Two sodium pumps in the hepatopancreas of the intertidal euryhaline crab Neohelice granulata: Biochemical characteristics and differential modulation after feeding
- Autores
- Méndez, Eugenia; Caruso Neves, C.; Lopez Mañanes, Alejandra Antonia
- Año de publicación
- 2018
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- No study has been done on the existence, biochemical characteristics, and modulation of K+-independent ouabain-insensitive Na+ ATPase activity (the second sodium pump) in the digestive tract of intertidal euryhaline crabs and moreover on the coexistence and modulation under distinct physiological and (or) environmental conditions of different sodium pumps. We determined the occurrence, characteristics, and responses at different times (0, 1, 24, 48, and 120 h) after feeding upon distinct salinities of Na+ ATPase activity and Na+/K+ ATPase in the hepatopancreas of Neohelice granulata (Dana, 1851), which is a model species. The stimulation by Na+ under total inhibition of Na+/K+ ATPase activity revealed the occurrence of Na+ ATPase activity that was totally inhibited by 2 mmol·L–1 furosemide, exhibits Michaelis–Menten kinetics for ATP (apparent Km = 0.52 ± 0.16 mmol·L–1), and highest activity at around pH 7.4. In crabs acclimated to 35 psu (osmoconforming conditions), Na+ ATPase activity was highly increased (about 15-fold) (532 ± 58 nmol Pi·mg protein−1·min−1) in the hepatopancreas 48 h after feeding. In 10 psu (hyper-regulating conditions), Na+ ATPase activity decreased in the hepatopancreas 24 h after feeding (7 ± 9 nmol Pi·mg protein−1·min−1) and recovered initial values after 48 h (24 ± 35 nmol Pi·mg protein−1·min−1). Unlike Na+ ATPase, Na+/K+ ATPase activity did not change after feeding at any salinity, suggesting the specific modulation of the second sodium pump and its role in postprandial adjustments in the hepatopancreas.
Fil: Méndez, Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Caruso Neves, C.. Universidade Federal do Rio de Janeiro; Brasil
Fil: Lopez Mañanes, Alejandra Antonia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina - Materia
-
CRAB
FEEDING
HEPATOPANCREAS
K+-INDEPENDENT OUABAIN-INSENSITIVE NA+ ATPASE ACTIVITY
NEOHELICE GRANULATA
SODIUM PUMPS
SOUTHWESTERN ATLANTIC - 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:11336/92754
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oai:ri.conicet.gov.ar:11336/92754 |
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3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
Two sodium pumps in the hepatopancreas of the intertidal euryhaline crab Neohelice granulata: Biochemical characteristics and differential modulation after feedingMéndez, EugeniaCaruso Neves, C.Lopez Mañanes, Alejandra AntoniaCRABFEEDINGHEPATOPANCREASK+-INDEPENDENT OUABAIN-INSENSITIVE NA+ ATPASE ACTIVITYNEOHELICE GRANULATASODIUM PUMPSSOUTHWESTERN ATLANTIChttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1No study has been done on the existence, biochemical characteristics, and modulation of K+-independent ouabain-insensitive Na+ ATPase activity (the second sodium pump) in the digestive tract of intertidal euryhaline crabs and moreover on the coexistence and modulation under distinct physiological and (or) environmental conditions of different sodium pumps. We determined the occurrence, characteristics, and responses at different times (0, 1, 24, 48, and 120 h) after feeding upon distinct salinities of Na+ ATPase activity and Na+/K+ ATPase in the hepatopancreas of Neohelice granulata (Dana, 1851), which is a model species. The stimulation by Na+ under total inhibition of Na+/K+ ATPase activity revealed the occurrence of Na+ ATPase activity that was totally inhibited by 2 mmol·L–1 furosemide, exhibits Michaelis–Menten kinetics for ATP (apparent Km = 0.52 ± 0.16 mmol·L–1), and highest activity at around pH 7.4. In crabs acclimated to 35 psu (osmoconforming conditions), Na+ ATPase activity was highly increased (about 15-fold) (532 ± 58 nmol Pi·mg protein−1·min−1) in the hepatopancreas 48 h after feeding. In 10 psu (hyper-regulating conditions), Na+ ATPase activity decreased in the hepatopancreas 24 h after feeding (7 ± 9 nmol Pi·mg protein−1·min−1) and recovered initial values after 48 h (24 ± 35 nmol Pi·mg protein−1·min−1). Unlike Na+ ATPase, Na+/K+ ATPase activity did not change after feeding at any salinity, suggesting the specific modulation of the second sodium pump and its role in postprandial adjustments in the hepatopancreas.Fil: Méndez, Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: Caruso Neves, C.. Universidade Federal do Rio de Janeiro; BrasilFil: Lopez Mañanes, Alejandra Antonia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaNational Research Council Canada-NRC Research Press2018-01-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/92754Méndez, Eugenia; Caruso Neves, C.; Lopez Mañanes, Alejandra Antonia; Two sodium pumps in the hepatopancreas of the intertidal euryhaline crab Neohelice granulata: Biochemical characteristics and differential modulation after feeding; National Research Council Canada-NRC Research Press; Canadian Journal of Zoology; 96; 6; 5-1-2018; 576-5840008-4301CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.nrcresearchpress.com/doi/10.1139/cjz-2017-0128info:eu-repo/semantics/altIdentifier/doi/10.1139/cjz-2017-0128info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:44:01Zoai:ri.conicet.gov.ar:11336/92754instacron: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 09:44:01.647CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Two sodium pumps in the hepatopancreas of the intertidal euryhaline crab Neohelice granulata: Biochemical characteristics and differential modulation after feeding |
title |
Two sodium pumps in the hepatopancreas of the intertidal euryhaline crab Neohelice granulata: Biochemical characteristics and differential modulation after feeding |
spellingShingle |
Two sodium pumps in the hepatopancreas of the intertidal euryhaline crab Neohelice granulata: Biochemical characteristics and differential modulation after feeding Méndez, Eugenia CRAB FEEDING HEPATOPANCREAS K+-INDEPENDENT OUABAIN-INSENSITIVE NA+ ATPASE ACTIVITY NEOHELICE GRANULATA SODIUM PUMPS SOUTHWESTERN ATLANTIC |
title_short |
Two sodium pumps in the hepatopancreas of the intertidal euryhaline crab Neohelice granulata: Biochemical characteristics and differential modulation after feeding |
title_full |
Two sodium pumps in the hepatopancreas of the intertidal euryhaline crab Neohelice granulata: Biochemical characteristics and differential modulation after feeding |
title_fullStr |
Two sodium pumps in the hepatopancreas of the intertidal euryhaline crab Neohelice granulata: Biochemical characteristics and differential modulation after feeding |
title_full_unstemmed |
Two sodium pumps in the hepatopancreas of the intertidal euryhaline crab Neohelice granulata: Biochemical characteristics and differential modulation after feeding |
title_sort |
Two sodium pumps in the hepatopancreas of the intertidal euryhaline crab Neohelice granulata: Biochemical characteristics and differential modulation after feeding |
dc.creator.none.fl_str_mv |
Méndez, Eugenia Caruso Neves, C. Lopez Mañanes, Alejandra Antonia |
author |
Méndez, Eugenia |
author_facet |
Méndez, Eugenia Caruso Neves, C. Lopez Mañanes, Alejandra Antonia |
author_role |
author |
author2 |
Caruso Neves, C. Lopez Mañanes, Alejandra Antonia |
author2_role |
author author |
dc.subject.none.fl_str_mv |
CRAB FEEDING HEPATOPANCREAS K+-INDEPENDENT OUABAIN-INSENSITIVE NA+ ATPASE ACTIVITY NEOHELICE GRANULATA SODIUM PUMPS SOUTHWESTERN ATLANTIC |
topic |
CRAB FEEDING HEPATOPANCREAS K+-INDEPENDENT OUABAIN-INSENSITIVE NA+ ATPASE ACTIVITY NEOHELICE GRANULATA SODIUM PUMPS SOUTHWESTERN ATLANTIC |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
No study has been done on the existence, biochemical characteristics, and modulation of K+-independent ouabain-insensitive Na+ ATPase activity (the second sodium pump) in the digestive tract of intertidal euryhaline crabs and moreover on the coexistence and modulation under distinct physiological and (or) environmental conditions of different sodium pumps. We determined the occurrence, characteristics, and responses at different times (0, 1, 24, 48, and 120 h) after feeding upon distinct salinities of Na+ ATPase activity and Na+/K+ ATPase in the hepatopancreas of Neohelice granulata (Dana, 1851), which is a model species. The stimulation by Na+ under total inhibition of Na+/K+ ATPase activity revealed the occurrence of Na+ ATPase activity that was totally inhibited by 2 mmol·L–1 furosemide, exhibits Michaelis–Menten kinetics for ATP (apparent Km = 0.52 ± 0.16 mmol·L–1), and highest activity at around pH 7.4. In crabs acclimated to 35 psu (osmoconforming conditions), Na+ ATPase activity was highly increased (about 15-fold) (532 ± 58 nmol Pi·mg protein−1·min−1) in the hepatopancreas 48 h after feeding. In 10 psu (hyper-regulating conditions), Na+ ATPase activity decreased in the hepatopancreas 24 h after feeding (7 ± 9 nmol Pi·mg protein−1·min−1) and recovered initial values after 48 h (24 ± 35 nmol Pi·mg protein−1·min−1). Unlike Na+ ATPase, Na+/K+ ATPase activity did not change after feeding at any salinity, suggesting the specific modulation of the second sodium pump and its role in postprandial adjustments in the hepatopancreas. Fil: Méndez, Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina Fil: Caruso Neves, C.. Universidade Federal do Rio de Janeiro; Brasil Fil: Lopez Mañanes, Alejandra Antonia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina |
description |
No study has been done on the existence, biochemical characteristics, and modulation of K+-independent ouabain-insensitive Na+ ATPase activity (the second sodium pump) in the digestive tract of intertidal euryhaline crabs and moreover on the coexistence and modulation under distinct physiological and (or) environmental conditions of different sodium pumps. We determined the occurrence, characteristics, and responses at different times (0, 1, 24, 48, and 120 h) after feeding upon distinct salinities of Na+ ATPase activity and Na+/K+ ATPase in the hepatopancreas of Neohelice granulata (Dana, 1851), which is a model species. The stimulation by Na+ under total inhibition of Na+/K+ ATPase activity revealed the occurrence of Na+ ATPase activity that was totally inhibited by 2 mmol·L–1 furosemide, exhibits Michaelis–Menten kinetics for ATP (apparent Km = 0.52 ± 0.16 mmol·L–1), and highest activity at around pH 7.4. In crabs acclimated to 35 psu (osmoconforming conditions), Na+ ATPase activity was highly increased (about 15-fold) (532 ± 58 nmol Pi·mg protein−1·min−1) in the hepatopancreas 48 h after feeding. In 10 psu (hyper-regulating conditions), Na+ ATPase activity decreased in the hepatopancreas 24 h after feeding (7 ± 9 nmol Pi·mg protein−1·min−1) and recovered initial values after 48 h (24 ± 35 nmol Pi·mg protein−1·min−1). Unlike Na+ ATPase, Na+/K+ ATPase activity did not change after feeding at any salinity, suggesting the specific modulation of the second sodium pump and its role in postprandial adjustments in the hepatopancreas. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-01-05 |
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/11336/92754 Méndez, Eugenia; Caruso Neves, C.; Lopez Mañanes, Alejandra Antonia; Two sodium pumps in the hepatopancreas of the intertidal euryhaline crab Neohelice granulata: Biochemical characteristics and differential modulation after feeding; National Research Council Canada-NRC Research Press; Canadian Journal of Zoology; 96; 6; 5-1-2018; 576-584 0008-4301 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/92754 |
identifier_str_mv |
Méndez, Eugenia; Caruso Neves, C.; Lopez Mañanes, Alejandra Antonia; Two sodium pumps in the hepatopancreas of the intertidal euryhaline crab Neohelice granulata: Biochemical characteristics and differential modulation after feeding; National Research Council Canada-NRC Research Press; Canadian Journal of Zoology; 96; 6; 5-1-2018; 576-584 0008-4301 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://www.nrcresearchpress.com/doi/10.1139/cjz-2017-0128 info:eu-repo/semantics/altIdentifier/doi/10.1139/cjz-2017-0128 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
National Research Council Canada-NRC Research Press |
publisher.none.fl_str_mv |
National Research Council Canada-NRC Research Press |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1842268639264243712 |
score |
13.13397 |