ISFOOD - Institute on Innovation & Sustainable Development in Food Chain

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Browsing ISFOOD - Institute on Innovation & Sustainable Development in Food Chain by Author "Aguilera, Concepción María"

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    PublicationOpen Access
    Circulating miRNAs as biomarkers of obesity and obesity-associated comorbidities in children and adolescents: a systematic review
    (MDPI, 2019) Osés Recalde, Maddi; Margareto, Javier; Portillo, María P.; Aguilera, Concepción María; Labayen Goñi, Idoia; Institute on Innovation and Sustainable Development in Food Chain - ISFOOD
    Early detection of obesity and its associated comorbidities in children needs priority for the development of effective therapeutic intervention. Circulating miRNAs (microRNAs) have been proposed as biomarkers for obesity and its comorbidities; therefore, we conducted a systematic review to summarize results of studies that have quantified the profile of miRNAs in children and adolescents with obesity and/or associated disorders. Nine studies aiming to examine differences in miRNA expression levels between children with normal weight and obesity or between obese children with or without cardiometabolic diseases were included in this review. We identified four miRNAs overexpressed in obesity (miR-222, miR-142–3, miR-140-5p, and miR-143) and two miRNAs (miR-122 and miR-34a) overexpressed in children with obesity and nonalcoholic fatty liver disease (NAFLD) and/or insulin resistance. In conclusion, circulating miRNAs are promising diagnostic biomarkers of obesity-associated diseases such as NAFLD and type 2 diabetes already in childhood. However, more studies in children, using massive search technology and with larger sample sizes, are required to draw any firm conclusions.
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    PublicationOpen Access
    Integrated analysis of methylome and transcriptome responses to exercise training in children with overweight/obesity
    (American Physiological Society, 2025-01-30) Plaza Florido, Abel; Anguita-Ruiz, Augusto; Esteban, Francisco J.; Aguilera, Concepción María; Labayen Goñi, Idoia; Reitzner, Stefan Markus; Sundberg, Carl Johan; Radom-Aizik, Shlomit; Ortega, Francisco B.; Altmäe, Signe; Ciencias de la Salud; Osasun Zientziak; Institute on Innovation and Sustainable Development in Food Chain - ISFOOD
    We examined the effects of a 20-wk exercise intervention on whole blood genome-wide DNA methylation signature and its association with the exercise-induced changes in gene expression profiles in boys and girls with overweight/obesity (OW/OB). Twenty-three children (10.05 ± 1.39 yr, 56% girls) with OW/OB were randomized to either a 20-wk exercise intervention [exercise group (EG); n = 10; 4 boys/6 girls] or to usual lifestyle [control group (CG); n = 13; 6 boys/7 girls]. Whole blood genome-wide methylome (CpG sites) analysis using Infinium Methylation EPIC array and transcriptome analysis using RNA-seq (STRT2 protocol) were performed. Exercise-induced modifications in DNA methylation at 485 and 386 CpGs sites in boys and girls, respectively. These CpG sites aremapped to loci enriched in distinct gene pathways related to metabolic diseases, fatty acid metabolism, and immune function. In boys, changes in the DNA methylation of 87 CpG sites (18% of the 485 CpGs sites altered by exercise) were associated with changes in the gene expression levels of 51 genes also regulated by exercise. Among girls, changes in DNAmethylation at 46 CpG sites (12% of the initial 386 significant CpGs)were associatedwith changes in the expression levels of 30 exercise-affected genes. Genes affected by exercise that were associated with DNAmethylation are related to obesity, metabolic syndrome, and inflammation. Multiomics analysis of whole blood samples from children with OW/OB suggests that gene expression response to exercisemay bemodulated by DNAmethylation and involve gene pathways related tometabolismand immune functions. NEW & NOTEWORTHY This study pioneers the exploration into the effects of exercise on whole blood genome-wide DNA methylation patterns and its association with changes in transcriptome profiles in children with overweight/obesity. Exercise potentially impacts molecular pathways involved in metabolism and immune functions in children with overweight/obesity (sex-specific responses) through the modification of epigenetic and transcriptomic profiles. Our preliminary results provide initial steps to understand better the molecular mechanisms underlying cardiometabolic benefits of exercise in children with overweight/obesity.
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    PublicationOpen Access
    No evidence of brown adipose tissue activation after 24 weeks of supervised exercise training in young sedentary adults in the ACTIBATE randomized controlled trial
    (Nature Research, 2022) Martínez Téllez, Borja; Sánchez Delgado, Guillermo; Acosta, Francisco M.; Alcántara Alcántara, Juan Manuel; Amaro Gahete, Francisco J.; Martínez Ávila, Wendy D.; Merchán Ramírez, Elisa; Muñoz-Hernández, Victoria; Osuna Prieto, Francisco J.; Jurado Fasoli, Lucas; Xu, Huiwen; Ortiz Álvarez, Lourdes; Arias Téllez, María J.; Méndez Gutiérrez, Andrea; Labayen Goñi, Idoia; Ortega, Francisco B.; Schönke, Milena; Rensen, Patrick C. N.; Aguilera, Concepción María; Llamas Elvira, José M.; Gil, Ángel; Ruiz, Jonatan R.; Institute on Innovation and Sustainable Development in Food Chain - ISFOOD
    Exercise modulates both brown adipose tissue (BAT) metabolism and white adipose tissue (WAT) browning in murine models. Whether this is true in humans, however, has remained unknown. An unblinded randomized controlled trial (ClinicalTrials.gov ID: NCT02365129) was therefore conducted to study the effects of a 24-week supervised exercise intervention, combining endurance and resistance training, on BAT volume and activity (primary outcome). The study was carried out in the Sport and Health University Research Institute and the Virgen de las Nieves University Hospital of the University of Granada (Spain). One hundred and forty-five young sedentary adults were assigned to either (i) a control group (no exercise, n = 54), (ii) a moderate intensity exercise group (MOD-EX, n = 48), or (iii) a vigorous intensity exercise group (VIG-EX n = 43) by unrestricted randomization. No relevant adverse events were recorded. 97 participants (34 men, 63 women) were included in the final analysis (Control; n = 35, MOD-EX; n = 31, and VIG-EX; n = 31). We observed no changes in BAT volume (Δ Control: −22.2 ± 52.6 ml; Δ MOD-EX: −15.5 ± 62.1 ml, Δ VIG-EX: −6.8 ± 66.4 ml; P = 0.771) or 18F-fluorodeoxyglucose uptake (SUVpeak Δ Control: −2.6 ± 3.1 ml; Δ MOD-EX: −1.2 ± 4.8, Δ VIG-EX: −2.2 ± 5.1; p = 0.476) in either the control or the exercise groups. Thus, we did not find any evidence of an exercise-induced change on BAT volume or activity in young sedentary adults.
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    PublicationOpen Access
    Peripheral blood mononuclear cells-expressed miRNA profiles derived from children with metabolic-associated fatty liver disease and insulin resistance
    (Wiley, 2022) Osés Recalde, Maddi; Medrano Echeverría, María; Margareto, Javier; Portillo, María P.; Aguilera, Concepción María; Altmäe, Signe; Labayen Goñi, Idoia; Institute on Innovation and Sustainable Development in Food Chain - ISFOOD; Gobierno de Navarra / Nafarroako Gobernua
    Background: miRNA have been proposed as potential biomarkers of metabolic diseases. Objectives: To identify potential miRNA biomarkers of early metabolic-associated fatty liver disease (MAFLD) and/or insulin resistance (IR) in preadolescent children. Methods: A total of 70 preadolescents, aged 8.5–12 years old participated in the study. Hepatic fat was assessed by magnetic resonance imaging. Fasting blood biochemical parameters were measured and HOMA-IR calculated. Peripheral blood mononuclear cells (PBMC)-derived miRNA profiles associated with MAFLD (≥5.5% hepatic fat) and IR (HOMA-IR ≥2.5) were identified using untargeted high-throughput miRNAs sequencing (RNA-seq). Results: A total of 2123 PBMC-derived miRNAs were identified in children with (21.4%) or without MAFLD. Among them, hsa-miR-143-3p, hsa-miR-142-5p and hsamiR-660-5p were up-regulated, and p-hsa-miR-247, hsa-let-7a-5p and hsa-miR6823-3p down-regulated. Importantly, children with MAFLD had consistently higher miR-660-5p expression levels than their peers without it (p < 0.01), regardless of weight status. A total of 2124 PBMC-derived miRNA were identified in children with IR (28.6%) versus children without IR, where thirteen of them were dysregulated (p < 0.05) in children with IR. In addition, children with IR showed higher levels of miR-374a-5p and miR-190a-5p (p < 0.01) and lower levels of miR-4284 and miR4791 (p < 005), than their peers without IR in both the whole sample and in those with overweight or obesity. Conclusions: Our study results suggest circulating miR-660-5p as a potential biomarker of the presence of MAFLD in preadolescent children while circulating miR320a, miR-142-3p, miR-190a-5p, miR-374a-5p and let-7 family miRNAs could serve as potential biomarkers of IR in children.
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    PublicationOpen Access
    The role of sex in the relationship between fasting adipokines levels, maximal fat oxidation during exercise, and insulin resistance in young adults with excess adiposity
    (Elsevier, 2023) Chávez-Guevara, Isaac A.; Amaro Gahete, Francisco J.; Osuna Prieto, Francisco J.; Labayen Goñi, Idoia; Aguilera, Concepción María; Ruiz, Jonatan R.; Ciencias de la Salud; Osasun Zientziak; Institute on Innovation and Sustainable Development in Food Chain - ISFOOD
    Aim: Previous evidence suggest that a sexual dimorphism in exercise fat oxidation and adipokines levels may explain a lower risk of cardio-metabolic disorders in women. Therefore, we investigated the role of sex in the relationship between adipokines levels, maximal fat oxidation (MFO) during exercise and insulin resistance. Methods: Fifty young adults with excess adiposity (31 women; body fat: 38.7 ± 5.3%) were included in this study. The fasting levels of leptin, adiponectin, glucose and insulin were determined from blood samples and the homeostatic model assessment of insulin resistance index (HOMA-IR) subsequently calculated. Body fat percentage and visceral adipose tissue (VAT) were assessed through dual-energy X-ray absorptiometry whereas MFO was estimated during an incremental-load exercise test after an overnight fasting through indirect calorimetry. Results: Men had lower levels of body fat (d = 1.80), adiponectin (d = 1.35), leptin (d = 0.43) and MFO (d = 1.25) than women. Conversely, men showed higher VAT (d = 0.85) and fasting glucose levels (d = 0.89). No sex differences were observed in HOMA-IR (d = 0.34). Adipokines levels were not associated with MFO in both sexes (r < 0.30), whereas adiponectin levels were inversely related with HOMA-IR in both men (r = −0.58) and women (r = −0.50). Leptin concentration was associated to HOMA-IR only in men (r = 0.41), while no statistically significant relationships were observed between MFO and HOMA-IR in both sexes (r < 0.44). Conclusion: Insulin resistance was similar between sexes regardless of superior levels of adipokines and MFO during exercise in women. Therefore, adiponectin and leptin may regulate glucose homeostasis without altering whole body fat oxidation rate during exercise.