Redox biomarkers in saliva and nuclear abnormalities in jugal epithelial cells of individuals with type 2 diabetes mellitus and periodontitis.

OBJECTIVE: To evaluate salivary redox biomarkers levels in individuals with periodontitis and type 2 diabetes mellitus (T2DM) and correlate with periodontal parameters and nuclear alterations in epithelial cells from jugal mucosa. DESIGN: Sixty individuals were categorized into three groups: T2DM with periodontitis (DM, n = 20), non-T2DM with periodontitis (PE, n = 20), and non-T2DM with periodontal health (HC, n = 20). All participants underwent fasting blood glucose and glycated hemoglobin measurements. After a periodontal examination, samples of epithelial cells from the jugal mucosa and saliva were collected. DNA damage was assessed by counting nuclear abnormalities using cytological analysis. Biomarkers of oxidative stress were determined through biochemical methods. Significant differences among groups were assessed using Kruskal-Wallis, Mann-Whitney, and Chi-square tests at a 5% significance level. Data were analyzed using Spearman's correlation coefficient, linear regression, and logistic regression. RESULTS: Frequencies of nuclear abnormalities, as well as levels of reduced glutathione and uric acid, were significantly higher in the DM group compared to the PE and HC groups (p < 0.05). Fasting glucose, glycated hemoglobin, nuclear abnormalities, reduced glutathione, and uric acid exhibited positive correlations with periodontal parameters (p < 0.05). Furthermore, reduced glutathione was associated with dental biofilm (OR = 1.027 [95% CI, 1.004-1.049]) and condensed chromatin (OR = 0.415 [95% CI, 0.196-0.878]). CONCLUSIONS: Periodontitis and T2DM are correlated with nuclear abnormalities, as well as salivary reduced glutathione and uric acid levels. Moreover, a higher prevalence of teeth with dental biofilm increases the likelihood of elevated levels of reduced glutathione in saliva, while the presence of condensed chromatin decreases that likelihood.

Is there a difference in the oxidative stress levels between type 2 diabetic individuals with and without periodontitis? Systematic review / Existe diferença nos níveis de estresse oxidativo entre indivíduos com diabetes tipo 2 com e sem periodontite? Revisão Sistemática

Objective: The authors' aim in this systematic review was to verify the scientific evidence for difference of oxidative stress biomarkers in individuals with type 2 diabetes mellitus with and without periodontitis. Material and Methods: Observational studies, baseline data of prospective and interventional studies were searched on the following databases: Virtual Health Library, Web of Science, PubMed, Embase, Scopus, Cochrane Library, Opengrey and Google Scholar. The electronic search was performed in June 01, 2020 until May 17, 2024 with alerts until June 01, 2024. The quality assessment and the certainty of the evidence of the included studies were evaluated through Fowkes and Fulton's checklist and GRADEpro Guideline Development Tool. Results: Of 988 relevant articles, the authors included 9 studies for the final analysis. Among those studies, 4 cross-sectional, 3 case-control, and 2 interventional studies were included. The analysis of non-randomized clinical trials properly reported most of the criteria analyzed in Summary questions (Bias, Confounding and Chance) as present in 3 studies. In six studies confounding factors were no detected. Due to the variation in the study results and clinical/methodological heterogeneity, a meta-analysis was not appropriate. The studies reported high concentrations of oxidizing agents and low antioxidants levels in individuals with type 2 diabetes mellitus and periodontitis when compared to with no periodontitis. Conclusion: Considering the few studies found, the methodological flaws, few markers studied and absence homogeneity in the evaluation of redox balance markers, as well as, the very low certainty of the evidence among included studies, it was not possible to determine whether there are or not differences in the oxidative stress levels in individuals with type 2 diabetes with and without periodontitis, and therefore, further prospective observational and interventional studies are recommended. (AU)

Objetivo: O objetivo dos autores nesta revisão sistemática foi verificar a evidência científica para a diferença de biomarcadores de estresse oxidativo em indivíduos com diabetes mellitus tipo 2 com e sem periodontite. Material e Métodos: estudos observacionais, dados de base de estudos prospectivos e intervencionistas foram pesquisados nas seguintes bases de dados: Biblioteca Virtual em Saúde, Web of Science, PubMed, Embase, Scopus, Cochrane Library, Opengrey e Google Scholar. A busca eletrônica foi realizada no período de 01 de junho de 2020 até 17 de maio de 2024, com alertas até 01 de junho de 2024. A avaliação da qualidade e a certeza da evidência dos estudos incluídos foi realizada através da lista de checagem Fowkes and Fulton's e da Ferramenta de desenvolvimento de diretrizes GRADEpro. Resultados: Dos 988 artigos relevantes, os autores incluíram 9 estudos para a análise final. Entre esses estudos, foram incluídos 4 estudos transversais, 3 de caso-controle e 2 de intervenção. A análise dos ensaios clínicos não randomizados relatou adequadamente a maioria dos critérios analisados nas questões resumo (Viés, Confundimento e Resultados ao caso) presentes em 3 estudos. Fatores de confusão não foram detectados em seis estudos. Devido à variação nos resultados do estudo e à heterogeneidade clínica/metodológica, não foi possível realizar uma meta-análise. Os estudos relataram altas concentrações de agentes oxidantes e baixos níveis de antioxidantes em indivíduos com diabetes mellitus tipo 2 e periodontite quando comparados a indivíduos sem periodontite. Conclusão: Considerando os poucos estudos encontrados, as falhas metodológicas, poucos marcadores estudados e ausência de homogeneidade na avaliação dos marcadores do balanço redox, bem como a baixíssima certeza da evidência entre os estudos incluídos, não foi possível determinar se há diferenças nos níveis de estresse oxidativo em indivíduos com diabetes tipo 2 associado e não à periodontite e, portanto, outras observações prospectivas e estudos de intervenção são recomendados (AU)

Fatores associados à presença de Candida spp. em amostras de fluido vaginal de mulheres residentes em comunidades quilombolas / Factors associated with the presence of Candida spp. in vaginal fluid samples from women living in quilombola settlements

RESUMO: Objetivo: Investigar a frequência e fatores associados à detecção de Candida spp. em fluido vaginal de mulheres residentes em uma comunidade quilombola. Materiais e Método: Um estudo transversal foi conduzido com 177 mulheres residentes em uma comunidade quilombola no Nordeste do Brasil. Foram coletados dados sociodemográficos, hábitos de vida, saúde geral e saúde reprodutiva. O material coletado na região do colo do útero foi submetido a exame citopatológico. Amostras de fluido vaginal foram coletadas para a análise microbiológica. Os testes Qui-quadrado, exato de Fisher e modelos de Re-gressão Logística foram utilizados na análise estatística. Resultados: Foi detectado Candida spp. em 28,9% das amostras. A espécie mais frequente nos casos positivos foi a Candida albicans (49%), seguida da Candida krusei (39,2%). Após o ajustamento, observou-se que mulheres com idade igual ou maior que 50 anos apresentaram maior chance da detecção de Candida spp. no fluido vaginal (OR ajustada = 3,46; IC95% = 1,68-7,12), enquanto as mulheres com queixa de corrimento vaginal apresentaram uma chance menor de detecção de Candida spp. (OR ajustada = 0,29; IC95% = 0,11-0,78). Conclusão: Os achados sugerem uma elevada detecção de Candida spp. no fluido vaginal entre mulheres residentes em comunidades quilombolas, o que sinaliza a necessidade do planejamento de medidas para prevenção e rastreamento de caso de candidíase vulvovaginal neste grupo populacional. Além disso, a presença de Candida spp. foi mais elevada em mulheres a partir da quinta década de vida, menor nas mulheres com queixas de corrimento vaginal. (AU)

ABSTRACT: Objective: Investigate the frequency and factors associated with the detection of Candida spp. in vaginal fluid from women living in a quilombola settlement. Materials and Method: A cross-sectional study was conducted with 177 women living in a quilombola settlement in Northeast, Brazil. Socio-demographic data, living habits, general health, and reproductive health were collected. The material collected in the region of the cervix was submitted to cytopathological examination. Vaginal fluid samples were collected for microbiological analysis. Chi-square test, exact Fisher's test, and logistic regression models were used for the statistical analysis. Results: Candida spp. was detected in 28.9% of the samples. The most frequent species in positive cases were Candida albicans (49%), followed by Candida krusei (39.2%). After adjustment, it was observed that women aged over 50 years had a higher chance of detecting Candida spp. in vaginal fluid (OR adjusted = 3.46; 95% CI = 1.68-7.12), while women complaining of vaginal discharge had a lower chance of detecting Candida spp. (OR adjust-ed = 0.29; 95% 95% CI= 0.11-0.78). Conclusion: The findings suggest a high detection of Candida spp. in vaginal fluid among women living in quilombola settlements, which indicates the need for planning measures for prevention and track the cases of vulvovaginal candidiasis in this population group. Besides, the presence of Candida spp. was higher in women from the fifth decade of life, lower in women with complaints of vaginal discharge. (AU)

Relationship between microcephaly and Zika virus during pregnancy: a review.

AIM: the present study analysed the association between Zika-virus and microcephaly during the gestational period of women in Brazil. METHODOLOGY: Systematic reviews of intervention research, current publications of clinical investigations were used systematic search strategies in three electronic databases PubMed, SciELO and Google academic. The following keywords were used: Microcephaly, gestation, Zika-virus to perform the search, and 1020 articles were obtained after exclusion, 45 were left and 35 were eligible. The collection period was from 2004 to 2017. RESULTS: Epidemiological data suggest a temporal association between the quantitative increase and the Zika-virus epidemic, especially in Northeast Brazil. It is not consensual to measure the cephalic perimeter curve to be considered. CONCLUSION: Given this, the application of techniques to accurately diagnose the relationship between causes and effects in the pathogenesis of Zika virus infection in the central nervous system should be prioritized.

Relationship between microcephaly and Zika virus during pregnancy: a review

SUMMARY AIM: the present study analysed the association between Zika-virus and microcephaly during the gestational period of women in Brazil. Methodology: Systematic reviews of intervention research, current publications of clinical investigations were used systematic search strategies in three electronic databases PubMed, SciELO and Google academic. The following keywords were used: Microcephaly, gestation, Zika-virus to perform the search, and 1020 articles were obtained after exclusion, 45 were left and 35 were eligible. The collection period was from 2004 to 2017. Results: Epidemiological data suggest a temporal association between the quantitative increase and the Zika-virus epidemic, especially in Northeast Brazil. It is not consensual to measure the cephalic perimeter curve to be considered. Conclusion: Given this, the application of techniques to accurately diagnose the relationship between causes and effects in the pathogenesis of Zika virus infection in the central nervous system should be prioritized.

RESUMO OBJETIVO: O presente estudo analisou a associação entre Zika vírus e microcefalia durante o período gestacional de mulheres no Brasil. METODOLOGIA: Revisões sistemáticas de pesquisas de intervenção, publicações atuais de investigações clínicas. Foram utilizadas estratégias de buscas sistemáticas em três bases de dados eletrônicos: PubMed, SciELO e Google acadêmico. Utilizaram-se as palavras-chave microcefalia, gestação e Zika vírus para realizar a busca, sendo obtidos 1.020 artigos. Após a exclusão, restaram 45 e na elegibilidade, 35. O período da coleta foi de 2004 a 2017. Resultados: Os dados epidemiológicos preconizam uma associação temporal entre a ampliação do quantitativo e epidemia de Zika vírus, especialmente no Nordeste do Brasil. Não é consensual a mensuração da curva de perímetro cefálico a ser considerada. CONCLUSÃO: Visto isso, deve ser priorizada a aplicação de técnicas para diagnosticar com precisão as relações entre causas e efeitos na patogênese da infecção pelo Zika vírus no sistema nervoso central.