Document Detail


Importance of the malate-aspartate shuttle for the reoxidation of glycolytically produced NADH and for cell aggregation in porcine blood platelets.
MedLine Citation:
PMID:  3687299     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Malate dehydrogenase (EC 1.1.1.37) and aspartate aminotransferase (EC 2.6.1.1) are present in porcine blood platelets in both mitochondria and the cytosol. The latter enzyme is inhibited in a typical way by aminooxycompounds and cycloserine. Blocking of aminotransferase or inhibition of the mitochondrial dicarboxylate carrier by butylmalonate stimulates lactate production by intact platelets and inhibits their aggregation induced by ADP or collagen. These results indicate that the reoxidation of cytosolic NADH via the malate-aspartate shuttle is important for covering the energy demand of platelets necessary for their stimulation.
Authors:
M Tomasiak
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Acta biochimica Polonica     Volume:  34     ISSN:  0001-527X     ISO Abbreviation:  Acta Biochim. Pol.     Publication Date:  1987  
Date Detail:
Created Date:  1988-01-21     Completed Date:  1988-01-21     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  14520300R     Medline TA:  Acta Biochim Pol     Country:  POLAND    
Other Details:
Languages:  eng     Pagination:  269-84     Citation Subset:  IM    
Affiliation:
Department of Biochemistry, Medical Academy, Bialystok, Poland.
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MeSH Terms
Descriptor/Qualifier:
Animals
Aspartate Aminotransferases / antagonists & inhibitors,  blood
Aspartic Acid / blood*
Blood Platelets / metabolism*
Cytosol / enzymology
Glycolysis*
Malate Dehydrogenase / blood
Malates / blood*
Mitochondria / enzymology
NAD / blood*
Oxidation-Reduction
Oxygen Consumption / drug effects
Platelet Aggregation*
Swine
Uncoupling Agents / pharmacology
Chemical
Reg. No./Substance:
0/Malates; 0/Uncoupling Agents; 53-84-9/NAD; 56-84-8/Aspartic Acid; 6915-15-7/malic acid; EC 1.1.1.37/Malate Dehydrogenase; EC 2.6.1.1/Aspartate Aminotransferases

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


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