CRIS

Permanent URI for this communityhttps://cris.ute.edu.ec/handle/123456789/1

Browse

Search Results

Now showing 1 - 6 of 6
  • Some of the metrics are blocked by your 
    Item type:Publication,
    Obesity and breast cancer: exploring the nexus of chronic inflammation, metabolic dysregulation, and nutritional strategies
    (Informa UK Limited, 2025-06-23)
    Claudia Reytor-González
    ;
    Daniel Simancas-Racines
    ;
    Náthaly Mercedes Román-Galeano
    ;
    Martín Campuzano-Donoso
    ;
    Angelo Michele Carella
    The global prevalence of obesity has risen to epidemic proportions, posing significant health challenges across populations and contributing to increased morbidity and mortality from non-communicable diseases. Among its many consequences, obesity is now firmly established as a modifiable risk factor for breast cancer, particularly in postmenopausal women. The association between obesity and breast cancer is driven by complex and interrelated biological mechanisms, including chronic low-grade inflammation, hormonal imbalances, adipokine dysregulation, insulin resistance, and metabolic dysfunction. These factors collectively create a pro-tumorigenic environment that supports cancer initiation, progression, and recurrence. This review explores the multifaceted nexus between obesity and breast cancer, emphasizing the critical role of inflammatory, hormonal, and metabolic pathways in mediating disease risk and outcomes. Additionally, it highlights the emerging contribution of gut microbiome dysbiosis in modulating host immunity and systemic inflammation in the context of obesity. Nutritional strategies—ranging from dietary pattern modification to caloric restriction and time-restricted feeding (TRF)—are examined for their potential to reduce risk, enhance treatment efficacy, and improve survivorship in breast cancer patients.
  • Some of the metrics are blocked by your 
    Item type:Publication,
    Preventing and Managing Pre- and Postoperative Micronutrient Deficiencies: A Vital Component of Long-Term Success in Bariatric Surgery
    (MDPI AG, 2025-02-20) ;
    Evelyn Frias-Toral
    ;
    ; ;
    Raynier Zambrano-Villacres
    Bariatric surgery (BS) is an effective treatment for severe obesity and its related comorbidities, such as type 2 diabetes and hypertension. However, the anatomical and physiological changes associated with these procedures significantly increase the risk of preoperative and postoperative micronutrient deficiencies, which can lead to severe complications such as anemia, osteoporosis, and neurological disorders. This narrative review examines the prevalence and clinical implications of micronutrient deficiencies in BS patients, as well as evidence-based strategies for their prevention and management. The most common deficiencies include iron, vitamin B12, folate, calcium, vitamin D, and fat-soluble vitamins (A, E, and K). Procedures with a hypoabsorptive component, such as Roux-en-Y gastric bypass (RYGB) and biliopancreatic diversion with duodenal switch (BPD/DS), pose higher risks of deficiencies compared to restrictive procedures like sleeve gastrectomy (SG). Effective strategies involve the preoperative correction of deficiencies, continuous monitoring, and tailored supplementation. However, long-term adherence to supplementation tends to decrease over time, influenced by behavioral and socioeconomic factors. Hence, preventing and managing micronutrient deficiencies are crucial for the long-term success of BS. While current guidelines provide valuable recommendations, many are based on low-certainty evidence, underscoring the need for more robust studies. A multidisciplinary approach, combined with innovative strategies, such as telemedicine, can enhance adherence and achieve sustainable clinical outcomes.
  • Some of the metrics are blocked by your 
    Item type:Publication,
    Preoperative Nutrition in Bariatric Surgery: A Narrative Review on Enhancing Surgical Success and Patient Outcomes
    (MDPI AG, 2025-02-02) ;
    Evelyn Frias Toral
    ;
    Martín Campuzano-Donoso
    ;
    ;
    Raynier Zambrano-Villacres
    Bariatric surgery has become the preferred treatment for individuals with morbid obesity. Nutrition is key in optimizing surgical outcomes by reducing risks and enhancing recovery. Preoperative strategies, such as reducing body fat, decreasing liver size, and improving metabolic profiles, have been shown to facilitate safer surgical procedures with fewer complications. This narrative review aims to provide an analysis of the fundamental role of preoperative nutritional management in improving bariatric surgery outcomes, emphasizing the importance of addressing specific nutritional challenges to enhance surgical safety, recovery, and overall health. Preoperative nutritional interventions focus on correcting comorbidities and nutritional deficiencies, particularly hypovitaminosis and micronutrient imbalances, through a multidisciplinary approach involving nutritionists and other healthcare professionals. These interventions not only prepare patients for the physiological demands of surgery but also initiate a period of adaptation to new dietary habits, aiming to improve long-term compliance and mitigate risks such as postoperative weight regain and dumping syndrome. Adopting dietary changes, such as very low-calorie or ketogenic diets 6–12 weeks before surgery, enhances adherence to postoperative restrictions and overall surgical success. Future research should focus on developing comprehensive guidelines for preoperative nutritional care to improve patient outcomes globally.
  • Some of the metrics are blocked by your 
    Item type:Publication,
    Microbiota dynamics preceding bariatric surgery as obesity treatment: a comprehensive review
    (Frontiers Media SA, 2024-04-03) ;
    Elius Paz-Cruz
    ;
    Viviana A. Ruiz-Pozo
    ;
    Santiago Cadena-Ullauri
    ;
    Rafael Tamayo-Trujillo
    The review present data on the intricate relationship between bariatric surgery, gut microbiota, and metabolic health in obesity treatment. Bariatric surgery, is recognized as an effective intervention for managing morbid obesity, including various techniques with distinct mechanisms of action, efficacy, and safety profiles including Roux-en-Y Gastric Bypass (RYGB), Sleeve Gastrectomy (SG), Laparoscopic Adjustable Gastric Banding (LAGB), and Biliopancreatic Diversion (BPD). RYGB and SG are the most prevalent procedures globally, inducing gut microbiota changes that influence microbial diversity and abundance. Post-surgery, alterations in bacterial communities occur, such as the increased of <jats:italic>Escherichia coli inversely correlated with fat mass and leptin levels. During digestion, microbiota produce physiologically active compounds like bile acids (Bas) and short-chain fatty acids (SCFAs). SCFAs, derived by microbial fermentation, influence appetite, energy metabolism, and obesity-related pathways. Bas, altered by surgery, modulate glucose metabolism and insulin sensitivity. Furthermore, SG and RYGB enhance incretin secretion, particularly glucagon-like peptide 1 (GLP-1). Therefore, understanding microbiota changes after bariatric surgery could be crucial for predicting metabolic outcomes and developing targeted interventions for obesity management.
  • Some of the metrics are blocked by your 
    Item type:Publication,
    Molecular mechanisms of semaglutide and liraglutide as a therapeutic option for obesity
    Obesity, a chronic global health problem, is associated with an increase in various comorbidities, such as cardiovascular disease, type 2 diabetes mellitus, hypertension, and certain types of cancer. The increasing global prevalence of obesity requires research into new therapeutic strategies. Glucagon-like peptide-1 receptor agonists, specifically semaglutide and liraglutide, designed for type 2 diabetes mellitus treatment, have been explored as drugs for the treatment of obesity. This minireview describes the molecular mechanisms of semaglutide and liraglutide in different metabolic pathways, and its mechanism of action in processes such as appetite regulation, insulin secretion, glucose homeostasis, energy expenditure, and lipid metabolism. Finally, several clinical trial outcomes are described to show the safety and efficacy of these drugs in obesity management.
  • Some of the metrics are blocked by your 
    Item type:Publication,
    Obesity and periodontitis: a comprehensive review of their interconnected pathophysiology and clinical implications
    (Frontiers Media SA, 2024-08-07) ; ;
    Natali González
    ;
    Alison Simancas-Racines
    ;
    Raynier Zambrano-Villacres
    Obesity and periodontitis are significant health problems with a complex bidirectional relationship. Excess body fat is linked to systemic diseases and can lead to persistent inflammation, potentially harming periodontal health. Periodontitis, a chronic inflammatory condition affecting the supporting structures of teeth, poses substantial health risks. Both conditions share pathological processes such as inflammation and oxidative stress, which aggravate health status and make treatment more challenging. Understanding this interaction is crucial for developing effective management strategies for both diseases. This study explores the multifaceted aspects of obesity and periodontitis and their reciprocal relationship.