RESUMO
OBJECTIVE: Hypertensive disorders are among the main causes of maternal and perinatal morbidity and mortality, and the findings regarding the occurrence of preeclampsia (PE) and eclampsia (E) in adolescent pregnancy are conflicting. We performed a systematic review and meta-analysis aimed to determining the prevalence of PE and E in adolescent pregnancy considering socioeconomic and temporal characteristics. STUDY DESIGN: MEDLINE, EMBASE and SciELO databases, with no time span restrictions. Studies that reported the occurrence of PE and E in adolescent pregnancy. Study selection, data extraction and bias assessment were performed by three independent investigators. Meta-analysis techniques comprised random-effects model and double-arcsine transformation; χ1 and I2 tests were used to assess heterogeneity. Meta-regression used Hunter-Schmidt model; publication bias were assessed by funnel and Baujat plots. RESULTS: Seventy studies were included, ranging from 1969 to 2019 and comprising 30 countries and 291,247 adolescents. The overall prevalence rate of PE/E was 6.7 % (95 % CIâ¯=â¯5.8-7.6). Subgroup analysis revealed association of PE/E (Pâ¯=â¯0.050) and E (Pâ¯=â¯0.0113) with country income, and the highest prevalences were found in low-and medium-income country groups (11.5 %, 95 % CI=7.8-15.8 and 10.6 %, 95 % CI=6.05-16.2). Association of PE with publication year (Pâ¯=â¯0.0022) was also found with an observable reduction in prevalence rate across the years. CONCLUSIONS: The findings seem to confirm that socioeconomic and demographic characteristics play a role for the risk of PE/E in adolescent pregnancy. Although the occurrence of PE has declined worldwide, the problem has broader dimensions beyond health issues.
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Pré-Eclâmpsia/epidemiologia , Gravidez na Adolescência/estatística & dados numéricos , Adolescente , Feminino , Humanos , Gravidez , Prevalência , Fatores de Risco , Fatores SocioeconômicosRESUMO
INTRODUCTION: Endometriosis is defined as the presence of endometrial-like tissue outside the uterus, associated with chronic and inflammatory reaction. Symptoms range from dysmenorrhea, dyspareunia, chronic pelvic pain, unexplained infertility to asymptomatic. The patients' quality of life is affected by anxiety, depression and stress. We aimed to verify the prevalence and levels of psychological stress among women with endometriosis. EVIDENCE ACQUISITION: The systematic review followed the PRISMA statement and the MOOSE guideline. Databases searched were MEDLINE, EMBASE, PsychNET and SciELO. The risk of bias was assessed with a modified Newcastle-Ottawa Scale. The meta-analysis of proportions used inverse variance method for pooling and random-effects model. For the stress levels we used the restricted maximum likelihood estimator for summary effects. Heterogeneity was assessed through I2 and Q statistics. Publication bias was assessed through funnel plots. Meta-regression adopted a mixed-effects model, considering patient age, endometriosis staging, stress assessment tool and data collection as categorical moderators. EVIDENCE SYNTHESIS: We included 15 studies encompassing 4,619 women with endometriosis. The overall prevalence of mild/high stress was 68% (95%CI:57%-79%), I2=98% and τ2=0.0228. The mean level of stress was 41.78% (95%CI =34.05%-49.51%), I2=99.9% and τ2=83.35. Meta-regression showed relationship with endometriosis staging. CONCLUSIONS: This is the first meta-analysis exploring the association between endometriosis and psychological stress. The interdisciplinary management of the disease should expand the mental health support in this patient care, beyond pain management. Finally, the attitude of the medical team acknowledging the patients' psychological stress may positively affect their treatment.
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Endometriose/psicologia , Estresse Psicológico/etiologia , Feminino , Humanos , Estudos Observacionais como Assunto , Prevalência , Viés de Publicação , Qualidade de Vida , Estresse Psicológico/epidemiologiaRESUMO
Kisspeptin is involved in the control of human reproduction bridging the gap between the sex steroid levels and feedback mechanisms that control the gonadotropin releasing hormone (GnRH) secretion; however, studies considering this peptide and infertility are limited. We conducted a review and critical assessment of available evidence considering kisspeptin structure, physiology, function in puberty and reproduction, its role in assisted reproduction treatments, kisspeptin dosage and the impact on KISS1 and GPR54 genes. Literature searches were conducted in PubMed using keywords related to: (i) kisspeptin or receptors, kisspeptin-1 (ii) reproduction or infertility or fertility (iii) gene and (iv) dosage or measurement or quantification or serum level, in human. Kisspeptin is a product of KISS1 gene that binds to a G-protein-coupled receptor (GPR54/KISS1R) stimulating the release of GnRH by hypothalamic neurons, leading to secretion of pituitary gonadotropins (LH and FSH) and sexual steroids, which in turn will act in the gonads to produce the gametes. Kisspeptin is being recognized as a crucial regulator of the onset of puberty, the regulation of sex hormone mediated secretion of gonadotropins, and the control of fertility. Inactivating and activating mutations in both KISS1 or GPR54 genes were associated with hypogonadotropic hypogonadism and precocious puberty. Despite this, studies considering kisspeptin and infertility are scarce. The understanding of the role of kisspeptin may lead to its use as a biomarker in infertility treatments and use in controlled ovarian hyperstimulation.