Publications by authors named "Marcela Augusta De Souza Pinhel"

The mechanisms by which the ageing process is associated to an unhealthy lifestyle and how they play an essential role in the aetiology of systemic arterial hypertension have not yet been completely elucidated. Our objective is to investigate the influence of NOS3 polymorphisms [-786T > C and (Glu298Asp)] on systolic blood pressure (SBP) and diastolic blood pressure (DBP) response, differentially methylated regions (DMRs), and physical fitness of adult and older women after a 14-week combined training intervention. The combined training was carried out for 14 weeks, performed 3 times a week, totalling 180 minutes weekly.

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  • Blood selenium concentrations vary by population and can lead to serious health issues if deficient, especially influenced by genetic factors.
  • The study involved 382 individuals and used advanced techniques to identify specific genetic variants (SNPs) related to selenium deficiency.
  • Findings revealed key genetic associations and highlighted interactions with metabolic pathways, indicating a complex relationship between selenium intake and genetic influences on health.
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Introduction: There is an emerging body of evidence that vitamin C consumption can modulate microbiota abundance and can also impact DNA methylation in the host, and this could be a link between diet, microbiota, and immune response. The objective of this study was to evaluate common CpG sites associated with both vitamin C and microbiota phyla abundance.

Methods: Six healthy women participated in this cohort study.

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Exercise training emerges as a key strategy in lifestyle modification, capable of reducing the risk of developing Alzheimer's disease (AD) due to risk factors such as age, family history, genetics and low level of education associated with AD. We aim to analyze the effect of a 14-week combined exercise training (CT) on the methylation of genes associated with AD in non-alzheimer's disease women. CT sessions lasted 60 min, occurring three times a week for 14 weeks.

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Introduction: The increasing prevalence of obesity has become a major health problem worldwide. The causes of obesity are multifactorial and could be influenced by dietary patterns and genetic factors. Obesity has been associated with a decrease in micronutrient intake and consequently decreased blood concentrations.

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Endoscopic procedure using argon plasma coagulation (APC) promotes a progressive reduction in gastrojejunal anastomosis diameter. The present study aimed to evaluate the efficacy of the APC in patients with weight regain in the postoperative periods of gastric bypass. This was a randomized controlled trial conducted with 66 patients who were randomly assigned selected (using lottery method) and divided into two groups: study group (SG), 38 patients (APC treatment); and control group (CG), 28 patients (only endoscopy procedure).

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Background: Hepatocellular carcinoma (HCC) is the most common type of liver cancer. Risk factors for HCC include hepatitis C (HCV) and B (HBV) virus infection, alcoholic cirrhosis and genetic alterations that can affect several cellular pathways.

Objective: This study purposed to analyze the gene and serum protein expression of vascular endothelial growth factor (VEGF), angiogenesis, alpha fetoprotein, cystatin B (CSTB), β-catenin and glypican-3 (GPC3) in groups with HCC, cirrhosis or HCV and controls, and their relation with clinical staging in the HCC and cirrhosis groups, as well its sensitivity and specificity values.

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Background: Pre-diabetes precedes Diabetes Mellitus (DM) disease and is a critical period for hyperglycemia treatment, especially for menopausal women, considering all metabolic alterations due to hormonal changes. Recently, the literature has demonstrated the role of physical exercise in epigenetic reprogramming to modulate the gene expression patterns of metabolic conditions, such as hyperglycemia, and prevent DM development. In the present study, we hypothesized that physical exercise training could modify the epigenetic patterns of women with poor glycemic control.

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  • The study investigates the genetic links between vitamin D transporter protein and cytochrome P450-24A1 in cirrhosis patients, both with and without hepatocellular carcinoma (HCC), analyzing their demographic, clinical, and biochemical profiles.
  • A total of 383 individuals were categorized into three groups: patients with cirrhosis and HCC, patients with isolated cirrhosis, and a control group without liver disease, using genetic analysis methods like real-time PCR.
  • Results indicated that specific genetic polymorphisms were more common in patients with HCC, highlighting factors such as advanced age, smoking, and diabetes as predictors for cirrhosis and HCC, while some genetic markers correlated with improved survival
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Background: Autism spectrum disorder (ASD) is a multifaceted neurodevelopmental disorder requiring multimodal intervention and an army of multidisciplinary teams for a proper rehabilitation plan. Accordingly, multiple practice guidelines have been published for different disciplines. However, systematic evidence to detect and intervene must be updated regularly.

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"Nutrition transition" describes the shifts in dietary consumption and energy expenditure influenced by economic, demographic, and epidemiological changes at a population level. This phenomenon has been associated with rising obesity rates worldwide, especially in developed countries. In Brazil, the historical analysis of temporal trends between malnutrition and obesity characterized the nutrition transition in the country and interweaved it with the formulation and implementation of public food and nutrition policies.

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Obesity is directly connected to lifestyle and has been associated with DNA methylation changes that may cause alterations in the adipogenesis and lipid storage processes contributing to the development of the disease. We demonstrate a complete protocol from selection to epigenetic data analysis of patients with and without obesity. All steps from the protocol were tested and validated in a pilot study.

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Introduction: Nutriepigenetic markers are predictive responses associated with changes in "surrounding" environmental conditions of humans, which may influence metabolic diseases. Although rich in calories, Western diets could be linked with the deficiency of micronutrients, resulting in the downstream of epigenetic and metabolic effects and consequently in obesity. Zinc (Zn) is an essential nutrient associated with distinct biological roles in human health.

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Matrix metalloproteinases (MMP) and their endogenous inhibitor, the tissue inhibitor of metalloproteinases (TIMP), are expressed in many different cell types and play an important role in physiologic and pathological degradation of extracellular matrix (ECM). Starting from these observations and considering the activation state of peripheral blood mononuclear cells (PBMCs) in obesity, we investigated the gene expression of metalloproteinases before and after Roux-en-Y gastric bypass (RYBG). The study was performed in the Ribeirão Preto Medical School University Hospital.

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  • The study aimed to examine the link between specific Single Nucleotide Polymorphisms (SNPs) in the DRD2 and BDNF genes and Binge Eating Disorder (BED) in patients who regained weight after bariatric surgery.
  • Researchers evaluated 177 bariatric surgery patients, assessing anthropometric measurements, BED using questionnaires, and genotyping relevant SNPs through real-time PCR.
  • Results showed that certain allele variants (CT and TT for DRD2 rs1800497; GA and AA for BDNF rs6265) were more common in patients with BED, suggesting these genetic factors increase the risk of BED, particularly in those who have experienced weight regain.
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Background: Telomeres are structures located at the ends of chromosomes associated with a protein complex, known as the shelterin complex. In individuals with obesity, excess adipose tissue plays a key role in inducing a chronic and systemic inflammatory state, which can cause TL shortening. In this context, bariatric surgery is one of the most effective treatment modalities in improving metabolic control.

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The Human Genome Project has significantly broadened our understanding of the molecular aspects regulating the homeostasis and the pathophysiology of different clinical conditions. Consequently, the field of nutrition has been strongly influenced by such improvements in knowledge - especially for determining how nutrients act at the molecular level in different conditions, such as obesity, type 2 diabetes, cardiovascular disease, and cancer. In this manner, characterizing how the genome influences the diet and vice-versa provides insights about the molecular mechanisms involved in chronic inflammation-related diseases.

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Background: : Bariatric surgery promotes significant weight loss and improvement of associated comorbidities; however, nutrients deficiencies and weight regain may occur in the middle-late postoperative period.

Aim: To investigate nutritional status in 10 years follow-up.

Methods: : Longitudinal retrospective study in which anthropometric, biochemical indicators and nutritional intake were assessed before and after one, two, three, four, five and ten years of Roux-en Y gastric bypass through analysis of medical records.

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  • - Telomeres, protective structures at the ends of chromosomes, shorten with each cell division and can be affected by lifestyle choices, especially due to obesity-induced inflammation.
  • - The review explores how obesity leads to telomere shortening and identifies key risk factors influencing this process.
  • - It concludes that telomere length may serve as a biomarker to measure the effectiveness of weight loss strategies on addressing obesity.
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Introduction: obesity is associated with high levels of oxidative stress (OS) and inflammation. There is a lot of evidence that some polyphenols, such as green tea, have a positive impact on the OS state and consecutively, on inflammation. Objectives: the purposes of this study were: a) evaluate OS biomarkers in both obese and normal weight women; and b) evaluate if green tea supplementation has an impact on OS and inflammatory cytokine biomarkers of obese women.

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  • The human biological system controls food intake through a complex network of neuroendocrine signals that modulate appetite and satiety, involving various tissues, hormones, and neural circuits.
  • Dysregulation of these signaling pathways can lead to eating disorders and obesity, emphasizing the importance of these mechanisms for maintaining energy balance.
  • Genetic factors, particularly Single Nucleotide Polymorphisms (SNPs) in genes associated with appetite regulation and brain reward systems, play a significant role in the development of eating disorders like Binge Eating Disorder and Bulimia Nervosa.
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Objectives: After bariatric surgery, modifications to signaling pathway networks including those of the metabolic regulator called mammalian or mechanistic target of rapamycin (mTOR) may lead to molecular alterations related to energy source availability, systemic nutrients, and catabolic and anabolic cellular processes. This study aimed to identify gene expression changes with regard to the mTOR complex 2 subunit signaling pathway in obese patients before and after bariatric surgery.

Methods: The experimental group included 13 obese women who were examined before (preoperative) and 6 mo after (postoperative) Roux-en-Y gastric bypass (RYGB) surgery.

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