Adenylate Energy Charge As A Tool For Evaluating Sub-Lethal Toxicity

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contributor.author Picado, A. en_US
contributor.author Le Gal, Y. en_US
date.accessioned 2009-11-25T15:31:08Z en_US
date.available 2009-11-25T15:31:08Z en_US
date.issued 1999 en_US
identifier.citation Qatar University Science Journal, 1999, Vol. 19, Pages 36-45. en_US
identifier.uri http://hdl.handle.net/10576/10244 en_US
description.abstract Adenylate energy charge (AEC) is directly related to the cellular concentrations of the three adenylates nucleotides ATP, ADP and AMP. This biochemical index reaches high values (0.9) under optimal conditions but drops rapidly in the presence of stressing agents. In vertebrates, AEC is strongly regulated and maintained within narrow limits. In contrast, in invertebrates, AEC displays a wide range of values according to the importance of the internal stress or to the variations in the external environment of the organisms (natural or anthropogenic). This work concerns the use of adenine nucleotides concentrations, ATP/ADP ratios and AEC as physiological markers in different species. Our results show that AEC is modified in animals submitted to experimental pollution or sampled in polluted areas. Results of zinc contamination in adults of clam Ruditapes decussatus show that after one month exposure, AEC values change significantly. The use of AEC in the bivalve Ruditapes decussatus for in situ evaluation allowed a classification among different sampling sites in what concerns environmental quality. In this way, AEC proved to be an accurate biochemical and physiological marker in monitoring the health of organisms exposed to pollution and can be used as a complementary tool in impact and environmental management studies. en_US
language.iso en en_US
publisher Qatar University en_US
subject Marine Science en_US
title Adenylate Energy Charge As A Tool For Evaluating Sub-Lethal Toxicity en_US
type Article en_US


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