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Keywords: ornithine-urea cycle
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Journal Articles
J Exp Biol (2016) 219 (20): 3218–3226.
Published: 15 October 2016
... ). The dogfish shark (Squalus acanthias) increases both hepatic and extrahepatic ornithine urea cycle enzyme activities for nitrogen conservation after feeding . Physiol. Biochem. Zool.   79 , 602 - 613 . 10.1086/501060 Kajimura , M. , Walsh , P. J. and Wood , C. M. ( 2008 ). The spiny...
Includes: Supplementary data
Journal Articles
J Exp Biol (2015) 218 (2): 238–248.
Published: 15 January 2015
.... ( 2006 ). The dogfish shark (Squalus acanthias) increases both hepatic and extrahepatic ornithine urea cycle enzyme activities for nitrogen conservation after feeding . Physiol. Biochem. Zool.   79 , 602 - 613 . Kajimura   M. , Walsh   P. J. , Wood   C. M. ( 2008 ). The dogfish shark...
Journal Articles
J Exp Biol (2013) 216 (9): 1650–1657.
Published: 1 May 2013
... to significant decreases in the activity of some ornithineurea cycle enzymes (argininosuccinate synthetase/argininosuccinate lyase and arginase) from the liver of P. sinensis . As a decrease in urea synthesis occurred without the accumulation of ammonia and total free amino acids, it can be deduced that ammonia...
Includes: Supplementary data
Journal Articles
J Exp Biol (2004) 207 (17): 3015–3023.
Published: 1 August 2004
... ammonia ammonia excretion feeding glutamine mudskipper nitrogen metabolism ornithine-urea cycle Periophthalmodon schlosseri urea When confronted with aerial exposure, tropical air-breathing fishes would be expected to have difficulties excreting ammonia, resulting in an accumulation...
Journal Articles
J Exp Biol (2004) 207 (12): 2033–2042.
Published: 15 May 2004
... ( Caenorhabditis elegans and Drosophila ) have only one type of arginase, whose function is unrelated to the ornithineurea cycle (OUC; Samson, 2000 ). There are two forms of arginase in terrestrial ureotelic vertebrates encoded by separate genes ( Spector et al., 1985 ; Grody et al., 1989 ). Arginase Type I...
Journal Articles
J Exp Biol (2004) 207 (12): 2011–2020.
Published: 15 May 2004
... was excreted in pulsatile events that accounted for 62.0±5.9% of total urea-N excreted. Excretion rates of urea-N and ammonia-N were 1.018±0.084 μmol N h –1 g –1 and 0.235±0.095 μmol N h –1 g –1 ,respectively. Field-collected eggs, larvae and juveniles expressed significant levels of the ornithineurea cycle...
Journal Articles
J Exp Biol (2003) 206 (20): 3625–3633.
Published: 15 October 2003
...Yuen K. Ip; Wai L. Tam; Wai P. Wong; Ai M. Loong; Kum C. Hiong; James S. Ballantyne; Shit F. Chew SUMMARY The white-edge whip tail ray Himantura signifer inhabits a freshwater environment but has retained the capability to synthesize urea de novo through the arginine-ornithine-urea cycle (OUC...
Journal Articles
J Exp Biol (2003) 206 (20): 3615–3624.
Published: 15 October 2003
... endogenous ammonia production. Simultaneously, there were significant increases in urea levels in the muscle (8-fold), liver (10.5-fold) and plasma (12.6-fold) of specimens exposed to air for 6 days. Furthermore, there was an increase in the hepatic ornithine-urea cycle (OUC) capacity, with significant...
Journal Articles
J Exp Biol (2003) 206 (17): 2931–2940.
Published: 1 September 2003
... the South American freshwater stingray Potamotrygon motoro, H. signifer has a functional ornithine-urea cycle (OUC) in the liver, with hepatic carbamoylphosphate synthetase III (CPS III) and glutamine synthetase (GS) activities lower than those of the marine blue-spotted fan tail ray Taeniura lymma . More...
Journal Articles
J Exp Biol (2003) 206 (9): 1523–1533.
Published: 1 May 2003
... mechanism in the gill of the toadfish. glutamine synthetase toadfish ureotely ornithineurea cycle ammonia detoxification Opsanus beta ammonia excretion gill ORF UTR * Author for correspondence (e-mail: pwalsh@rsmas.miami.edu ) 21 1 2003 © The Company of Biologists...
Journal Articles
J Exp Biol (2001) 204 (12): 2155–2165.
Published: 15 June 2001
... of this teleost; uricolysis, argininolysis and the ornithineurea cycle (OUC). Uricase, allantoinase, allantoicase and ureidoglycollate lyase of the uricolytic pathway were expressed in all early life stages and in adult liver of C. gariepinus . Uricase activity increased in starved larvae compared with yolk-sac...