Produção Nacional
Changes in lactate dehydrogenase and malate dehydrogenase activities during hypoxia and after temperature acclimation in the armored fish, Rhinelepis strigosa (Siluriformes, Loricariidae)
2000; SciELO; Volume: 60; Issue: 2 Linguagem: Inglês
10.1590/s0034-71082000000200021
ISSN1806-9606
AutoresLucia Panepucci, MFGM Fernandes, J. R. SANCHES, Francisco Tadeu Rantin,
Tópico(s)Adipose Tissue and Metabolism
ResumoLactate (LDH) and malate dehydrogenase (MDH) of white skeletal muscle of fishes acclimated to 20, 25 and 30°C and thereafter submitted to hypoxia were studied in different substrate concentrations. Significant differences for LDH and MDH of white muscle enzyme activities are described here for the first time in Rhinelepis strigosa of fishes acclimated to 20°C and submitted to hypoxia for six hours. LDH presented a significant decrease in enzyme affinity for pyruvate in acute hypoxia, for fishes acclimated to 20°C and an increase for fishes acclimated to 30°C.
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