Maria da Conceição Rodrigues Gonçalves

Excess weight is a strong risk factor for the development of dysglycaemia. It has been suggested that changes in the metabolism microRNAs, small non-coding RNAs that regulate gene expression, could precede late glycaemic changes. Vitamin E in turn may exert important functions in methylation and gene expression processes. This study aimed to determine the effect of α-tocopherol on glycaemic variables and miR-9-1 and miR-9-3 promoter DNA methylation in overweight women. A randomized, double-blind, exploratory, placebo-controlled study was conducted in overweight and obese adult women (n = 44) who ingested synthetic vitamin E (all-rac-α-tocopherol), natural source vitamin E (RRR-rac-α-tocopherol) or placebo capsules and were followed up for a period of 8 weeks. Supplemented groups also received dietary guidance for an energy-restricted diet. An additional group that received no supplementation and did not follow an energy-restricted diet was also followed up. The intervention effect was evaluated by DNA methylation levels (quantitative real-time PCR assay) and anthropometric and biochemical variables (fasting plasma glucose, haemoglobin A1C, insulin, and vitamin E). Increased methylation levels of the miR-9-3 promoter region (P < 0.001) and reduced haemoglobin A1C (P < 0.05) were observed in the natural source vitamin E group after intervention. Increased fasting plasma glucose was observed in the synthetic vitamin E group, despite the significant reduction of anthropometric variables compared to the other groups. α-Tocopherol from natural sources increased methylation levels of the miR-9-3 promoter region and reduced haemoglobin A1C in overweight women following an energy-restricted diet. These results provide novel information about the influence of vitamin E on DNA methylation. ClinicalTrials.gov , NCT02922491 . Registered 4 October, 2016.

DNA methylation has been evidenced as a potential epigenetic mechanism related to various candidate genes to development of obesity. Therefore, the objective of this study was to evaluate the DNA methylation levels of the ADRB3 gene by body mass index (BMI) in a representative adult population, besides characterizing this population as to the lipid profile, oxidative stress and food intake. This was a cross-sectional population-based study, involving 262 adults aged 20–59 years, of both genders, representative of the East and West regions of the municipality of João Pessoa, Paraíba state, Brazil, in that were evaluated lifestyle variables and performed nutritional, biochemical evaluation and DNA methylation levels of the ADRB3 gene using high resolution melting method. The relationship between the study variables was performed using analyses of variance and multiple regression models. All results were obtained using the software R, 3.3.2. From the stratification of categories BMI, was observed a difference in the average variables values of age, waist-to-height ratio, waist-to-hip ratio, waist circumference, triglycerides and intake of trans fat, which occurred more frequently between the categories “eutrophic” and “obesity”. From the multiple regression analysis in the group of eutrophic adults, it was observed a negative relationship between methylation levels of the ADRB3 gene with serum levels of folic acid. However, no significant relation was observed among lipid profile, oxidative stress and food intake in individuals distributed in the three categories of BMI. A negative relationship was demonstrated between methylation levels of the ADRB3 gene in eutrophic adults individuals with serum levels of folic acid, as well as with the independent gender of BMI, however, was not observed relation with lipid profile, oxidative stress and variables of food intake. Regarding the absence of relationship with methylation levels of the ADRB3 gene in the categories of overweight, mild and moderate obesity, the answer probably lies in the insufficient amount of body fat to initiate inflammatory processes and oxidative stress with a direct impact on methylation levels, what is differently is found most of the times in exacerbated levels in severe obesity.

Objective: In Brazil, demographic, socioeconomic and epidemiological changes over time have led to a transition in nutritional standards, resulting in a gradual reduction of malnutrition and an increased prevalence of overweight and obese individuals, similar to the situation in developed countries in previous decades. This study assessed the body mass index (BMI) and the prevalence of an overweight status and obesity, adjusted for various factors, in a population in northeastern Brazil including all age groups. Methods: This is a cross-sectional population-based epidemiological study using single sampling procedure composed of levels. Given the heterogeneity of the variable “income” and the relationship between income, prevalence of diseases and nutrition, a stratified sampling on blocks in the first level was used. In this, city districts were classified by income into 10 strata, according to information obtained from IBGE. A systematic sampling was applied on randomly selected blocks in order to choose the residences that would be part of the sample (second level), including 1165 participants from all age groups. Results and Discussion: The prevalence of an overweight status or obesity was adjusted for demographic, socioeconomic and lifestyle variables. When the Chi-square test was applied, a relationship was observed between the prevalence of an overweight status or obesity and the age group, gender, educational level and income of the participants. Regarding lifestyle parameters, only smoking was associated with the prevalence of an overweight status or obesity, in both adults and in the total sample. The results for the following groups were significant (p < 0.05): the age group from 20 to 59 years, when the individual presented an educational level greater than or equal to high school; and the age group ≥ 60 years, when the individual was female. It is noteworthy that educational level and being female were significant in adjusting for the total population as major factors influencing an increased BMI, followed by the variables physical activity and family income. Conclusions: The adjusted results justify the adoption of intervention and prevention policies to combat these clinical conditions for the study population as a whole, particularly directed toward adults with higher education level as well as elderly females.

As transformações ocorridas na sociedade atual refletem diretamente em escolhas alimentares não saudáveis. Como consequência desse padrão alimentar, surgem o sobrepeso e a obesidade, e também doenças crônicas não transmissíveis. O Programa Nacional de Alimentação Escolar (o PNAE) configura uma importante estratégia do Governo Federal para o enfrentamento desse problema alimentar. Desde suas primeiras resoluções, busca-se cada vez mais cardápios saudáveis, regionalizados e adaptados à cultura local. A mais recente normativa do programa obriga estados e municípios a comprarem parte de seus alimentos de agricultores familiares rurais. Este estudo analisa reflexões dos agricultores familiares em relação à dinâmica de abastecimento dos produtos da agricultura familiar para a alimentação escolar. Trata-se de um estudo de caso, realizado segundo a técnica qualitativa por meio de entrevista semiestruturada no município de Araripe, Ceará. Foram entrevistados catorze agricultores familiares que fornecem gêneros alimentícios para escolas e identificadas duas categorias principais nos depoimentos: dificuldades e benefícios. Pode-se perceber que questões relacionadas ao pagamento, ao transporte e a estrutura física destacaram-se como os principais entraves para que essa prática fosse efetivada. Quanto aos benefícios, o mais recorrente foi a oportunidade de emprego que esse mercado trouxe. Os resultados indicam a necessidade de ações por parte da gestão local para reconhecer o potencial agrícola dessa região, além de estabelecer parcerias com outros órgãos, com vistas a melhorar a capacitação desses agricultores e subsidiá-los no atendimento às especificações legais do programa. Isso pode contribuir para o aumento da renda e da qualidade de vida entre as famílias rurais.

The aim of this study was to analyze the association between waist-to-height ratio (WHtR) and C-reactive protein (CRP) in the elderly (considering their most prevalent morbidities and lifestyles), to investigate the relationship between this anthropometric index and the presence of the most prevalent morbidities (isolated or combined), and to identify which morbidities (analyzed individually) would have greater associations with WHtR. This cross-sectional population-based epidemiological study of a stratified sampling comprised 170 elderly individuals between 60 and 90 years of age (both genders). Home visits were used to administer questionnaires and to perform anthropometric measurements and blood collection. The mean patient age was younger than 70 years, with women comprising the majority (69.41%) and with 90% of the patients presenting with inadequate WHtR. Hypertension was the most prevalent morbidity in this cohort (58.52%), and when analyzed in combination, hypertension plus obesity were the most frequently diagnosed morbidities (17.65%). Obesity, which was among the most prevalent comorbidities, was the only comorbidity combined with WHtR (p = 0.0019). Individuals with no morbidities had lower mean WHtR values compared with individuals with at least one morbidity (p = 0.0075). In the multiple linear regression model, it was identified that when individuals had one or more of the most prevalent comorbidities, the mean WHtR increased by 0.0415 (p = 0.0065). A correlation between WHtR and CRP (p = 0.0379) was also verified. Based on the relationships observed between WHtR (isolated or in combination, data unpublished) and CRP among the elderly, WHtR may represent a screening tool because it is a simple and effective anthropometric index.

CONCENTRADO DE MELANCIA (Citrullus vulgaris Schrad): ACEITAÇÃO SENSORIAL, PARÂMETROS MICROBIOLÓGICOS, FÍSICO-QUÍMICOS E DETERMINAÇÃO DE FITONUTRIENTES

Low calcium:phosphorus ratios (Ca:P ratio) in habitual diet have been observed worldwide, and it has been shown to be harmful to the bone health of the population. However, no study associating this ratio with obesity was found. Thus, considering that the intake of calcium and phosphorus will generate a ratio between them, which may be associated with obesity, this research seeks at evaluating the relation between obesity and the Ca:P ratio in the habitual diet of adults.

O trabalho tem como objetivo analisar os fatores sociais do cotidiano que mais influenciam no hábito alimentar do obeso. A pesquisa, de enfoque qualitativo, teve como participantes 11 indivíduos obesos que frequentavam o ambulatório de nutrição de um hospital público na cidade de João Pessoa, Paraíba, Brasil. Foram realizadas entrevistas semiestruturadas, gravadas para a análise de conteúdo. Observou-se que as categorias que se destacaram nos discursos foram: autoimagem negativa, discriminação, ansiedade e sentimento de culpa. Ao se tornarem obesos, os indivíduos do presente estudo parecem desenvolver uma autoimagem negativa, relacionada à ansiedade e à depressão, entre outros fatores, o que pode levar a um sentimento de culpa, reforçado pela discriminação da sociedade que, ao invés de ajudá-lo a perder peso, parece estimulá-lo a comer mais.

Evaluating the prevalence of chronic disease in a group of elderly people living in the city of João Pessoa, PB, Brazil and their nutritional status. 117 subjects aged 60 to 89 attending local Reference and Citizenship Centres were evaluated. The research instrument used was a questionnaire addressing socio-demographic, socioeconomic and anthropometric variables and health-related behaviour. The data so collected was organised using SPSS statistical software and presented via descriptive statistics (mean and standard deviation, and absolute and percentage frequencies). 4.3% and 9.4% of the subjects admitted using tobacco and alcohol, respectively. 56.4% did not engage in any physical activity. As many as 78.6% used medications and 82.1% admitted to suffering from some non-transmissible chronic disease, the most frequent being hypertension (56.4%), dyslipidaemia (33.3%) and diabetes mellitus (20.5%). According to body mass index (BMI) classification, 46.2% were overweight and 40.2% presented degree I obesity. Regarding the waist-to-hip ratio (WHR), abdominal obesity was diagnosed in 97.4% of the elderly in the study. The prevalence of chronic disease, especially hypertension, was high in the studied population. Most institutionalised elderly were classified as suffering from abdominal obesity, representing an extremely high risk of developing cardiovascular disease.