Now showing items 1-20 of 29

    • A 14-mo zinc-supplementation trial in apparently healthy chilean preschool children 

      Ruz, Manuel; Castillo-Duran, Carlos; Lara, Ximena; Codoceo, Juana; Rebolledo, Annabella; Alalah, Eduardo (American Society for Nutrition, 1997)
      Apparently healthy preschool children (46 boys, 52 girls) aged 27-50 mo from low socioeconomic conditions who attended daycare centers in Santiago participated in a 14-mo long double-blind zinc supplementation trial. Unlike ...
    • Acute inhibition of iron absorption by zinc 

      Pizarro Aguirre, Fernando; Pizarro Aguirre, Fernando; Gaitán, Diego; Ruz, Manuel (PERGAMON-ELSEVIER SCIENCE LTD., 2007-05)
      Iron and zinc deficiencies are the most common nutritional deficiencies worldwide. Combined zinc and iron supplementation is one of the strategies used to prevent these deficiencies. Zinc has an inhibitory effect on iron ...
    • Association between zinc nutritional status and glycemic control in individuals with well-controlled type-2 diabetes 

      Perez, Alvaro; Arenas Rojas, Pamela; Carrasco, Fernando; Basfi-fer, Karen; Perez-Bravo, Francisco; Codoceo, Juana; Inostroza, Jorge; Galgani, Jose E.; Gilmore, L. Anne; Ruz, Manuel (Elsevier GmbH, 2018)
      © 2018 Elsevier GmbH 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 ...
    • Calcium absorption may be affected after either sleeve gastrectomy or Roux-en-Y gastric bypass in premenopausal women: A 2-y prospective study 

      Carrasco, Fernando; Basfi-fer Obregón, Karen; Arenas Rojas, Pamela; Csendes Juhasz, Attila; Papapietro Vallejo, Karin; Codoceo, Juana; Inostroza, Jorge; Krebs, Nancy F.; Westcott, Jamie L.; Miller, Leland V.; Ruz, Manuel (Oxford University Press, 2018)
      © 2018 American Society for Nutrition. Background Although Roux-en-Y gastric bypass (RYGBP) is known to reduce calcium absorption (CA), the effects of vertical sleeve gastrectomy (SG) and its long-term implications on CA ...
    • Changes in bone mineral density after sleeve Gastrectomy or gastric bypass: Relationships with variations in vitamin D, ghrelin, and adiponectin levels 

      Carrasco, Fernando; Basfi-fer Obregón, Karen; Rojas, Pamela; Valencia, Alejandra; Csendes Juhasz, Attila; Codoceo, Juana; Inostroza, Jorge; Ruz, Manuel (Springer New York LLC, 2014)
      Background: A major long-term concern after gastric bypass (GBP) is the risk of osteoporosis; however, little is known about this complication in patients undergoing sleeve gastrectomy (SG). Objective: To evaluate changes ...
    • Changes in Bone Mineral Density, Body Composition and Adiponectin Levels in Morbid Obese Patients after Bariatric Surgery 

      Carrasco, Fernando; Ruz, Manuel; Rojas Mondaca, Pamela; Csendes Juhasz, Attila; Rebolledo Acevedo, Annabella; Codoceo, Juana; Inostroza Escobar, Jorge; Basfi-fer Obregón, Karen; Papapietro Vallejo, Karin; Rojas Caro, Jorge; Pizarro Aguirre, Fernando; Ordóñez Pizarro, Fernando (Springer, 2008)
      Introduction Gastric bypass surgery (GBP) is increasingly used as a treatment option in morbid obesity. Little is known about the effects of this surgery on bone mineral density (BMD) and the underlying mechanisms. To ...
    • Changes in bone mineral density, body composition and adiponectin levels in morbidly obese patients after bariatric surgery 

      Carrasco, Fernando; Ruz, Manuel; Arenas Rojas, Pamela; Csendes Juhasz, Attila; Rebolledo, Annabella; Codoceo, Juana; Inostroza, Jorge; Basfi-fer Obregón, Karen; Papapietro Vallejo, Karin; Vargas Rojas, Jorge Antonio; Pizarro Aguirre, Fernando; Olivares, Manuel (2009)
      Background: Gastric bypass surgery (GBP) is increasingly used as a treatment option in morbid obesity. Little is known about the effects of this surgery on bone mineral density (BMD) and the underlying mechanisms. To ...
    • Changes in ghrelin concentrations one year after resective and non-resective gastric bypass: Associations with weight loss and energy and macronutrient intakes 

      Carrasco, Fernando; Arenas Rojas, Pamela; Csendes Juhasz, Attila; Codoceo, Juana; Inostroza, Jorge; Basfi-fer Obregón, Karen; Papapietro Vallejo, Karin; Watkins, Guillermo; Vargas Rojas, Jorge Antonio; Ruz, Manuel (2012)
      Objective: Ghrelin is a potent stimulator of appetite and synthesized in the stomach. Its role in weight loss after gastric bypass (GBP) is still controversial. The aim of this study was to evaluate the relation between ...
    • Concordancia entre gasto energético y reposo medido y estimado por fórmulas predictivas en mujeres con obesidad severa y mórbida 

      Carrasco, F.; Rojas, P.; Ruz, Manuel; Rebolledo Acevedo, Annabella; Mizón, Claudio; Codoceo, Juana; Inostroza Escobar, Jorge; Papapietro Vallejo, Karin; Csendes Juhasz, Attila (2007)
      Objective: To compare measured resting energy expenditure (REE) with that predicted by formulas derived from populations with normal weight or obesity and from women with severe and morbid obesity. Material and methods: ...
    • Dietary supplementation with selenomethylselenocysteine produces a differential proteomic response 

      Mahn, Andrea V.; Toledo, Hector M.; Ruz, Manuel (2009)
      Organic forms of selenium offer important health benefits including cancer prevention. Selenium intake has been traditionally quantified as glutathioneperoxidase activity or selenium concentration in blood or tissues. ...
    • Efecto de dietas con restricción moderada de energía sobre el estado nutricional de algunos minerales en mujeres obesas 

      Aguirre O., María Eugenia; Ruz, Manuel; Carrasco, Fernando; Rebolledo Acevedo, Annabella; Araya, Karla; Codoceo, Juana; Inostroza Escobar, Jorge (Sociedad Latinoamericana de Nutrición, 2007)
      El objetivo del estudio fue comparar los cambios en la ingesta y estado nutricional de algunos minerales, durante tres meses de tratamiento para reducción de peso, utilizando dietas con distinto aporte energético. 62 ...
    • Energy expenditure and body composition in severe and morbid obese women after gastric bypass Gasto energético y composición corporal en mujeres con obesidad severa y mórbida sometidas a bypass gástrico 

      Carrasco, Fernando; Arenas Rojas, Pamela; Ruz, Manuel; Rebolledo, Anabella; Codoceo, Juana; Inostroza, Jorge; Mizón, Claudio; Papapietro Vallejo, Karin; Csendes Juhasz, Attila; Rojas, Jorge; Pizarro Aguirre, Fernando; Olivares, Manuel (Sociedad Medica de Santiago, 2008)
      Background: The effects of gastric bypass (GBP) on resting energy expenditure (REE) are not well known. Aim: To evaluate the changes in REE and its relationship with body composition in severe and morbid obese women before ...
    • Gasto energético y composición corporal en mujeres con obesidad severa y mórbida sometidas a bypass gástrico 

      Carrasco, Fernando; Rojas Mondaca, Pamela; Ruz, Manuel; Rebolledo Acevedo, Annabella; Codoceo, Juana; Inostroza Escobar, Jorge; Mizón, Claudio; Papapietro Vallejo, Karin; Csendes Juhasz, Attila; Rojas Caro, Jorge; Pizarro Aguirre, Fernando; Ordóñez Pizarro, Fernando (2008)
      The effects of gastric bypass (GBP) on resting energy expenditure (REE) are not well known. Aim: To evaluate the changes in REE and its relationship with body composition in severe and morbid obese women before and six ...
    • Heme- and nonheme-iron absorption and iron status 12 mo after sleeve gastrectomy and Roux-en-Y gastric bypass in morbidly obese women 

      Ruz, Manuel; Carrasco, Fernando; Rojas, Pamela; Codoceo, Juana; Inostroza, Jorge; Basfi-fer Obregón, Karen; Valencia, Alejandra; Csendes Juhasz, Attila; Papapietro Vallejo, Karin; Pizarro Aguirre, Fernando; Olivares, Manuel; Westcott, Jamie L.; Hambidge, K. Michael; Krebs, Nancy F. (2012)
      Background: The effect of bariatric surgery on iron absorption is only partially known. Objective: The objective was to study the effects of sleeve gastrectomy (SG) and Roux-en-Y gastric bypass (RYGBP) on heme- and ...
    • Inhibition of iron and copper uptake by iron, copper and zinc 

      Arredondo Olguín, Miguel; Martínez, Ronny; Núñez González, Marco; Ruz, Manuel; Olivares, Manuel (SOCIEDAD BIOLGIA CHILE, 2005-05-05)
      Interactions of micronutrients can affect absorption and bioavailability of other nutrients by a number of mechanisms. In aqueous solutions, and at higher uptake levels, competition between elements with similar chemical ...
    • Inhibition of iron and copper uptake by iron, copper and zinc 

      Arredondo Olguín, Miguel Armando; Martínez, Ronny; Núñez González, Marco; Ruz, Manuel; Olivares Grohnert, Manuel (2006)
      Interactions of micronutrients can affect absorption and bioavailability of other nutrients by a number of mechanisms. In aqueous solutions, and at higher uptake levels, competition between elements with similar chemical ...
    • Iron absorption and iron status are reduced after Roux-en-Y gastric bypass 

      Ruz, Manuel; Carrasco, Fernando; Arenas Rojas, Pamela; Codoceo, Juana; Inostroza, Jorge; Rebolledo, Annabella; Basfi-fer Obregón, Karen; Csendes Juhasz, Attila; Papapietro Vallejo, Karin; Pizarro Aguirre, Fernando; Olivares, Manuel; Sian, Lei; Westcott, Jamie L.; Hambidge, K. Michael; Krebs, Nancy F. (2009)
      Background: Iron deficiency and iron deficiency anemia are common in patients who undergo gastric bypass. The magnitude of change in iron absorption is not well known. Objective: The objective was to evaluate the effects ...
    • Iron, copper, and zinc transport: Inhibition of divalent metal transporter 1 (DMT1) and human copper transporter 1 (hCTR1) by shRNA 

      Espinoza, Alejandra; Le Blanc, Solange; Olivares, Manuel; Pizarro Aguirre, Fernando; Ruz, Manuel; Arredondo, Miguel (2012)
      Iron (Fe), copper (Cu), and zinc (Zn) fulfill various essential biological functions and are vital for all living organisms. They play important roles in oxygen transport, cell growth and differentiation, neurotransmitter ...
    • New insights about iron bioavailability inhibition by zinc 

      Ordóñez Pizarro, Fernando; Pizarro Aguirre, Fernando; Ruz, Manuel (ELSEVIER SCIENCE INC, 2007-04)
      Objective: We measured the effects of lower and higher doses of zinc (Zn) given as an aqueous solution on the bioavailability of iron (Fe). Methods: Fourteen healthy subjects received a solution with 0.5 mg of elemental ...
    • Persistent anemia after Roux-en-Y gastric bypass 

      Mizón, Claudio; Ruz, Manuel; Csendes Juhasz, Attila; Carrasco, Fernando; Rebolledo Acevedo, Annabella; Codoceo, Juana; Inostroza Escobar, Jorge; Papapietro Vallejo, Karin; Pizarro Aguirre, Fernando; Ordóñez Pizarro, Fernando (ELSEVIER, 2007)
      Objective: We report the case of a 42-y-old morbidly obese woman who presented persistent anemia as result of Roux-en-Y gastric bypass. Methods: The surgical procedure conducted in 1999 consisted of horizontal gastroplasty ...