Publications by authors named "Francisco Perez-Bravo"

Background And Objective: The global aging population has led to increased noncommunicable diseases, often linked to poor diet and declining muscle strength and mass. This study assessed leucine intake and sarcopenia indicators among 181 adults aged 60-80 in Santiago, Chile, participating in the Program for Complementary Food in Older People (PACAM), with 80% being women.

Methods: Sarcopenia was evaluated through muscle strength and mass using the EWGSOP2 criteria for its identification.

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Objectives: It is unclear whether parental consumption of non-nutritive sweetener (NNS) can affect subsequent generations. The aim of this study was to determine whether chronic parental consumption of sucralose and stevia in mice affects body weight gain and liver and intestinal expression of histone deacetylase 3 (Hdac3) in these animals and in the subsequent first filial (F1) and second filial (F2) generations.

Methods: Male and female mice (n = 47) were divided into three groups to receive water alone or supplemented with sucralose (0.

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Objective: To analyze the nutritional status and plasma levels of vitamins and minerals in a cohort of Chilean children between 4 and 14 years old from three cities in Chile (Santiago, Antofagasta, and Concepcion).

Design: This is a descriptive analysis of micronutrient levels in Chilean children as it relates to obesity and food consumption.

Setting: This study included 1235 children from schools in Santiago (central area), Antofagasta (northern area), and Concepcion (southern area) in Chile.

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Background And Aim: Diabetes mellitus is a carbohydrate metabolism disorder produced mainly by a deficit in insulin production or insulin resistance. The homeostatic model assessment (HOMA) is a broad method for estimating insulin resistance and β-cell function. This study aimed to evaluate the stages of insulin resistance using non-linear HOMA index analysis in normoglycemic normal weight and obese canines.

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Article Synopsis
  • * The study examined 259 Chilean adults to assess the prevalence of the risk allele (A) of the rs483145 SNP and its relationship with various adiposity markers, using real-time PCR and linear regression analysis.
  • * Results showed that 24.5% of participants carried the risk allele, but there was no significant association found with body weight or other fat-related metrics, indicating the need for further research with larger sample sizes.
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The increase in the Chilean elderly population has promoted public policies to favor an adequate nutrition in later life. This study evaluated the nutritional status, micronutrients intake and serum micronutrients levels of an elderly group beneficiary of the PACAM from the Metropolitan Region, Santiago de Chile. Anthropometric and dietary survey (24 h food recalls) were assessed in 182 elderly individuals (60 and 80 years old).

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Background And Aim: The classification of diabetes mellitus (DM) in dogs has been controversial as currently canine insulin-dependent DM is classified together with absolute insulin deficiency, non-insulin-dependent DM, and relative insulin deficiency. Studies on human autoantibodies evaluated in canines with DM, such as anti-glutamic acid decarboxylase (GAD65), anti-islet antigen 2 (IA2), and anti-zinc transporter isoform 8 (ZnT8), have been inconclusive. Thus, this study was designed to establish the serological profile of anti-GAD65, anti-IA2, and anti-ZnT8 antibodies in a group of dogs with and without DM.

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Background: Vitamin D [25(OH)D] is essential for normal bone development and maintenance. Furthermore, its deficiency has been associated with obesity, cardiovascular diseases, insulin resistance, autoimmune diseases, and certain cancers.

Objective: To determine the incidence of serum 25(OH)D deficiency (<20 ng/ml) among apparently healthy Chilean children (4-14 years old) from three Chilean geographic areas during May-September 2018.

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Background: Genetic variants within the FTO gene have been associated with increased adiposity and metabolic markers; however, there is limited evidence regarding the association of FTO gene variants with physical activity-related variables. The authors aimed to investigate the association of the rs17817449 single-nucleotide polymorphism of FTO with physical activity, sedentary time, and cardiorespiratory fitness in Chilean adults.

Methods: A total of 409 participants from the GENADIO study were included and genotyped for the rs17817449 single-nucleotide polymorphism of FTO in this cross-sectional study.

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Article Synopsis
  • - The MC4R gene is involved in controlling appetite and has been linked to obesity, particularly looking at a specific SNP, rs483145, but research on this SNP is limited.
  • - The study aimed to assess the prevalence of the rs483145 SNP and its connection to various obesity-related measurements in a sample of 259 Chilean adults.
  • - Findings revealed that 24.5% of participants carried the risk allele (A) of this SNP, but it showed no significant relation to adiposity markers, indicating further research with larger samples is needed.
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Article Synopsis
  • The study examined how specific gene variants affect obesity and metabolic markers in non-diabetic Chilean adults, focusing on the SLC16A11 gene and its rs75493593 polymorphism.
  • It involved 263 participants and used real-time PCR to analyze the association of this gene variant with various health metrics like insulin levels, body mass index (BMI), and lipid profiles through linear regression.
  • Findings revealed that the minor allele of the variant is common among Chileans and is linked to higher insulin levels and BMI, indicating potential early metabolic risks that could lead to type 2 diabetes.
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Purpose: Type 1 diabetes (T1D) is an autoimmune disease that involves genetic, epigenetic, and environmental factors. Change in body composition is a potential mechanism for explaining the increased incidence of T1D. Micro RNA-378 (miRNA-378) is a positive regulator of adipogenesis that has yet to be studied in such patients.

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Clinical and experimental evidences indicate that epigenetic modifications induced by the prenatal environment are related to metabolic and reproductive derangements in polycystic ovary syndrome (PCOS). Alterations in the leptin and adiponectin systems, androgen signalling and antimüllerian hormone (AMH) levels have been observed in PCOS women and in their offspring. Using a targeted Next-Generation Sequencing (NGS), we studied DNA methylation in promoter regions of the leptin (), leptin receptor (), adiponectin (), adiponectin receptor 1 and 2 ( and ), and androgen receptor () genes in 24 sons and daughters of women with PCOS (12 treated with metformin during pregnancy) and 24 children born to non-PCOS women during early infancy (2-3 months of age).

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Background: The role of microRNAs (miRNAs) in celiac disease (CD) is unclear.

Aims: We evaluated inflammation-related miRNA-146a, miRNA-155, miRNA-21, and miRNA-125b expression in peripheral blood and intestinal mucosa of CD adults.

Methods: Thirty patients with CD were included: patients with active CD on a gluten-containing diet (CD-active, n = 10), patients on a gluten-free diet (for at least 1 year), and patients with negative blood antibodies (CD-inactive, n = 10).

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Article Synopsis
  • The FTO gene variants are linked to a higher risk of obesity, and this study specifically explores their effects on the Chilean population, which hasn't been previously studied.
  • Researchers analyzed genetic data from 409 Chilean adults, measuring various markers related to body fat and metabolism.
  • The results showed significant associations between the FTO gene polymorphism and markers of obesity and insulin levels, suggesting potential risks for diabetes and metabolic syndrome in Chileans.
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Background: Numerous studies have identified the role of Fat-mass-associated-gene (FTO) in the development of obesity.

Aim: To investigate the association of FTO gene with adiposity markers in Chilean adults.

Material And Methods: 409 participants were included in this cross-sectional study.

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Introduction: the histological alteration in the small intestine of the celiac patients produces a poor absorption that deteriorates or hinder an optimal weight gain. This can be the result of an increase expression of the Th17 gluten-specific interleukins.

Objective: the aim of this study was to compare the expression of Th17 interleukins in celiac patients with normal and overweight/obese nutritional status.

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Objective The aim of this research was to analyze the expression profile of miR-155, miR-146a, and miR-326 in peripheral blood mononuclear cells (PBMC) of 47 patients with type 1 diabetes mellitus (T1D) and 39 control subjects, as well as the possible association with autoimmune or inflammatory markers. Subjects and methods Expression profile of miRs by means of qPCR using TaqMan probes. Autoantibodies and inflammatory markers by ELISA.

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Background/objective: Interest in healthy properties of food and nutrients as co-adjuvant in type-2 diabetes therapy has increased in recent years. Zinc supplementation trials have shown improvements in glycemic control in these patients, although it seems dependent on zinc status of the individuals. The objective of this study was to evaluate the relationship between zinc nutritional status and glucose homeostasis in patients with type-2 diabetes.

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Glucagon dysregulation is an essential component in the pathophysiology of type 2 diabetes. Studies in vitro and in animal models have shown that zinc co-secreted with insulin suppresses glucagon secretion. Zinc supplementation improves blood glucose control in patients with type 2 diabetes, although there is little information about how zinc supplementation may affect glucagon secretion.

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Context: Polycystic ovary syndrome (PCOS) is an androgen excess disorder associated with obesity and adipose tissue disturbances. Our aim was to evaluate gene expression of adipocytokines and adipocyte characteristics in abdominal subcutaneous adipose tissue (SAT) of PCOS women.

Design: Twelve PCOS (PCOSw) and 12 control (Cw) premenopausal women (BMI 20-35 kg/m) were included, with measurements of whole-body composition assessed by dual-energy X-ray absorptiometry, and abdominal subcutaneous and visceral adipose tissue (VAT) volume, by magnetic resonance imaging.

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Background: Current reports applying ESPGHAN exception criteria (EEC) to diagnose celiac disease (CD) without duodenal biopsies indicate that a high percentage of patients with CD may be identified when applied correctly in specialized settings. Application of the EEC, however, in "daily life conditions" at the different levels of medical services is not clear.

Methods: EEC was applied to 130 pediatric patients evaluated for CD at 5 public hospitals in Santiago, Chile, during 2010 to 2015.

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