SUMMARY OBJECTIVE: The aim of this study was to evaluate the factors that are most correlated with the levels of functional disability in patients with fibromyalgia. METHODS: This is a cross-sectional descriptive study in which 42 patients diagnosed with fibromyalgia according to the criteria of the American College of Rheumatology reported their status using the following questionnaires: the Beck Depression Inventory, the Perceived Stress Scale 14, the Revised Fibromyalgia Impact Questionnaire, the Visual Analog Pain Scale, and the Health Assessment Questionnaire. RESULTS: Moderate to severe levels of depression (Beck Depression Inventory: 22.35±10.39), moderate to severe functional disability (Health Assessment Questionnaire: 1.28±0.58), and high levels of stress (Perceived Stress Scale 14: 31.59±10.02) were found. The correlation adjusted by multiple regression as a function of the Health Assessment Questionnaire indicated a negligible to weak positive correlation with perceived stress (r=0.11), while a moderately strong positive correlation was observed with the Visual Analog Pain Scale (r=0.55). Regarding physical exercise, one of the pillars of the treatment, a moderate negative correlation was found with the Health Assessment Questionnaire (r=-0.4). CONCLUSION: The pain levels were moderately influenced by depression severity. The factors most linked to functional disability are due to the pain levels but not to the perception of stress.

Resumo Objetivo Analisar a influência do selênio na fertilidade feminina. Fonte dos dadosUma busca foi realizada nas seguintes bases de dados: MEDLINE, Web of Science, Scopus, SciELO, LILACS, MDPI, ScienceDirect e Europe PMC. Os descritores selecionados foram “selenium” AND “female” AND “fertility”. O intervalo de busca foi de 1996 a 2021. Seleção dos estudosA avaliação ocorreu de maneira independente por dois revisores, sendo que um terceiro corroborou a eleição dos artigos em casos de divergência. Os estudos foram selecionados através da leitura do título e resumo, e aqueles que contemplaram os critérios de elegibilidade foram lidos na íntegra. Coleta dos dadosOs seguintes dados foram extraídos: autor, ano de publicação, país, tipo de estudo, objetivo, método, tamanho da amostra, tempo de acompanhamento, média de idade das pacientes, critérios de inclusão e exclusão, concentração de selênio sérico e capilar. Os dados foram organizados em ordem cronológica de publicação do estudo. Síntese dos dadosForam identificados 3.800 artigos e incluídos 7 estudos na revisão sistemática. Os resultados indicaram correlação positiva entre o nível de selênio sérico e a concentração de antioxidantes no fluido folicular; diminuição dos níveis de anticorpos antitireoidianos; produção de oócitos, e número de folículos. Conclusão A suplementação de selênio é promissora em mulheres com deficiência do micronutriente, a fim de promover melhora na eficiência reprodutiva e prevenir danos na gravidez. Salientou-se a necessidade de realização de mais estudos sobre o tema.

Abstract Objective To analyze the influence of selenium in female fertility. Data sourceA search was performed in the following databases: MEDLINE, Web of Science, Scopus, SciELO, LILACS, MDPI, ScienceDirect, and Europe PMC. The descriptors selected were “selenium” AND “female” AND “fertility”. The search interval was from 1996 to 2021. Study selectionThe evaluation was performed independently by two reviewers, and a third reviewer confirmed the inclusion of papers in case of divergence between the first two reviewers. Papers were selected after the title and abstract were read, and those that met the eligibility criteria had the full text read. Data collectionThe following data was extracted: author, year of publication, country, type of study, objective, method, sample size, follow-up period, patients' mean age, inclusion and exclusion criteria, and concentration of serum and capillary selenium. The data was organized in chronological order of paper publication. Data synthesisThe number of papers identified totaled 3,800, out of which 7 were included in the systematic review. The studies indicated a positive correlation between serum selenium and antioxidant concentration in the follicular fluid, reduction in antithyroid antibodies, oocyte production and follicle number. Conclusion Selenium supplementation is promising in women with this micronutrient deficiency to promote improvement of the reproductive efficiency and prevent damage to the pregnancy. Further studies on this theme are still required.