scholarly journals Supplementation of arginine, ornithine and citrulline in rainbow trout (Oncorhynchus mykiss): Effects on growth, amino acid levels in plasma and gene expression responses in liver tissue

2020 ◽  
Vol 241 ◽  
pp. 110632 ◽  
Author(s):  
T.C. Clark ◽  
J. Tinsley ◽  
T. Sigholt ◽  
D.J. Macqueen ◽  
S.A.M. Martin
Keyword(s):  
Gene Expression ◽  
Rainbow Trout ◽  
Amino Acid ◽  
Oncorhynchus Mykiss ◽  
Liver Tissue ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Amino Acid Levels

scholarly journals Ammonia detoxification and localization of urea cycle enzyme activity in embryos of the rainbow trout (Oncorhynchus mykiss) in relation to early tolerance to high environmental ammonia levels

2001 ◽  
Vol 204 (12) ◽  
pp. 2145-2154 ◽  
Author(s):  
Shelby Louise Steele ◽  
Terry David Chadwick ◽  
Patricia Anne Wright
Keyword(s):  
Rainbow Trout ◽  
Amino Acid ◽  
Oncorhynchus Mykiss ◽  
Urea Cycle ◽  
Total Amino Acid ◽  
Cycle Enzyme ◽  
Embryonic Tissues ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Amino Acid Levels ◽  
Urea Cycle Enzyme

SUMMARY The present study investigated the role of ammonia as a trigger for hatching, mechanisms of ammonia detoxification and the localization of urea cycle enzymes in the early life stages of freshwater rainbow trout (Oncorhynchus mykiss). The key urea cycle enzyme carbamoyl phosphate synthetase III was found exclusively in the embryonic body (non-hepatic tissues); related enzymes were distributed between the liver and embryonic body. ‘Eyed-up’ trout embryos were exposed either acutely (2h) to 10mmoll−1 NH4Cl or chronically (4 days) to 0.2mmoll−1 NH4Cl. Time to hatching was not affected by either acute or chronic NH4Cl exposure. Urea levels, but not ammonia levels in the embryonic tissues, were significantly higher than in controls after both acute and chronic NH4Cl exposure, whereas there were no significant changes in urea cycle enzyme activities. Total amino acid levels in the embryonic tissues were unaltered by chronic ammonia exposure, but levels of most individual amino acids and total amino acid levels in the yolk were significantly lower (by 34–58%) than in non-exposed controls. The data indicate that trout embryos have an efficient system to prevent ammonia accumulation in embryonic tissue, by conversion of ammonia to urea in embryonic tissues and through elevation of ammonia levels in the yolk.

Plasma amino acid levels in rainbow trout (Oncorhynchus mykiss)

1995 ◽  
Vol 11 (3-4) ◽  
pp. 309-316 ◽  
Author(s):  
Annette Schuhmacher ◽  
J. Schön ◽  
M. Goldberg ◽  
J. M. Gropp
Keyword(s):  
Rainbow Trout ◽  
Amino Acid ◽  
Oncorhynchus Mykiss ◽  
Plasma Amino Acid ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Amino Acid Levels

cDNA and amino acid sequences of rainbow trout (Oncorhynchus mykiss) lysozymes and their implications for the evolution of lysozyme and lactalbumin

1991 ◽  
Vol 32 (2) ◽  
pp. 187-198 ◽  
Author(s):  
André Dautigny ◽  
Ellen M. Prager ◽  
Danièle Pham-Dinh ◽  
Jacqueline Jollès ◽  
Farzad Pakdel ◽  
...  
Keyword(s):  
Rainbow Trout ◽  
Amino Acid ◽  
Oncorhynchus Mykiss ◽  
Amino Acid Sequences ◽  
Rainbow Trout Oncorhynchus Mykiss

Effects of high-soy diet on S100 gene expression in liver and intestine of rainbow trout (Oncorhynchus mykiss)

2019 ◽  
Vol 86 ◽  
pp. 764-771 ◽  
Author(s):  
Patrick C. Blaufuss ◽  
T. Gibson Gaylord ◽  
Wendy M. Sealey ◽  
Madison S. Powell
Keyword(s):  
Gene Expression ◽  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
S100 Gene

scholarly journals The role of nitrosative and oxidative stress in rainbow trout (Oncorhynchus mykiss) liver tissue applied mercury chloride (HgCl2)

2021 ◽  
Vol 38 (3) ◽  
pp. 269-273
Author(s):  
Mehmet Reşit Taysı ◽  
Muammer Kırıcı ◽  
Mahinur Kırıcı ◽  
Hasan Ulusal ◽  
Bünyamin Söğüt ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Liver Tissue ◽  
Stress Index ◽  
Mercury Chloride ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Total Antioxidant ◽  
Ld50 Value

The aim of this study was to determine oxidative stress caused by mercury chloride (HgCl2) in rainbow trout (Oncorhynchus mykiss) liver tissue. For this purpose, the LD50 value of HgCl2 on rainbow trout was determined as 551 μg/L. In the study, 40 fish in four groups were exposed to 25% and 50% (138 and 276 µg/L) of the two subletal doses of HgCl2 for 2 and 7 days, with 10 fish (n=10) in each group. To determine oxidative stress; peroxynitrite (ONOO−), total oxidant level (TOS), total antioxidant level (TAS), oxidative stress index (OSI) and malondialdehyde (MDA) were analyzed. In the study, it was observed that the differences between the groups in terms of ONOO−, TOS, TAS and OSI levels in the liver tissues was significant (P<0.05), however, this difference was not significant (P>0.05) in terms of MDA values. As a result, it can be concluded that HgCl2 increases ONOO−, TOS, TAS, OSI and MDA levels in liver tissue and even small doses of mercury are toxic to fish.

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