Tatlısu Istakozu (Astacus leptodactylus, Esch. 1823)’nun Arginaz Aktivitesi ve Nitrik Oksit Seviyesi Üzerine Rasyon Antioksidanlarının Etkisi

Barim, Özden; Erişir, Mine

doi:10.9775/kvfd.2009.098-a

Cited by 1 publication

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“…Arginase, a binuclear manganese metalloenzyme in urea, catalyses the hydrolysis of l ‐arginine into urea and l ‐ornithine, and the resulting urea is excreted from the organism (Li et al., 2022 ). The scope of arginase enzyme activity encompasses both ureotelic and non‐ureotelic organisms (Barim & Erisir, 2009 ). In non‐ureotelic organisms, arginase plays a role not only in the urea cycle but also in protein metabolism, creatinine synthesis, nitric oxide generation and polyamine biosynthesis (Jenkinson et al., 1996 ).…”

Section: Discussionmentioning

confidence: 99%

Effects of swimming activity and feed restriction on antioxidant and digestive enzymes in juvenile rainbow trout: Implications for nutritional and exercise strategies in aquaculture

Tunçelli,

Ertik,

Bayrak

et al. 2024

Veterinary Medicine & Sci

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BackgroundIn this study, we investigated the effects of swimming activity and feed restriction on digestion and antioxidant enzyme activities in juvenile rainbow trout (average body weight of 26.54 ± 0.36 g).MethodsThe stomach, liver and kidney tissues were obtained from four distinct groups: the static water group (fish were kept in static water and fed to satiation), the feeding restricted group (fish were kept in static water with a 25% feed restriction), the swimming exercised group (fish were forced to swimming at a flow rate of 1 Body Length per second (BL/s)) and the swimming exercised‐feed restricted group (subjected to swimming exercise at a 1 BL/s flow rate along with a 25% feed restriction). We determined the levels of glutathione, lipid peroxidation and the activities of catalase, superoxide dismutase, glutathione peroxidase, glutathione reductase, glucose‐6‐phosphate dehydrogenase and lactate dehydrogenase, as well as the presence of reactive oxygen species in the tissues obtained from the fish. Additionally, the activities of pepsin, protease, lipase and arginase in these tissues were measured.ResultsSwimming activity and feed restriction showed different effects on the enzyme activities of the fish in the experimental groups.ConclusionIt can be concluded that proper nutrition and exercise positively influence the antioxidant system and enzyme activities in fish, reducing the formation of free radicals. This situation is likely to contribute to the fish's development.

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Section: Discussionmentioning

confidence: 99%