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1.
Front Psychol ; 15: 1187179, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38449756

RESUMO

Introduction: Relationship Obsessive-Compulsive Disorder is characterized by the presence of relationship-centered or partner-focused obsessions and compulsions that determine a great sense of doubt toward the partner or the relationship. Personality characteristics, including perfectionism, are involved in the development of Relationship Obsessive-Compulsive Disorder, and could predispose the individual to excessive doubts and preoccupations regarding the "adequacy of the couple" or the physical appearance of one's partner. Evidence from epidemiological research shows that the LGB community can present a high risk and prevalence of obsessive-compulsive symptoms and recent research demonstrated the usefulness of the DSM-5 personality model in understanding the personality of sexual minorities. However, further research is necessary to deepen our knowledge of the relationship between these variables in the LGB community. The aim of the present study was to compare a group of heterosexual individuals to a group of LGB individuals regarding personality traits, perfectionism, and relationship obsessive-compulsive symptoms. Methods: A total of 200 participants, 98 in the heterosexual group and 102 in the LGB group, were enrolled in the study and completed a psychological battery comprised of the Obsessive-Compulsive Inventory-Revised, Personality Inventory for DSM-5, Relationship Obsessive-Compulsive Inventory, Partner-Related Obsessive-Compulsive Symptom Inventory, and Multidimensional Perfectionism Scale. Results: The results show that LGB individuals tend to report greater feelings of doubt regarding the partner's love, more negative emotions (Negative Affect) and Antagonism, and greater perfectionism traits compared to heterosexual individuals. Conclusion: These findings underline the necessity to consider the implementation of personalized interventions in clinical practice and the importance of initiating early preventive programs in sexual minority communities.

2.
Minerva Obstet Gynecol ; 73(5): 614-620, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34751529

RESUMO

BACKGROUND: Hormonal pills are among the most widely contraceptive methods used by women, despite the possible onset of different adverse events. To minimize the risk of thrombosis-related adverse events, different formulations and doses have been investigated. Micronized estradiol (E2)/nomegestrol acetate (NOMAC) 24+4 is the first monophasic combined oral contraceptive pill containing natural E2, the same steroid produced by the granulosa cells of women ovaries. This combination presents an improved effect on hemostasis and metabolism compared to ethinyl-estradiol (EE)-based products and may be considered a good option to meet women's needs in a more physiological way. Despite the benefits of E2, its use is still not so common among combined oral contraceptives (COC). METHODS: Seventy-seven Italian gynecologists were involved and asked to answer a survey to investigate some aspects related to contraception. The results of the survey were discussed within the same gynecologists and a panel of experts during eight macro-regional meetings. RESULTS: The survey demonstrated that clinicians dedicate 40-60% of their time to contraception and confirmed the importance of the choice of the contraceptive pill, which is mostly prescribed for contraceptive purposes. Moreover, COC containing E2 is considered as the first choice in oral contraception and meets the features of an ideal pill. CONCLUSIONS: Italian gynecologists reported that E2-based pill presents benefits related to safety, good tolerability, and low adverse events, in particular, related to a reduced thromboembolic risk. Research market data highlight that the use of these types of COC should expand with respect to traditional compounds containing EE.


Assuntos
Anticoncepcionais Orais Combinados , Contracepção Hormonal , Consenso , Conferências de Consenso como Assunto , Anticoncepcionais Orais Combinados/efeitos adversos , Etinilestradiol/efeitos adversos , Feminino , Humanos , Itália
3.
Reprod Biol Endocrinol ; 14(1): 52, 2016 Aug 31.
Artigo em Inglês | MEDLINE | ID: mdl-27582109

RESUMO

BACKGROUND: d-chiroinositol (DCI) is a inositolphosphoglycan (IPG) involved in several cellular functions that control the glucose metabolism. DCI functions as second messenger in the insulin signaling pathway and it is considered an insulin sensitizer since deficiency in tissue availability of DCI were shown to cause insulin resistance (IR). Polycystic ovary syndrome (PCOS) is a pathological condition that is often accompanied with insulin resistance. DCI can positively affects several aspect of PCOS etiology decreasing the total and free testosterone, lowering blood pressure, improving the glucose metabolism and increasing the ovulation frequency. The purpose of this study was to evaluate the effects of DCI and insulin combined with gonadotrophins namely follicle-stimulating hormone (FSH) and luteinizing hormone (LH) on key steroidogenic enzymes genes regulation, cytochrome P450 family 19 subfamily A member 1 (CYP19A1) and cytochrome P450 side-chain cleavage (P450scc) in primary cultures of human granulosa cells (hGCs). We also investigated whether DCI, being an insulin-sensitizer would be able to counteract the expected stimulator activity of insulin on human granulosa cells (hGCs). METHODS: The study was conducted on primary cultures of hGCs. Gene expression was evaluated by RT-qPCR method. Statistical analysis was performed applying student t-test, as appropriate (P < 0.05) set for statistical significance. RESULTS: DCI is able to reduce the gene expression of CYP19A1, P450scc and insulin-like growth factor 1 receptor (IGF-1R) in dose-response manner. The presence of DCI impaired the increased expression of steroidogenic enzyme genes generated by the insulin treatment in gonadotrophin-stimulated hGCs. CONCLUSIONS: Insulin acts as co-gonadotrophin increasing the expression of steroidogenic enzymes genes in gonadotrophin-stimulated granulosa cells. DCI is an insulin-sensitizer that counteracts this action by reducing the expression of the genes CYP19A1, P450scc and IGF-1R. The ability of DCI to modulate in vitro ovarian activity of insulin could in part explain its beneficial effect when used as treatment for conditions associated to insulin resistance.


Assuntos
Aromatase/biossíntese , Gonadotropinas/farmacologia , Células da Granulosa/efeitos dos fármacos , Células da Granulosa/enzimologia , Inositol/farmacologia , Receptor IGF Tipo 1/biossíntese , Adulto , Células Cultivadas , Relação Dose-Resposta a Droga , Indução Enzimática/efeitos dos fármacos , Indução Enzimática/fisiologia , Feminino , Fertilização In Vitro/métodos , Humanos
4.
J Assist Reprod Genet ; 33(1): 95-100, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26631403

RESUMO

PURPOSE: Anti Müllerian Hormone (AMH) has a negative and inhibitory role in many functions of human granulosa-lutein cells (hGCs) including notoriously the reduction of the aromatase CYP19A1 expression induced by follicle-stimulating hormone (FSH). No data have been provided on the possible role of AMH in modulating the response to luteinizing hormone (LH) (alone or combined with FSH) as well as its effect on other enzymes involved in steroidogenesis including aromatase P450scc. The aim of this study was to investigate the role of AMH as regulator of the basal and stimulated steroids production by hGCs. METHODS: Primary culture of hGCs were incubated with hormones AMH, LH, and FSH, alone or in combination. The CYP19A1 and P450scc messenger RNA (mRNA) expression, normalized by housekeeping ribosomal protein S7 (RpS7) gene, was evaluated by reverse transcriptase quantitative PCR (RT-qPCR). Each reaction was repeated in triplicate. Negative controls using corresponding amount of vehicle control for each hormone treatment were performed. RESULT: AMH did not modulate the basal mRNA expression of both aromatase genes at any of the concentrations tested. Meanwhile, the strong mRNA induction of CYP19A1 and P450scc generated by a 24-h gonadotropin treatment (alone and combined) was suppressed by 20 ng/ml AMH added to culture medium. CONCLUSIONS: These findings contribute in clarifying the relationship between hormones regulating the early phase of steroidogenesis confirming that AMH is playing a suppressive role on CYP19A1 expression stimulated by gonadotropin in hGCs. Furthermore, a similar inhibitory effect for AMH was observed on P450scc gene expression when activated by gonadotropin treatment.


Assuntos
Hormônio Antimülleriano/metabolismo , Aromatase/biossíntese , Enzima de Clivagem da Cadeia Lateral do Colesterol/biossíntese , Células da Granulosa/metabolismo , Hormônio Antimülleriano/administração & dosagem , Meios de Cultura/química , Estradiol/biossíntese , Feminino , Hormônio Foliculoestimulante/administração & dosagem , Hormônio Foliculoestimulante/metabolismo , Regulação da Expressão Gênica no Desenvolvimento/efeitos dos fármacos , Gonadotropinas/administração & dosagem , Células da Granulosa/efeitos dos fármacos , Humanos , Hormônio Luteinizante/administração & dosagem , Hormônio Luteinizante/metabolismo , Cultura Primária de Células , RNA Mensageiro/biossíntese
5.
Gynecol Endocrinol ; 31(10): 774-8, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-26291811

RESUMO

OBJECTIVE: To study the three cycles effect on primary dysmenorrhea of the monophasic 24/4 estradiol/nomegestrol acetate (E2/NOMAC) and of the 21/7 ethinyl-estradiol/chlormadinone acetate (EE/CMA) oral contraceptive. The tolerability and the effect of both preparations on metabolism and health-related quality of life were also evaluated. DESIGN: Prospective observational cohort study. SETTING: Tertiary gynecologic center for pelvic pain. PATIENTS: Subjects with primary dysmenorrhea requiring an oral contraceptive, who spontaneously selected either E2/NOMAC (n = 20) or EE/CMA (n = 20). MAIN OUTCOME MEASURES: Visual Analogue Scale (VAS) score for dysmenorrhea, Short Form-36 questionnaire for health-related quality of life, lipoproteins and days of menstrual bleeding (withdrawal bleeding during oral contraceptive). RESULTS: Mean age and body mass index (BMI) were similar between the two groups. The final analysis was performed on 34 women, 15 in E2/NOMAC and 19 in EE/CMA group. Compliance with treatment was significantly higher with EE/CMA (100%) than E2/NOMAC (75%) (p = 0.02). Both treatments significantly (p < 0.0001) reduced VAS of primary dysmenorrhea, similarly (E2/NOMAC by a mean of 74.7%, EE/CMA by a mean of 78.4%; p = 0.973). Only E2/NOMAC significantly increased SF-36 score (p = 0.001), both in physical (p = 0.001) and mental domains (p = 0.004). The mean number of days of menstrual bleeding was significantly reduced in E2/NOMAC group (from 4.86 ± 1.20 d to 2.64 ± 1.59 d, p = 0.0005 versus baseline, p = 0.007 versus EE/CMA group). BMI did not vary in either group. E2/NOMAC did not change lipoproteins and apoproteins while EE/CMA increased total cholesterol (p = 0.0114), HDL-cholesterol (p = 0.0008), triglycerides (p = 0.002), apoprotein-A1 (Apo-A1; p = 0.0006) and apopoprotein-B (Apo-B; p = 0.008), decreasing LDL/HDL ratio (p = 0.024). CONCLUSIONS: Both oral contraceptives reduced similarly primary dysmenorrhea, with E2/NOMAC also reducing withdrawal bleedings and being neutral on lipid metabolism.


Assuntos
Acetato de Clormadinona/uso terapêutico , Anticoncepcionais Orais Hormonais/uso terapêutico , Dismenorreia/tratamento farmacológico , Estradiol/uso terapêutico , Etinilestradiol/uso terapêutico , Megestrol/uso terapêutico , Norpregnadienos/uso terapêutico , Adulto , Combinação de Medicamentos , Feminino , Humanos , Estudos Prospectivos , Qualidade de Vida , Resultado do Tratamento , Adulto Jovem
6.
J Assist Reprod Genet ; 32(6): 931-7, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-25925345

RESUMO

PURPOSE: to compare the baseline characteristics and chance of live birth in the different categories of poor responders identified by the combinations of the Bologna criteria and establish whether these groups comprise a homogenous population. METHODS: database containing clinical and laboratory information on IVF treatment cycles carried out at the Mother-Infant Department of the University Hospital of Modena between year 2007 and 2011 was analysed. This data was collected prospectively and recorded in the registered database of the fertility centre. Eight hundred and thirty women fulfilled the inclusion/ exclusion criteria of the study and 210 women fulfilled the Bologna criteria definition for poor ovarian response (POR). Five categories of poor responders were identified by different combinations of the Bologna criteria. RESULTS: There were no significant differences in female age, AFC, AMH, cycle cancellation rate and number of retrieved oocytes between the five groups. The live birth rate ranged between 5.5 and 7.4 % and was not statistically different in the five different categories of women defined as poor responders according to the Bologna criteria. CONCLUSION: The study demonstrates that the different groups of poor responders based on the Bologna criteria have similar IVF outcomes. This information validates the Bologna criteria definition as women having a uniform poor prognosis and also demonstrates that the Bologna criteria poor responders in the various subgroups represent a homogenous population with similar pre-clinical and clinical outcomes.


Assuntos
Coeficiente de Natalidade , Nascido Vivo , Ovário/efeitos dos fármacos , Indução da Ovulação/métodos , Adulto , Fatores Etários , Bases de Dados Factuais , Feminino , Fertilização In Vitro , Humanos , Recuperação de Oócitos , Reserva Ovariana , Resultado do Tratamento
7.
Eur J Obstet Gynecol Reprod Biol ; 178: 48-50, 2014 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-24809988

RESUMO

OBJECTIVES: Oral contraceptives (OCs) containing androgenic second and third generation progestins decrease insulin sensitivity (SI). In this study we investigated whether an oral contraceptive containing the anti-androgenic progestin drospirenone (DRSP) still alters SI. Lipid modifications were investigated as well. STUDY DESIGN: Eleven young healthy women were allocated to receive for 6 months ethinyl-estradiol (EE) 30µg plus DRSP (3mg). SI and glucose utilization independent of insulin (Sg) was investigated by the minimal model method. Lipid modifications were also analyzed. RESULTS: SI did not vary during EE/DRSP (from 3.72±2.62 to 3.29±2.93; p=0.73). Similarly, values of Sg did not vary (from 0.03±0.02 to 0.032±0.014; p=0.87). An increase was observed in HDL cholesterol (9.4±9.8mg/dl; p=0.05) and triglycerides (46.9±75.1mg/dl; p=0.046), with no modification in LDL cholesterol (-4.64±1.704mg/dl; p=0.6). CONCLUSIONS: EE/DRSP does not deteriorate SI. These results are reassuring for the long-term use of this association.


Assuntos
Androstenos/administração & dosagem , Glicemia/metabolismo , Anticoncepcionais Orais Combinados/uso terapêutico , Resistência à Insulina/fisiologia , Adulto , HDL-Colesterol/sangue , Etinilestradiol/administração & dosagem , Feminino , Humanos , Insulina/sangue , Triglicerídeos/sangue
8.
J Ovarian Res ; 6(1): 11, 2013 Feb 06.
Artigo em Inglês | MEDLINE | ID: mdl-23388048

RESUMO

BACKGROUND: The FSH starting dose is usually chosen according to women's age, anamnesis, clinical criteria and markers of ovarian reserve. Currently used markers include antral follicle count (AFC), which is considered to have a very high performance in predicting ovarian response to FSH. The objective of the present study to elaborate a nomogram based on AFC for the calculation of the appropriate FSH starting dose in IVF cycles. METHODS: This is a retrospective study performed at the Mother-Infant Department of Modena University Hospital. IVF patients (n=505) were subjected to blood sampling and transvaginal ultrasound for measurement of serum day3 FSH, estradiol and AFC. The variables predictive of the number of retrieved oocytes were assessed by backwards stepwise multiple regression. The variables reaching the statistical significance were then used in the calculation for the final predictive model. RESULTS: A model based on age, AFC and FSH was able to accurately predict the ovarian sensitivity and accounted for 30% of the variability of ovarian response to FSH. An FSH dosage nomogram was constructed and overall it predicts a starting dose lower than 225 IU in 50.2% and 18.1% of patients younger and older than 35 years, respectively. CONCLUSIONS: The daily FSH dose may be calculated on the basis of age and two markers of ovarian reserve, namely AFC and FSH, with the last two variables being the most significant predictors. The nomogram seems easily applicable during the daily clinical practice.

9.
Arch Gynecol Obstet ; 285(5): 1479-82, 2012 May.
Artigo em Inglês | MEDLINE | ID: mdl-22198846

RESUMO

PURPOSE: Nitric oxide (NO) intrauterine production has been shown to have an important role in the reproductive system in females. The objective of the present study was to evaluate NO concentration in endometrial washing throughout the menstrual cycle. METHODS: Observational study at Institute of Obstetrics and Gynecology, Mother-Infant Department, University Hospital. The study included 40 healthy fertile women, aged 21-40, with regular menstrual cycle, undergoing endometrial washing by hydrosonography for the assessment of NO concentration. RESULTS: Nitric oxide concentration in endometrial washing were low in early to mid proliferative phase (4.73 ± 1.57 mcM/L), but significantly higher (p < 0.05) in late proliferative phase (7.30 ± 3.37 mcM/L) early secretory phase (8.05 ± 1.97 mcM/L) and late secretory phase (8.69 ± 4.12 mcM/L) of menstrual cycle. CONCLUSIONS: Endometrial washing by hydrosonography is a simple, minimally invasive, and effective tool to use in the evaluation of cyclical NO intrauterine production. Nitric oxide concentrations increased during the late proliferative and secretory phase of menstrual cycle.


Assuntos
Endométrio/metabolismo , Ciclo Menstrual/metabolismo , Óxido Nítrico/metabolismo , Adulto , Feminino , Humanos , Valores de Referência , Adulto Jovem
10.
Fertil Steril ; 95(2): 803.e7-8, 2011 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-20850725

RESUMO

OBJECTIVE: To present a case of a poor responder woman with a rare balanced autosomal translocation. DESIGN: Case report. SETTING: Infertility center in a university teaching hospital. PATIENT(S): A 34-year-old white woman with primary infertility. INTERVENTION(S): Laboratory and ultrasound evaluation, karyotype analysis, ovarian stimulation with gonadotropins. MAIN OUTCOME MEASURE(S): Markers of ovarian reserve and ovarian response to gonadotropin stimulation. RESULT(S): The patient was a carrier of a balanced translocation (1;11) (q23;p11.2). The hormone ovarian reserve markers (FSH, anti-Mullerian hormone, inhibin B) were within the normal range. The antral follicle count (AFC) was measured twice and only in one occasion did it reach the lower limit of the normal range. Furthermore, the patient had regular menstrual cycles. However, ovarian response to the administration of a maximal dose FSH was extremely poor. CONCLUSION(S): Patients with balanced autosomal translocations should be counseled regarding their increased risk for poor response even if markers of ovarian reserve are in the range of normality.


Assuntos
Biomarcadores/análise , Cromossomos Humanos Par 11 , Cromossomos Humanos Par 1 , Infertilidade Feminina/sangue , Infertilidade Feminina/diagnóstico por imagem , Ovário/fisiologia , Translocação Genética , Adulto , Biomarcadores/sangue , Contagem de Células , Feminino , Hormônios/análise , Hormônios/sangue , Humanos , Infertilidade Feminina/genética , Infertilidade Feminina/patologia , Ovário/diagnóstico por imagem , Ovário/patologia , Ultrassonografia
11.
Fertil Steril ; 95(2): 684-8, 2011 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-20797717

RESUMO

OBJECTIVE: To investigate the relationship between antral follicle count (AFC) and chronological age and to establish normal values for AFC in women with regular menstrual cycles. DESIGN: Cross-sectional study. SETTING: University hospital. PATIENT(S): Four hundred fifteen premenopausal women were recruited for the study. Data from 362 patients were available for the statistical analysis. INTERVENTION(S): AFC was measured by transvaginal ultrasound examination. MAIN OUTCOME MEASURE(S): Estimating the relationship between AFC and age and developing the AFC nomogram. RESULT(S): The analysis showed a linear decline in AFC with age; for every year increase in age, the median AFC decreases by 0.4. The AFC corresponding to the 5th, 25th, 50th, 75th, and 95th centiles for each age have been calculated. CONCLUSION(S): A linear relationship of AFC to age was found. For the first time, a nomogram reporting normal and interquartile values for AFC, age by age, throughout the reproductive period has been provided. Until now, the interpretation of the measurement was mainly based on the individual experience of the operator, because no normative data were present. Therefore, the establishment of a nomogram of AFC values is the first step to counsel patients on a scientific basis.


Assuntos
Envelhecimento/fisiologia , Nomogramas , Folículo Ovariano/citologia , Reprodução/fisiologia , Adulto , Fatores Etários , Contagem de Células/normas , Estudos Transversais , Técnicas de Diagnóstico Obstétrico e Ginecológico/normas , Regulação para Baixo , Feminino , Saúde , Humanos , Pessoa de Meia-Idade , Folículo Ovariano/diagnóstico por imagem , Valores de Referência , Ultrassonografia , Adulto Jovem
12.
Fertil Steril ; 93(6): 1859-63, 2010 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-19152877

RESUMO

OBJECTIVE: To compare the outcome of two different culture media marketed by the MediCult AS Company (Jyllinge, Denmark)-Universal IVF Medium and ISM1 Medium culture-which, in addition to glucose, pyruvate, and energy-providing components, also contain amino acids, nucleotides, vitamins, and cholesterol. DESIGN: Laboratory and retrospective clinical study. SETTING: University teaching hospital. PATIENT(S): A total of 726 patients, undergoing IVF-intracytoplasmic sperm injection procedure, comparable in mean age range, oocyte retrieval, and infertility indication, were included in the study. Laboratory quality and standard procedures were maintained unaffected. INTERVENTION(S): Oocyte retrieval, different embryo culture media. MAIN OUTCOME MEASURE(S): Embryo quality, ongoing pregnancy, and implantation rate. RESULT(S): The frequency of good-quality embryos (79% vs. 74%) and the percentages of ongoing pregnancy (27.5% vs. 18%) and implantation rate (15% vs. 10%) were significantly higher in the group treated with ISM1 Medium rather than Universal IVF Medium. CONCLUSION(S): ISM1 Medium culture seems to improve the performance of embryonic growth and development, as well as increasing the percentage of pregnancy.


Assuntos
Blastocisto/efeitos dos fármacos , Meios de Cultura/farmacologia , Implantação do Embrião/efeitos dos fármacos , Fertilização In Vitro/métodos , Taxa de Gravidez , Injeções de Esperma Intracitoplásmicas/métodos , Adulto , Blastocisto/citologia , Separação Celular , Técnicas de Cultura Embrionária , Implantação do Embrião/fisiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Gravidez , Controle de Qualidade , Estudos Retrospectivos , Espermatozoides/citologia , Adulto Jovem
13.
Contraception ; 80(1): 34-9, 2009 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-19501213

RESUMO

BACKGROUND: The study was conducted to investigate whether hormonal contraceptives administered via the oral and vaginal route exert a similar effect on insulin sensitivity (SI). STUDY DESIGN: This is a prospective, randomized study performed in the University Hospital. Subjects were healthy lean young women, needing a hormonal contraceptive, randomly allocated to receive for 6 months (a) an oral contraceptive (OC) containing 30 mcg ethinylestradiol (EE)/150 mcg desogestrel (DSG) (high-estrogen group; n=12), (b) an OC containing 20 mcg EE/150 mcg DSG (low-estrogen group; n=12) and (c) a vaginal ring contraceptive releasing, per day, 15 mcg EE/120 mcg etonorgestrel, the active DSG metabolite (n=12). SI and glucose utilization independent of insulin (Sg) were evaluated by the minimal model method. Modifications of total, high-density lipoprotein (HDL) and low-density lipoprotein cholesterol and triglycerides were also evaluated. RESULTS: Sg did not vary with any treatment. SI decreased during OCs (5.74+/-0.49 vs. 3.86+/-0.44; p=.0005), independently of the high/low-estrogen dose. SI did not decrease during vaginal ring use (4.64+/-1.03 vs. 5.25+/-1.36; p=.57; p=.019 vs. oral). Total cholesterol and HDL cholesterol increased (p=.02) during OCs, independently of the dose. Triglycerides increased during both oral (p=.01) and vaginal (p=.032) contraceptive use. CONCLUSIONS: The present data indicate that in contrast to OC use, vaginal contraception with the ring does not deteriorate SI. The vaginal ring may represent an appropriate choice for long-term contraception in women at risk for developing diabetes mellitus or metabolic syndrome.


Assuntos
Anticoncepcionais Orais Sintéticos/administração & dosagem , Desogestrel/administração & dosagem , Estrogênios/administração & dosagem , Etinilestradiol/administração & dosagem , Hiperinsulinismo/induzido quimicamente , Administração Intravaginal , Administração Oral , Adolescente , Adulto , Anticoncepcionais Orais Sintéticos/efeitos adversos , Desogestrel/efeitos adversos , Estrogênios/efeitos adversos , Etinilestradiol/efeitos adversos , Feminino , Humanos , Estudos Prospectivos , Adulto Jovem
14.
Contraception ; 79(2): 111-6, 2009 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-19135567

RESUMO

BACKGROUND: Second-generation and third-generation oral contraceptives containing 30 mcg or more of ethinylestradiol (EE) decrease insulin sensitivity (SI). In this study, we investigated whether SI is decreased by contraceptives containing lower doses EE or by progestins with antiandrogenic properties. STUDY DESIGN: Twenty-eight young healthy women were randomly allocated to receive 20 mcg of EE and 150 mcg of desogestrel (DSG) (n=14) or 30 mcg of EE and 2 mg of chlormadinone acetate (CMA) (n=14) for 6 months. SI and glucose utilization independent of insulin (Sg) were investigated by the minimal model method. Lipid modifications were also analyzed. RESULTS: SI decreased with EE/DSG (7.09+/-1.4 vs. 4.30+/-0.91; p=.04; n=12), but not with EE/CMA (5.79+/-0.93 vs. 6.79+/-1.1; p=.48; n=12). SI modifications observed in the two groups were significantly different (-2.79+/-1.15 vs. 1.0+/-1.38; p=.05). Sg did not vary with either treatment. The response of C-peptide to glucose increased, but significantly so only with EE/CMA (p=.01). The C-peptide/insulin response increased with both EE/DSG (p=.05) and EE/CMA (p=.04). High-density lipoprotein (HDL) cholesterol (p=.02) and triglycerides (p=.02 and p=.01) increased in both groups, but HDL/low-density lipoprotein cholesterol (p=.02), apoprotein A1 (Apo-A1) (p=.04) and Apo-A1/apoprotein B (p=.048) increased significantly only with EE/CMA. CONCLUSIONS: The present study confirms that DSG, even when associated with low EE dose, decreases SI. By contrast, EE/CMA does not deteriorate SI and induces a favorable lipid profile.


Assuntos
Acetato de Clormadinona/farmacologia , Anticoncepcionais Orais Combinados/farmacologia , Desogestrel/farmacologia , Etinilestradiol/farmacologia , Resistência à Insulina/fisiologia , Metabolismo dos Lipídeos/efeitos dos fármacos , Adolescente , Adulto , Glicemia/metabolismo , Peptídeo C/sangue , Feminino , Hormônio Foliculoestimulante/sangue , Teste de Tolerância a Glucose , Humanos , Insulina/sangue , Testes de Função Hepática , Hormônio Luteinizante/sangue , Adulto Jovem
15.
Contraception ; 77(5): 328-32, 2008 May.
Artigo em Inglês | MEDLINE | ID: mdl-18402847

RESUMO

BACKGROUND: This study was conducted to evaluate the effects of levonorgestrel administration for emergency contraception (EC) on bleeding pattern and pituitary-ovarian function. STUDY DESIGN: In 69 women with a reported stable menstrual cycle length of 24-34 days, we investigated bleeding patterns following EC administration in the follicular (n=26), periovulatory (n=14) and luteal (n=29) phase. In a subgroup of 8 women, hormonal evaluation and ultrasonography were performed. RESULTS: EC taken in the follicular, but not in the periovulatory or luteal phase, significantly shortened cycle length by 10.9+/-1 days. The subsequent cycle was not affected. EC taken in the late preovulatory phase, prior to the gonadotrophin surge, suppressed ovulation (n=7), while ovulation was not blocked when EC was given during an ongoing luteinizing hormone (LH) pulse (n=1). CONCLUSIONS: Our data indicate that EC given before the onset of the luteinizing hormone (LH) surge inhibits ovulation and hastens the end of the current menstrual cycle. Subsequently, the length of the following menstrual cycle returned as prior to treatment. By contrast, levonorgestrel administered after the expected ovulation has no effect on menstrual cycle length.


Assuntos
Anticoncepcionais Sintéticos Pós-Coito/administração & dosagem , Levanogestrel/administração & dosagem , Ciclo Menstrual/efeitos dos fármacos , Ovário/efeitos dos fármacos , Hipófise/efeitos dos fármacos , Adolescente , Adulto , Anticoncepção Pós-Coito , Estradiol/sangue , Feminino , Hormônio Foliculoestimulante/sangue , Fase Folicular/efeitos dos fármacos , Humanos , Fase Luteal/efeitos dos fármacos , Hormônio Luteinizante/sangue , Ciclo Menstrual/sangue , Ovário/metabolismo , Ovulação/efeitos dos fármacos , Hipófise/metabolismo , Progesterona/sangue
16.
Contraception ; 73(4): 348-51, 2006 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-16531164

RESUMO

PURPOSE: This study was conducted to evaluate the effects of two different oral contraceptives (OCs) on homocysteine (Hcy) metabolism in 20 women with polycystic ovary syndrome (PCOS). METHODS: Women were randomly allocated to receive either the biphasic OC containing 40/30 mug ethynylestradiol (EE)+25/125 mug desogestrel (DSG; n=10) or the monophasic OC containing 35 mug EE and 2 mg cyproterone acetate (CPA; n=10). Investigations were performed before and after 6 months of treatment. Fasting vitamin B(12), folate, Hcy and insulin sensitivity (SI), and glucose utilization independent of insulin (Sg), by the minimal model method, were evaluated. RESULTS: Folate and vitamin B(12) were not significantly modified by either OC. EE/DSG decreased SI (2.53+/-0.35 vs. 1.68+/-0.45; p<.05), without modifying Hcy (9.54+/-0.7 micromol/L vs. 9.18+/-0.6 micromol/L). EE/CPA improved SI (1.47+/-0.38 vs. 3.27+/-0.48; p<.04) and decreased Hcy (9.8+/-1.9 micromol/L vs. 7.9+/-0.9 micromol/L; p<.05). This study indicates that in women with PCOS, EE/CPA, but not EE/DSG, improves IS and decreases fasting Hcy.


Assuntos
Anticoncepcionais Orais/administração & dosagem , Acetato de Ciproterona/administração & dosagem , Desogestrel/administração & dosagem , Etinilestradiol/administração & dosagem , Homocisteína/sangue , Síndrome do Ovário Policístico/sangue , Adulto , Glicemia/análise , Feminino , Ácido Fólico/sangue , Humanos , Insulina/sangue , Resistência à Insulina , Vitamina B 12/sangue
17.
Contraception ; 72(6): 443-6, 2005 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-16307968

RESUMO

OBJECTIVES: To evaluate the influence of two medical treatments for endometriosis on insulin sensitivity. STUDY DESIGN: After surgery, 26 women with endometriosis were randomly allocated to a 6-month treatment with a GnRH agonist (Leuprorelin 3.75 mg/28 days) or a subdermal progestin implant (etonogestrel 68 mg). Insulin sensitivity (SI) and glucose utilization independent of insulin (Sg) were investigated at baseline and after 6 months by a frequently sampled intravenous glucose tolerance test (FSIGT) associated with the minimal model method. RESULTS: Both therapies tended to decrease SI, but the effect did not reach statistical significance in the GnRH agonist group (5.43+/-1.29 vs. 3.99+/-0.8) and was significant in the etonogestrel group (5.74+/-1.12 vs. 3.95+/-0,78; p=.046). Sg, fasting glucose, insulin, C-peptide and C-peptide/insulin were not modified by either treatment. CONCLUSIONS: The modifications of glucose-insulin metabolism induced by the GnRH agonist are of no relevance for the short-term use of this molecule. Even if the modification induced by the etonogestrel implant is subtle and of no major impact, it should be taken into consideration for the long-term treatment of individuals with abnormalities of glucose-insulin metabolism.


Assuntos
Desogestrel/efeitos adversos , Endometriose/tratamento farmacológico , Resistência à Insulina , Leuprolida/efeitos adversos , Glicemia/análise , Peptídeo C/sangue , Implantes de Medicamento , Endometriose/cirurgia , Jejum , Feminino , Teste de Tolerância a Glucose , Humanos , Insulina/sangue
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