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1.
Blood ; 143(1): 70-78, 2024 01 04.
Artigo em Inglês | MEDLINE | ID: mdl-37939264

RESUMO

ABSTRACT: The persistence of risk of venous thromboembolism (VTE) due to combined hormonal contraceptives (CHCs), after their cessation, is unknown but important to guide clinical practice. The objective of this prospective cohort study was to define the time until normalization of estrogen-related thrombotic biomarkers after CHC cessation. We enrolled women aged 18 to 50 years who had decided to stop their CHC, excluding those with a personal history of VTE, anticoagulation, or pregnancy. The study started before cessation of CHC, with 6 visits afterwards (at 1, 2, 4, 6, and 12 weeks after cessation). Primary outcomes were normalized sensitivity ratios to activated protein C (nAPCsr) and to thrombomodulin (nTMsr), with sex hormone-binding globulin (SHBG) as a secondary end point. We also included control women without CHC. Among 66 CHC users, from baseline until 12 weeks, average levels of nAPCsr, nTMsr, and SHBG decreased from 4.11 (standard deviation [SD], 2.06), 2.53 (SD, 1.03), and 167 nmol/L (SD, 103) to 1.27 (SD, 0.82), 1.11 (SD, 0.58), and 55.4 nmol/L (SD, 26.7), respectively. On a relative scale, 85.8%, 81.3%, and 76.2% of the decrease from baseline until 12 weeks was achieved at 2 weeks and 86.7%, 85.5%, and 87.8% at 4 weeks after CHC cessation, respectively. Levels were not meaningfully modified throughout the study period among 28 control women. In conclusion, CHC cessation is followed by a rapid decrease in estrogen-related thrombotic biomarkers. Two to 4 weeks of cessation before planned major surgery or withdrawal of anticoagulants in patients with VTE appears sufficient for the majority of women. The trial is registered at www.clinicaltrials.gov as #NCT03949985.


Assuntos
Trombose , Tromboembolia Venosa , Gravidez , Humanos , Feminino , Tromboembolia Venosa/induzido quimicamente , Anticoncepcionais Orais Combinados/efeitos adversos , Fatores de Risco , Estudos Prospectivos , Trombose/induzido quimicamente , Biomarcadores , Estrogênios
2.
Fertil Steril ; 119(6): 976-984, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-36805437

RESUMO

OBJECTIVE: To assess the impact of 3 different ovarian stimulation protocols on surrogate biomarkers of coagulation. DESIGN: Observational multicenter cohort study. SETTING: The study was conducted in assisted reproductive technology (ART) units. PATIENTS: Infertile women undergoing ART in 2017-2019 were included. INTERVENTIONS: None. MAIN OUTCOME MEASURE(S): Our primary outcome was the endogenous thrombin potential (ETP) assessed by the calibrated automated thrombogram. The ETP was measured at baseline (T1), on the day of ovulation triggering (T2), and 7 days after triggering (T3). Three protocols were prescribed according to the standards used and without hormonal before treatment: agonist protocol with human chorionic gonadotropin (hCG) trigger (ag-hCG), antagonist protocol with hCG trigger (atg-hCG), or GnRH agonist trigger. The evolution of ETP was compared among groups using a mixed-effects linear regression model. RESULT(S): Sixty-four women with a mean age of 37.8 years participated in the study: of which 24, 16, 24 received ag-hCG, atg-hCG, and GnRH agonist triggers, respectively. As expected, the mean serum estradiol levels in GnRH agonist trigger were statistically higher at T2 and lower at T3 than that for both ag-hCG and atg-hCG. Overall, the ETP evolution over time was statistically different between the groups. Values were similar between groups at T1 and increased at T2 in each group. The greatest difference occurred between T2 and T3 in each group. The ETP continued to increase at T3 in ag-hCG (+110 nM/L × min) and atg-hCG (+171 nM/L × min), but it remained stable in GnRH agonist trigger (-2 nM/L × min). Sex hormone-binding globulin showed persistent increase at T3 despite the fall in estradiol levels, particularly in the GnRH agonist trigger group. CONCLUSION(S): The ag-hCG and atg-hCG groups were associated with a higher hypercoagulable state at T3 than the GnRH agonist trigger group. However, our results show the persistence of a hypercoagulable state after the GnRH agonist triggering despite a sharp drop in estradiol levels. These findings may support the use of GnRH agonist trigger protocol in patients with high thrombotic risk and gives new insight into the fact that coagulation parameters could be disturbed for long time periods. CLINICAL TRIAL REGISTRATION NUMBER: NCT04188444.


Assuntos
Infertilidade Feminina , Síndrome de Hiperestimulação Ovariana , Gravidez , Humanos , Feminino , Adulto , Síndrome de Hiperestimulação Ovariana/etiologia , Síndrome de Hiperestimulação Ovariana/induzido quimicamente , Fertilização in vitro , Infertilidade Feminina/diagnóstico , Infertilidade Feminina/terapia , Infertilidade Feminina/induzido quimicamente , Taxa de Gravidez , Hormônio Liberador de Gonadotropina , Estudos de Coortes , Indução da Ovulação/métodos , Gonadotropina Coriônica/efeitos adversos , Estradiol
3.
Rev Med Suisse ; 17(755): 1798-1802, 2021 Oct 20.
Artigo em Francês | MEDLINE | ID: mdl-34669295

RESUMO

Progesterone (P4), a steroid primarily secreted by the corpus luteum, placenta and adrenal glands, plays an essential role on female reproductive function. Progestins (PS) are synthetic analogues of P4 with specific steroid receptor affinities. A progestin-only-pill (POP) with an antimineralocorticoid effect was recently marketed with a tolerance and safety profile superior to existing POPs. In contrast, PS with antiandrogenic properties used at high doses for the treatment of hirsutism have been associated with an increased meningioma risk. New clinical and fundamental data open paths for research into the therapeutic use of P4 in cognition, neuroprotection and bone.


La progestérone (P4), stéroïde sécrété principalement par le corps jaune, le placenta et les glandes surrénales, joue un rôle essentiel dans le contrôle de la fonction reproductive de la femme. Les progestatifs de synthèse (PS) sont des analogues avec des affinités spécifiques sur les divers récepteurs stéroïdiens. Une pilule progestative (POP) aux effets antiminéralocorticoïdes a récemment été commercialisée avec un profil de tolérance et de sécurité supérieur aux POP existants. En revanche, des PS aux propriétés antiandrogènes utilisés en forte dose pour le traitement de l'hirsutisme ont été associés à un risque accru de méningiome. De nouvelles données cliniques et fondamentales ouvrent de nouvelles voies de recherche sur l'utilisation thérapeutique de la P4 dans les champs de la cognition, de la neuroprotection et de l'os.


Assuntos
Ginecologia , Feminino , Humanos , Placenta , Gravidez , Progesterona , Progestinas/uso terapêutico
4.
Ann Endocrinol (Paris) ; 82(6): 555-571, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34508691

RESUMO

Premature ovarian insufficiency (POI) is a rare pathology affecting 1-2% of under-40 year-old women, 1 in 1000 under-30 year-olds and 1 in 10,000 under-20 year-olds. There are multiple etiologies, which can be classified as primary (chromosomal, genetic, auto-immune) and secondary or iatrogenic (surgical, or secondary to chemotherapy and/or radiotherapy). Despite important progress in genetics, more than 60% of cases of primary POI still have no identifiable etiology; these cases are known as idiopathic POI. POI is defined by the association of 1 clinical and 1 biological criterion: primary or secondary amenorrhea or spaniomenorrhea of>4 months with onset before 40 year of age, and elevated follicle-stimulating hormone (FSH)>25IU/L on 2 assays at>4 weeks' interval. Estradiol level is low, and anti-Müllerian hormone (AMH) levels have usually collapsed. Initial etiological work-up comprises auto-immune assessment, karyotype, FMR1 premutation screening and gene-panel study. If all of these are normal, the patient and parents may be offered genome-wide analysis under the "France Génomique" project. The term ovarian insufficiency suggests that the dysfunction is not necessarily definitive. In some cases, ovarian function may fluctuate, and spontaneous pregnancy is possible in around 6% of cases. In confirmed POI, hormone replacement therapy is to be recommended at least up to the physiological menopause age of 51 years. Management in a rare diseases center may be proposed.


Assuntos
Insuficiência Ovariana Primária/diagnóstico , Insuficiência Ovariana Primária/terapia , Adulto , Hormônio Antimülleriano , Feminino , Hormônio Foliculoestimulante , Proteína do X Frágil da Deficiência Intelectual , França , Terapia de Reposição Hormonal , Humanos
5.
J Endocr Soc ; 5(7): bvab032, 2021 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-34095689

RESUMO

CONTEXT: Primary ovarian insufficiency (POI) affects 1% of women under 40 years of age. POI is idiopathic in more than 70% of cases. Though many candidate genes have been identified in recent years, the prevalence and pathogenicity of abnormalities are still difficult to establish. OBJECTIVE: Our primary objective was to evaluate the prevalence of gene variations in a large prospective multicentric POI cohort. Our secondary objective was to evaluate the correlation between phenotype and genotype. METHODS: Two hundred and sixty-nine well-phenotyped POI patients were screened for variants of 18 known POI genes (BMP15, DMC1, EIF2S2, FIGLA, FOXL2, FSHR, GDF9, GPR3, HFM1, LHX8, MSH5, NOBOX, NR5A1, PGRMC1, STAG3, XPNPEP2, BHLB, and FSHB) by next generation sequencing (NGS). Abnormalities were classified as "variant" or "variant of unknown signification" (VUS) according to available functional tests or algorithms (SIFT, Polyphen-2, MutationTaster). RESULTS: One hundred and two patients (38%) were identified as having at least 1 genetic abnormality. Sixty-seven patients (25%) presented at least 1 variant. Forty-eight patients presented at least 1 VUS (18%). Thirteen patients (5%) had combined abnormalities. NOBOX variants were the most common gene variants involved in POI (9%). Interestingly, we saw no significant differences in the previous family history of POI, ethnic origin, age at onset of POI, primary amenorrhea, or secondary menstrual disturbances between the different genotypes. CONCLUSION: In our study, a high percentage of patients presented gene variants detected by NGS analysis (38%). Every POI patient should undergo NGS analysis to improve medical cares of the patients.

6.
Cephalalgia ; 40(6): 606-613, 2020 05.
Artigo em Inglês | MEDLINE | ID: mdl-31810400

RESUMO

BACKGROUND: Studies have shown a significant association between migraine and endometriosis, but no study has explored the relationship between migraine and endometriosis phenotypes: Superficial peritoneal endometriosis, ovarian endometrioma, and deep infiltrating endometriosis. METHODS: We conducted a case-control study using data collected from 314 women aged 18 to 42 years who had undergone surgery for benign gynecological conditions between January 2013 and December 2015. All women completed a self-administered headache questionnaire according to the IHS classification. Cases (n = 182) are women with histologically proven endometriosis and controls are women (n = 132) without endometriosis. Occurrence of migraine was studied according to endometriosis phenotypes. RESULTS: Migraine prevalence in cases was significantly higher compared with controls (35.2% vs. 17.4%, p = 0.003). The risk of endometriosis was significantly higher in migrainous women (OR = 2.62; 95% CI = 1.43-4.79). When we take into account endometriosis phenotypes, the risk of ovarian endometrioma and deep infiltrating endometriosis were significant (OR = 2.78; 95% CI = 1.11-6.98 and OR = 2.51; 95% CI = 1.25-5.07, respectively). In women with endometriosis, the intensity of chronic non-cyclical pelvic pain was significantly greater for those with migraine (visual analogic scale (VAS) = 3.6 ± 2.9) compared with the women without headache (VAS = 2.3 ± 2.8, p = 0.0065). CONCLUSION: Our study shows a significant association between migraine and endometriosis. In clinical practice, women of reproductive age who suffer from migraine should be screened for endometriosis criteria in order to optimise the medical and therapeutic care of this condition.


Assuntos
Endometriose/complicações , Endometriose/patologia , Transtornos de Enxaqueca/epidemiologia , Adolescente , Adulto , Estudos de Casos e Controles , Feminino , França/epidemiologia , Humanos , Fenótipo , Adulto Jovem
7.
Thromb Res ; 185: 102-108, 2020 01.
Artigo em Inglês | MEDLINE | ID: mdl-31790999

RESUMO

AIMS: Polycystic ovary syndrome (PCOS) is very prevalent and commonly treated with prothrombotic combined oral contraceptives (COC). Our aim was to systematically review the available evidence to evaluate the risk of venous thromboembolism (VTE) associated with PCOS, and whether observed increased risks may be explained by a higher prevalence of obesity and hormonal treatments. METHOD: For this systematic review and meta-analysis, two authors independently searched MEDLINE, EMBASE and conference proceedings (ISTH, WHITH) from inception through 4.2019 for studies reporting the association of PCOS with VTE risk. Study quality was assessed and relative risk estimates were pooled through random effect models. RESULTS: We identified 5 large observational studies published between 2004 and 2018, most commonly using administrative data, set in Denmark, the USA or the United Kingdom. Compared with participants without PCOS, participants with PCOS had greater risks of VTE in unadjusted analyses (pooled OR 1.70, 95%CI 1.42-2.04, I2 67%). In three studies reporting analyses adjusted for at least obesity and hormonal treatments, PCOS was still associated with greater risks of VTE (pooled OR 1.89, 95%CI 1.60-2.24, I2 27%). CONCLUSIONS: PCOS appears to be a risk factor for VTE, independently of its associated excess weight and greater use of combined oral contraceptives. This should be taken into account in the pharmacological management of PCOS.


Assuntos
Síndrome do Ovário Policístico , Tromboembolia Venosa , Anticoncepcionais Orais Combinados , Feminino , Humanos , Síndrome do Ovário Policístico/complicações , Fatores de Risco , Reino Unido , Tromboembolia Venosa/epidemiologia , Tromboembolia Venosa/etiologia
8.
Eur J Obstet Gynecol Reprod Biol ; 229: 172-178, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-30199816

RESUMO

Endometriosis, a hormone-dependant condition affecting around 10% of women in their reproductive years, has frequent consequences on fertility. Indeed, a proportion of women will require assisted reproductive techniques or surgery in order to achieve pregnancy. Recent refining of stimulation protocols and vitrification techniques has created new possibilities in the field of fertility preservation. As a consequence, oocyte vitrification is now discussed not only in oncologic situations, but also in other conditions at risk of altered ovarian reserve and poor fertility outcome. In endometriosis, various mechanisms can impair ovarian function and diminish ovarian, particularly bilateral or repeated cystectomy. Fertility preservation could represent an option for women with endometriosis but still remains controversial. In order to shed some light on this complex subject and to outline different issues at stake we conducted a SWOT analysis highlighting strengths, weaknesses, opportunities and threats of oocyte vitrification in women with endometriosis.


Assuntos
Endometriose , Preservação da Fertilidade , Feminino , Humanos
9.
J Clin Endocrinol Metab ; 103(12): 4482-4490, 2018 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-30124894

RESUMO

Context: Mutations in the kisspeptin receptor (KISS1R) gene have been reported in a few patients with normosmic congenital hypogonadotropic hypogonadism (nCHH) (OMIM #146110). Objectives: To describe a female patient with nCHH and a novel homozygous KISS1R mutation and to assess the role of kisspeptin pathway to induce an ovulation by GnRH pulse therapy. Design, Setting, and Intervention: Observational study of a patient including genetic and kisspeptin receptor functions and treatment efficiency using a GnRH pump. Main Outcome Measure: Response to pulsatile GnRH therapy. Results: A partial isolated gonadotropic deficiency was diagnosed in a 28-year-old woman with primary amenorrhea and no breast development. A novel homozygous c.953T>C variant was identified in KISS1R. This mutation led to substitution of leucine 318 for proline (p.Leu318Pro) in the seventh transmembrane domain of KISS1R. Signaling via the mutated receptor was profoundly impaired in HEK293-transfected cells. The mutated receptor was not detected on the membrane of HEK293-transfected cells. After several pulsatile GnRH therapy cycles, an LH surge with ovulation and pregnancy was obtained. Conclusion: GnRH pulsatile therapy can induce an LH surge in a woman with a mutated KISS1R, which was previously thought to be completely inactivated in vivo.


Assuntos
Amenorreia/tratamento farmacológico , Hormônio Liberador de Gonadotropina/administração & dosagem , Hipogonadismo/tratamento farmacológico , Hormônio Luteinizante/metabolismo , Receptores de Kisspeptina-1/genética , Adulto , Amenorreia/genética , Amenorreia/metabolismo , Feminino , Células HEK293 , Homozigoto , Humanos , Hipogonadismo/genética , Hipogonadismo/metabolismo , Kisspeptinas/metabolismo , Mutação com Perda de Função , Ovulação/efeitos dos fármacos , Ovulação/metabolismo , Gravidez , Pulsoterapia , Receptores de Kisspeptina-1/deficiência , Transdução de Sinais/genética , Resultado do Tratamento
11.
Medicine (Baltimore) ; 96(34): e7734, 2017 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-28834877

RESUMO

Information on the clinical and biological characteristics of combined hormonal contraceptives (CHC) users experiencing a venous thromboembolism (VTE) event is scarce. Better knowledge of factors determining the VTE risk in CHC users could help identify women at high risk.Data were obtained from a large cohort of consecutive women with the first documented VTE event. Cross-sectional analysis of clinical and biological characteristics of the women was performed.Of the 3009 women with the first VTE included, 31% were nonusers and 69% CHC users at time of VTE. CHC users were significantly younger (29.0 ±â€Š7.2) than nonusers (31.6 ±â€Š7.1) (P < .001). No difference in VTE familial history was observed between the 2 groups. Compared with nonusers, the CHC users experienced more frequently pulmonary embolism: odds ratio (OR) = 1.28 (1.06-1.55; 95% confidence interval [CI]), factor V Leiden mutations were more frequent in this group (OR = 1.41 [1.11-1.80; 95% CI]). Venous sclerotherapy and travel were associated with VTE in CHC users, whereas surgery and bed rest were significantly associated with VTE in nonusers. Finally, 2/3 of CHC users with VTE had additional VTE risk factors.CHC users experiencing the first VTE differ from nonusers with respect to clinical and genetic background. Better understanding of the characteristics of VTE and associated risk factors could allow more appropriate management of these women and contribute to more accurate benefit-risk assessment before prescribing a CHC.


Assuntos
Anticoncepcionais Orais Combinados/administração & dosagem , Tromboembolia Venosa/epidemiologia , Adolescente , Adulto , Idade de Início , Estudos Transversais , Feminino , Humanos , Pessoa de Meia-Idade , Razão de Chances , Medição de Risco , Fatores de Risco , Escleroterapia/estatística & dados numéricos , Procedimentos Cirúrgicos Operatórios/estatística & dados numéricos , Viagem/estatística & dados numéricos , Adulto Jovem
12.
BMC Med Genet ; 18(1): 44, 2017 04 26.
Artigo em Inglês | MEDLINE | ID: mdl-28446136

RESUMO

BACKGROUND: Spontaneous ovarian hyperstimulation syndrome (sOHSS) is a rare event occurring mostly during natural pregnancy. Among described etiologies, some activating mutations of FSH receptor (FSHR) have been identified. CASE PRESENTATION: We report hereby the case of a non-pregnant women with three episodes of sOHSS. Hormonal evaluation was normal and no pituitary adenoma was detected. However, genetic analysis identified a novel heterozygous FSHR mutation (c.1901 G > A). This R634H mutation is the first described in the cytoplasmic tail of the receptor. Functional analysis failed to reveal constitutive activity of the mutant but a decreased cAMP production in response to FSH. The weak activity of this mutant is correlated with a markedly reduced cell surface expression. CONCLUSION: Pathophysiology of non gestationnal sOHSS is still ill established. The molecular characterization of this new mutant indicates that it might not be at play. Therefore, further investigations are needed to improve knowledge of the molecular mechanism of this syndrome.


Assuntos
Citoplasma/metabolismo , Mutação , Síndrome de Hiperestimulação Ovariana/genética , Receptores do FSH/genética , Adulto , Sequência de Aminoácidos , Animais , Feminino , Humanos , Receptores do FSH/química , Homologia de Sequência de Aminoácidos
13.
Gynecol Endocrinol ; 32(11): 872-874, 2016 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-27689825

RESUMO

In this report, we describe the first case ever reported in the literature, of an inhibin-A (INHA) and inhibin-B (INHB) producing fibrothecoma. A post-menopausal woman was referred to our unit because of follicle stimulating hormone (FSH) level below the reference interval for postmenopausal women. By contrast luteinizing hormone, hCG, and estradiol levels were within normal range. This discrepancy suggested the secretion of FSH inhibitory factors. INHB and INHA levels were markedly elevated for age, 475 pg/mL and 100 pg/mL, respectively. Ultrasonography and MRI showed a pelvic mass of indeterminate nature. Abnormal inhibin secretion is generally observed in granulosa cell tumors. In this case this etiology was unlikely because of low estradiol and AMH levels. Surgical exploration revealed a 10 cm mass of the left ovary proven histologically to be an ovarian fibrothecoma (OFT). After tumor removal, INHB and INHA levels decreased rapidly. Only three cases of OFT with an important secretion of INHB have been reported to date. INHA secretion has never been associated with OFT. There is a need to develop coupled hormone and imaging strategies to diagnose the source of INH secretion in case of FSH/LH discrepancy.


Assuntos
Fibroma/metabolismo , Hormônio Foliculoestimulante/sangue , Inibinas/sangue , Neoplasias Ovarianas/metabolismo , Pós-Menopausa/sangue , Tumor da Célula Tecal/metabolismo , Feminino , Fibroma/diagnóstico por imagem , Fibroma/cirurgia , Humanos , Pessoa de Meia-Idade , Neoplasias Ovarianas/diagnóstico por imagem , Neoplasias Ovarianas/cirurgia , Tumor da Célula Tecal/diagnóstico por imagem , Tumor da Célula Tecal/cirurgia
14.
Orphanet J Rare Dis ; 11(1): 124, 2016 09 13.
Artigo em Inglês | MEDLINE | ID: mdl-27619482

RESUMO

BACKGROUND: Hypermobile Ehlers-Danlos syndrome (hEDS), is probably the most common disease among heritable connective tissue disorders. It affects women more than men and causes symptoms in multiple organs. It is associated with chronic pain, skin fragility and abnormal bleeding. These characteristics may hamper reproductive life. We conducted a study to evaluate the gynecologic and obstetric outcomes in women with hEDS. We also explored a possible hormonal modulation of the hEDS symptoms. The gynecologic and obstetric history of 386 consecutive women diagnosed with hEDS was collected by a standardized questionnaire and a medical consultation performed by a senior gynecologist in an expert centre for hEDS between May 2012 and December 2014. RESULTS: We observed a high frequency of gynecologic complaints, specifically: menorrhagia (76 %), dysmenorrhea (72 %) and dyspareunia (43 %). Endometriosis was not highly prevalent in this population. The obstetric outcomes were similar to those of the general French population for deliveries by cesarean section (14.6 %) and premature births (6.2 %) but the incidence of multiple spontaneous abortion (13 %) and spontaneous abortion (28 %) were significantly higher. A subset of women were sensitive to hormonal fluctuations with more severe symptoms occurring during puberty, prior to menstruation, during the postpartum period as well as on oral contraception. CONCLUSIONS: Increased awareness of the gynecological symptomatology in women with hEDS can help discriminate between endometriosis and thus prevent useless, and potentially dangerous, surgery. This study also suggests that hormonal modulation may be an appropriate treatment for a subset of women with hEDS.


Assuntos
Síndrome de Ehlers-Danlos/patologia , Síndrome de Ehlers-Danlos/fisiopatologia , Aborto Habitual/etiologia , Aborto Habitual/patologia , Aborto Habitual/fisiopatologia , Cesárea , Estudos de Coortes , Dismenorreia/etiologia , Dismenorreia/patologia , Dismenorreia/fisiopatologia , Dispareunia/etiologia , Dispareunia/patologia , Dispareunia/fisiopatologia , Síndrome de Ehlers-Danlos/complicações , Endometriose/patologia , Endometriose/fisiopatologia , Feminino , Humanos , Menorragia/etiologia , Menorragia/patologia , Menorragia/fisiopatologia , Trabalho de Parto Prematuro/etiologia , Trabalho de Parto Prematuro/patologia , Trabalho de Parto Prematuro/fisiopatologia , Gravidez
15.
Oncotarget ; 7(29): 45317-45330, 2016 Jul 19.
Artigo em Inglês | MEDLINE | ID: mdl-27246982

RESUMO

Women with inherited BRCA1 mutations have an elevated risk (40-80%) for developing breast and ovarian cancers. Reproductive history has been reported to alter this risk, suggesting a relationship between ovarian hormone signaling and BRCA1-related tumor development. BRCA1 interactions with estrogen receptor (ER) and progesterone receptor (PR) signaling were previously described in human breast cancer cell lines and mouse models. However, few studies have examined the effect of ovarian hormone regulation in normal human breast tissues bearing a heterozygous BRCA1 mutation. This study compares the proliferation level (Ki67) and the expression of ER, PR, and of the PR target gene, fatty acid synthase (FASN), in histologically normal breast tissues from women with BRCA1 mutations (BRCA1+/mut, n=23) or without BRCA1 mutations (BRCA1+/+, n=28). BRCA1+/mut tissues showed an increased proliferation and impaired hormone receptor expression with a marked loss of the PR isoform, PR-B. Responses to estradiol and progesterone treatments in BRCA1+/mut and BRCA1+/+ breast tissues were studied in a mouse xenograft model, and showed that PR and FASN expression were deregulated in BRCA1+/mut breast tissues. Progesterone added to estradiol treatment increased the proliferation in a subset of BRCA1+/mut breast tissues. The PR inhibitor, ulipristal acetate (UPA), was able to reverse this aberrant progesterone-induced proliferation. This study suggests that a subset of women with BRCA1 mutations could be candidates for a UPA treatment as a preventive breast cancer strategy.


Assuntos
Neoplasias da Mama/prevenção & controle , Mama/patologia , Genes BRCA1 , Mutação , Receptores de Progesterona/fisiologia , Adulto , Animais , Neoplasias da Mama/genética , Neoplasias da Mama/patologia , Linhagem Celular Tumoral , Proliferação de Células , Estradiol/farmacologia , Feminino , Humanos , Camundongos , Pessoa de Meia-Idade , Norpregnadienos/farmacologia , Receptores de Estrogênio/análise , Receptores de Progesterona/análise , Receptores de Progesterona/antagonistas & inibidores , Transdução de Sinais/fisiologia , Ensaios Antitumorais Modelo de Xenoenxerto
16.
Breast Cancer Res Treat ; 156(2): 401-2, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-26956972

RESUMO

Erratum to: Breast Cancer Res Treat (2013),142:283­296,DOI 10.1007/s10549-013-2722-8. In the original publication of the article, the blot corresponding to the total P38 protein content for the conditions siCtl and siBRCA1 in Fig. 7a was incorrectly laid out. The corrected Fig. 7a is given in this erratum.The

18.
Breast Cancer Res Treat ; 142(2): 283-96, 2013 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-24166279

RESUMO

Glucocorticoids (GCs) regulate cell homeostasis and can affect carcinogenesis. An inherited germline mutation in the BRCA1 gene, a tumor suppressor gene, confers a predisposition to breast and ovarian cancers. BRCA1 participates in the maintenance of genome stability through DNA repair, in cellular homeostasis through gene transcription, and in signaling regulation. The interaction between BRCA1 and the glucocorticoid receptor (GR) signaling pathway was studied in normal breast tissues and triple-negative breast cancers from BRCA1 mutation carriers. A loss of the active Ser211 phosphorylated form of GR was found in the mutant as compared to the non-mutant. In in vitro studies, the BRCA1 status in breast cancer cell lines regulates GC-dependent proliferation/apoptosis and impacts GC-dependent gene expression. The lack of BRCA1 inhibited dexamethasone actions on its target genes' expression and the opposite effect was seen with BRCA1 overexpression. BRCA1 overexpression enhances MAPK p38 phosphorylation, resulting in an amplification of GR phosphorylation on Ser 211 and GR basal expression. Our results indicate that BRCA1 is essential to develop an efficient GC signalization. GR P-Ser211 levels may constitute an important diagnostic factor for screening BRCA1 loss of expression in tumors from BRCA1 mutation carriers as well as in sporadic BRCAness tumors. This marker may help to optimize therapeutic strategies.


Assuntos
Proteína BRCA1/genética , Neoplasias da Mama/genética , Receptores de Glucocorticoides/metabolismo , Adulto , Apoptose , Proteína BRCA1/metabolismo , Neoplasias da Mama/metabolismo , Neoplasias da Mama/patologia , Linhagem Celular Tumoral , Proliferação de Células , Células Cultivadas , Dexametasona/farmacologia , Feminino , Regulação da Expressão Gênica/efeitos dos fármacos , Glucocorticoides/metabolismo , Heterozigoto , Humanos , Glândulas Mamárias Humanas/citologia , Glândulas Mamárias Humanas/efeitos dos fármacos , Pessoa de Meia-Idade , Mutação , Fosforilação , Receptores de Glucocorticoides/genética , Valores de Referência , Serina
19.
Hum Reprod ; 27(9): 2785-98, 2012 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-22740493

RESUMO

BACKGROUND: Antiprogestins are of growing interest for the development of new treatments in the gynecological field. Ulipristal acetate (UPA) is a progesterone receptor (PR) modulator considered for long-term administration in contraception and is currently being registered for the treatment of uterine fibroids. In light of the influences of hormonal dysfunction in breast pathologies, the secondary consequences of chronic UPA therapy need to be established. The aim of this study was to determine UPA actions mediated by PR and glucocorticoid receptor (GR) in normal and transformed breast. METHODS: UPA, progesterone (P) and dexamethasone (DEX) effects were observed on PR and GR responsive genes and on proliferation and apoptosis of normal human breast epithelial (HBE) and breast cancer cells. Human normal breast tissue samples were xenografted in athymic mice and treated with estradiol (E2), or E2 + P, or E2 + P + UPA. RESULTS: Analysis of PR and GR reporter gene transactivation and their respective endogenous target genes indicated that UPA exerted anti-progestational and anti-glucocorticoid activity in both types of cells with a more pronounced effect in cancer cells. When combined with P or DEX, UPA limits the proliferation of HBE cells but increases growth in breast cancer cell lines. UPA administration had no impact on the mitotic index on xenografted human breast tissue exposed to gonadal hormones at similar concentrations to those present in normal women. CONCLUSIONS: Although further clinical trials are required to confirm that the results from our experimental models can be extrapolated to women treated with UPA, they suggest that such treatment would not be deleterious to normal breast tissue at least for a cycle (28 days) of continuous administration.


Assuntos
Mama/efeitos dos fármacos , Mama/patologia , Anticoncepcionais/farmacologia , Norpregnadienos/farmacologia , Adolescente , Adulto , Animais , Proteínas Reguladoras de Apoptose/biossíntese , Mama/metabolismo , Ciclina A/biossíntese , Dexametasona/farmacologia , Células Epiteliais/efeitos dos fármacos , Estradiol/metabolismo , Ácido Graxo Sintase Tipo I/biossíntese , Feminino , Genes Reporter , Humanos , Antígeno Ki-67/biossíntese , Leiomioma/metabolismo , Glândulas Mamárias Humanas/metabolismo , Glândulas Mamárias Humanas/patologia , Proteínas de Membrana/biossíntese , Camundongos , Camundongos Nus , Pessoa de Meia-Idade , Progesterona/farmacologia , Proteínas Proto-Oncogênicas c-bcl-2/biossíntese , Receptores de Glucocorticoides/metabolismo , Ativação Transcricional , Transplante Heterólogo
20.
Gynecol Endocrinol ; 28(11): 921-4, 2012 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-22731702

RESUMO

OBJECTIVE: To analyze the history of relapses in idiopathic granulomatous mastitis (IGM) and to define an appropriate therapeutic strategy. The duration and number of relapses are unpredictable, and the roles of surgery and corticosteroids remain controversial. STUDY DESIGN: A series of 14 patients with IGM and a mean follow-up of 61.5 ± 73 (SD) months were retrospectively studied in the Gynecology Unit (Hotel Dieu Hospital, Paris, France). Main outcome measure was number of relapses per year before and following corticosteroid therapy. Comparison of the two groups was performed with matched t-test. RESULTS: A total of 125 episodes were analyzed. Before steroid treatment, 60 recurrences occurred, corresponding to a mean of 4.03 ± 4.22 (SD) relapses per year. After the first treatment with prednisone, patients experienced 47 relapses, representing a mean of 1.11 ± 1.27 (SD) relapses per year (p = 0.0371). CONCLUSIONS: Medical treatment with steroid reduces the duration and number of episodes. It also prevents the need for invasive breast surgery.


Assuntos
Corticosteroides/uso terapêutico , Mastite Granulomatosa/tratamento farmacológico , Adolescente , Adulto , Feminino , Seguimentos , Mastite Granulomatosa/cirurgia , Humanos , Pessoa de Meia-Idade , Recidiva , Estudos Retrospectivos , Resultado do Tratamento , Adulto Jovem
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