Tissue specificity of metabolism in the bivalve mollusc Anadara inaequivalvis Br. under conditions of experimental anoxia

• Published in: Journal of evolutionary biochemistry and physiology Vol. 45; no. 3; pp. 349 - 355
• Main Authors: Soldatov, A. A, Andreenko, T. I, Sysoeva, I. V, Sysoev, A. A
• Format: Journal Article
• Language: English
• Published: Dordrecht Dordrecht : SP MAIK Nauka/Interperiodica 01.06.2009; SP MAIK Nauka/Interperiodica; Springer Nature B.V
• Subjects: Animal Physiology; Biochemistry; Biomedical and Life Sciences; Comparative and Ontogenic Biochemistry; Evolutionary Biology; Life Sciences; Metabolism; Mollusks; Proteins; Br; metabolism; succinate thiokinase and fumarate reductase reactions; anoxia; mollusc
• ISSN: 0022-0930; 1608-3202
• DOI: 10.1134/S002209300903003X

Peculiarities of the course of metabolic processes in tissues of the bivalve mollusc Anadara inaequivalvis Br. were studied under conditions of experimental anoxia. In the absence of oxygen, in gill and foot the protein catabolism processes were found to be enhanced; this led to a decrease of the protein content and to an increase of the free amino acid and urea levels. Predominantly hydrolyzed were low molecular peptides, which was indicated by a decrease of the cathepsin D activity on the background of a rise of the γ-glutamyltranspeptidase activity. Anoxia was accompanied by enhancement of the succinate thiokinase and fumarate reductase reactions controlled by alanine and aspartate aminotransferases. This prevented accumulation of toxic lactate in tissues and allowed obtaining an additional macroerg resource. Metabolic processes in the mollusc hepatopancreas were oriented to production of amino acids.