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Suboptimal selenium status may impair the antioxidant defense system in patients undergoing hemodialysis, compromising the selenoenzyme glutathione peroxidase activity. To evaluate the association between the duration of hemodialysis, nutritional selenium status, glutathione peroxidase activity (GPx), and thiobarbituric acid reactive substance (TBARS) levels in patients with chronic renal failure undergoing hemodialysis in a region of selenium-rich soils (Ceara, Northeast Brazil). The case-control study of 75 individuals aged 18 to 88 years was allocated between two groups: hemodialysis (n = 41) and control (n = 34). Plasma and erythrocytes selenium levels were determined by inductively coupled plasma optical emission spectrometry. The GPx activity and TBARS levels were also evaluated. In addition, the hemodialysis group was stratified according to the duration of treatment (≤ 59 months and ≥ 60 months). The Mann-Whitney test, Student's t test, and Pearson's or Spearman's correlation were applied according to the data distribution. Moreover, a quantile regression was performed. The significance level (p) was < 0.05. The hemodialysis group had lower selenium levels in their plasma and erythrocytes than the control group (p < 0.001). However, there was no difference in the GPx activity between the groups. Furthermore, an association between the hemodialysis group and selenium levels in plasma (coefficient - 16,343, p < 0.001) and erythrocytes (coefficient - 7839, p = 0.003) was observed by quantile regression, independent of age, sex, and body-mass index. In individuals who had undergone treatment for 60 months or more, GPx activity was lower (p = 0.026) and TBARS levels higher (p = 0.011) than in those who had undergone treatment for less than 60 months. The status of selenium was reduced in the hemodialysis group compared to the control group. The lower GPx activity and higher levels of TBARS in individuals who had undergone treatment for 60 months or more correlated with greater oxidative stress.

Studies of subcutaneous and visceral abdominal fat thickness evaluated by ultrasound as a predictor of gestational diabetes mellitus (GDM) have been published, but the best technique and standardization are unknown. To identify, critically evaluate, and analyze studies using subcutaneous and visceral abdominal fat as a model for predicting GDM in the first and second trimesters of pregnancy and evaluate their methodological quality.PubMed, Scopus, and Web of Science databases were searched from May to July 2019. We included studies of any sample size performed for any duration and in any configuration. Model development and validation studies were eligible for inclusion. Two authors independently performed the eligibility assessment of the studies by reviewing the titles and abstracts. Data on study design, gestational age, diagnostic criteria for GDM, device, ultrasound fat measurement technique, and cutoff point for GDM prediction were extracted.The electronic search resulted in 1331 articles, of which 14 were eligible for systematic review. Different criteria for diagnosing GDM and fat measurement techniques were used. The cutoff point for subcutaneous, visceral, and total abdominal fat for predicting GDM in the first and second trimesters varied between the studies.No study validated the model for predicting GDM using subcutaneous and visceral abdominal fat measurements. External validation studies are recommended to improve the generalization of this GDM predictor in clinical practice.

Objective: The aim of this study was to analyze the influence of liver transplantation in food intake and nutritional status of severe cirrhotic patients. Methods:The sample consisted of 23 patients who underwent liver transplantation. Three 24-hour dietary recall were applied and anthropometric measurements were collected before and three months after transplantation. The consumption of macronutrients and fat soluble vitamins were also evaluated. The anthropometric data evaluated were body mass index, abdominal circumference, percentage of adequacy of arm circumference, triceps skinfold thickness and arm muscle circumference. Related mean comparison tests, comparison of changes in the proportions of categorical variables and correlation of quantitative variables were used in the statistical analysis. Data were considered to be significant when p < 0.05. Results: Most patients were female and aged between 40 and 65 years. The average consumption of calories, proteins, lipids, cholesterol and monounsaturated fatty acids was significantly higher after liver transplantation (p < 0.05). The average of anthropometric parameters did not differ significantly between the evaluated times. There was no significant change in nutrient intake or anthropometric classification after transplantation. Most patients were classified as malnourished or overweight after transplantation, according to some anthropometric parameters. Conclusion: Food consumption changed after transplantation. There was no change in the nutritional status from pre- to post-transplant but, in general, most patients had altered nutritional status in both evaluation moments.

Background: Excess body weight is a risk factor for the development of diseases. Adolescence is a nutritionally vulnerable age group that suffers due to influences on food intake. We aimed to ident...

Selenium deficiency appears to limit antioxidant defense in obese individuals. This study evaluated the association between adiposity indices, selenium status, and oxidative stress in obese women.This was a cross-sectional study involving 139 women who were divided into the following two groups: the case group (obese women, n = 63) and the control group (normal-weight women, n = 76). Plasma, erythrocyte, and urinary selenium levels were determined using inductively coupled plasma optical emission spectrometry. Body weight, height, waist circumference, hip circumference and neck circumference were measured. Body mass index, waist/height ratio, conicity index, body fat index, body adiposity index, body circularity index, and visceral adiposity index were calculated. Plasma levels of thiobarbituric acid reactive substances were determined. The erythrocyte glutathione peroxidase activity was determined using an automatic biochemical analyzer and Ransel kit.Obese women had selenium deficiency characterized by reduction in plasma and erythrocyte concentrations (P.001). The urinary selenium excretion was higher in the case group compared to the control group (P.001). Adiposity indices values and plasma concentrations of thiobarbituric acid reactive substances were significantly elevated in obese women (P.001). There was a significant association between adiposity indices and selenium status (P.001), and between erythrocyte selenium and erythrocyte glutathione peroxidase activity (P.001).Obese women evaluated in the study have reduced plasma and erythrocyte concentrations of selenium and an increased urinary excretion of selenium. The correlation analysis reveals an association between intra-abdominal fat accumulation and selenium metabolism and oxidative stress.

Objective: To evaluate the selenium status and oxidative stress in male infertility cases selected from a private human reproduction center in the state of Ceará, Brazil. Methods: The present study had a cross-sectional quantitative approach, carried out between January and October 2013 at a Human Reproduction Center. The studied population was composed of 49 male individuals seen at the clinic, aged between 18 and 60 years. Blood samples were collected to measure serum selenium concentrations, erythrocyte activity and glutathione peroxidase. After medical diagnosis, the participants were divided into fertile and infertile groups. Blood samples were collected for establishing Se concentrations in plasma and erythrocytes, and measurements of the enzymatic activity of glutathione peroxidase in the erythrocytes. Result: it resulted in 53.1% of fertile men and 46.9% of infertile men. The average age of the fertile group was 34.1 years and the infertile group was 37.3 years. Regarding the assessment of nutritional status, the scatter diagram of the infertility group showed a higher body mass index and waist circumference, showing that this group has a higher risk of global and abdominal obesity compared to the fertile group (p

espanolObjetivo: el objetivo de este estudio fue investigar los efectos del extracto acuoso de Chrysobalanus icaco (AECI) en la adiposidad y su mecanismo de accion en la expresion genica y proteica de la acetil-CoA-carboxilasa (ACC), una enzima clave para la lipogenesis. Metodos: se usaron ratones macho Wistar que se asignaron a una dieta estandar de control (CG) o a una rica en grasa (HFD). La HFD se trato con solucion salina o con extracto acuoso de Chrysobalanus icaco (AECI) durante cuatro semanas. Se evaluaron el peso corporal y el consumo alimentario. Se aislaron y analizaron muestras de tejido adiposo subcutaneo, retroperitoneal y periepididimico. Se determino la expresion genica y proteica de ACC en el tejido subcutaneo. Resultados: el AECI no mostro ningun efecto sobre la ingesta de alimento y tampoco sobre el peso corporal. Sin embargo, el tratamiento con AECI redujo el peso de los tejidos adiposos y la expresion genica y proteica de ACC, y mejoro tambien la tolerancia a la glucosa. Conclusion: Chrysobalanus icaco (AECI) resulto ser beneficioso para el tratamiento de la obesidad, previniendo el almacenamiento de grasa y mejorando la homeostasis glucemica. EnglishObjective: the purpose of this study was to investigate the effects of Chrysobalanus icaco on adiposity and its mechanism of action in the gene and protein expression of acetyl-CoA carboxylase (ACC), a key enzyme in lipogenesis. Method: Wistar rats were divided into a regular or control group (CG) and a high-fat diet (HFD) group. HFD was treated with saline or aqueous extract of Chrysobalanus icaco (AECI) for four weeks. Body weight and food intake were assessed. Subcutaneous, retroperitoneal and periepididymal adipose tissue samples were collected and weighed. Adipocytes from periepididymal tissue were isolated and analyzed. The gene and protein expression of ACC in subcutaneous tissue was determined. Results: AECI showed no effect on intake or body weight. However, the weight of the fat pads and the gene and protein expression of ACC were lower, and glucose tolerance was improved. Conclusion: the aqueous extract of Chrysobalanus icaco proved beneficial for the treatment of obesity, preventing fat storage and improving glycemic homeostasis.

Vitamins are organic compounds essential for normal physiological functioning and they need to be provided in adequate amounts by the diet. They are nutrients mainly associated to fruit consumption, playing an important role in the cellular function, growth and development of individuals. The present study aimed to analyze levels of vitamins B, C and carotenoids of fruits from the agrobiodiversity of Northeastern Brazil, among them cajuí (Anacardium spp), murici (Byrsonima crassifolia (L.) Kunth), pequi (Caryocar coriaceum Wittm.), jenipapo (Genipa americana L.), mangaba (Hancornia speciosa Gomes), bacuri (Platonia insignis Mart.), cajá (Spondias mombin L.), umbu-cajá (Spondias bahiensis P. Carvalho, Van den Berg & M. Machado), umbu (Spondias tuberosa Arruda), pitanga (Eugenia uniflora L.), araçá (Psidium sobralianum Landrum & Proença). The vitamins were quantified using the analytical method High Performance Liquid Chromatography (HPLC). Vitamin B complex levels varied from 0.003 ± 0.01 mg/100 g to 6.107 ± 0.06 mg/100 g. Vitamin C ranged from 0.36 ± 0.06 mg/100 g to 253.92 ± 9.02 mg/100 g. Carotenoid values ranged from 0.12 ± 0.02 μg/100 g to 395.63 ± 113.69 μg/100 g. Thus, the profile of water-soluble vitamins and carotenoids of the fruits analyzed was quantified. Therefore, these fruits can provide varied amounts of vitamins important to human health. However, it is interesting for the individual to consume fruits in a diversified manner, avoiding monotony and thus guaranteeing the daily intake of more nutrients., Food science; Food analysis; Provitamin A; Vitamin C; Vitamin B complex; Brazil; High Performance Liquid Chromatography; Principal component analysis.

This study aims at analyzing the association between the Dietary Inflammatory Index (DII) and the clinical condition of multiple sclerosis (MS) patients. It is a quantitative, cross-sectional analytical study that included 137 MS patients assisted at a reference center for MS treatment in the Brazilian northeast. Data was collated through a structured questionnaire and medical records consultation, also involving demographic, clinical, and nutritional variables. Clinical variables included the MS type, diagnosis and follow-up start dates, investigation of recent urinary tract symptoms, use of immunomodulatory, vitamin D supplementation, number of recent pulse therapies, relapse rate in the last 2 years, muscular strength assessment (MRC), disability degree (EDSS), and a gadolinium-enhanced magnetic resonance imaging (MRI) scan in the central white matter (CWM). The DII was calculated according to the Shivappa et al. methodology. There was no difference in any of the variables according to the DII (p > 0.05). The Dietary Inflammatory Index did not affect the clinical condition of individuals with multiple sclerosis.

The aim of the study was to investigate the association between blood and tissue levels of selenium and thyroid cancer through a systematic review. We searched for observational studies written in English, Spanish, and Portuguese indexed in PubMed, LILACS, and Scielo without date restriction, that evaluated the association between selenium levels in whole-blood, serum, or plasma and/or thyroid tissue and thyroid cancer, both in individuals with cancer of thyroid as in healthy individuals. Then data were extracted and analyzed. Of the 570 articles identified, five cross-sectional studies were included in the review. In one study, lower concentrations of selenium were found in whole-blood (0.543 μg/ml) and in the thyroid (0.88 μg/g) of thyroid cancer patients compared to controls. Another study showed a decrease in serum selenium concentrations in patients with follicular carcinoma and papillary types (0.077 ± 0.021 μg/ml and 0.080 ± 0.020 μg/ml, respectively). On the other hand, other studies showed no difference in plasma selenium content or glutathione peroxidase activity among patients and healthy volunteers. The available evidence on this issue is inconclusive. Additional studies are needed to elucidate the association between serum and/or tissue levels of selenium and the development of thyroid cancer.

O selênio é essencial para a saúde humana. Dentre os alimentos considerados fonte de selênio, estão as castanhas brasileiras, carnes, ovos, leites e outros, variando conforme a área geográfica de plantio ou criação do animal. Dados de Se em alimentos cultivados, industrializados e comercializados no Brasil são ausentes em tabelas de composição de alimentos brasileiras. O objetivo do estudo foi determinar a concentração de selênio em leite bovino in natura produzido no Ceará, região Nordeste do Brasil. Trata-se de uma pesquisa experimental, onde as amostras foram coletadas em municípios das principais bacias leiteiras do Ceará. As concentrações de selênio foram determinadas por Espectrofotometria de Absorção Atômica por Geração de Hidretos acoplado a cela de quartzo. Os teores de umidade, cinzas e proteína foram analisados segundo a metodologia da Association of Official Analytical Chemists (1980), o teor de lipídios por método de Soxhlet e a quantidade de carboidratos foi calculada por diferença. A média das concentrações de selênio, umidade, cinza, proteína, lipídio e carboidrato do leite bovino in natura foi de 2.9 µg/100mL, 89.0 mg/100 mL, 0.6 mg/100mL, 2.9 mg/100mL, 3.6 mg/100mL e 4.0 mg/100mL, respectivamente. A concentração de selênio no leite bovino in natura variou de 0.1-9.0 µg/100ml, sendo em algumas localidades superior em relação a outras localidades do Brasil e do mundo, podendo contribuir para o consumo deste mineral pela população do estado.

O presente estudo tem como objetivo avaliar a prevalência de dislipidemia e estimar o risco cardiovascular segundo indicadores bioquímicos mais precisos em adolescentes, de acordo com o estado nutricional. Trata-se de um estudo transversal realizado com 807 adolescentes de escolas públicas, de ambos os sexos, com idade entre 10 a 17 anos. O estado nutricional foi classificado de acordo com o índice de massa corporal. Foi considerada dislipidemia a presença de níveis aumentados em pelo menos um dos parâmetros do perfil lipídico: triglicerídeos (TG), colesterol total e frações de alta (HDL-c) e baixa densidade (LDL-c). O risco cardiovascular foi estimado pelo cálculo do Índice de Castelli I (IC-I) e II (IC-II), TG/HDL-c e não-HDL-c. Os dados foram analisados pela regressão de Poisson com estimativas robustas da variância com nível de significância de 5%. A idade mediana foi de 13 (12-14) anos, dos quais 57,7% eram do sexo feminino. Foi encontrado uma prevalência de 32% de excesso de peso. O excesso de peso esteve associado ao risco cardiovascular em adolescentes, sendo o IC-II (RP: 2,75; IC95%: 1,77-4,27; p

Past research has shown the importance of zinc in several metabolic processes, such as the glucidic metabolism. The present systematic review aims to discuss zinc's participation in the glycemic control of type 2 diabetes mellitus (DM2) patients. In order to accomplish that, a systematic search was performed in the Pubmed database using the following indexed and theme-related descriptors: "zinc" AND "type 2 diabetes mellitus", AND MeSH terms related to glycemic control combined with the boolean operator OR. In total, 1078 articles were retrieved from the research, of which 15 articles of original studies conducted with DM2 patients were included, with three being about the effect of mineral supplementation and 12 reporting observational studies. The main findings of these studies consisted of low body contents of zinc and high excretion of zinc in urine. Hyperglycemia was one of the mechanisms that caused these alterations owing to its interference in zinc reabsorption via renal cells. Another evidence was the negative correlation between the glycated hemoglobin percentage (%HbA1c) and the plasma zinc levels. Additionally, it has been observed that zinc supplementation in DM2 patients has improved glycemic control, since the %HbA1c significantly reduced in these individuals. This present review shows the positive effect of adequate zinc levels on glycemic control, whether it is through dietetic ingestion or supplementation, since its role in insulin homeostasis is clear.

Objective Crohn disease (CD) is characterized by chronic intestinal inflammation and various factors involved in its pathogenesis including oxidative stress. The oxidative stress in CD may compromise antioxidant nutrients, such as selenium. The aim of this study was to assess the status of selenium and its relationship with markers of oxidative stress in patients with CD in comparison to controls. Methods The study included 47 patients with CD (20 with active disease and 27 in remission) and 25 healthy individuals. Blood samples were collected for the analysis of plasma and erythrocyte selenium concentrations using inductively coupled plasma optical emission spectrometry (ICP-OES). Selenoprotein P (SepP) was evaluated by sandwich enzyme-linked immunosorbent assay, erythrocyte glutathione peroxidase (GPx1) activity was assessed by using an automatic biochemistry analyzer, and the concentration of thiobarbituric acid reactive substances (TBARS) was measured. Comparative analyses were performed using one-way analysis of variance and Tukey's post hoc test. For correlations, Pearson's coefficient test was used. The determinants for CD and lipid peroxidation were indicated by odds ratio. Results Plasma and erythrocyte selenium levels and SepP concentrations were lower in the CD patient groups than in the healthy group. GPx1 activity and the concentration of TBARS were significantly higher in the CD groups. In the univariate analysis, plasma and erythrocyte selenium and TBARS were associated with CD. Conclusion Patients with CD have impaired selenium status, which is related to the increased oxidative stress observed in these patients.

Summary Background & aims The Dietary Inflammatory Index (DII) consists of a tool that assesses dietary inflammatory potential based on the assignment of an inflammatory score to a variety of nutrients, seasonings and bioactive compounds. Pro-inflammatory diets are associated to weight and abdominal fat excess. High Body Mass Index (BMI) and Waist Circumference (WC) seem to contribute to a worse prognosis in Multiple Sclerosis (MS) patients. Therefore, this study seeks to investigate the relation between anthropometric indexes and body adiposity with the clinical condition and the Dietary Inflammatory Index of MS individuals. Methods This is a cross-sectional, analytical study that included 137 MS patients residing in the Brazilian northeast. Through a structured questionnaire and medical records consultation, we collected data on demographics, nutritional state, arterial pressure, clinical and dietary variables. Clinical variables included the MS type, number of pulse therapies and attack rate in the last two years, number of days of most recent pulse therapy and muscular strength assessment scores (MRC) and most recent disability level (EDSS). The nutritional state was evaluated based on BMI, WC, waist-hip ratio (WHR), Body Roundness Index (BRI), Body Shape z score Index (ABSIz) and body fat percentage (%BF). The DII was calculated according to a validated methodology. Results The ABSIz presented a positive correlation with regards to the EDSS score (r = 0.294. p = 0.001). WC and WHR presented a negative correlation in relation to the number of pulse therapy days (r = −0.255. p = 0.022 and r = −0.251. p = 0.024). BMI and %BF were not correlated to clinical variables (p > 0.05). The DII was positively correlated to the BMI in people with progressive MS (r = 0.556. p = 0.025). Conclusions The DII may interfere in the nutritional state of MS patients and the nutritional state may affect disability levels but it is necessary to establish which nutritional indicator can better predict the relation between DII and the clinical condition of MS patients.

Studies about selenium status in patients with Turner syndrome (TS) are non-existent in the literature. The aim of this study was to evaluate selenium status in patients with TS, while considering the different ages of the studied population and the relation with body composition. In total, 33 patients with TS were evaluated and grouped according to their developmental stages (children, adolescents, and adults). Selenium concentrations in their plasma, erythrocytes, urine, and nails were determined by using hydride generation atomic absorption spectrometry and erythrocyte glutathione peroxidase activity were measured by using Randox commercial kits. Additionally, height, weight, body fat percentage, waist circumference, and waist-height ratio were measured to characterize the patients. No differences in the selenium concentrations in the plasma, erythrocyte, urine, and nails or in the glutathione peroxidase activity were observed among the age groups (p > 0.05). The evaluated selenium levels were less than the established normal ones. The patients with larger waist circumference, body fat percentage, body mass index, and waist-height ratio showed lower glutathione peroxidase enzyme activity (p = 0.023). The present study shows that most patients with TS are deficient in selenium and that those with a greater accumulation of body fat have a lower GPx activity.