Abstract: There is an increasing interest in the application of micronucleus (MN) assays in the clinical setting to investing the impact of environmental, genetic, life style and socioeconomic conditions on DNA. However, the evaluation of mutagenic damage among young population had not been studied and early intervention in this population can prevent several health comorbidities. Thus, the present study aimed in investigate the MN presence in young adults and its associated factors. This is a cross-sectional study, composed by 155 young adults (between 18 to < 30-year-old) of both sexes. The socioeconomic and life style data was collected through a semi-structured questionnaire. Oral exfoliated cells were collected to evaluate the frequency of MN cells. Socioeconomic conditions and life style factors were not associated with the presence of MN. Twenty percent of the participants reported some chronic noncommunicable disease and almost twelve percent reports continued use of medication, both variables present a risk factor to prevalence of MN. Although mutagenesis is a process generally more related to older individuals, this study highlights the importance of monitored DNA damage between young adults and promote healthy habits to prevent the development and worse prognosis of chronic non-transmissible diseases and the consequent use of drugs.

Resumen: Existe un interés creciente en la aplicación de ensayos de micronúcleos (MN) en el entorno clínico para invertir el impacto de las condiciones ambientales, genéticas, de estilo de vida y socioeconómicas en el ADN. Sin embargo, no se ha estudiado la evaluación del daño mutagénico en población joven y la intervención temprana en esta población puede prevenir varias comorbilidades de salud. Así, el presente estudio tuvo como objetivo investigar la presencia de MN en adultos jóvenes y sus factores asociados. Se trata de un estudio transversal, compuesto por 155 adultos jóvenes (entre 18 y <30 años) de ambos sexos. Los datos socioeconómicos y de estilo de vida se recopilaron mediante un cuestionario semiestructurado. Se recolectaron células exfoliadas orales para evaluar la frecuencia de células MN. Las condiciones socioeconómicas y los factores del estilo de vida no se asociaron con la presencia de MN. El veinte por ciento de los participantes reportó alguna enfermedad crónica no transmisible y casi doce por ciento reportaron uso continuado de medicación, ambas variables presentan un factor de riesgo para la prevalencia de NM. Si bien la mutagénesis es un proceso generalmente más relacionado con las personas mayores, este estudio destaca la importancia de monitorear el daño del ADN entre los adultos jóvenes y promover hábitos saludables para prevenir el desarrollo y peor pronóstico de enfermedades crónicas no transmisibles y el consecuente uso de medicamentos.

Abstract This research aimed to conduct a systematic review and metanalysis to compare the frequency of cell damage in crack users and nonusers, through Micronucleous (MN) test in buccal mucosa cells. A comprehensive search was carried out on MEDLINE via PubMeb, Web of Science, LILACS and the grey literature without restrictions. It was included case-control studies that report the frequency of micronuclei in the oral mucosa of adult crack users and nonusers. A review protocol was registered with PROSPERO (CRD42018115672), and conducted in accordance with the PRISMA guidelines for the report of this systematic review. Furthermore, study quality was evaluated using an adapted Newcastle-Ottawa Scale for cross-sectional studies.The original search yielded 27 references, after eligibility criteriaonly five articles were included. The number of micronuclei was higher in crack users compared to nonusers. Also, secondary outcomes: binucleated cells, nuclear buds, pyknosis, karyorrhexis and karyolysis had higher prevalence in crack users.Crack use is associated with genotoxic and mutagenic effects because there is a higher frequency of micronuclei in exfoliated cells of crack users. In addition, MN test proved to be a goodbiomarker to assess the mutagenic impact of crack use in oral epithelium.

Resumen Esta investigación tuvo como objetivo realizar una revisión sistemática y un meta-análisis para comparar la frecuencia de daño celular en usuarios de crack y sin crack, a través de la prueba de micronúcleos (MN) en células de la mucosa bucal. Se realizó una búsqueda exhaustiva en MEDLINE a través de PubMeb, Web of Science, LILACS y la literatura gris sin restricciones. Se incluyeron estudios de casos y controles que informaron la frecuencia de micronúcleos en la mucosa oral de usuarios adultos de crack y sin crack. Se registró un protocolo de revisión con PROSPERO (CRD42018115672), y se realizó de acuerdo con las pautas de PRISMA para el informe de esta revisión sistemática. Además, la calidad del estudio se evaluó mediante una escala Newcastle-Ottawa adaptada para estudios transversales. La búsqueda original arrojó 27 referencias, después de los criterios de elegibilidad se incluyeron un total de cinco artículos. El número de micronúcleos fue mayor en los usuarios de crack en compa ración con los usuarios sin crack. Además, los resultados secundarios de células binucleadas, yemas nucleares, picnosis, cario- rrexis y cariólisis tuvieron una mayor prevalencia en los usuarios de crack. El uso de crack se asocia con efectos genotóxicos y mutagénicos porque hay una mayor frecuencia de micronúcleos en las células exfoliadas de los usuarios de crack. Además, la prueba de MN demostró ser un buen biomarcador para evaluar el impacto mutagénico del uso de crack en el epitelio oral.

Resumo Objetivos: avaliar a prevalência e identificar fatores associados ao consumo de álcool entre gestantes no município de Rio Grande, RS. Métodos: estudo transversal que incluiu todas as parturientes residentes neste município que tiveram filhos no ano de 2013. Foram caracterizados dois desfechos: consumo de bebida alcoólica durante a gestação; e, consumo excessivo. Na análise utilizouse teste quiquadrado para proporções, enquanto na multivariada, regressão de Poisson. Resultados: 9,4% (IC95%= 8,2 - 10,5) das 2685 parturientes estudadas referiram ter consumido bebida alcoólica durante a gestação, sendo cerveja a mais comum. Após ajuste, os fatores associados ao consumo de álcool na gestação foram: idade ≥30 anos, cor da pele parda, viver sem companheiro, baixa escolaridade, ser tabagista e usuária de drogas ilícitas, maior paridade e início tardio do prénatal. O consumo excessivo de álcool ocorreu para 12,7% (IC95%= 8,616,9) daquelas que referiram ter bebido na gestação, e os fatores significativamente associados a esta prática foram idade ≥30 anos, menor escolaridade e uso de drogas ilícitas. Conclusões: este estudo mostrou elevado consumo de álcool no período gestacional e identificou mulheres mais suscetíveis a esta prática. Evidenciase a necessidade de os profissionais de saúde atuarem na prevenção e no manejo do consumo de álcool entre gestantes neste município.

Abstract Objectives: to assess alcohol intake prevalence and identify associated factors among pregnant women in the municipality of Rio Grande, RS, Brazil. Methods: this was a crosssectional study which included all parturient women residing in the municipality who gave birth in 2013. Two outcomes were characterized: alcohol intake during pregnancy and excessive alcohol intake during pregnancy. In the analysis, proportions were tested using the Chisquare test, whilst Poisson regression was used in the multivariate analysis. Results: 9.4% (CI95%= 8.210.5) of the 2,685 parturient women studied reported having consumed alcohol during pregnancy, with beer being most common beverage. Following adjustment, the factors associated with alcohol intake in pregnancy were: age ≥30 years, brown skin colour, living without a partner, low schooling, tobacco smoking and illicit drug use, having had more children and late onset of prenatal care. Excessive alcohol intake was found in 12.7% (CI95%= 8.616.9) of those who reported drinking during pregnancy and the factors associated with this practice were age ≥30 years, lower schooling and illicit drug use. Conclusions: this study found high alcohol intake during the gestation period and identified women more susceptible to this practice. There is an evident need for health professionals to work on preventing and handling alcohol intake among pregnant women in the municipality