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Keywords: transepithelial potentialClose
J Exp Biol (2015) 218 (14): 2152–2155.
Published: 1 July 2015
... in transepithelial potential (TEP) caused by hypoxia, which will influence branchial ionic fluxes. Using the euryhaline killifish, we show that acute hypoxia reduces the TEP across the gills by approximately 10 mV in animals acclimated to both freshwater (FW) and seawater (SW), with a higher P O 2 threshold...
Includes: Supplementary data
J Exp Biol (2015) 218 (2): 238–248.
Published: 15 January 2015
... directed) during HEA. Transepithelial potential increased by 30 mV, negating a parallel rise in the Nernst potential, such that the outwardly directed NH 4 + electrochemical gradient remained unchanged. Urea-N excretion was enhanced by 90% from 12 to 48 h, more than compensating for ammonia-N uptake...
J Exp Biol (2011) 214 (21): 3557–3569.
Published: 1 November 2011
... salinities, but only because FW trout allowed their transepithelial potential to rise by ∼15 mV during HEA exposure. Elevation of plasma [cortisol] during HEA exposure was more prolonged in SW fish. Plasma [glucose] increased in SW, but decreased in FW trout. Plasma [urea-N] also decreased in FW, in concert...
Includes: Supplementary data
J Exp Biol (2010) 213 (2): 295–300.
Published: 15 January 2010
... 2009 © 2010. V-ATPase acid secretion acid–base balance mosquito posterior midgut transepithelial potential An interesting and perplexing feature of the mosquito larval midgut is that the luminal compartments exhibit one of the highest pH values generated by a biological system...
Chris M. Wood, Fathima I. Iftikar, Graham R. Scott, Gudrun De Boeck, Katherine A. Sloman, Victoria Matey, Fabiola X. Valdez Domingos, Rafael Mendonça Duarte, Vera M. F. Almeida-Val, Adalberto L. Val
J Exp Biol (2009) 212 (12): 1949–1964.
Published: 15 June 2009
.... Transepithelial potential, which was sensitive to water [Ca 2+ ], became markedly less negative during hypoxia and was restored upon return to normoxia. Ammonia excretion, net K + loss rates, and 3 H 2 O exchange rates(diffusive water efflux rates) across the gills fell by 55–75% during hypoxia, with recovery...
J Exp Biol (2009) 212 (6): 878–892.
Published: 15 March 2009
... of Rhbg, Rhcg2,H + -ATPase and Na + /H + exchanger-2 (NHE-2) were up-regulated in DSI pre-exposed to ammonia and cortisol, CA-2 mRNA was down-regulated, and transepithelial potential became more negative. Bafilomycin (1 μmol l –1 ), phenamil (10 μmol l –1 ) and 5-( N,N -hexamethylene)amiloride (HMA...
J Exp Biol (2008) 211 (1): 42–48.
Published: 1 January 2008
... and on KCl reabsorption by the lower tubules were assessed. ZooneDH stimulated fluid secretion while increasing the[Na + ] of secreted fluid at the expense of [K + ]. Upper tubules responded to ZooneDH with a characteristic triphasic change in the transepithelial potential (TEP), reminiscent of the response...
J Exp Biol (2003) 206 (6): 949–957.
Published: 15 March 2003
... K + channel Na + /K + /2Cl - cotransporter Na + /K + -ATPase basolateral membrane apical membrane fluid secretion rate membrane potential transepithelial potential The possibility of K + entering the cell through the Na + /K + /2Cl - cotransporter was investigated by means...
J Exp Biol (2001) 204 (17): 3075–3084.
Published: 1 September 2001
...Edward M. Blumenthal SUMMARY The Malpighian tubule of Drosophila melanogaster is a useful model system for studying the regulation of epithelial ion transport. In acutely isolated tubules, the transepithelial potential (TEP) undergoes large oscillations in amplitude with a period of approximately...
J Exp Biol (2001) 204 (16): 2781–2794.
Published: 15 August 2001
... cells of the sensillum. In extracellular tip recordings of pheromone-dependent trichoid sensilla on the antennae of male Manduca sexta moths, we investigated the effects of octopamine and serotonin on the transepithelial potential, which is generated by the activity of V-ATPases in sensillar accessory...
J Exp Biol (1991) 158 (1): 1–18.
Published: 1 July 1991
... 3 − ]. Time courses of changes in plasma [Na + ] and total ammonia concentration, [ T amm ], were similar but in opposite directions. The transepithelial potential (TEP) of blood relative to water was negative, close to zero and positive, averaging −21, −5.8 and +6.2 mV for fish acclimated to 3, 100...