carbohydrates / metabolism*
Dietary Proteins / metabolism*
Digestive System / metabolism*
Glucose / metabolism*
L-Lactate Dehydrogenase / metabolism
Lactic Acid / metabolism
Osmotic Pressure
Phosphoenolpyruvate Carboxykinase (ATP) / metabolism
Reg. No./Substance:
0/Dietary Carbohydrates; 0/Dietary Proteins; 50-21-5/Lactic Acid; 50-99-7/Glucose; 56-41-7/Alanine; EC Dehydrogenase; EC Carboxykinase (ATP)

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

Previous Document:  Distribution of rhodanese in different parts of the urogenital systems of sheep at pre- and post-nat...
Next Document:  Sesonal changes in acid glycosidases from gander testes.