Section 16
Chapter 15,239

Changes in the activities of selected enzymes of intermediary metabolism in the pyloric caeca and ovaries of asterias rubens during the annual reproductive cycle

van der Plas, A.J.; Oudejans, R.C.

Comparative Biochemistry and Physiology. B Comparative Biochemistry 71(3): 379-385


ISSN/ISBN: 0305-0491
PMID: 6802560
DOI: 10.1016/0305-0491(82)90398-4
Accession: 015238846

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Activities of several enzymes of glycolysis, glycerolphosphate cycle, TCA[tricarboxylic acid cycle]-cycle, .beta.-oxidation and pentose phosphate cycle were determined in pyloric ceca and ovaries of A. rubens during the reproductive cycle. In the ovaries activities of CS [citrate synthase] and LDH [lactate dehydrogenase] were significantly decreased during ovarian stages 3 and 4, and those of GDH [glycerol dehydrogenase] and GAPDH [glyceraldehyde-3-phosphate dehydrogenase] during stage 3 and 4, respectively. In the pyloric ceca activities of GAPDH and LDH were lower in stage 4 and that of GDH in stage 3, whereas those of G6PDH and HOAD [hydroxyacyl-CoA-dehydrogenase] were increased in stage 3. Changes observed in enzyme activities are discussed in relation to the reproductive cycle and to the multiple function of the pyloric ceca.

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