Dietary Fructose Enhances the Ability of Low Concentrations of Angiotensin II to Stimulate Proximal Tubule Na+ Reabsorption
- Autores
- González Vicente, Agustín; Cabral, Pablo; Hong, Nancy J.; Asirwatham, Jessica; Yang, Nianxin; Berthiaume, Jessica; Dominici, Fernando Pablo; Garvin, Jeffrey L.
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Fructose-enriched diets cause salt-sensitive hypertension. Proximal tubules (PTs) reabsorb 70% of the water and salt filtered through the glomerulus. Angiotensin II (Ang II) regulates this process. Normally, dietary salt reduces Ang II allowing the kidney to excrete more salt, thereby preventing hypertension. We hypothesized that fructose-enriched diets enhance the ability of low concentrations of Ang II to stimulate PT transport. We measured the effects of a low concentration of Ang II (10−12 mol/L) on transport-related oxygen consumption (QO2), and Na/K-ATPase and Na/H-exchange (NHE) activities and expression in PTs from rats consuming tap water (Control) or 20% fructose (FRUC). In FRUC-treated PTs, Ang II increased QO2 by 14.9 ± 1.3 nmol/mg/min (p < 0.01) but had no effect in Controls. FRUC elevated NHE3 expression by 19 ± 3% (p < 0.004) but not Na/K-ATPase expression. Ang II stimulated NHE activity in FRUC PT (Δ + 0.7 ± 0.1 Arbitrary Fluorescent units (AFU)/s, p < 0.01) but not in Controls. Na/K-ATPase activity was not affected. The PKC inhibitor Gö6976 blocked the ability of FRUC to augment the actions of Ang II. FRUC did not alter the inhibitory effect of dopamine on NHE activity. We conclude that dietary fructose increases the ability of low concentrations of Ang II to stimulate PT Na reabsorption via effects on NHE.
Fil: González Vicente, Agustín. Case Western Reserve University; Estados Unidos. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica; Argentina
Fil: Cabral, Pablo. Case Western Reserve University; Estados Unidos. Universidad de Buenos Aires. Facultad de Medicina; Argentina
Fil: Hong, Nancy J.. Case Western Reserve University; Estados Unidos
Fil: Asirwatham, Jessica. Case Western Reserve University; Estados Unidos
Fil: Yang, Nianxin. Case Western Reserve University; Estados Unidos
Fil: Berthiaume, Jessica. Case Western Reserve University; Estados Unidos
Fil: Dominici, Fernando Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; Argentina
Fil: Garvin, Jeffrey L.. Case Western Reserve University; Estados Unidos - Materia
-
ANGIOTENSIN II
FRUCTOSE
SODIUM
PROXIMAL TUBULES - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/47359
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Dietary Fructose Enhances the Ability of Low Concentrations of Angiotensin II to Stimulate Proximal Tubule Na+ ReabsorptionGonzález Vicente, AgustínCabral, PabloHong, Nancy J.Asirwatham, JessicaYang, NianxinBerthiaume, JessicaDominici, Fernando PabloGarvin, Jeffrey L.ANGIOTENSIN IIFRUCTOSESODIUMPROXIMAL TUBULEShttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Fructose-enriched diets cause salt-sensitive hypertension. Proximal tubules (PTs) reabsorb 70% of the water and salt filtered through the glomerulus. Angiotensin II (Ang II) regulates this process. Normally, dietary salt reduces Ang II allowing the kidney to excrete more salt, thereby preventing hypertension. We hypothesized that fructose-enriched diets enhance the ability of low concentrations of Ang II to stimulate PT transport. We measured the effects of a low concentration of Ang II (10−12 mol/L) on transport-related oxygen consumption (QO2), and Na/K-ATPase and Na/H-exchange (NHE) activities and expression in PTs from rats consuming tap water (Control) or 20% fructose (FRUC). In FRUC-treated PTs, Ang II increased QO2 by 14.9 ± 1.3 nmol/mg/min (p < 0.01) but had no effect in Controls. FRUC elevated NHE3 expression by 19 ± 3% (p < 0.004) but not Na/K-ATPase expression. Ang II stimulated NHE activity in FRUC PT (Δ + 0.7 ± 0.1 Arbitrary Fluorescent units (AFU)/s, p < 0.01) but not in Controls. Na/K-ATPase activity was not affected. The PKC inhibitor Gö6976 blocked the ability of FRUC to augment the actions of Ang II. FRUC did not alter the inhibitory effect of dopamine on NHE activity. We conclude that dietary fructose increases the ability of low concentrations of Ang II to stimulate PT Na reabsorption via effects on NHE.Fil: González Vicente, Agustín. Case Western Reserve University; Estados Unidos. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica; ArgentinaFil: Cabral, Pablo. Case Western Reserve University; Estados Unidos. Universidad de Buenos Aires. Facultad de Medicina; ArgentinaFil: Hong, Nancy J.. Case Western Reserve University; Estados UnidosFil: Asirwatham, Jessica. Case Western Reserve University; Estados UnidosFil: Yang, Nianxin. Case Western Reserve University; Estados UnidosFil: Berthiaume, Jessica. Case Western Reserve University; Estados UnidosFil: Dominici, Fernando Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; ArgentinaFil: Garvin, Jeffrey L.. Case Western Reserve University; Estados UnidosMDPI2017-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/47359González Vicente, Agustín; Cabral, Pablo; Hong, Nancy J.; Asirwatham, Jessica; Yang, Nianxin; et al.; Dietary Fructose Enhances the Ability of Low Concentrations of Angiotensin II to Stimulate Proximal Tubule Na+ Reabsorption; MDPI; Nutrients; 9; 8; 8-2017; 1-152072-6643CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3390/nu9080885info:eu-repo/semantics/altIdentifier/url/http://www.mdpi.com/2072-6643/9/8/885info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:01:20Zoai:ri.conicet.gov.ar:11336/47359instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:01:21.113CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Dietary Fructose Enhances the Ability of Low Concentrations of Angiotensin II to Stimulate Proximal Tubule Na+ Reabsorption |
title |
Dietary Fructose Enhances the Ability of Low Concentrations of Angiotensin II to Stimulate Proximal Tubule Na+ Reabsorption |
spellingShingle |
Dietary Fructose Enhances the Ability of Low Concentrations of Angiotensin II to Stimulate Proximal Tubule Na+ Reabsorption González Vicente, Agustín ANGIOTENSIN II FRUCTOSE SODIUM PROXIMAL TUBULES |
title_short |
Dietary Fructose Enhances the Ability of Low Concentrations of Angiotensin II to Stimulate Proximal Tubule Na+ Reabsorption |
title_full |
Dietary Fructose Enhances the Ability of Low Concentrations of Angiotensin II to Stimulate Proximal Tubule Na+ Reabsorption |
title_fullStr |
Dietary Fructose Enhances the Ability of Low Concentrations of Angiotensin II to Stimulate Proximal Tubule Na+ Reabsorption |
title_full_unstemmed |
Dietary Fructose Enhances the Ability of Low Concentrations of Angiotensin II to Stimulate Proximal Tubule Na+ Reabsorption |
title_sort |
Dietary Fructose Enhances the Ability of Low Concentrations of Angiotensin II to Stimulate Proximal Tubule Na+ Reabsorption |
dc.creator.none.fl_str_mv |
González Vicente, Agustín Cabral, Pablo Hong, Nancy J. Asirwatham, Jessica Yang, Nianxin Berthiaume, Jessica Dominici, Fernando Pablo Garvin, Jeffrey L. |
author |
González Vicente, Agustín |
author_facet |
González Vicente, Agustín Cabral, Pablo Hong, Nancy J. Asirwatham, Jessica Yang, Nianxin Berthiaume, Jessica Dominici, Fernando Pablo Garvin, Jeffrey L. |
author_role |
author |
author2 |
Cabral, Pablo Hong, Nancy J. Asirwatham, Jessica Yang, Nianxin Berthiaume, Jessica Dominici, Fernando Pablo Garvin, Jeffrey L. |
author2_role |
author author author author author author author |
dc.subject.none.fl_str_mv |
ANGIOTENSIN II FRUCTOSE SODIUM PROXIMAL TUBULES |
topic |
ANGIOTENSIN II FRUCTOSE SODIUM PROXIMAL TUBULES |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Fructose-enriched diets cause salt-sensitive hypertension. Proximal tubules (PTs) reabsorb 70% of the water and salt filtered through the glomerulus. Angiotensin II (Ang II) regulates this process. Normally, dietary salt reduces Ang II allowing the kidney to excrete more salt, thereby preventing hypertension. We hypothesized that fructose-enriched diets enhance the ability of low concentrations of Ang II to stimulate PT transport. We measured the effects of a low concentration of Ang II (10−12 mol/L) on transport-related oxygen consumption (QO2), and Na/K-ATPase and Na/H-exchange (NHE) activities and expression in PTs from rats consuming tap water (Control) or 20% fructose (FRUC). In FRUC-treated PTs, Ang II increased QO2 by 14.9 ± 1.3 nmol/mg/min (p < 0.01) but had no effect in Controls. FRUC elevated NHE3 expression by 19 ± 3% (p < 0.004) but not Na/K-ATPase expression. Ang II stimulated NHE activity in FRUC PT (Δ + 0.7 ± 0.1 Arbitrary Fluorescent units (AFU)/s, p < 0.01) but not in Controls. Na/K-ATPase activity was not affected. The PKC inhibitor Gö6976 blocked the ability of FRUC to augment the actions of Ang II. FRUC did not alter the inhibitory effect of dopamine on NHE activity. We conclude that dietary fructose increases the ability of low concentrations of Ang II to stimulate PT Na reabsorption via effects on NHE. Fil: González Vicente, Agustín. Case Western Reserve University; Estados Unidos. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica; Argentina Fil: Cabral, Pablo. Case Western Reserve University; Estados Unidos. Universidad de Buenos Aires. Facultad de Medicina; Argentina Fil: Hong, Nancy J.. Case Western Reserve University; Estados Unidos Fil: Asirwatham, Jessica. Case Western Reserve University; Estados Unidos Fil: Yang, Nianxin. Case Western Reserve University; Estados Unidos Fil: Berthiaume, Jessica. Case Western Reserve University; Estados Unidos Fil: Dominici, Fernando Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; Argentina Fil: Garvin, Jeffrey L.. Case Western Reserve University; Estados Unidos |
description |
Fructose-enriched diets cause salt-sensitive hypertension. Proximal tubules (PTs) reabsorb 70% of the water and salt filtered through the glomerulus. Angiotensin II (Ang II) regulates this process. Normally, dietary salt reduces Ang II allowing the kidney to excrete more salt, thereby preventing hypertension. We hypothesized that fructose-enriched diets enhance the ability of low concentrations of Ang II to stimulate PT transport. We measured the effects of a low concentration of Ang II (10−12 mol/L) on transport-related oxygen consumption (QO2), and Na/K-ATPase and Na/H-exchange (NHE) activities and expression in PTs from rats consuming tap water (Control) or 20% fructose (FRUC). In FRUC-treated PTs, Ang II increased QO2 by 14.9 ± 1.3 nmol/mg/min (p < 0.01) but had no effect in Controls. FRUC elevated NHE3 expression by 19 ± 3% (p < 0.004) but not Na/K-ATPase expression. Ang II stimulated NHE activity in FRUC PT (Δ + 0.7 ± 0.1 Arbitrary Fluorescent units (AFU)/s, p < 0.01) but not in Controls. Na/K-ATPase activity was not affected. The PKC inhibitor Gö6976 blocked the ability of FRUC to augment the actions of Ang II. FRUC did not alter the inhibitory effect of dopamine on NHE activity. We conclude that dietary fructose increases the ability of low concentrations of Ang II to stimulate PT Na reabsorption via effects on NHE. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-08 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/47359 González Vicente, Agustín; Cabral, Pablo; Hong, Nancy J.; Asirwatham, Jessica; Yang, Nianxin; et al.; Dietary Fructose Enhances the Ability of Low Concentrations of Angiotensin II to Stimulate Proximal Tubule Na+ Reabsorption; MDPI; Nutrients; 9; 8; 8-2017; 1-15 2072-6643 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/47359 |
identifier_str_mv |
González Vicente, Agustín; Cabral, Pablo; Hong, Nancy J.; Asirwatham, Jessica; Yang, Nianxin; et al.; Dietary Fructose Enhances the Ability of Low Concentrations of Angiotensin II to Stimulate Proximal Tubule Na+ Reabsorption; MDPI; Nutrients; 9; 8; 8-2017; 1-15 2072-6643 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.3390/nu9080885 info:eu-repo/semantics/altIdentifier/url/http://www.mdpi.com/2072-6643/9/8/885 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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application/pdf application/pdf |
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MDPI |
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MDPI |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1842269691201978368 |
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13.13397 |