Inhibition of multidrug resistance-associated protein 2 (MRP2) activity by the contraceptive nomegestrol acetate in HepG2 and Caco-2 cells

Autores
Tocchetti, Guillermo Nicolás; Dominguez, Camila Juliana; Zecchinati, Felipe; Arana, Maite Rocío; Ruiz, Maria Laura; Villanueva, Silvina Stella Maris; Mottino, Aldo Domingo; Weiss, Johanna; Rigalli, Juan Pablo
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Multidrug resistance-associated protein 2 (MRP2) plays a key role in hepatic and intestinal disposition of endo- and xenobiotics. Several therapeutic agents modulate MRP2 activity resulting in pharmacological interactions. Nomegestrol acetate (NMGA) is a progestogen increasingly used in contraceptive formulations. The aim of this work was to evaluate the effect of NMGA on MRP2 activity in HepG2 and Caco-2 cells as models of human hepatocytes and enterocytes, respectively. NMGA (5, 50 and 500 nM; 48 h) decreased MRP2-mediated transport of 2,4-dinitrophenyl-S-glutathione in HepG2 cells, with no effect on MRP2 protein expression. Acute exposure (1 h) to the same concentrations of NMGA failed to affect MRP2 activity, ruling out an inhibitory action directly induced by the drug. In contrast, acute incubation with a lysate of HepG2 cells pre-treated with NMGA, containing potential metabolites, reproduced MRP2 inhibition. Preincubation of lysates with sulfatase but not with β-glucuronidase abolished the inhibitory action, strongly suggesting participation of NMGA sulfated derivatives. Western blot studies in plasma vs. intracellular membrane fractions ruled out internalization of MRP2 to be responsible for the impairment of transport activity. MRP2-mediated transport of 5(6)-carboxy-2′,7′-dichlorofluorescein was not affected in Caco-2 cells incubated for 48 h with either 5, 50 or 500 nM NMGA. Conversely, acute exposure (1 h) of Caco-2 cells to NMGA-treated HepG2 lysates decreased MRP2 activity, being this effect also prevented by pre-treatment of the lysates with sulfatase. Taken together, these findings demonstrate an inhibitory effect of NMGA sulfated metabolites on hepatic and intestinal MRP2 function. Extrapolated to the in vivo situation, they suggest the possibility of pharmacological interactions with coadministered drugs.
Fil: Tocchetti, Guillermo Nicolás. University of Heidelberg; Alemania. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Fisiología Experimental. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Fisiología Experimental; Argentina
Fil: Dominguez, Camila Juliana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Fisiología Experimental. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Fisiología Experimental; Argentina
Fil: Zecchinati, Felipe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Fisiología Experimental. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Fisiología Experimental; Argentina
Fil: Arana, Maite Rocío. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Fisiología Experimental. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Fisiología Experimental; Argentina
Fil: Ruiz, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Fisiología Experimental. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Fisiología Experimental; Argentina
Fil: Villanueva, Silvina Stella Maris. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Fisiología Experimental. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Fisiología Experimental; Argentina
Fil: Mottino, Aldo Domingo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Fisiología Experimental. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Fisiología Experimental; Argentina
Fil: Weiss, Johanna. University of Heidelberg; Alemania
Fil: Rigalli, Juan Pablo. University of Heidelberg; Alemania. Radboud Universiteit Nijmegen; Países Bajos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
CACO-2 CELLS
DRUG–DRUG INTERACTIONS
HEPG2 CELLS
MULTIDRUG RESISTANCE-ASSOCIATED PROTEIN 2
NOMEGESTROL ACETATE
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/87335
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/87335
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Inhibition of multidrug resistance-associated protein 2 (MRP2) activity by the contraceptive nomegestrol acetate in HepG2 and Caco-2 cellsTocchetti, Guillermo NicolásDominguez, Camila JulianaZecchinati, FelipeArana, Maite RocíoRuiz, Maria LauraVillanueva, Silvina Stella MarisMottino, Aldo DomingoWeiss, JohannaRigalli, Juan PabloCACO-2 CELLSDRUG–DRUG INTERACTIONSHEPG2 CELLSMULTIDRUG RESISTANCE-ASSOCIATED PROTEIN 2NOMEGESTROL ACETATEhttps://purl.org/becyt/ford/3.1https://purl.org/becyt/ford/3Multidrug resistance-associated protein 2 (MRP2) plays a key role in hepatic and intestinal disposition of endo- and xenobiotics. Several therapeutic agents modulate MRP2 activity resulting in pharmacological interactions. Nomegestrol acetate (NMGA) is a progestogen increasingly used in contraceptive formulations. The aim of this work was to evaluate the effect of NMGA on MRP2 activity in HepG2 and Caco-2 cells as models of human hepatocytes and enterocytes, respectively. NMGA (5, 50 and 500 nM; 48 h) decreased MRP2-mediated transport of 2,4-dinitrophenyl-S-glutathione in HepG2 cells, with no effect on MRP2 protein expression. Acute exposure (1 h) to the same concentrations of NMGA failed to affect MRP2 activity, ruling out an inhibitory action directly induced by the drug. In contrast, acute incubation with a lysate of HepG2 cells pre-treated with NMGA, containing potential metabolites, reproduced MRP2 inhibition. Preincubation of lysates with sulfatase but not with β-glucuronidase abolished the inhibitory action, strongly suggesting participation of NMGA sulfated derivatives. Western blot studies in plasma vs. intracellular membrane fractions ruled out internalization of MRP2 to be responsible for the impairment of transport activity. MRP2-mediated transport of 5(6)-carboxy-2′,7′-dichlorofluorescein was not affected in Caco-2 cells incubated for 48 h with either 5, 50 or 500 nM NMGA. Conversely, acute exposure (1 h) of Caco-2 cells to NMGA-treated HepG2 lysates decreased MRP2 activity, being this effect also prevented by pre-treatment of the lysates with sulfatase. Taken together, these findings demonstrate an inhibitory effect of NMGA sulfated metabolites on hepatic and intestinal MRP2 function. Extrapolated to the in vivo situation, they suggest the possibility of pharmacological interactions with coadministered drugs.Fil: Tocchetti, Guillermo Nicolás. University of Heidelberg; Alemania. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Fisiología Experimental. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Fisiología Experimental; ArgentinaFil: Dominguez, Camila Juliana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Fisiología Experimental. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Fisiología Experimental; ArgentinaFil: Zecchinati, Felipe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Fisiología Experimental. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Fisiología Experimental; ArgentinaFil: Arana, Maite Rocío. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Fisiología Experimental. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Fisiología Experimental; ArgentinaFil: Ruiz, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Fisiología Experimental. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Fisiología Experimental; ArgentinaFil: Villanueva, Silvina Stella Maris. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Fisiología Experimental. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Fisiología Experimental; ArgentinaFil: Mottino, Aldo Domingo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Fisiología Experimental. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Fisiología Experimental; ArgentinaFil: Weiss, Johanna. University of Heidelberg; AlemaniaFil: Rigalli, Juan Pablo. University of Heidelberg; Alemania. Radboud Universiteit Nijmegen; Países Bajos. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaElsevier Science2018-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/87335Tocchetti, Guillermo Nicolás; Dominguez, Camila Juliana; Zecchinati, Felipe; Arana, Maite Rocío; Ruiz, Maria Laura; et al.; Inhibition of multidrug resistance-associated protein 2 (MRP2) activity by the contraceptive nomegestrol acetate in HepG2 and Caco-2 cells; Elsevier Science; European Journal Of Pharmaceutical Sciences; 122; 9-2018; 205-2130928-0987CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0928098718303154?via%3Dihubinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.ejps.2018.07.017info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:26:15Zoai:ri.conicet.gov.ar:11336/87335instacron: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:34982025-09-29 10:26:15.839CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Inhibition of multidrug resistance-associated protein 2 (MRP2) activity by the contraceptive nomegestrol acetate in HepG2 and Caco-2 cells
title Inhibition of multidrug resistance-associated protein 2 (MRP2) activity by the contraceptive nomegestrol acetate in HepG2 and Caco-2 cells
spellingShingle Inhibition of multidrug resistance-associated protein 2 (MRP2) activity by the contraceptive nomegestrol acetate in HepG2 and Caco-2 cells
Tocchetti, Guillermo Nicolás
CACO-2 CELLS
DRUG–DRUG INTERACTIONS
HEPG2 CELLS
MULTIDRUG RESISTANCE-ASSOCIATED PROTEIN 2
NOMEGESTROL ACETATE
title_short Inhibition of multidrug resistance-associated protein 2 (MRP2) activity by the contraceptive nomegestrol acetate in HepG2 and Caco-2 cells
title_full Inhibition of multidrug resistance-associated protein 2 (MRP2) activity by the contraceptive nomegestrol acetate in HepG2 and Caco-2 cells
title_fullStr Inhibition of multidrug resistance-associated protein 2 (MRP2) activity by the contraceptive nomegestrol acetate in HepG2 and Caco-2 cells
title_full_unstemmed Inhibition of multidrug resistance-associated protein 2 (MRP2) activity by the contraceptive nomegestrol acetate in HepG2 and Caco-2 cells
title_sort Inhibition of multidrug resistance-associated protein 2 (MRP2) activity by the contraceptive nomegestrol acetate in HepG2 and Caco-2 cells
dc.creator.none.fl_str_mv Tocchetti, Guillermo Nicolás
Dominguez, Camila Juliana
Zecchinati, Felipe
Arana, Maite Rocío
Ruiz, Maria Laura
Villanueva, Silvina Stella Maris
Mottino, Aldo Domingo
Weiss, Johanna
Rigalli, Juan Pablo
author Tocchetti, Guillermo Nicolás
author_facet Tocchetti, Guillermo Nicolás
Dominguez, Camila Juliana
Zecchinati, Felipe
Arana, Maite Rocío
Ruiz, Maria Laura
Villanueva, Silvina Stella Maris
Mottino, Aldo Domingo
Weiss, Johanna
Rigalli, Juan Pablo
author_role author
author2 Dominguez, Camila Juliana
Zecchinati, Felipe
Arana, Maite Rocío
Ruiz, Maria Laura
Villanueva, Silvina Stella Maris
Mottino, Aldo Domingo
Weiss, Johanna
Rigalli, Juan Pablo
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv CACO-2 CELLS
DRUG–DRUG INTERACTIONS
HEPG2 CELLS
MULTIDRUG RESISTANCE-ASSOCIATED PROTEIN 2
NOMEGESTROL ACETATE
topic CACO-2 CELLS
DRUG–DRUG INTERACTIONS
HEPG2 CELLS
MULTIDRUG RESISTANCE-ASSOCIATED PROTEIN 2
NOMEGESTROL ACETATE
purl_subject.fl_str_mv https://purl.org/becyt/ford/3.1
https://purl.org/becyt/ford/3
dc.description.none.fl_txt_mv Multidrug resistance-associated protein 2 (MRP2) plays a key role in hepatic and intestinal disposition of endo- and xenobiotics. Several therapeutic agents modulate MRP2 activity resulting in pharmacological interactions. Nomegestrol acetate (NMGA) is a progestogen increasingly used in contraceptive formulations. The aim of this work was to evaluate the effect of NMGA on MRP2 activity in HepG2 and Caco-2 cells as models of human hepatocytes and enterocytes, respectively. NMGA (5, 50 and 500 nM; 48 h) decreased MRP2-mediated transport of 2,4-dinitrophenyl-S-glutathione in HepG2 cells, with no effect on MRP2 protein expression. Acute exposure (1 h) to the same concentrations of NMGA failed to affect MRP2 activity, ruling out an inhibitory action directly induced by the drug. In contrast, acute incubation with a lysate of HepG2 cells pre-treated with NMGA, containing potential metabolites, reproduced MRP2 inhibition. Preincubation of lysates with sulfatase but not with β-glucuronidase abolished the inhibitory action, strongly suggesting participation of NMGA sulfated derivatives. Western blot studies in plasma vs. intracellular membrane fractions ruled out internalization of MRP2 to be responsible for the impairment of transport activity. MRP2-mediated transport of 5(6)-carboxy-2′,7′-dichlorofluorescein was not affected in Caco-2 cells incubated for 48 h with either 5, 50 or 500 nM NMGA. Conversely, acute exposure (1 h) of Caco-2 cells to NMGA-treated HepG2 lysates decreased MRP2 activity, being this effect also prevented by pre-treatment of the lysates with sulfatase. Taken together, these findings demonstrate an inhibitory effect of NMGA sulfated metabolites on hepatic and intestinal MRP2 function. Extrapolated to the in vivo situation, they suggest the possibility of pharmacological interactions with coadministered drugs.
Fil: Tocchetti, Guillermo Nicolás. University of Heidelberg; Alemania. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Fisiología Experimental. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Fisiología Experimental; Argentina
Fil: Dominguez, Camila Juliana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Fisiología Experimental. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Fisiología Experimental; Argentina
Fil: Zecchinati, Felipe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Fisiología Experimental. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Fisiología Experimental; Argentina
Fil: Arana, Maite Rocío. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Fisiología Experimental. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Fisiología Experimental; Argentina
Fil: Ruiz, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Fisiología Experimental. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Fisiología Experimental; Argentina
Fil: Villanueva, Silvina Stella Maris. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Fisiología Experimental. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Fisiología Experimental; Argentina
Fil: Mottino, Aldo Domingo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Fisiología Experimental. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Fisiología Experimental; Argentina
Fil: Weiss, Johanna. University of Heidelberg; Alemania
Fil: Rigalli, Juan Pablo. University of Heidelberg; Alemania. Radboud Universiteit Nijmegen; Países Bajos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description Multidrug resistance-associated protein 2 (MRP2) plays a key role in hepatic and intestinal disposition of endo- and xenobiotics. Several therapeutic agents modulate MRP2 activity resulting in pharmacological interactions. Nomegestrol acetate (NMGA) is a progestogen increasingly used in contraceptive formulations. The aim of this work was to evaluate the effect of NMGA on MRP2 activity in HepG2 and Caco-2 cells as models of human hepatocytes and enterocytes, respectively. NMGA (5, 50 and 500 nM; 48 h) decreased MRP2-mediated transport of 2,4-dinitrophenyl-S-glutathione in HepG2 cells, with no effect on MRP2 protein expression. Acute exposure (1 h) to the same concentrations of NMGA failed to affect MRP2 activity, ruling out an inhibitory action directly induced by the drug. In contrast, acute incubation with a lysate of HepG2 cells pre-treated with NMGA, containing potential metabolites, reproduced MRP2 inhibition. Preincubation of lysates with sulfatase but not with β-glucuronidase abolished the inhibitory action, strongly suggesting participation of NMGA sulfated derivatives. Western blot studies in plasma vs. intracellular membrane fractions ruled out internalization of MRP2 to be responsible for the impairment of transport activity. MRP2-mediated transport of 5(6)-carboxy-2′,7′-dichlorofluorescein was not affected in Caco-2 cells incubated for 48 h with either 5, 50 or 500 nM NMGA. Conversely, acute exposure (1 h) of Caco-2 cells to NMGA-treated HepG2 lysates decreased MRP2 activity, being this effect also prevented by pre-treatment of the lysates with sulfatase. Taken together, these findings demonstrate an inhibitory effect of NMGA sulfated metabolites on hepatic and intestinal MRP2 function. Extrapolated to the in vivo situation, they suggest the possibility of pharmacological interactions with coadministered drugs.
publishDate 2018
dc.date.none.fl_str_mv 2018-09
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/11336/87335
Tocchetti, Guillermo Nicolás; Dominguez, Camila Juliana; Zecchinati, Felipe; Arana, Maite Rocío; Ruiz, Maria Laura; et al.; Inhibition of multidrug resistance-associated protein 2 (MRP2) activity by the contraceptive nomegestrol acetate in HepG2 and Caco-2 cells; Elsevier Science; European Journal Of Pharmaceutical Sciences; 122; 9-2018; 205-213
0928-0987
CONICET Digital
CONICET
url http://hdl.handle.net/11336/87335
identifier_str_mv Tocchetti, Guillermo Nicolás; Dominguez, Camila Juliana; Zecchinati, Felipe; Arana, Maite Rocío; Ruiz, Maria Laura; et al.; Inhibition of multidrug resistance-associated protein 2 (MRP2) activity by the contraceptive nomegestrol acetate in HepG2 and Caco-2 cells; Elsevier Science; European Journal Of Pharmaceutical Sciences; 122; 9-2018; 205-213
0928-0987
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0928098718303154?via%3Dihub
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ejps.2018.07.017
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
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dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
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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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