The influence of phytoestrogens or estrogens on the proliferation of the rat endocervical mucosa
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista da Associação Médica Brasileira (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-42302020000200174 |
Resumo: | SUMMARY INTRODUCTION Although estrogen therapy is widely used against post-menopausal symptoms, it can present adverse effects, including endometrial cancer. Soy isoflavones are considered a possible alternative to estrogen therapy. However, there are still concerns whether isoflavones exert trophic effects on the uterine cervix. OBJECTIVES To evaluate the histomorphometric and immunohistochemical alterations in the uterine cervix of ovariectomized rats treated with soy isoflavones (Iso). METHODS Fifteen adult Wistar rats were ovariectomized (Ovx) and divided into three groups: Group I (Ovx), administered with vehicle solution; Group II (OVX-Iso), administered with concentrated extract of Iso (150 mg/kg) by gavage; and Group III (OVX-E2), treated with 17β-estradiol (10 µg/kg), subcutaneously. After 30 days of treatments, the uterine cervix was fixed in 10% formaldehyde and processed for paraffin-embedding. Sections were stained with Hematoxylin and eosin for morphological and morphometric studies or subjected to immunohistochemistry for detections of Ki-67 and vascular endothelial growth factor-A (Vegf-A). The data obtained were subjected to statistical analysis (p ≤ 0.05). RESULTS We noted an atrophic uterine cervix in GI, whereas it was more voluminous in GII and even more voluminous in GIII. The thickness of the cervical mucosa was significantly higher in GIII, as compared to GI and GII. The cell proliferation (Ki-67) was significantly elevated in the estradiol and isoflavones treated groups, whereas Vegf-A immunoexpression was significantly higher in GIII, as compared to groups GII and GI. CONCLUSIONS Soy isoflavones cause less trophic and proliferative effects in the uterine cervix of rats as compared to estrogen. |
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The influence of phytoestrogens or estrogens on the proliferation of the rat endocervical mucosaCervix uteriIsoflavonesEstrogensOvariectomyRatsSUMMARY INTRODUCTION Although estrogen therapy is widely used against post-menopausal symptoms, it can present adverse effects, including endometrial cancer. Soy isoflavones are considered a possible alternative to estrogen therapy. However, there are still concerns whether isoflavones exert trophic effects on the uterine cervix. OBJECTIVES To evaluate the histomorphometric and immunohistochemical alterations in the uterine cervix of ovariectomized rats treated with soy isoflavones (Iso). METHODS Fifteen adult Wistar rats were ovariectomized (Ovx) and divided into three groups: Group I (Ovx), administered with vehicle solution; Group II (OVX-Iso), administered with concentrated extract of Iso (150 mg/kg) by gavage; and Group III (OVX-E2), treated with 17β-estradiol (10 µg/kg), subcutaneously. After 30 days of treatments, the uterine cervix was fixed in 10% formaldehyde and processed for paraffin-embedding. Sections were stained with Hematoxylin and eosin for morphological and morphometric studies or subjected to immunohistochemistry for detections of Ki-67 and vascular endothelial growth factor-A (Vegf-A). The data obtained were subjected to statistical analysis (p ≤ 0.05). RESULTS We noted an atrophic uterine cervix in GI, whereas it was more voluminous in GII and even more voluminous in GIII. The thickness of the cervical mucosa was significantly higher in GIII, as compared to GI and GII. The cell proliferation (Ki-67) was significantly elevated in the estradiol and isoflavones treated groups, whereas Vegf-A immunoexpression was significantly higher in GIII, as compared to groups GII and GI. CONCLUSIONS Soy isoflavones cause less trophic and proliferative effects in the uterine cervix of rats as compared to estrogen.Associação Médica Brasileira2020-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-42302020000200174Revista da Associação Médica Brasileira v.66 n.2 2020reponame:Revista da Associação Médica Brasileira (Online)instname:Associação Médica Brasileira (AMB)instacron:AMB10.1590/1806-9282.66.2.174info:eu-repo/semantics/openAccessFranco,Paulo CelsoSimões,Ricardo SantosCarbonel,Adriana Aparecida FerrazSasso,Gisela Rodrigues da SilvaFlorencio-Silva,RinaldoBaracat,Edmund ChadaGirão,Manoel Batista CastelloSoares Júnior,José MariaSimões,Manuel de Jesuseng2020-05-11T00:00:00Zoai:scielo:S0104-42302020000200174Revistahttps://ramb.amb.org.br/ultimas-edicoes/#https://old.scielo.br/oai/scielo-oai.php||ramb@amb.org.br1806-92820104-4230opendoar:2020-05-11T00:00Revista da Associação Médica Brasileira (Online) - Associação Médica Brasileira (AMB)false |
dc.title.none.fl_str_mv |
The influence of phytoestrogens or estrogens on the proliferation of the rat endocervical mucosa |
title |
The influence of phytoestrogens or estrogens on the proliferation of the rat endocervical mucosa |
spellingShingle |
The influence of phytoestrogens or estrogens on the proliferation of the rat endocervical mucosa Franco,Paulo Celso Cervix uteri Isoflavones Estrogens Ovariectomy Rats |
title_short |
The influence of phytoestrogens or estrogens on the proliferation of the rat endocervical mucosa |
title_full |
The influence of phytoestrogens or estrogens on the proliferation of the rat endocervical mucosa |
title_fullStr |
The influence of phytoestrogens or estrogens on the proliferation of the rat endocervical mucosa |
title_full_unstemmed |
The influence of phytoestrogens or estrogens on the proliferation of the rat endocervical mucosa |
title_sort |
The influence of phytoestrogens or estrogens on the proliferation of the rat endocervical mucosa |
author |
Franco,Paulo Celso |
author_facet |
Franco,Paulo Celso Simões,Ricardo Santos Carbonel,Adriana Aparecida Ferraz Sasso,Gisela Rodrigues da Silva Florencio-Silva,Rinaldo Baracat,Edmund Chada Girão,Manoel Batista Castello Soares Júnior,José Maria Simões,Manuel de Jesus |
author_role |
author |
author2 |
Simões,Ricardo Santos Carbonel,Adriana Aparecida Ferraz Sasso,Gisela Rodrigues da Silva Florencio-Silva,Rinaldo Baracat,Edmund Chada Girão,Manoel Batista Castello Soares Júnior,José Maria Simões,Manuel de Jesus |
author2_role |
author author author author author author author author |
dc.contributor.author.fl_str_mv |
Franco,Paulo Celso Simões,Ricardo Santos Carbonel,Adriana Aparecida Ferraz Sasso,Gisela Rodrigues da Silva Florencio-Silva,Rinaldo Baracat,Edmund Chada Girão,Manoel Batista Castello Soares Júnior,José Maria Simões,Manuel de Jesus |
dc.subject.por.fl_str_mv |
Cervix uteri Isoflavones Estrogens Ovariectomy Rats |
topic |
Cervix uteri Isoflavones Estrogens Ovariectomy Rats |
description |
SUMMARY INTRODUCTION Although estrogen therapy is widely used against post-menopausal symptoms, it can present adverse effects, including endometrial cancer. Soy isoflavones are considered a possible alternative to estrogen therapy. However, there are still concerns whether isoflavones exert trophic effects on the uterine cervix. OBJECTIVES To evaluate the histomorphometric and immunohistochemical alterations in the uterine cervix of ovariectomized rats treated with soy isoflavones (Iso). METHODS Fifteen adult Wistar rats were ovariectomized (Ovx) and divided into three groups: Group I (Ovx), administered with vehicle solution; Group II (OVX-Iso), administered with concentrated extract of Iso (150 mg/kg) by gavage; and Group III (OVX-E2), treated with 17β-estradiol (10 µg/kg), subcutaneously. After 30 days of treatments, the uterine cervix was fixed in 10% formaldehyde and processed for paraffin-embedding. Sections were stained with Hematoxylin and eosin for morphological and morphometric studies or subjected to immunohistochemistry for detections of Ki-67 and vascular endothelial growth factor-A (Vegf-A). The data obtained were subjected to statistical analysis (p ≤ 0.05). RESULTS We noted an atrophic uterine cervix in GI, whereas it was more voluminous in GII and even more voluminous in GIII. The thickness of the cervical mucosa was significantly higher in GIII, as compared to GI and GII. The cell proliferation (Ki-67) was significantly elevated in the estradiol and isoflavones treated groups, whereas Vegf-A immunoexpression was significantly higher in GIII, as compared to groups GII and GI. CONCLUSIONS Soy isoflavones cause less trophic and proliferative effects in the uterine cervix of rats as compared to estrogen. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-02-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-42302020000200174 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-42302020000200174 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1806-9282.66.2.174 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Associação Médica Brasileira |
publisher.none.fl_str_mv |
Associação Médica Brasileira |
dc.source.none.fl_str_mv |
Revista da Associação Médica Brasileira v.66 n.2 2020 reponame:Revista da Associação Médica Brasileira (Online) instname:Associação Médica Brasileira (AMB) instacron:AMB |
instname_str |
Associação Médica Brasileira (AMB) |
instacron_str |
AMB |
institution |
AMB |
reponame_str |
Revista da Associação Médica Brasileira (Online) |
collection |
Revista da Associação Médica Brasileira (Online) |
repository.name.fl_str_mv |
Revista da Associação Médica Brasileira (Online) - Associação Médica Brasileira (AMB) |
repository.mail.fl_str_mv |
||ramb@amb.org.br |
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1754212834745516032 |