The Experts below are selected from a list of 141 Experts worldwide ranked by ideXlab platform
Chris M. Wood - One of the best experts on this subject based on the ideXlab platform.
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physiological and molecular responses of the spiny dogfish shark Squalus acanthias to high environmental ammonia scavenging for nitrogen
The Journal of Experimental Biology, 2015Co-Authors: Chris M. Wood, Patrick J. Walsh, C M NawataAbstract:In teleosts, a branchial metabolon links ammonia excretion to Na+ uptake via Rh glycoproteins and other transporters. Ureotelic elasmobranchs are thought to have low branchial ammonia permeability, and little is known about Rh function in this ancient group. We cloned Rh cDNAs (Rhag, Rhbg and Rhp2) and evaluated gill ammonia handling in Squalus acanthias. Control ammonia excretion was
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Morphology of the rectal gland of the spiny dogfish (Squalus acanthias) shark in response to feeding
Canadian Journal of Zoology, 2009Co-Authors: Victoria Mateyv. Matey, Chris M. Wood, W. Wesley Dowd, Dietmar Kültz, Patrick J. WalshAbstract:The morphology of the rectal gland was examined in spiny dogfish (Squalus acanthias L, 1758) sharks fasted (1 week) or 6 and 20 h postfeeding. The morphology of the fasted gland showed a pattern re...
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the spiny dogfish Squalus acanthias l maintains osmolyte balance during long term starvation
Journal of Fish Biology, 2008Co-Authors: M Kajimura, Patrick J. Walsh, Chris M. WoodAbstract:Over 56 days of starvation, spiny dogfish Squalus acanthias lost c. 0·3% body mass per day and condition factor and hepato-somatic index declined, but plasma osmolality levels remained higher than seawater levels for the entire period; major osmolytes in the plasma, such as urea, trimethylamine oxide and inorganic ions did not change appreciably. Urea was always the dominant nitrogen waste and was excreted at a constant rate over the 56 day starvation period, suggesting that a minimum rate of urea loss to the environment is unavoidable. Significant amounts of unknown-nitrogen compounds were also excreted at rates higher than that of ammonia. The dogfish can maintain its osmolytes constant despite losing large amounts of nitrogen-rich urea, and therefore maintains plasma hyperosmotic regulation over long-term starvation.
Patrick J. Walsh - One of the best experts on this subject based on the ideXlab platform.
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physiological and molecular responses of the spiny dogfish shark Squalus acanthias to high environmental ammonia scavenging for nitrogen
The Journal of Experimental Biology, 2015Co-Authors: Chris M. Wood, Patrick J. Walsh, C M NawataAbstract:In teleosts, a branchial metabolon links ammonia excretion to Na+ uptake via Rh glycoproteins and other transporters. Ureotelic elasmobranchs are thought to have low branchial ammonia permeability, and little is known about Rh function in this ancient group. We cloned Rh cDNAs (Rhag, Rhbg and Rhp2) and evaluated gill ammonia handling in Squalus acanthias. Control ammonia excretion was
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Morphology of the rectal gland of the spiny dogfish (Squalus acanthias) shark in response to feeding
Canadian Journal of Zoology, 2009Co-Authors: Victoria Mateyv. Matey, Chris M. Wood, W. Wesley Dowd, Dietmar Kültz, Patrick J. WalshAbstract:The morphology of the rectal gland was examined in spiny dogfish (Squalus acanthias L, 1758) sharks fasted (1 week) or 6 and 20 h postfeeding. The morphology of the fasted gland showed a pattern re...
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the spiny dogfish Squalus acanthias l maintains osmolyte balance during long term starvation
Journal of Fish Biology, 2008Co-Authors: M Kajimura, Patrick J. Walsh, Chris M. WoodAbstract:Over 56 days of starvation, spiny dogfish Squalus acanthias lost c. 0·3% body mass per day and condition factor and hepato-somatic index declined, but plasma osmolality levels remained higher than seawater levels for the entire period; major osmolytes in the plasma, such as urea, trimethylamine oxide and inorganic ions did not change appreciably. Urea was always the dominant nitrogen waste and was excreted at a constant rate over the 56 day starvation period, suggesting that a minimum rate of urea loss to the environment is unavoidable. Significant amounts of unknown-nitrogen compounds were also excreted at rates higher than that of ammonia. The dogfish can maintain its osmolytes constant despite losing large amounts of nitrogen-rich urea, and therefore maintains plasma hyperosmotic regulation over long-term starvation.
Rolf K H Kinne - One of the best experts on this subject based on the ideXlab platform.
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na d glucose cotransporter in the kidney of Squalus acanthias molecular identification and intrarenal distribution
American Journal of Physiology-regulatory Integrative and Comparative Physiology, 2006Co-Authors: Thorsten Althoff, Hartmut Hentschel, Jutta Luig, Hendrike Schutz, Myriam Kasch, Rolf K H KinneAbstract:Using primers against conserved regions of mammalian Na+-d-glucose cotransporters (SGLT), a cDNA was cloned from the kidney of spiny dogfish shark (Squalus acanthias). On the basis of comparison of...
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Na(+)-D-glucose cotransporter in the kidney of Squalus acanthias: molecular identification and intrarenal distribution.
American Journal of Physiology-regulatory Integrative and Comparative Physiology, 2005Co-Authors: Thorsten Althoff, Hartmut Hentschel, Jutta Luig, Hendrike Schutz, Myriam Kasch, Rolf K H KinneAbstract:Using primers against conserved regions of mammalian Na+-d-glucose cotransporters (SGLT), a cDNA was cloned from the kidney of spiny dogfish shark (Squalus acanthias). On the basis of comparison of...
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lectins as markers for tubule regions in the kidney of Squalus acanthias with further observations on sglt2 immunohistochemistry
Mount Desert Island Biological Laboratory the Bulletin, 2005Co-Authors: Thorsten Althoff, Hartmut Hentschel, Rolf K H KinneAbstract:After presenting the first results of immunohistochemical studies on the localization of the Na/Dglucose cotransporter (SGLT) in the kidney of the spiny dogfish (Squalus acanthias) in last year's bulletin, we can now refine these results with more details. During analysis of the tissue sections we encountered some problems in identifying individual tubule segments. Here we present a new valuable approach to identify distinct nephron regions in tissue sections in a reproducible manner.
C M Nawata - One of the best experts on this subject based on the ideXlab platform.
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physiological and molecular responses of the spiny dogfish shark Squalus acanthias to high environmental ammonia scavenging for nitrogen
The Journal of Experimental Biology, 2015Co-Authors: Chris M. Wood, Patrick J. Walsh, C M NawataAbstract:In teleosts, a branchial metabolon links ammonia excretion to Na+ uptake via Rh glycoproteins and other transporters. Ureotelic elasmobranchs are thought to have low branchial ammonia permeability, and little is known about Rh function in this ancient group. We cloned Rh cDNAs (Rhag, Rhbg and Rhp2) and evaluated gill ammonia handling in Squalus acanthias. Control ammonia excretion was
Hartmut Hentschel - One of the best experts on this subject based on the ideXlab platform.
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na d glucose cotransporter in the kidney of Squalus acanthias molecular identification and intrarenal distribution
American Journal of Physiology-regulatory Integrative and Comparative Physiology, 2006Co-Authors: Thorsten Althoff, Hartmut Hentschel, Jutta Luig, Hendrike Schutz, Myriam Kasch, Rolf K H KinneAbstract:Using primers against conserved regions of mammalian Na+-d-glucose cotransporters (SGLT), a cDNA was cloned from the kidney of spiny dogfish shark (Squalus acanthias). On the basis of comparison of...
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Na(+)-D-glucose cotransporter in the kidney of Squalus acanthias: molecular identification and intrarenal distribution.
American Journal of Physiology-regulatory Integrative and Comparative Physiology, 2005Co-Authors: Thorsten Althoff, Hartmut Hentschel, Jutta Luig, Hendrike Schutz, Myriam Kasch, Rolf K H KinneAbstract:Using primers against conserved regions of mammalian Na+-d-glucose cotransporters (SGLT), a cDNA was cloned from the kidney of spiny dogfish shark (Squalus acanthias). On the basis of comparison of...
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lectins as markers for tubule regions in the kidney of Squalus acanthias with further observations on sglt2 immunohistochemistry
Mount Desert Island Biological Laboratory the Bulletin, 2005Co-Authors: Thorsten Althoff, Hartmut Hentschel, Rolf K H KinneAbstract:After presenting the first results of immunohistochemical studies on the localization of the Na/Dglucose cotransporter (SGLT) in the kidney of the spiny dogfish (Squalus acanthias) in last year's bulletin, we can now refine these results with more details. During analysis of the tissue sections we encountered some problems in identifying individual tubule segments. Here we present a new valuable approach to identify distinct nephron regions in tissue sections in a reproducible manner.
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localization of mg2 sensing shark kidney calcium receptor skcar in kidney of spiny dogfish Squalus acanthias
American Journal of Physiology-renal Physiology, 2003Co-Authors: Hartmut Hentschel, Jacqueline Nearing, William H Harris, Marlies Betka, Michelle A Baum, Steven C Hebert, Marlies ElgerAbstract:We recently cloned a homologue of the bovine parathyroid calcium receptor from the kidney of a spiny dogfish (Squalus acanthias) and termed this new protein SKCaR. SKCaR senses alterations in extra...