Cellular and Molecular Approaches to Fish Ionic Regulation by Chris M. Wood PDF

By Chris M. Wood

Many physiological approaches are regulated by means of the stream of ions into and out of organs, tissues, and cells. in past times decade, quite a few new strategies and methods have contributed to a deeper realizing of the myriad affects ions have at the functionality and constitution of organisms. From breathing and excretion to neurological keep watch over and metabolic processing, ions and their law occupy a crucial function in body structure of fish in addition to different organisms. Key gains * finished replace of ionic law in fish * specializes in big variety of organ platforms and the impact of ions on organ method functionality * Contributions from a world staff

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Table I Summary of Transepithelial Potential (V,) and Transepithelial Resistance ( R , ) Values ~ ~ ~ vta Species ~ ~~~~ 4 Reference Esophagus Winter flounder, Pseudopleuronectes americanus Seawater-adapted With seawater on mucosal surface 90 0 cm2 92 0 cm2 0 mV - 5 mV I 1 AnteriorIMiddle Intestine Winter flounder, Pseudopleuronectes americanus Seawater-adapted Seawater-adapted with AIFC 15% seawater-adapted - 1 to - 6 mV -20 mV N R ~ 35-80 cm2 67 0 cm2 46 R cm2 2-15 6 3 (continues) 31 2. ELECTROPHYSIOLOGY O F INTESTINAL CELLS Table I (continued) ~~~ Species European flounder, Platichthys flesus Seawater-adapted Freshwater-adapted Japanese eel, Anguilla japonica Seawater-adapted Freshwater-adapted Goby, Gillichthys mirabilis Seawater-adapted Coho salmon, Oncorhynchus kisutch Seawater-adapted Freshwater-adapted, unfed Freshwater-adapted, fed VIa Rt Reference -2 mV - I mV 32-71 R cm2 62 R cm2 16, 17 18 - 1 to - 10 mV 0 to - 3 mV 83-84 R cm2 94-105 R cm2 19-22 19 - I mV 52 R cm2 23 - 1 mV 76 R cm2 41 n c m 2 102 cm2 24 24 24 + I to + 2 m V + 1 to + 2 mV Posterior Intestine Winter flounder, Pseudopleuronectes americanus Seawater-adapted Japanese eel, Anguilla japonica Seawater-adapted Freshwater-adapted Goby, Gillichthys mirabilis Seawater-adapted 5% seawater-adapted Coho salmon, Oncorhynchus kisutch Seawater-adapted Freshwater-adapted, unfed Freshwater-adapted, fed -6 mV 91 R cm2 25 - 3 to - 10 mV 0 to - 3 mV 36-61 R cm2 76-88 R cm2 20, 26, 27 26, 27 - 5 to - 9 mV - 10 mV 140-400 R cm2 160-267 R cm2 23, 28-33 23, 31 - I mV + I to + 2 m V + I to + 2 mV I I3 R cm2 83Rcm2 181 0,cm2 24 24 24 " All V, are reported as the serosal side with respect to mucosal side ground.

Pjiiegers Arch. 409, 122-125. Goss, G. , Perry, S. , Wood, C. , and Laurent, P. L. (1992a). Mechanisms of ion and acid-base regulation at the gills of freshwater fish. J . Exp. Zool. 263, 143-159. Goss, G. , and Perry, S. F. (1992b). Evidence for a morphological component in acid-base regulation during environmental hypercapnia in brown bullhead (Ictalurus nebulosus). Cell Tissue Res. 268, 539-552. Gray, M. , Greenwell, J. , and Argent, B. E. (1989). Two types of chloride channel on duct cells cultured from human fetal pancreas.

1992b). Evidence for a morphological component in acid-base regulation during environmental hypercapnia in brown bullhead (Ictalurus nebulosus). Cell Tissue Res. 268, 539-552. Gray, M. , Greenwell, J. , and Argent, B. E. (1989). Two types of chloride channel on duct cells cultured from human fetal pancreas. Am. J . Physiol. 257, C240-C251. , and Gogelein, H. (1987). Pjiiegers Arch. 409,114-121. , and Lahlou, B. (1987). Basal and stimulated adenylate cyclase activity in the gill epithelium of the rainbow trout.

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