PMID: 107639Nov 1, 1978

Amino acid composition and transaminase activity in fish tissues, in a medium containing Cyanophyceae

Ukrainskiĭ biokhimicheskiĭ zhurnal
A Ia MaliarevskaiaIu M Gupalo


The content of free amino acids, activity of aspartate and alanine transaminase, number of sulphydryl groups in fish tissues were studied as affected by lethal amounts (3.2 g/l) of blue-green algae. Blue-green algae have a certain affect on fishes not only by excreting biologically active substances in the process of vital activity and decay but also changing the gas regime of the medium (the oxygen content lowers, the amount of carbon dioxide increases). Under the algae effect the total content of free amino acids in the fish liver, intestine and muscles increases, mainly due to a rise in the content of glutamic acid with threonine and aspartic acid with serine. These changes are most essential in the liver, intestine and are less pronounced in the muscles. Under the effect of blue-green algae the activity of aspartate transaminase increases in the heart, brain and decreases in the intestine. The activity of alanine transaminase enhances in the heart, intestine and brain. The ration value for these enzymes changes significantly in the brain, liver, intestine, but does not differ from the control in the muscles.

Related Concepts

SGPT - Glutamate pyruvate transaminase
SGOT - Glutamate oxaloacetate transaminase

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