Depolarization of the tegument precedes morphological alterations in Echinococcus granulosus protoscoleces incubated with ivermectin
- Autores
- Pérez Serrano, Jorge; Grossmann, Claudio; Urrea París, María Ángeles; Denegri, Guillermo Maria; Casado, Nieves Maria Claudia; Rodriguez Caabeiro, Filomena
- Año de publicación
- 2001
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The nematocidal activity of ivermectin (IVM) largely arises from its activity as a potent agonist of muscular and neuronal glutamate-gated chloride channels. A cestocidal effect has also been suggested following in vitro treatments, but the molecular basis of this activity is not clear. We studied the effect of IVM on the metacestode stage of the tapeworm Echinococcus granulosus by assessing the viability, ultrastructure, and tegumental membrane potential as a function of drug concentration and incubation time. Concentrations of 0.1 and 1.0 μg/ml of IVM had no effect on any of these three parameters for up to 6 days of treatment. A concentration of 10 μg/ml, however, elicited a sequence of alterations that started with a ∼20-mV depolarization of the tegumental membrane, and was followed by rostellar disorganization, rigid paralysis and, eventually, loss of viability. It is likely that the IVM-induced depolarization of the tegument acts as the signal that initiates the cascade of degenerative processes that leads to the parasite's death. This would place the tegument as the primary target of action of IVM on cestodes. As an appropriate chemotherapy for the hydatid disease is still lacking, the cestocidal effect of IVM reported here is worth considering.
Fil: Pérez Serrano, Jorge. Universidad de Alcalá; España
Fil: Grossmann, Claudio. State University of New York; Estados Unidos
Fil: Urrea París, María Ángeles. Universidad de Alcalá; España
Fil: Denegri, Guillermo Maria. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Biología; Argentina
Fil: Casado, Nieves Maria Claudia. Universidad de Alcalá; España
Fil: Rodriguez Caabeiro, Filomena. Universidad de Alcalá; España - Materia
-
Membrane Potential
Drug Concentration
Incubation Time
Molecular Basis
Primary Target - 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:11336/40111
Ver los metadatos del registro completo
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oai:ri.conicet.gov.ar:11336/40111 |
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spelling |
Depolarization of the tegument precedes morphological alterations in Echinococcus granulosus protoscoleces incubated with ivermectinPérez Serrano, JorgeGrossmann, ClaudioUrrea París, María ÁngelesDenegri, Guillermo MariaCasado, Nieves Maria ClaudiaRodriguez Caabeiro, FilomenaMembrane PotentialDrug ConcentrationIncubation TimeMolecular BasisPrimary Targethttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The nematocidal activity of ivermectin (IVM) largely arises from its activity as a potent agonist of muscular and neuronal glutamate-gated chloride channels. A cestocidal effect has also been suggested following in vitro treatments, but the molecular basis of this activity is not clear. We studied the effect of IVM on the metacestode stage of the tapeworm Echinococcus granulosus by assessing the viability, ultrastructure, and tegumental membrane potential as a function of drug concentration and incubation time. Concentrations of 0.1 and 1.0 μg/ml of IVM had no effect on any of these three parameters for up to 6 days of treatment. A concentration of 10 μg/ml, however, elicited a sequence of alterations that started with a ∼20-mV depolarization of the tegumental membrane, and was followed by rostellar disorganization, rigid paralysis and, eventually, loss of viability. It is likely that the IVM-induced depolarization of the tegument acts as the signal that initiates the cascade of degenerative processes that leads to the parasite's death. This would place the tegument as the primary target of action of IVM on cestodes. As an appropriate chemotherapy for the hydatid disease is still lacking, the cestocidal effect of IVM reported here is worth considering.Fil: Pérez Serrano, Jorge. Universidad de Alcalá; EspañaFil: Grossmann, Claudio. State University of New York; Estados UnidosFil: Urrea París, María Ángeles. Universidad de Alcalá; EspañaFil: Denegri, Guillermo Maria. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Biología; ArgentinaFil: Casado, Nieves Maria Claudia. Universidad de Alcalá; EspañaFil: Rodriguez Caabeiro, Filomena. Universidad de Alcalá; EspañaSpringer2001-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/40111Pérez Serrano, Jorge; Grossmann, Claudio; Urrea París, María Ángeles; Denegri, Guillermo Maria; Casado, Nieves Maria Claudia; et al.; Depolarization of the tegument precedes morphological alterations in Echinococcus granulosus protoscoleces incubated with ivermectin; Springer; Parasitology Research; 87; 10; 12-2001; 804-8070932-0113CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs004360100435info:eu-repo/semantics/altIdentifier/doi/10.1007/s004360100435info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:55:28Zoai:ri.conicet.gov.ar:11336/40111instacron: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 09:55:28.555CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Depolarization of the tegument precedes morphological alterations in Echinococcus granulosus protoscoleces incubated with ivermectin |
title |
Depolarization of the tegument precedes morphological alterations in Echinococcus granulosus protoscoleces incubated with ivermectin |
spellingShingle |
Depolarization of the tegument precedes morphological alterations in Echinococcus granulosus protoscoleces incubated with ivermectin Pérez Serrano, Jorge Membrane Potential Drug Concentration Incubation Time Molecular Basis Primary Target |
title_short |
Depolarization of the tegument precedes morphological alterations in Echinococcus granulosus protoscoleces incubated with ivermectin |
title_full |
Depolarization of the tegument precedes morphological alterations in Echinococcus granulosus protoscoleces incubated with ivermectin |
title_fullStr |
Depolarization of the tegument precedes morphological alterations in Echinococcus granulosus protoscoleces incubated with ivermectin |
title_full_unstemmed |
Depolarization of the tegument precedes morphological alterations in Echinococcus granulosus protoscoleces incubated with ivermectin |
title_sort |
Depolarization of the tegument precedes morphological alterations in Echinococcus granulosus protoscoleces incubated with ivermectin |
dc.creator.none.fl_str_mv |
Pérez Serrano, Jorge Grossmann, Claudio Urrea París, María Ángeles Denegri, Guillermo Maria Casado, Nieves Maria Claudia Rodriguez Caabeiro, Filomena |
author |
Pérez Serrano, Jorge |
author_facet |
Pérez Serrano, Jorge Grossmann, Claudio Urrea París, María Ángeles Denegri, Guillermo Maria Casado, Nieves Maria Claudia Rodriguez Caabeiro, Filomena |
author_role |
author |
author2 |
Grossmann, Claudio Urrea París, María Ángeles Denegri, Guillermo Maria Casado, Nieves Maria Claudia Rodriguez Caabeiro, Filomena |
author2_role |
author author author author author |
dc.subject.none.fl_str_mv |
Membrane Potential Drug Concentration Incubation Time Molecular Basis Primary Target |
topic |
Membrane Potential Drug Concentration Incubation Time Molecular Basis Primary Target |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The nematocidal activity of ivermectin (IVM) largely arises from its activity as a potent agonist of muscular and neuronal glutamate-gated chloride channels. A cestocidal effect has also been suggested following in vitro treatments, but the molecular basis of this activity is not clear. We studied the effect of IVM on the metacestode stage of the tapeworm Echinococcus granulosus by assessing the viability, ultrastructure, and tegumental membrane potential as a function of drug concentration and incubation time. Concentrations of 0.1 and 1.0 μg/ml of IVM had no effect on any of these three parameters for up to 6 days of treatment. A concentration of 10 μg/ml, however, elicited a sequence of alterations that started with a ∼20-mV depolarization of the tegumental membrane, and was followed by rostellar disorganization, rigid paralysis and, eventually, loss of viability. It is likely that the IVM-induced depolarization of the tegument acts as the signal that initiates the cascade of degenerative processes that leads to the parasite's death. This would place the tegument as the primary target of action of IVM on cestodes. As an appropriate chemotherapy for the hydatid disease is still lacking, the cestocidal effect of IVM reported here is worth considering. Fil: Pérez Serrano, Jorge. Universidad de Alcalá; España Fil: Grossmann, Claudio. State University of New York; Estados Unidos Fil: Urrea París, María Ángeles. Universidad de Alcalá; España Fil: Denegri, Guillermo Maria. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Biología; Argentina Fil: Casado, Nieves Maria Claudia. Universidad de Alcalá; España Fil: Rodriguez Caabeiro, Filomena. Universidad de Alcalá; España |
description |
The nematocidal activity of ivermectin (IVM) largely arises from its activity as a potent agonist of muscular and neuronal glutamate-gated chloride channels. A cestocidal effect has also been suggested following in vitro treatments, but the molecular basis of this activity is not clear. We studied the effect of IVM on the metacestode stage of the tapeworm Echinococcus granulosus by assessing the viability, ultrastructure, and tegumental membrane potential as a function of drug concentration and incubation time. Concentrations of 0.1 and 1.0 μg/ml of IVM had no effect on any of these three parameters for up to 6 days of treatment. A concentration of 10 μg/ml, however, elicited a sequence of alterations that started with a ∼20-mV depolarization of the tegumental membrane, and was followed by rostellar disorganization, rigid paralysis and, eventually, loss of viability. It is likely that the IVM-induced depolarization of the tegument acts as the signal that initiates the cascade of degenerative processes that leads to the parasite's death. This would place the tegument as the primary target of action of IVM on cestodes. As an appropriate chemotherapy for the hydatid disease is still lacking, the cestocidal effect of IVM reported here is worth considering. |
publishDate |
2001 |
dc.date.none.fl_str_mv |
2001-12 |
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/11336/40111 Pérez Serrano, Jorge; Grossmann, Claudio; Urrea París, María Ángeles; Denegri, Guillermo Maria; Casado, Nieves Maria Claudia; et al.; Depolarization of the tegument precedes morphological alterations in Echinococcus granulosus protoscoleces incubated with ivermectin; Springer; Parasitology Research; 87; 10; 12-2001; 804-807 0932-0113 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/40111 |
identifier_str_mv |
Pérez Serrano, Jorge; Grossmann, Claudio; Urrea París, María Ángeles; Denegri, Guillermo Maria; Casado, Nieves Maria Claudia; et al.; Depolarization of the tegument precedes morphological alterations in Echinococcus granulosus protoscoleces incubated with ivermectin; Springer; Parasitology Research; 87; 10; 12-2001; 804-807 0932-0113 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://link.springer.com/article/10.1007%2Fs004360100435 info:eu-repo/semantics/altIdentifier/doi/10.1007/s004360100435 |
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 |
dc.publisher.none.fl_str_mv |
Springer |
publisher.none.fl_str_mv |
Springer |
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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1844613672301756416 |
score |
13.070432 |