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dc.contributor.authorFerraris, Ronaldo P.
dc.contributor.authorAhearn, Gregory A.
dc.date.accessioned2012-10-09T09:08:37Z
dc.date.available2012-10-09T09:08:37Z
dc.date.issued1983
dc.identifier.citationFerraris, R.P., & Ahearn, G.A. (1983). Intestinal glucose transport in carnivorous and herbivorous marine fishes. Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology, 152(1):79-90.en
dc.identifier.issn0174-1578
dc.identifier.urihttp://hdl.handle.net/10862/1132
dc.description.abstractThe influx and transepithelial movements of glucose and their effects on the electrophysiology and Na transport in upper and lower intestines of the herbivorous surgeonfish, Acanthurus mata , and carnivorous eel, Gymnothorax undulatus , were measured. The K t G and J max G of glucose influx into the tissues were higher in the surgeonfish upper intestine than in the surgeonfish lower intestine or in both segments of the eel intestine. A prominent diffusion-like transport component was also measured in all four segments during influx experiments. Net transepithelial glucose fluxes (0.05 mM) were greater in eel intestine than in those of the surgeonfish largely due to an apparent lower apical membrane permeability of the former coincident with reduced backflux of glucose from epithelium to lumen. All four stripped intestinal segments exhibited non-significant (from zero; P >0.05) or small, serosa-negative transepithelial potential differences (-0.1 to -2.2 mV), and low transepithelial resistances (40–88 O cm -2 ). Each tissue displayed significant ( P P >0.05) change the transepithelial resistance, but did induce a significant ( P J net Na with added luminal glucose, these increased net cation fluxes were not quite significant ( P >0.05). It is concluded that coupled Na-glucose transport occurs in these tissues, but that metabolic enhancement of unrelated current-generating mechanisms also takes place and may modify depolarizing effects of organic solute transfer.en
dc.language.isoenen
dc.publisherSpringer Verlagen
dc.subjectGymnothorax undulates
dc.subjectAcanthurus mata
dc.titleIntestinal glucose transport in carnivorous and herbivorous marine fishesen
dc.typeArticleen
dc.identifier.doi10.1007/BF00689731
dc.citation.volume152
dc.citation.issue1
dc.citation.spage79
dc.citation.epage90
dc.citation.journalTitleJournal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiologyen
dc.subject.asfaEpitheliaen
dc.subject.asfaElectrophysiologyen
dc.subject.asfaGlucoseen
dc.subject.asfaIntestinesen
dc.subject.asfaTransport processesen
dc.subject.asfaIon transporten
dc.subject.asfaSodiumen


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