Document Detail


The effects of pyrene exposure on exercise performance, muscle contraction, and mitochondrial O(2) consumption in the leopard frog (Rana pipiens).
MedLine Citation:
PMID:  18393064     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The present study exposed frogs to the PAH pyrene and measured exercise performance, muscle contractile ability, mitochondrial O(2) consumption, and membrane potential. Leopard frogs, Rana pipiens, were exposed for seven days in control or pyrene saturated water aquaria. Frogs were randomly placed into one of four groups: (i) pyrene-exposed exercised, (ii) control, exercised, (iii) pyrene-exposed, non-exercised, and (iv) control, non-exercised. Following the acute exposure, exercise duration, muscle contractile ability, blood gases and pH, glycogen levels, crossbridge formation and contractile length, and mitochondrial respiration were measured. The data revealed that pyrene exposure produced many adverse effects in Leopard frogs including significant reductions in exercise performance, muscle contractile ability, and alterations to muscle mitochondrial O(2) consumption and membrane potential. These data suggest that PAH exposure may limit survival for frogs in the wild by limiting foraging, mating, and predator avoidance behaviors.
Authors:
Erich K Stabenau; Anna Sasser; Crystal Schulte
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering     Volume:  43     ISSN:  1093-4529     ISO Abbreviation:  J Environ Sci Health A Tox Hazard Subst Environ Eng     Publication Date:  2008 May 
Date Detail:
Created Date:  2008-04-08     Completed Date:  2008-09-22     Revised Date:  2009-08-14    
Medline Journal Info:
Nlm Unique ID:  9812551     Medline TA:  J Environ Sci Health A Tox Hazard Subst Environ Eng     Country:  United States    
Other Details:
Languages:  eng     Pagination:  576-83     Citation Subset:  IM    
Affiliation:
Department of Biology, Bradley University, Peoria, Illinois 61625, USA. eks@bradley.edu
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MeSH Terms
Descriptor/Qualifier:
Animals
Blood Gas Analysis
Hydrogen-Ion Concentration
Membrane Potentials
Mitochondria / drug effects*,  metabolism
Muscle Contraction / drug effects*
Oxygen / metabolism*
Physical Conditioning, Animal*
Pyrenes / toxicity*
Rana pipiens
Chemical
Reg. No./Substance:
0/Pyrenes; 129-00-0/pyrene; 7782-44-7/Oxygen

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


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