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1.
Femina ; 51(6): 380-384, 20230630. ilus, tab
Artigo em Português | LILACS | ID: biblio-1512430

RESUMO

Transgênero (trans) é um termo que alberga toda a diversidade de gênero. A incongruência de gênero faz parte desse espectro e refere-se à pessoa cuja identidade de gênero é oposta ao sexo que lhe foi atribuído no nascimento. A terapia hormonal de afirmação de gênero, bem como a cirurgia de afirmação de gênero, é necessária para adequar o corpo ao gênero ao qual a pessoa se identifica. Os homens trans necessitam da terapia com testosterona, que visa reduzir as concentrações de estradiol e incrementar a testosterona circulante para níveis fisiológicos masculinos, resultando em masculinização. A mulher trans receberá o estradiol, associado ou não a um antiandrogênico, visando reduzir a testosterona e incrementar o estrogênio para níveis femininos, resultando em feminização. A cirurgia de afirmação de gênero é, frequentemente, requerida para completar as modificações fenotípicas para o homem e a mulher trans. O ginecologista e obstetra tem um papel crucial no provimento de cuidados a essa população. O presente artigo visa sistematizar algumas ações que o ginecologista e obstetra pode oferecer e que têm potencial para melhorar a qualidade de vida dos homens e mulheres trans. (AU)


Transgenero (trans) is an umbrella term that encompasses all gender diversity. Gender Incongruity is part of this spectrum and refers to the person whose gender identity is opposed to the sex assigned to them at birth. Gender-affirming hormone therapy as well as gender-affirming surgery are necessary to adapt the body to the gender to which the person identifies. Trans men require testosterone therapy to reduce estradiol concentrations and increase circulating testosterone to male physiological levels resulting in masculinization. Trans women will receive estradiol associated or not with an antiandrogenic to reduce testosterone and increase estrogen to female levels resulting in feminization. gender-affirming surgery is often required to complete phenotypic modifications for trans men and women. The gynecologist and obstetrician plays a crucial role in to provide care to this population. This article aims to systematize some actions that the gynecologist and obstetrician can offer to improve the quality of life of trans men and women. (AU)


Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Atenção à Saúde/ética , Ginecologia , Neoplasias da Próstata/prevenção & controle , Testosterona/administração & dosagem , Neoplasias da Mama/prevenção & controle , Anticoncepção , Técnicas de Reprodução Assistida , Estradiol/administração & dosagem , Estrogênios/administração & dosagem , Tromboembolia Venosa/prevenção & controle , Ginecologista , Obstetra
2.
BMJ ; 376: o485, 2022 03 08.
Artigo em Inglês | MEDLINE | ID: mdl-35260385

RESUMO

The studyVinogradova Y, Coupland C, Hippisley-Cox J. Use of hormone replacement therapy and risk of breast cancer: nested case-control studies using the QResearch and CPRD databases. BMJ 2020;371:m3873. To read the full NIHR Alert, go to: https://evidence.nihr.ac.uk/alert/risk-of-breast-cancer-with-hrt-depends-therapy-type-and-duration/.


Assuntos
Neoplasias da Mama/induzido quimicamente , Terapia de Reposição de Estrogênios/efeitos adversos , Terapia de Reposição de Estrogênios/métodos , Estrogênios/efeitos adversos , Progestinas/efeitos adversos , Fatores Etários , Idoso , Estudos de Casos e Controles , Didrogesterona/administração & dosagem , Didrogesterona/efeitos adversos , Estrogênios/administração & dosagem , Feminino , Humanos , Pessoa de Meia-Idade , Noretindrona/administração & dosagem , Noretindrona/efeitos adversos , Progestinas/administração & dosagem , Fatores de Risco , Fatores de Tempo
3.
Gene ; 823: 146365, 2022 May 20.
Artigo em Inglês | MEDLINE | ID: mdl-35257789

RESUMO

BACKGROUND: Silibinin is a polyphenolic compound that could modulate estrogen receptor activation. Vascular dysfunction is considered a key initiator in atherosclerosis and may occur in the postmenopausal period. This manuscript compares estrogen and silibinin's impacts on factors that change endothelial function in ovariectomized (OVX) rats. METHODS: 32 female Wistar rats were subdivided into control; OVX; OVX + estrogen (1 mg/kg/day); and OVX + silibinin (50 mg/kg/day) groups. After the experimental period, lipid profile, atherogenic indices, and histopathology of endothelium were monitored. The vascular oxidative stress, adhesion molecules, inflammatory cytokine levels, nitric oxide (NO), angiotensin-II (Ang-II), and endothelin-1 (ET-1) were also analyzed. RESULTS: Silibinin treatment, similar to estrogen, significantly normalized the adverse changes of OVX on vascular function, including improved lipid profile and oxidative stress, increased endothelial nitric oxide synthase (eNOS) expression, diminished inflammatory status, and reduced adhesion molecule levels, ET-1 and Ang-II substances. Our findings also revealed that the administration with estrogen or silibinin resulted in a normal endothelium layer in the aorta tissues of OVX rats. CONCLUSION: Estrogen and silibinin have similar effects in improving vascular function. These treatments' protective impacts on vasculature indicate their potential benefits on the cardiovascular system in the postmenopausal period.


Assuntos
Endotélio Vascular/efeitos dos fármacos , Estrogênios/administração & dosagem , Metabolismo dos Lipídeos/efeitos dos fármacos , Óxido Nítrico/metabolismo , Ovariectomia/efeitos adversos , Silibina/administração & dosagem , Animais , Modelos Animais de Doenças , Endotélio Vascular/metabolismo , Estrogênios/farmacologia , Feminino , Humanos , Óxido Nítrico Sintase Tipo III/metabolismo , Estresse Oxidativo/efeitos dos fármacos , Pós-Menopausa , Ratos , Ratos Wistar , Silibina/farmacologia
4.
Int J Mol Sci ; 23(3)2022 Jan 22.
Artigo em Inglês | MEDLINE | ID: mdl-35163159

RESUMO

BACKGROUND: Gestagens are the most widely used therapy in anestrus type II. The aim of this research is to evaluate the effectiveness of the vaginal progesterone inserts therapy in anestrus type II in cows. METHODS: The study was conducted on 33 cows. Progesterone (PR) and estrogen (ER) receptors expression in endometrium was assessed on a molecular level based on mRNA tissue expression. Additionally, blood 17ß-estradiol and progesterone levels were evaluated. RESULTS: A decrease in mRNA expression of A and B PR and ER α was noted in treated and untreated animals. In the treated group, an increase of ERß mRNA expression was observed, while a decreased was found in untreated animals. There was increased PR, ERα and ß expression in endometrial tissue in treated cows, and decreased expression of these factors in untreated cows. In the treated group, recurrence of ovarian cyclicity was noted in 52% of animals and pregnancy was obtained in 34.8% of them, while in the untreated group, recurrence did not occur. In the control group, spontaneous recurrence of ovarian cyclicity was not observed. An increase of PR expression was correlated with increased proliferation of endometrial cells. CONCLUSIONS: It seems likely that the endometrium is well developed and ready for placentation after removing the exogenous source of progesterone and preventing the recurrence of cyclicity of ovaries.


Assuntos
Anestro , Endométrio/citologia , Estradiol/administração & dosagem , Regulação da Expressão Gênica/efeitos dos fármacos , Progesterona/administração & dosagem , Receptores de Estrogênio/metabolismo , Receptores de Progesterona/metabolismo , Administração Intravaginal , Animais , Bovinos , Endométrio/efeitos dos fármacos , Endométrio/metabolismo , Estradiol/sangue , Estrogênios/administração & dosagem , Estrogênios/sangue , Feminino , Progesterona/sangue , Progestinas/administração & dosagem , Progestinas/sangue
5.
Med Sci Sports Exerc ; 54(3): 408-416, 2022 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-34711708

RESUMO

INTRODUCTION: Postmenopausal women (PMW) display exaggerated increases in blood pressure (BP) during exercise, yet the mechanism(s) involved remain unclear. Moreover, research on the impact of menopausal changes in estradiol on cardiovascular control during exercise are limited. Herein, we tested the hypothesis that sympathetic responses during exercise are augmented in PMWcompared with young women (YW), and estradiol administration attenuates these responses. METHODS: Muscle sympathetic nerve activity (MSNA) and mean arterial pressure (MAP) were measured in 13 PMW (58 ± 1 yr) and 17 YW (22 ± 1 yr) during 2 min of isometric handgrip. Separately, MSNA and BP responses were measured during isometric handgrip in six PMW (53 ± 1 yr) before and after 1 month of transdermal estradiol (100 µg·d-1). A period of postexercise ischemia (PEI) to isolate muscle metaboreflex activation followed all handgrip bouts. RESULTS: Resting MAP was similar between PMW and YW, whereas MSNA was greater in PMW (23 ± 3 vs 8 ± 1 bursts per minute; P < 0.05). During handgrip, the increases in MSNA (PMW Δ16 ± 2 vs YW Δ6 ± 1 bursts per minute; P < 0.05) and MAP (PMW Δ18 ± 2 vs YW Δ12 ± 2 mm Hg; P < 0.05) were greater in PMW and remained augmented during PEI. Estradiol administration decreased resting MAP but not MSNA in PMW. Moreover, MSNA (PMW (-E2) Δ27 ± 8 bursts per minute versus PMW (+E2) Δ12 ± 5 bursts per minute; P < 0.05) and MAP (Δ31 ± 8 mm Hg vs Δ20 ± 6 mm Hg; P < 0.05) responses during handgrip were attenuated in PMW after estradiol administration. Likewise, MAP responses during PEI were lower after estradiol. CONCLUSIONS: These data suggest that PMW exhibit an exaggerated MSNA and BP response to isometric exercise, due in part to heightened metaboreflex activation. Furthermore, estradiol administration attenuated BP and MSNA responses to exercise in PMW.


Assuntos
Barorreflexo/fisiologia , Pressão Sanguínea/fisiologia , Estradiol/administração & dosagem , Exercício Físico/fisiologia , Pós-Menopausa/fisiologia , Sistema Nervoso Simpático/fisiologia , Fatores Etários , Barorreflexo/efeitos dos fármacos , Pressão Sanguínea/efeitos dos fármacos , Estrogênios/administração & dosagem , Feminino , Humanos , Pessoa de Meia-Idade , Pós-Menopausa/efeitos dos fármacos , Sistema Nervoso Simpático/efeitos dos fármacos , Adulto Jovem
6.
Brain Res Bull ; 178: 108-119, 2022 01.
Artigo em Inglês | MEDLINE | ID: mdl-34838851

RESUMO

INTRODUCTION: The aim of this study was to determine the anti-inflammatory effect of female sex hormones on the level of intracellular molecules of cytokine signaling pathway after diffuse traumatic brain injury (TBI) in ovariectomized rats. METHODS: Female rats were divided into 10 groups: control, sham, TBI, Vehicle (oil), Vehicle E1 (33.3 µg/kg), E2 (1 mg / kg), P1 (1.7 mg/kg), P2 (8 mg / kg), E2 + P1. All drugs were injected 0.5 h after TBI. Brain edema and the brain levels of P-STAT-3, NFκB-P52, NFκB-P65, P-IκB, and SOCS-3 by immunohistochemistry measured at 24 h after TBI. RESULTS: Increased brain edema after TBI was inhibited by different doses of estrogen, progesterone (P < 0.001), and E2 + P1 (P < 0.05). The brain levels of P-STAT-3, NFκB-P52, NFκB-P65, and p-IκBα that increased after TBI was decreased only by E2 (P < 0.05). E2 and E2 + P1 have increased the SOCS-3 level after TBI (P < 0.05). Also, there was a difference between the E2 with E1 and two progesterone doses (P < 0.05). So that in all cases, the effects of E2 were more significant than the other groups. The target cells for these effects of E2 were microglia and astrocytes. CONCLUSION: The results indicate that one of the probable mechanism(s) of estrogen anti-inflammatory effect after TBI is either reduction of p-STAT-3, NFκB-P52, p-NFκB-P65, and p-IκBα or increase in SOCS-3 molecules involved in the signaling pathway of inflammatory cytokines.


Assuntos
Edema Encefálico/tratamento farmacológico , Lesões Encefálicas Traumáticas/tratamento farmacológico , Estrogênios/farmacologia , Doenças Neuroinflamatórias/tratamento farmacológico , Progesterona/farmacologia , Animais , Modelos Animais de Doenças , Estrogênios/administração & dosagem , Feminino , Progesterona/administração & dosagem , Ratos
7.
Alzheimers Dement ; 18(4): 625-634, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-34322991

RESUMO

INTRODUCTION: Use of systemic hormone therapy has been positively associated with development of dementia. Little is known about the dose-dependent effect of vaginal estradiol on dementia risk. METHODS: We assessed associations between cumulative dose of vaginal estradiol tablets and dementia in a case-control study nested in a nationwide Danish cohort of women aged 50 to 60 years at study initiation, who did not use systemic hormone therapy. Each case was age-matched to 10 female controls. RESULTS: A total of 4574 dementia cases were matched to 45,740 controls. Cumulative use of vaginal estradiol tablets was not associated with all-cause dementia; adjusted hazard ratio 1.02 (95% confidence interval [CI] 0.89-1.18) for low dose (< 750 mcg), 1.07 (0.94-1.21) for medium dose (750-2000 mcg), and 0.93 (0.84-1.03) for high dose (> 2000 mcg). Similarly, Alzheimer's disease (AD) only was not associated with vaginal estradiol. DISCUSSION: Exposure to vaginal estradiol tablets was not associated with all-cause dementia or AD only.


Assuntos
Doença de Alzheimer , Estradiol , Estrogênios , Administração Intravaginal , Doença de Alzheimer/tratamento farmacológico , Doença de Alzheimer/epidemiologia , Estudos de Casos e Controles , Estudos de Coortes , Estradiol/administração & dosagem , Estradiol/efeitos adversos , Estrogênios/administração & dosagem , Estrogênios/efeitos adversos , Feminino , Humanos , Pessoa de Meia-Idade
8.
J Clin Endocrinol Metab ; 107(2): e582-e593, 2022 01 18.
Artigo em Inglês | MEDLINE | ID: mdl-34534317

RESUMO

CONTEXT: Systematic investigations into the cognitive impact of estradiol and insulin in male individuals are sparse, and it is unclear whether the 2 hormones interact to benefit specific cognitive functions in humans. OBJECTIVE: We investigated the acute effect of estradiol and insulin and of their combined administration on divergent (creative) and convergent (arithmetical) thinking as well as short-term and working verbal memory in healthy young men. METHODS: According to a 2 × 2 design, 2 groups of men (each n = 16) received a 3-day transdermal estradiol (100 µg/24 h) or placebo pretreatment and on 2 separate mornings were intranasally administered 160 IU regular human insulin and, respectively, placebo before completing a battery of cognitive tests; we also determined relevant blood parameters. RESULTS: Estrogen compared with placebo treatment induced a 3.5-fold increase in serum estradiol and suppressed serum testosterone concentrations by 70%. Estrogen in comparison to placebo improved creative performance, that is, verbal fluency and flexibility, but not arithmetical thinking, as well as verbal short-term memory, but not visuospatial memory. The combination of estrogen and insulin enhanced recognition discriminability at delayed verbal memory recall; insulin alone remained without effect. CONCLUSION: Estrogen specifically enhances core aspects of creativity and verbal memory in young male individuals; delayed recognition memory benefits from the combined administration of estradiol and insulin. Our results indicate that insulin's acute cognitive impact in young men is limited and not robustly potentiated by estradiol. Estradiol per se exerts a beneficial acute effect on creative and verbal performance in healthy young men.


Assuntos
Cognição/efeitos dos fármacos , Estrogênios/administração & dosagem , Insulina/administração & dosagem , Administração Intranasal , Adolescente , Adulto , Criatividade , Voluntários Saudáveis , Humanos , Masculino , Memória/efeitos dos fármacos , Testes Neuropsicológicos , Adesivo Transdérmico , Adulto Jovem
9.
Front Endocrinol (Lausanne) ; 12: 708931, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34744997

RESUMO

Objective: This study aimed to determine the most appropriate age for height control treatment in patients with Marfan syndrome (MFS). Materials and Methods: This retrospective study included patients with MFS who underwent height control treatment with estradiol valerate. The estrogen dose was increased according to the height change. The cut-off age for the maximum difference between the expected height and actual final height was evaluated. Results: Seventeen patients were included in this study. The difference between the height predicted by the growth curve and the final height (gcHtD) and that predicted by the bone age and the final height (baHtD) was the largest in the 10.5 years age group (p=0.0045 and p=0.0237, respectively). The gcHtD was 10.6 (10.2, 13.5) cm for patients aged ≤10.5 years, whereas it was 0.6 (-3.65, 5.85) cm for patients aged >10.5 years. The baHtD was 10.1 (7.31, 11.42) cm for patients aged ≤10.5 years, while it was 3.83 (0.84, 6.4) cm for patients aged >10.5 years. When height change was observed for a minimum of 6 months after completion of estrogen treatment, the average growth was 0.6 (0.2, 2.1) cm. Conclusion: Initiating height control treatment before the age of 10.5 years is effective in female patients with MFS.


Assuntos
Estatura/efeitos dos fármacos , Estradiol/administração & dosagem , Estrogênios/administração & dosagem , Síndrome de Marfan/tratamento farmacológico , Fatores Etários , Criança , Feminino , Seguimentos , Humanos , Síndrome de Marfan/patologia , Prognóstico , Estudos Retrospectivos
10.
Biomed Res Int ; 2021: 7702863, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34734086

RESUMO

People who receive the ChAdOx1 nCoV-19 vaccine, particularly perimenopausal women who are on birth control or postmenopausal women who take estrogen supplements, may experience thrombosis and thrombocytopenia. Estrogen and the ChAdOx1 nCoV-19 vaccine both have the potential to cause thrombus in different ways. Some postmenopausal women who are also taking estrogens may develop thrombosis and thrombocytopenia after receiving the ChAdOx1 nCoV-19 vaccine. Therefore, women are encouraged to stop taking drugs containing estrogen before receiving this vaccine. Furthermore, consuming fish oil can help reduce the risk of developing blood clots among women who are in the luteal phase and, thus, have high estrogen levels. In addition, ChAdOx1 nCoV-19's side effects in young women could be mitigated by administering it during the follicular phase.


Assuntos
Vacinas contra COVID-19/efeitos adversos , COVID-19 , Estrogênios/administração & dosagem , Trombose/etiologia , Vacinação/efeitos adversos , ChAdOx1 nCoV-19 , Feminino , Humanos , Menopausa , SARS-CoV-2 , Trombocitopenia/etiologia
11.
Maturitas ; 154: 13-19, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34736575

RESUMO

OBJECTIVES: To compare the effect of oral estradiol (E2) plus vaginal progesterone (P4) against placebo on endometrial thickness, endometrial biopsy pathology, cervical cytology and total cancer incidence among healthy postmenopausal women. STUDY DESIGN: This study is a sub-analysis of the Early versus Late Intervention Trial with Estradiol (ELITE), a randomized, double-blinded, placebo-controlled trial that previously demonstrated that hormone therapy (HT) was associated with less progression of subclinical atherosclerosis than placebo when therapy was initiated within 6 years after menopause but not when it was initiated 10 or more years after menopause. This sub-analysis included only ELITE participants with an intact uterus, who were randomized to either daily oral micronized 17-beta-E2 1 mg/day with 4% vaginal micronized P4 gel 45 mg/day for 10 days each month or placebo. MAIN OUTCOME MEASURES: Participants were evaluated at baseline and annually during a median follow-up of 4.8 years for endometrial thickness as determined by pelvic transvaginal ultrasound followed by an endometrial biopsy when indicated, and cervical cytology and cancer incidence. RESULTS: Over up to 80 months of follow-up, participants randomized to oral E2 plus vaginal P4 had progressive and statistically significant increases in endometrial thickness (p<0.001), underwent more endometrial biopsies and had a higher rate of endometrial hyperplasia on endometrial biopsy compared with the placebo group. Due to the close follow-up of participants in the trial protocol, these abnormal findings were effectively treated. CONCLUSION: Our results suggest that 10 days of vaginal P4 45 mg/day is insufficient to completely oppose the effect of oral E2 1 mg/day on the endometrium. Further studies are needed to test alternative doses or frequencies of administration of vaginal P4 for adequate endometrial protection from E2 therapy among postmenopausal women. ClinicalTrials.gov registration NCT00114517.


Assuntos
Endométrio/efeitos dos fármacos , Estradiol/administração & dosagem , Estrogênios/administração & dosagem , Pós-Menopausa/efeitos dos fármacos , Progesterona/administração & dosagem , Idoso , Método Duplo-Cego , Hiperplasia Endometrial/induzido quimicamente , Hiperplasia Endometrial/epidemiologia , Endométrio/metabolismo , Estradiol/uso terapêutico , Estrogênios/uso terapêutico , Feminino , Humanos , Incidência , Pessoa de Meia-Idade , Progesterona/uso terapêutico , Resultado do Tratamento
12.
Obstet Gynecol ; 138(6): 950-960, 2021 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-34794166

RESUMO

SUMMARY: With an estimated 3.8 million breast cancer survivors in the United States, obstetrician-gynecologists often are on the front lines of addressing survivorship issues, including the hypoestrogenic-related adverse effects of cancer therapies or early menopause in survivors (1). Although systemic and vaginal estrogen are used widely for symptomatic relief of genitourinary syndrome of menopause in the general population, among individuals with a history of hormone-sensitive cancer, there is uncertainty about the safety of hormone-based therapy, leading many individuals with bothersome symptoms to remain untreated, with potential negative consequences on quality of life (2). An effective management strategy requires familiarity with a range of both hormonal and nonhormonal treatment options, knowledge about the pharmaceutical mechanisms of action, and the ability to tailor treatment based on individual risk factors. This clinical consensus document was developed using an a priori protocol in conjunction with two authors specializing in urogynecology and gynecologic oncology. This document has been updated to review the safety and efficacy of newer hormonal treatment options as well as nonhormonal modalities.


Assuntos
Estrogênios/administração & dosagem , Doenças Urogenitais Femininas/tratamento farmacológico , Ginecologia/normas , Terapia de Reposição Hormonal/normas , Urologia/normas , Neoplasias da Mama/complicações , Neoplasias da Mama/metabolismo , Sobreviventes de Câncer , Consenso , Estrogênios/metabolismo , Feminino , Doenças Urogenitais Femininas/etiologia , Doenças Urogenitais Femininas/metabolismo , Humanos , Menopausa Precoce/metabolismo
13.
Sci Rep ; 11(1): 20193, 2021 10 12.
Artigo em Inglês | MEDLINE | ID: mdl-34642384

RESUMO

This study aimed to explore the effect of pelvic reconstruction surgery on the relation of pelvic organ prolapse (POP) and overactive bladder (OAB) and the impact of preoperative vaginal oestrogen supplement on vaginal tissue. A total of 100 postmenopausal women with symptomatic POP who underwent pelvic reconstruction surgery (laparoscopic sacrocolpopexy or transvaginal mesh) were enrolled in this study. Preoperative vaginal oestrogen was prescribed in 28 cases. The evaluation tools consisted of POP-Q, urodynamic study, Overactive Bladder Symptom Score (OABSS), and urinary NGF. Vaginal maturation index and vaginal specimens for hormone receptors study were investigated during operation to evaluate the effect of topical oestrogen. Follow-up assessments were performed at 1, 3, and 6 months after surgery. Preoperatively, 58 (58%) were POP with OAB. After reconstruction surgery, the OABSS decreased significantly (6.87 ± 0.85 vs 3.77 ± 0.61, p < 0.001) at postoperative 6 months in the group. Remarkable increasing trends of urinary NGF levels are noted till 3 months postoperatively, then decreasing to the baseline level at 6 months postoperative follow-up. Remarkable decrease of mRNA of the androgen receptor and significant higher expression of progesterone receptor (PR) were noted after use of the vaginal oestrogen cream. The severity of OAB in the POP women shows moderate degree according to OABSS. Pelvic reconstruction surgery can significantly improve the OAB symptoms. The surgery induced inflammation effect lasts for about 6 months. Short-term preoperative supplement of topical oestrogen brings alterations of the vaginal epithelium.


Assuntos
Estrogênios/administração & dosagem , Fator de Crescimento Neural/urina , Prolapso de Órgão Pélvico/cirurgia , Bexiga Urinária Hiperativa/cirurgia , Idoso , Estrogênios/farmacologia , Feminino , Humanos , Pessoa de Meia-Idade , Prolapso de Órgão Pélvico/genética , Prolapso de Órgão Pélvico/urina , Pós-Menopausa , Estudos Prospectivos , Receptores Androgênicos/genética , Receptores de Estrogênio/genética , Receptores de Progesterona/genética , Procedimentos de Cirurgia Plástica/instrumentação , Telas Cirúrgicas , Resultado do Tratamento , Bexiga Urinária Hiperativa/genética , Bexiga Urinária Hiperativa/urina , Urodinâmica , Cremes, Espumas e Géis Vaginais
14.
Breast Cancer Res ; 23(1): 100, 2021 10 30.
Artigo em Inglês | MEDLINE | ID: mdl-34717714

RESUMO

BACKGROUND: Metastatic breast cancer (MBC) is incurable, with a 5-year survival rate of 28%. In the USA, more than 42,000 patients die from MBC every year. The most common type of breast cancer is estrogen receptor-positive (ER+), and more patients die from ER+ breast cancer than from any other subtype. ER+ tumors can be successfully treated with hormone therapy, but many tumors acquire endocrine resistance, at which point treatment options are limited. There is an urgent need for model systems that better represent human ER+ MBC in vivo, where tumors can metastasize. Patient-derived xenografts (PDX) made from MBC spontaneously metastasize, but the immunodeficient host is a caveat, given the known role of the immune system in tumor progression and response to therapy. Thus, we attempted to develop an immune-humanized PDX model of ER+ MBC. METHODS: NSG-SGM3 mice were immune-humanized with CD34+ hematopoietic stem cells, followed by engraftment of human ER+ endocrine resistant MBC tumor fragments. Strategies for exogenous estrogen supplementation were compared, and immune-humanization in blood, bone marrow, spleen, and tumors was assessed by flow cytometry and tissue immunostaining. Characterization of the new model includes assessment of the human tumor microenvironment performed by immunostaining. RESULTS: We describe the development of an immune-humanized PDX model of estrogen-independent endocrine resistant ER+ MBC. Importantly, our model harbors a naturally occurring ESR1 mutation, and immune-humanization recapitulates the lymphocyte-excluded and myeloid-rich tumor microenvironment of human ER+ breast tumors. CONCLUSION: This model sets the stage for development of other clinically relevant models of human breast cancer and should allow future studies on mechanisms of endocrine resistance and tumor-immune interactions in an immune-humanized in vivo setting.


Assuntos
Neoplasias da Mama/imunologia , Neoplasias da Mama/patologia , Resistencia a Medicamentos Antineoplásicos , Receptores de Estrogênio/metabolismo , Ensaios Antitumorais Modelo de Xenoenxerto/métodos , Animais , Antígenos CD34/metabolismo , Neoplasias da Mama/genética , Neoplasias da Mama/metabolismo , Modelos Animais de Doenças , Resistencia a Medicamentos Antineoplásicos/genética , Receptor alfa de Estrogênio/genética , Estrogênios/administração & dosagem , Estrogênios/farmacologia , Feminino , Transplante de Células-Tronco Hematopoéticas , Células-Tronco Hematopoéticas/metabolismo , Xenoenxertos/efeitos dos fármacos , Xenoenxertos/metabolismo , Xenoenxertos/patologia , Humanos , Camundongos , Camundongos Endogâmicos NOD , Camundongos SCID , Camundongos Transgênicos , Mutação , Receptores de Estrogênio/genética , Microambiente Tumoral/imunologia
15.
Toxicol Lett ; 352: 1-8, 2021 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-34536523

RESUMO

Dipyrone is a commonly used analgesic in many countries and there is limited data on its possible endocrine disrupting effects. We performed a screening for in vivo and in vitro anti(estrogenic) activity of dipyrone. For the in vivo uterotrophic assay, immature female rats (22-days-old) were treated daily by oral gavage for three days with different doses of dipyrone alone (50, 100, 200 mg/kg/day) and associated with three ethynylestradiol (EE) doses (1, 3 and 10 µg/kg/day), which were based on a dose-response curve experiment. The uterine weight was used as a biomarker for estrogenicity. In a parallel in vitro approach, we used a yeast-based transcriptional activation reporter gene assay (Yeast Estrogen Screening - YES) for assessment of estrogenic agonistic and antagonistic effects of dipyrone and its main metabolites 4-methylaminoantipyrine (MAA) and 4-aminoantipyrine (AA). In the uterotrophic assay, animals that received EE at 1, 3 and 10 µg/kg/day showed an increase in relative uterine weight compared with vehicle-only rats (canola oil). Dipyrone did not increase uterine weight at any dose tested (50, 100 and 200 mg/kg/day) in relation to vehicle control, indicating absence of estrogenic activity. Furthermore, co-administration of dipyrone (50 and 200 mg/kg/day) and EE (1, 3 or 10 µg/kg/day) was unable to block EE estrogenic action in comparison to the groups treated with EE alone, indicating absence of antiestrogenic activity. In the YES assay dipyrone and its metabolites did not demonstrate estrogen agonistic or antagonistic properties in the yeast cells. These results suggest that dipyrone and its metabolites do not produce (anti)estrogenic effects in vivo or in vitro.


Assuntos
Anti-Inflamatórios não Esteroides/toxicidade , Dipirona/toxicidade , Estrogênios/toxicidade , Útero/efeitos dos fármacos , Animais , Anti-Inflamatórios não Esteroides/administração & dosagem , Dipirona/administração & dosagem , Relação Dose-Resposta a Droga , Estrogênios/administração & dosagem , Feminino , Ratos , Ratos Wistar , Saccharomyces cerevisiae
16.
BMC Cancer ; 21(1): 1017, 2021 Sep 11.
Artigo em Inglês | MEDLINE | ID: mdl-34511060

RESUMO

BACKGROUND: Neutrophils are important for immune surveillance of tumour cells. Neutrophils may also be epigenetically programmed in the tumour microenvironment to promote tumour progression. In addition to the commonly known high-density neutrophils (HDN) based on their separation on density gradient, recent studies have reported the presence of high levels of low-density neutrophils (LDN) in tumour-bearing mice and cancer patients. We reported previously that estrogen promotes the growth of estrogen receptor α-negative mammary tumours in mice undergoing mammary involution through stimulating pro-tumoral activities of neutrophils in the mammary tissue. METHODS: Female BALB/cAnNTac mice at 7-8 weeks old were mated and bilateral ovariectomy was performed 2 days post-partum. At 24 h after forced-weaning of pups to induce mammary involution, post-partum female mice were injected with either E2V, or vehicle control on alternative days for 2-weeks. On 48 h post-weaning, treated female mice were inoculated subcutaneously with 4 T1-Luc2 cells into the 9th abdominal mammary gland. Age-matched nulliparous female was treated similarly. Animals were euthanized on day 14 post-tumour inoculation for analysis. To evaluate the short-term effect of estrogen, post-partum females were treated with only one dose of E2V on day 12 post-tumour inoculation. RESULTS: Estrogen treatment for 2-weeks reduces the number of blood LDN by more than 10-fold in tumour-bearing nulliparous and involuting mice, whilst it had no significant effect on blood HDN. The effect on tumour-bearing mice is associated with reduced number of mitotic neutrophils in the bone marrow and increased apoptosis in blood neutrophils. Since estrogen enhanced tumour growth in involuting mice, but not in nulliparous mice, we assessed the effect of estrogen on the gene expression associated with pro-tumoral activities of neutrophils. Whilst 48 h treatment with estrogen had no effect, 2-weeks treatment significantly increased the expression of Arg1, Il1b and Tgfb1 in both HDN and LDN of involuting mice. In contrast, estrogen increased the expression of Arg1 and Ccl5 in HDN and LDN of nulliparous mice. CONCLUSIONS: Prolonged estrogenic stimulation in tumour-bearing mice markedly hampered tumour-associated increase of LDN plausibly by inhibiting their output from the bone marrow and by shortening their life span. Estrogen also alters the gene expression in neutrophils that is not seen in tumour-free mice. The results imply that estrogen may significantly influence the tumour-modulating activity of blood neutrophils.


Assuntos
Estrogênios/farmacologia , Neoplasias Mamárias Animais/sangue , Neutrófilos/efeitos dos fármacos , Animais , Apoptose/efeitos dos fármacos , Arginase/genética , Arginase/metabolismo , Biomarcadores Tumorais/metabolismo , Células da Medula Óssea/citologia , Centrifugação com Gradiente de Concentração , Estrogênios/administração & dosagem , Feminino , Citometria de Fluxo , Expressão Gênica/efeitos dos fármacos , Interleucina-1beta/genética , Interleucina-1beta/metabolismo , Glândulas Mamárias Animais , Camundongos , Camundongos Endogâmicos BALB C , Transplante de Neoplasias , Neutrófilos/citologia , Neutrófilos/metabolismo , Ovariectomia/métodos , Paridade , Período Pós-Parto , Fatores de Tempo , Fator de Crescimento Transformador beta1/genética , Fator de Crescimento Transformador beta1/metabolismo
18.
BJOG ; 128(13): 2200-2208, 2021 12.
Artigo em Inglês | MEDLINE | ID: mdl-34464489

RESUMO

OBJECTIVE: To evaluate whether locally applied vaginal estrogen affects prolapse-associated complaints compared with placebo treatment in postmenopausal women prior to surgical prolapse repair. DESIGN: Randomised, double-masked, placebo-controlled, multicentre study. SETTING: Urogynaecology unit at the Medical University of Vienna and University Hospital of Tulln. POPULATION: Postmenopausal women with symptomatic pelvic organ prolapse and planned surgical prolapse repair. METHODS: Women were randomly assigned local estrogen cream or placebo cream 6 weeks preoperatively. MAIN OUTCOME MEASURES: The primary outcome was differences in subjective prolapse-associated complaints after 6 weeks of treatment prior to surgery, assessed with the comprehensive German pelvic floor questionnaire. Secondary outcomes included differences in other pelvic floor-associated complaints (bladder, bowel or sexual function). RESULTS: Out of 120 women randomised, 103 (86%) remained for the final analysis. After 6 weeks of treatment the prolapse domain score did not differ between the estrogen and the placebo groups (4.4 ± 0.19 versus 4.6 ± 0.19; mean difference, -0.21; 95% CI -0.74 to 0.33; P = 0.445). Multivariate analysis, including only women receiving the intervention, showed that none of the confounding factors modified the response to estradiol. CONCLUSIONS: These results demonstrate that preoperative locally applied estrogen does not ameliorate prolapse-associated symptoms in postmenopausal women with symptomatic pelvic organ prolapse. TWEETABLE ABSTRACT: Preoperative local estrogen does not ameliorate prolapse-associated symptoms in postmenopausal women with pelvic organ prolapse.


Assuntos
Estrogênios Conjugados (USP)/administração & dosagem , Estrogênios/administração & dosagem , Prolapso de Órgão Pélvico/tratamento farmacológico , Prolapso de Órgão Pélvico/cirurgia , Pós-Menopausa , Administração Intravaginal , Idoso , Método Duplo-Cego , Estradiol/sangue , Feminino , Humanos , Cuidados Intraoperatórios/métodos , Pessoa de Meia-Idade , Diafragma da Pelve/fisiopatologia , Prolapso de Órgão Pélvico/patologia , Estudos Prospectivos , Resultado do Tratamento
19.
Female Pelvic Med Reconstr Surg ; 27(8): 521-526, 2021 08 01.
Artigo em Inglês | MEDLINE | ID: mdl-34261104

RESUMO

OBJECTIVE: The aims of this study were to evaluate the biomolecular properties of vaginal and perineal granulation tissue in postpartum women and assess the potential impact of vaginal estrogen application. METHODS: We prospectively identified women referred to a subspecialty peripartum clinic between September 2016 and April 2018 who developed symptomatic perineal or vaginal granulation tissue. As part of routine clinical care, granulation tissue was excised from each participant by a urogynecologist and subjected to RNA extraction, real-time quantitative polymerase chain reaction, histologic evaluation, and immunohistochemistry. Serum steroid hormone levels were measured. Comparisons were made between participants who used topical vaginal estradiol (E2) and those who did not (non-E2 controls). RESULTS: Sixteen postpartum women were recruited for this pilot study. More than 30% of patients (n = 5, 31%) had used topical vaginal estradiol (E2) during their postpartum recovery. Histological appearance of granulation tissue evaluated by hematoxylin and eosin staining was similar in women treated with vaginal E2 and non-E2 controls. Both estrogen receptor α (ERα) and ERß mRNA and ERα protein were readily detectable in the granulation tissue of E2-treated women. Although not statistically significant, participants who used topical E2 developed granulation tissue that exhibited local estrogen-responsive gene upregulation. Serum levels of estrone, E2, dehydroepiandrosterone, progesterone, and testosterone did not differ between vaginal E2-treated patients and controls. CONCLUSIONS: Estrogen receptor α seems to be the predominant receptor mediating estrogen action in postpartum perineal and vaginal granulation tissue. Vaginal E2 use does not seem to affect serum levels of estrone, E2, dehydroepiandrosterone, progesterone, and testosterone in postpartum women.


Assuntos
Estradiol/farmacologia , Estrogênios/farmacologia , Tecido de Granulação/efeitos dos fármacos , Vagina/patologia , Administração Tópica , Estradiol/administração & dosagem , Receptor alfa de Estrogênio , Estrogênios/administração & dosagem , Feminino , Humanos , Projetos Piloto , Período Pós-Parto
20.
Front Endocrinol (Lausanne) ; 12: 667403, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34326812

RESUMO

Context: The safety and efficacy of feminizing hormone therapy in aging transgender (trans) individuals is unclear. Current recommendations suggest transdermal estradiol beyond the age of 45 years, especially if cardiometabolic risk factors are present. Objective: To evaluate feminizing hormone therapy regimens and cardiovascular risk factors in aging trans individuals. Design: Retrospective cross-sectional analysis. Setting: Primary care and endocrine specialist clinic in Melbourne, Australia. Participants: Trans individuals on feminizing therapy for ≥6 months. Main Outcomes Measures: Feminizing hormone regimens and serum estradiol concentrations by age group: (a) ≥45 years, (b) <45 years, and prevalence of cardiometabolic risk factors in individuals ≥45 years. Results: 296 individuals were stratified by age group: ≥45 years (n=55) and <45 years (n=241). There was no difference in median estradiol concentration between groups (328 nmol/L vs. 300 nmol/L, p=0.22). However, there was a higher proportion of individuals ≥45 years treated with transdermal estradiol (31% vs. 8%, p<0.00001). Of those treated with oral estradiol, the median dose was lower in the ≥45 years group (4mg vs. 6mg, p=0.01). The most prevalent cardiometabolic risk factor in the ≥45 years group was hypertension (29%), followed by current smoking (24%), obesity (20%), dyslipidaemia (16%) and diabetes (9%). Conclusions: A greater proportion of trans individuals ≥45 years of age were treated with transdermal estradiol. Of those who received oral estradiol, the median dose was lower. This is important given the high prevalence of cardiometabolic risk factors in this age group, however cardiovascular risk management guidelines in this demographic are lacking.


Assuntos
Doenças Cardiovasculares/epidemiologia , Estradiol/efeitos adversos , Feminização/patologia , Prescrições/estatística & dados numéricos , Administração Oral , Austrália/epidemiologia , Doenças Cardiovasculares/induzido quimicamente , Estudos Transversais , Estradiol/administração & dosagem , Estrogênios/administração & dosagem , Estrogênios/efeitos adversos , Feminino , Feminização/induzido quimicamente , Seguimentos , Fatores de Risco de Doenças Cardíacas , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Estudos Retrospectivos , Pessoas Transgênero
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