... physiological evidence in other species. e-mail: pphwang@gate.sinica.edu.tw 21 1 2009 2009 mitochondria-rich cells embryo ion regulation acid–base regulation Homeostasis of body fluids is vital for vertebrates including fish. Compared with terrestrial vertebrates, fish face...

...Guy S. Hawkings; Fernando Galvez; Greg G. Goss SUMMARY Mitochondria-rich cells (MR cells) of the gills of rainbow trout undergo changes in relative distribution and biochemical function during acclimation to partial-strength (10‰) and full-strength (30‰) seawater. In isolated total gill cells, Na...

... cells function in branchial Na + uptake in freshwater fish. * Author for correspondence (e-mail: sdreid@ouc.bc.ca ) 28 10 2002 © The Company of Biologists Limited 2003 2003 mitochondria-rich cells MR chloride cells CC pavement cells PVC peanut lectin agglutinin PNA...

... be inactive. It may also explain why animal plasma membrane H + V-ATPases are commonly found in ‘mitochondria-rich’ cells. We suggest that the high oxygen affinity of cytochrome oxidase leads to localized reducing conditions near mitochondria which would allow H + V-ATPases to remain active in plasma...

... cell permeabilization gill epithelial cells H + -ATPase ion transport mitochondria-rich cells Na + /K + -ATPase mudsucker Gillichthys mirabilis Gill epithelial cells of teleosts are responsible for active uptake and secretion of Na + , Cl − and other ions ( Evans, 1993 ). Two cell...

... trout pavement epithelial cells mitochondria-rich cells intracellular concentration X-ray microanalysis It is well-known that freshwater fish take up ions, particularly Na + and Cl − , across the gills against a strong concentration gradient to maintain the ionic concentration of their body...

... energized by the H + pump when Na + channels in P cells are closed by an acid load. * Present address: Department of Physiology, University College Cork, Ireland. © 1992 by Company of Biologists 1992 mitochondria-rich cells principal cells H + secretion Na + absorption Na...

...’) contributes to Ca 2+ but not to NaCl balance in freshwater trout. * Permanent address: Department of Biology, McMaster University, Hamilton, Ontario, Canada L8S 4K1. 13 01 1992 © 1992 by Company of Biologists 1992 trout fresh water chloride cells mitochondria-rich cells...