... et al., 2005 ; Wright et al., 1995b ; Zimmer and Wood, 2016 ), probably as a result of the switch from endogenous to exogenous feeding, coupled to increases in arginase activity, discussed above, and urea transporter expression, discussed below. The site of J urea changes over development...

... pharyngeal movements were involved in urea excretion in P. sinensis . Urea excretion through the mouth was sensitive to phloretin inhibition, indicating the involvement of urea transporters (UTs). In addition, saliva samples collected from the buccopharyngeal surfaces of P. sinensis injected...

...Marvin H. Braun; Shelby L. Steele; Steve F. Perry SUMMARY While adult zebrafish, Danio rerio , possess ammonia and urea transporters (Rh and UT proteins, respectively) in a number of tissues, they are most heavily concentrated within the gills. UT has a diffuse expression pattern within Na + -K...

... urea transporter (UT) in the kidney of the dogfish Triakis scyllia . We isolated a cDNA encoding a UT that is homologous to the facilitative UT cloned from another dogfish species, Squalus acanthias . The Triakis UT mRNA is abundantly expressed in the kidney, while low levels of expression were...

[email protected] ) 21 7 2003 © The Company of Biologists Limited 2003 2003 amino acid ammonia arginase carbamoyl phosphate synthetase dipnoan lungfish glutamine synthetase ornithine-urea cycle Protopterus dolloi urea urea transporter The fish-tetrapod transition represents...

..., there is an effective decrease in permeability to urea resulting from the presence of specific secondarily active (Na + -coupled) urea transporters in gills and kidney and from the modification of lipid composition in the gills( Fines et al., 2001 ; Walsh and Smith, 2001 ). ammonia amino acid elasmobranch...