Effect of exogenous melatonin on embryo viability and uterine environment in undernourished ewes
- Autores
- Vazquez, Maria Isabel; Forcada, F.; Sosa, C.; Casao, A.; Sartore, I.; Fernandez Foren, A.; Meikle, A.; Abecia, J. C.
- Año de publicación
- 2013
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The effect of exogenous melatonin on embryo viability in undernourished ewes was investigated. At lambing, 24 ewes were treated (+MEL) or not (−MEL) with a melatonin implant. After 45 days, both groups were fed to provide 1.5 (Control, C) or 0.5 (Low, L) times daily maintenance requirements, so that experimental groups were: C−MEL, C+MEL, L−MEL and L+MEL. Ewes were mated (Day 0) and on Day 5 embryos were recovered and classified according to their developmental stage and morphology. Ovaries were used for in vitro fertilization and uterine horns were processed to study progesterone and oestrogen receptor (PR and ERα) expression by inmunohistochemistry. After 21 days, groups L−MEL and L+MEL had an average weight loss of 10 kg (P < 0.001). Number of viable embryos per CL from L+MEL (0.50 ± 0.2) was higher than from other groups (P < 0.05). Overall, the melatonin effect was particularly evident in undernourished ewes, increasing both viability (L+MEL: 65%; L−MEL: 25%; P < 0.05) and pregnancy rates (L+MEL: 66.6%; L−MEL: 16.6%; P < 0.05). Neither nutrition and melatonin nor their interaction had a significant effect on the in vitro oocyte development. Melatonin treatment tended to increase the percentage of positive cells to PR in deep glandular epithelium, independently of diet (P = 0.09), and the greatest staining intensity of PR was observed in the luminal and superficial glandular epithelia (P < 0.0001). In conclusion, melatonin implants at lambing during the breeding season improve the viability of embryos recovered from undernourished ewes, although this effect seems not to be mediated at the oocyte competence level.
Fil: Vazquez, Maria Isabel. Universidad de Zaragoza; España. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Forcada, F.. Universidad de Zaragoza; España
Fil: Sosa, C.. Universidad de Zaragoza; España
Fil: Casao, A.. Universidad de Zaragoza; España
Fil: Sartore, I.. Universidad de la República; Uruguay
Fil: Fernandez Foren, A.. Universidad de la República; Uruguay
Fil: Meikle, A.. Universidad de la República; Uruguay
Fil: Abecia, J. C.. Universidad de Zaragoza; España - Materia
-
Sheep
Embryo
Undernutrition
Melatonin
Oocyte
Endometrial Receptors - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/23994
Ver los metadatos del registro completo
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oai:ri.conicet.gov.ar:11336/23994 |
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3498 |
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CONICET Digital (CONICET) |
spelling |
Effect of exogenous melatonin on embryo viability and uterine environment in undernourished ewesVazquez, Maria IsabelForcada, F.Sosa, C.Casao, A.Sartore, I.Fernandez Foren, A.Meikle, A.Abecia, J. C.SheepEmbryoUndernutritionMelatoninOocyteEndometrial Receptorshttps://purl.org/becyt/ford/4.4https://purl.org/becyt/ford/4The effect of exogenous melatonin on embryo viability in undernourished ewes was investigated. At lambing, 24 ewes were treated (+MEL) or not (−MEL) with a melatonin implant. After 45 days, both groups were fed to provide 1.5 (Control, C) or 0.5 (Low, L) times daily maintenance requirements, so that experimental groups were: C−MEL, C+MEL, L−MEL and L+MEL. Ewes were mated (Day 0) and on Day 5 embryos were recovered and classified according to their developmental stage and morphology. Ovaries were used for in vitro fertilization and uterine horns were processed to study progesterone and oestrogen receptor (PR and ERα) expression by inmunohistochemistry. After 21 days, groups L−MEL and L+MEL had an average weight loss of 10 kg (P < 0.001). Number of viable embryos per CL from L+MEL (0.50 ± 0.2) was higher than from other groups (P < 0.05). Overall, the melatonin effect was particularly evident in undernourished ewes, increasing both viability (L+MEL: 65%; L−MEL: 25%; P < 0.05) and pregnancy rates (L+MEL: 66.6%; L−MEL: 16.6%; P < 0.05). Neither nutrition and melatonin nor their interaction had a significant effect on the in vitro oocyte development. Melatonin treatment tended to increase the percentage of positive cells to PR in deep glandular epithelium, independently of diet (P = 0.09), and the greatest staining intensity of PR was observed in the luminal and superficial glandular epithelia (P < 0.0001). In conclusion, melatonin implants at lambing during the breeding season improve the viability of embryos recovered from undernourished ewes, although this effect seems not to be mediated at the oocyte competence level.Fil: Vazquez, Maria Isabel. Universidad de Zaragoza; España. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Forcada, F.. Universidad de Zaragoza; EspañaFil: Sosa, C.. Universidad de Zaragoza; EspañaFil: Casao, A.. Universidad de Zaragoza; EspañaFil: Sartore, I.. Universidad de la República; UruguayFil: Fernandez Foren, A.. Universidad de la República; UruguayFil: Meikle, A.. Universidad de la República; UruguayFil: Abecia, J. C.. Universidad de Zaragoza; EspañaElsevier Science2013-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/23994Vazquez, Maria Isabel; Forcada, F.; Sosa, C.; Casao, A.; Sartore, I.; et al.; Effect of exogenous melatonin on embryo viability and uterine environment in undernourished ewes; Elsevier Science; Animal Reproduction Science; 141; 1-2; 7-2013; 52-610378-4320CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.anireprosci.2013.07.007info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0378432013002145info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:32:15Zoai:ri.conicet.gov.ar:11336/23994instacron: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 10:32:15.702CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Effect of exogenous melatonin on embryo viability and uterine environment in undernourished ewes |
title |
Effect of exogenous melatonin on embryo viability and uterine environment in undernourished ewes |
spellingShingle |
Effect of exogenous melatonin on embryo viability and uterine environment in undernourished ewes Vazquez, Maria Isabel Sheep Embryo Undernutrition Melatonin Oocyte Endometrial Receptors |
title_short |
Effect of exogenous melatonin on embryo viability and uterine environment in undernourished ewes |
title_full |
Effect of exogenous melatonin on embryo viability and uterine environment in undernourished ewes |
title_fullStr |
Effect of exogenous melatonin on embryo viability and uterine environment in undernourished ewes |
title_full_unstemmed |
Effect of exogenous melatonin on embryo viability and uterine environment in undernourished ewes |
title_sort |
Effect of exogenous melatonin on embryo viability and uterine environment in undernourished ewes |
dc.creator.none.fl_str_mv |
Vazquez, Maria Isabel Forcada, F. Sosa, C. Casao, A. Sartore, I. Fernandez Foren, A. Meikle, A. Abecia, J. C. |
author |
Vazquez, Maria Isabel |
author_facet |
Vazquez, Maria Isabel Forcada, F. Sosa, C. Casao, A. Sartore, I. Fernandez Foren, A. Meikle, A. Abecia, J. C. |
author_role |
author |
author2 |
Forcada, F. Sosa, C. Casao, A. Sartore, I. Fernandez Foren, A. Meikle, A. Abecia, J. C. |
author2_role |
author author author author author author author |
dc.subject.none.fl_str_mv |
Sheep Embryo Undernutrition Melatonin Oocyte Endometrial Receptors |
topic |
Sheep Embryo Undernutrition Melatonin Oocyte Endometrial Receptors |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/4.4 https://purl.org/becyt/ford/4 |
dc.description.none.fl_txt_mv |
The effect of exogenous melatonin on embryo viability in undernourished ewes was investigated. At lambing, 24 ewes were treated (+MEL) or not (−MEL) with a melatonin implant. After 45 days, both groups were fed to provide 1.5 (Control, C) or 0.5 (Low, L) times daily maintenance requirements, so that experimental groups were: C−MEL, C+MEL, L−MEL and L+MEL. Ewes were mated (Day 0) and on Day 5 embryos were recovered and classified according to their developmental stage and morphology. Ovaries were used for in vitro fertilization and uterine horns were processed to study progesterone and oestrogen receptor (PR and ERα) expression by inmunohistochemistry. After 21 days, groups L−MEL and L+MEL had an average weight loss of 10 kg (P < 0.001). Number of viable embryos per CL from L+MEL (0.50 ± 0.2) was higher than from other groups (P < 0.05). Overall, the melatonin effect was particularly evident in undernourished ewes, increasing both viability (L+MEL: 65%; L−MEL: 25%; P < 0.05) and pregnancy rates (L+MEL: 66.6%; L−MEL: 16.6%; P < 0.05). Neither nutrition and melatonin nor their interaction had a significant effect on the in vitro oocyte development. Melatonin treatment tended to increase the percentage of positive cells to PR in deep glandular epithelium, independently of diet (P = 0.09), and the greatest staining intensity of PR was observed in the luminal and superficial glandular epithelia (P < 0.0001). In conclusion, melatonin implants at lambing during the breeding season improve the viability of embryos recovered from undernourished ewes, although this effect seems not to be mediated at the oocyte competence level. Fil: Vazquez, Maria Isabel. Universidad de Zaragoza; España. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Forcada, F.. Universidad de Zaragoza; España Fil: Sosa, C.. Universidad de Zaragoza; España Fil: Casao, A.. Universidad de Zaragoza; España Fil: Sartore, I.. Universidad de la República; Uruguay Fil: Fernandez Foren, A.. Universidad de la República; Uruguay Fil: Meikle, A.. Universidad de la República; Uruguay Fil: Abecia, J. C.. Universidad de Zaragoza; España |
description |
The effect of exogenous melatonin on embryo viability in undernourished ewes was investigated. At lambing, 24 ewes were treated (+MEL) or not (−MEL) with a melatonin implant. After 45 days, both groups were fed to provide 1.5 (Control, C) or 0.5 (Low, L) times daily maintenance requirements, so that experimental groups were: C−MEL, C+MEL, L−MEL and L+MEL. Ewes were mated (Day 0) and on Day 5 embryos were recovered and classified according to their developmental stage and morphology. Ovaries were used for in vitro fertilization and uterine horns were processed to study progesterone and oestrogen receptor (PR and ERα) expression by inmunohistochemistry. After 21 days, groups L−MEL and L+MEL had an average weight loss of 10 kg (P < 0.001). Number of viable embryos per CL from L+MEL (0.50 ± 0.2) was higher than from other groups (P < 0.05). Overall, the melatonin effect was particularly evident in undernourished ewes, increasing both viability (L+MEL: 65%; L−MEL: 25%; P < 0.05) and pregnancy rates (L+MEL: 66.6%; L−MEL: 16.6%; P < 0.05). Neither nutrition and melatonin nor their interaction had a significant effect on the in vitro oocyte development. Melatonin treatment tended to increase the percentage of positive cells to PR in deep glandular epithelium, independently of diet (P = 0.09), and the greatest staining intensity of PR was observed in the luminal and superficial glandular epithelia (P < 0.0001). In conclusion, melatonin implants at lambing during the breeding season improve the viability of embryos recovered from undernourished ewes, although this effect seems not to be mediated at the oocyte competence level. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-07 |
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/11336/23994 Vazquez, Maria Isabel; Forcada, F.; Sosa, C.; Casao, A.; Sartore, I.; et al.; Effect of exogenous melatonin on embryo viability and uterine environment in undernourished ewes; Elsevier Science; Animal Reproduction Science; 141; 1-2; 7-2013; 52-61 0378-4320 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/23994 |
identifier_str_mv |
Vazquez, Maria Isabel; Forcada, F.; Sosa, C.; Casao, A.; Sartore, I.; et al.; Effect of exogenous melatonin on embryo viability and uterine environment in undernourished ewes; Elsevier Science; Animal Reproduction Science; 141; 1-2; 7-2013; 52-61 0378-4320 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.anireprosci.2013.07.007 info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0378432013002145 |
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 |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
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) |
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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1844614335927681024 |
score |
13.070432 |