Metformin improves ovarian follicle dynamics by reducing theca cell proliferation and CYP-17 expression in an androgenized rat model
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNIFESP |
Texto Completo: | https://repositorio.unifesp.br/handle/11600/55926 http://dx.doi.org/10.1186/s13048-018-0392-1 |
Resumo: | Background: Metformin influences insulin receptor signaling, which might interfere with the proliferation of ovarian follicular structures and steroidogenesis. We hypothesize that reductions in glucose and insulin levels might interfere with CYP-17 expression and histomorphological changes in an androgenized rat model. The aim of this study was to analyze the effect of metformin on CYP-17 expression, follicular dynamics, and proliferative parameters in neonatally androgenized female rats. Methods: Thirty-six newborn rats were randomly allocated to the following three groups on the third day of life: control (CG, n = 12), androgenized (GA, n = 12), and androgenized + metformin (GAmet, n = 12). The GA and GAmet animals were administered 0.1 mL of testosterone propionate (1.25 mg/animal) diluted in castor oil (vehicle) in a single dose |
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Mahamed, Roberta Rassi [UNIFESP]Maganhin, Carla CristinaSasso, Gisela Rodrigues Silva [UNIFESP]Simões, Manuel de Jesus [UNIFESP]Baracat, Maria Cândida Pinheiro [UNIFESP]Baracat, Edmund Chada [UNIFESP]Soares Junior, Jose Maria [UNIFESP]2020-07-20T16:31:23Z2020-07-20T16:31:23Z2018Journal Of Ovarian Research. London, v. 11, p. -, 2018.1757-2215https://repositorio.unifesp.br/handle/11600/55926http://dx.doi.org/10.1186/s13048-018-0392-1WOS000426677200001.pdf10.1186/s13048-018-0392-1WOS:000426677200001Background: Metformin influences insulin receptor signaling, which might interfere with the proliferation of ovarian follicular structures and steroidogenesis. We hypothesize that reductions in glucose and insulin levels might interfere with CYP-17 expression and histomorphological changes in an androgenized rat model. The aim of this study was to analyze the effect of metformin on CYP-17 expression, follicular dynamics, and proliferative parameters in neonatally androgenized female rats. Methods: Thirty-six newborn rats were randomly allocated to the following three groups on the third day of life: control (CG, n = 12), androgenized (GA, n = 12), and androgenized + metformin (GAmet, n = 12). The GA and GAmet animals were administered 0.1 mL of testosterone propionate (1.25 mg/animal) diluted in castor oil (vehicle) in a single dosethe CG rats received a subcutaneous injection of the vehicle in the dorsum. After 90 days, gavage treatment was initiated, distilled water was administered to the CG and GA rats, and metformin (150 mg/kg) was administered to the GAmet animals. The treatment was administered daily for six weeks. Following anesthesia, blood was drawn for biochemical measurements, and the ovaries were removed for histological and immunohistochemical analyses of Ki67, VEGFA and CYP17 expression. The glucose and insulin levels were also measured. Results: The comparison of the GA and GAmet animals revealed that metformin decreased the weight as well as the glucose and insulin levels, slowed the proliferation of the theca interna and interstitial cells, as evidenced by Ki-67 and VEGF-A expression, and diminished CYP17 expression in the analyzed ovarian structures. In addition, metformin reduced the number of degenerating follicles and interstitial cells and improved angiogenesis. Conclusion: Metformin improves the carbohydrate metabolism, reduces proliferation, and decreases CYP-17 expression in the follicular structures of androgenized rats.Sao Paulo Research Foundation (FAPESP)Univ Fed Sao Paulo, Escola Paulista Med, Dept Gynecol, Sao Paulo, BrazilUniv Sao Paulo, Fac Med, Hosp Clin,Dept Obstet & Ginecol, Lab Mol & Struct Gynecol LIM 58,Disciplina Gineco, Ave Dr Arnaldo,455 Sala 2113, BR-01246903 Sao Paulo, SP, BrazilUniv Fed Sao Paulo, Escola Paulista Med, Dept Morphol & Genet, Sao Paulo, BrazilUniv Fed Sao Paulo, Escola Paulista Med, Dept Gynecol, Sao Paulo, BrazilUniv Fed Sao Paulo, Escola Paulista Med, Dept Morphol & Genet, Sao Paulo, BrazilFAPESP: 2009/54019-9Web of Science-engBiomed Central LtdJournal Of Ovarian ResearchMetforminSteroidogenesisOvaryRatMetformin improves ovarian follicle dynamics by reducing theca cell proliferation and CYP-17 expression in an androgenized rat modelinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleLondonv. 11info:eu-repo/semantics/openAccessreponame:Repositório Institucional da UNIFESPinstname:Universidade Federal de São Paulo (UNIFESP)instacron:UNIFESPORIGINALWOS000426677200001.pdfapplication/pdf1504737${dspace.ui.url}/bitstream/11600/55926/1/WOS000426677200001.pdfbf41908c4cf8f79de4ba9a750c4856a5MD51open accessTEXTWOS000426677200001.pdf.txtWOS000426677200001.pdf.txtExtracted texttext/plain43499${dspace.ui.url}/bitstream/11600/55926/2/WOS000426677200001.pdf.txt761e70b1fe99b76e586c4bdc32ce8bfcMD52open accessTHUMBNAILWOS000426677200001.pdf.jpgWOS000426677200001.pdf.jpgIM Thumbnailimage/jpeg6763${dspace.ui.url}/bitstream/11600/55926/4/WOS000426677200001.pdf.jpgb120874ddcfce169d554138d215f6c8eMD54open access11600/559262022-08-01 01:50:16.052open accessoai:repositorio.unifesp.br:11600/55926Repositório InstitucionalPUBhttp://www.repositorio.unifesp.br/oai/requestopendoar:34652023-05-25T12:14:20.548565Repositório Institucional da UNIFESP - Universidade Federal de São Paulo (UNIFESP)false |
dc.title.en.fl_str_mv |
Metformin improves ovarian follicle dynamics by reducing theca cell proliferation and CYP-17 expression in an androgenized rat model |
title |
Metformin improves ovarian follicle dynamics by reducing theca cell proliferation and CYP-17 expression in an androgenized rat model |
spellingShingle |
Metformin improves ovarian follicle dynamics by reducing theca cell proliferation and CYP-17 expression in an androgenized rat model Mahamed, Roberta Rassi [UNIFESP] Metformin Steroidogenesis Ovary Rat |
title_short |
Metformin improves ovarian follicle dynamics by reducing theca cell proliferation and CYP-17 expression in an androgenized rat model |
title_full |
Metformin improves ovarian follicle dynamics by reducing theca cell proliferation and CYP-17 expression in an androgenized rat model |
title_fullStr |
Metformin improves ovarian follicle dynamics by reducing theca cell proliferation and CYP-17 expression in an androgenized rat model |
title_full_unstemmed |
Metformin improves ovarian follicle dynamics by reducing theca cell proliferation and CYP-17 expression in an androgenized rat model |
title_sort |
Metformin improves ovarian follicle dynamics by reducing theca cell proliferation and CYP-17 expression in an androgenized rat model |
author |
Mahamed, Roberta Rassi [UNIFESP] |
author_facet |
Mahamed, Roberta Rassi [UNIFESP] Maganhin, Carla Cristina Sasso, Gisela Rodrigues Silva [UNIFESP] Simões, Manuel de Jesus [UNIFESP] Baracat, Maria Cândida Pinheiro [UNIFESP] Baracat, Edmund Chada [UNIFESP] Soares Junior, Jose Maria [UNIFESP] |
author_role |
author |
author2 |
Maganhin, Carla Cristina Sasso, Gisela Rodrigues Silva [UNIFESP] Simões, Manuel de Jesus [UNIFESP] Baracat, Maria Cândida Pinheiro [UNIFESP] Baracat, Edmund Chada [UNIFESP] Soares Junior, Jose Maria [UNIFESP] |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Mahamed, Roberta Rassi [UNIFESP] Maganhin, Carla Cristina Sasso, Gisela Rodrigues Silva [UNIFESP] Simões, Manuel de Jesus [UNIFESP] Baracat, Maria Cândida Pinheiro [UNIFESP] Baracat, Edmund Chada [UNIFESP] Soares Junior, Jose Maria [UNIFESP] |
dc.subject.eng.fl_str_mv |
Metformin Steroidogenesis Ovary Rat |
topic |
Metformin Steroidogenesis Ovary Rat |
description |
Background: Metformin influences insulin receptor signaling, which might interfere with the proliferation of ovarian follicular structures and steroidogenesis. We hypothesize that reductions in glucose and insulin levels might interfere with CYP-17 expression and histomorphological changes in an androgenized rat model. The aim of this study was to analyze the effect of metformin on CYP-17 expression, follicular dynamics, and proliferative parameters in neonatally androgenized female rats. Methods: Thirty-six newborn rats were randomly allocated to the following three groups on the third day of life: control (CG, n = 12), androgenized (GA, n = 12), and androgenized + metformin (GAmet, n = 12). The GA and GAmet animals were administered 0.1 mL of testosterone propionate (1.25 mg/animal) diluted in castor oil (vehicle) in a single dose |
publishDate |
2018 |
dc.date.issued.fl_str_mv |
2018 |
dc.date.accessioned.fl_str_mv |
2020-07-20T16:31:23Z |
dc.date.available.fl_str_mv |
2020-07-20T16:31:23Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
Journal Of Ovarian Research. London, v. 11, p. -, 2018. |
dc.identifier.uri.fl_str_mv |
https://repositorio.unifesp.br/handle/11600/55926 http://dx.doi.org/10.1186/s13048-018-0392-1 |
dc.identifier.issn.none.fl_str_mv |
1757-2215 |
dc.identifier.file.none.fl_str_mv |
WOS000426677200001.pdf |
dc.identifier.doi.none.fl_str_mv |
10.1186/s13048-018-0392-1 |
dc.identifier.wos.none.fl_str_mv |
WOS:000426677200001 |
identifier_str_mv |
Journal Of Ovarian Research. London, v. 11, p. -, 2018. 1757-2215 WOS000426677200001.pdf 10.1186/s13048-018-0392-1 WOS:000426677200001 |
url |
https://repositorio.unifesp.br/handle/11600/55926 http://dx.doi.org/10.1186/s13048-018-0392-1 |
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eng |
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eng |
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Journal Of Ovarian Research |
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openAccess |
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- |
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London |
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Biomed Central Ltd |
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Biomed Central Ltd |
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