... transport, seawater transfer, smoltification, urocortin, water transport Introduction The capacity for euryhaline fishes to survive in both fresh water (FW) and seawater (SW) relies on the flexibility of their osmoregulatory organs, including the gills, kidney, and intestine (Evans et al., 2005; Grosell...

..., reduced rates of fluid, K + and Na + secretion by the Malpighian tubules, and reduced Cl − concentrations in the hemolymph. These findings indicate that AaAQP5 participates in transcellular water transport across the Malpighian tubules of larval A . aegypti where global AaAQP5 expression is important...

... were analysed in the intestine but none showed a consistent response to salinity, suggesting that water transport is not regulated at this level. In contrast, mRNA of the Na + ,K + ,2Cl − -cotransporter type-2 strongly increased in the intestine in SW compared with FW fish. Using custom-made antibodies...

... polymorphisms are beginning to be explored. Perhaps of greatest translational potential is aquaporin-based therapeutics. Information largely from aquaporin knockout mice has implicated key roles of aquaporin-facilitated water transport in transepithelial fluid transport (urinary concentrating, gland fluid...

... to the presence of aquaporins (AQPs), the ubiquitous water transport proteins. There are 13 known human AQPs, and they are tissue and even membrane specific. It is now clear that the number and type of AQPs within a membrane are the major determinants of its water transport capacity. There are many gene homologs...

... ). Functional significance of cell volume regulatory mechanisms. Physiol. Rev. 78 , 247 -306. Lauf, P. K. ( 1982 ). Evidence for chloride dependent potassium and water transport induced by hyposmotic stress in erythrocytes of the marine teleost, Opsanus tau. J. Comp. Physiol. 146 , 9 -16...

... is discussed. 01 02 1990 © 1990 by Company of Biologists 1990 HCO 3 − Na + /K + /Cl − cotransport pH water transport eel intestine The seawater eel intestine is typical of epithelia that absorb NaCl via a Na + /K + /Cl − cotransport system ( Ando and Utida, 1986...

...Masaaki Ando ABSTRACT To elucidate how intracellular L-alanine enhances water transport across the seawater eel intestine, effects of various metabolic inhibitors were examined. The L-alanine-induced water flux was inhibited by amino-oxyacetate, an inhibitor of aminotransferase. After blocking...

... by 5 mmol l −1 L-alanine, but not by D-glucose, L-valine or L-glycine, indicating a specific action of L-alanine. 10 12 1985 © 1986 by Company of Biologists 1986 water transport alanine eel intestine. It is well known that marine teleosts ingest sea water and absorb water...

... ). The results are expressed as μ mol of water transferred in relation to μ mol of K + transported, evaluated from the graphical picture given by the recorder during the experimental period of 1 h. From Table 1 it can be seen that the ratio between water transport and potassium transport was dependent...