Alfonso Valenzuela

Summary

Affiliation: Universidad de Chile
Country: Chile

Publications

  1. ncbi Trans fatty acid isomers in human health and in the food industry
    A Valenzuela
    Laboratorio de Lípidos y Antioxidantes, INTA, Universidad de Chile, Santiago, Chile
    Biol Res 32:273-87. 1999
  2. ncbi Inhibitory action of conventional food-grade natural antioxidants and of natural antioxidants of new development on the thermal-induced oxidation of cholesterol
    Alfonso Valenzuela
    Laboratorio de Lípidos y Antioxidantes, INTA, Universidad de Chile, Casilla 138 11 Santiago, Chile
    Int J Food Sci Nutr 55:155-62. 2004
  3. ncbi Effect of the degree of hydrogenation of fish oil on the enzymatic activity and on the fatty acid composition of hepatic microsomes from young and aged rats
    Nora Morgado
    Laboratorio de Lípidos y Antioxidantes, Instituto de Nutrición y Tecnología de Alimentos INTA, Universidad de Chile, Casilla, Santiago, Chile
    Ann Nutr Metab 47:124-31. 2003
  4. ncbi [Docosahexaenoic acid (DHA) in fetal development and in infant nutrition]
    A Valenzuela
    Laboratorio de Lípidos y Antioxidantes, Instituto de Nutrición y Tecnología de alimentos, Universidad de Chile
    Rev Med Chil 129:1203-11. 2001
  5. ncbi Tissue accretion and milk content of docosahexaenoic acid in female rats after supplementation with different docosahexaenoic acid sources
    Alfonso Valenzuela
    Laboratorio de Lípidos y Antioxidantes, INTA, Universidad de Chile, Santiago, Chile
    Ann Nutr Metab 49:325-32. 2005
  6. ncbi Comparative effect of fish oil feeding and other dietary fatty acids on plasma lipoproteins, biliary lipids, and hepatic expression of proteins involved in reverse cholesterol transport in the rat
    Nora Morgado
    Laboratorio de Lípidos y Antioxidantes, INTA, Universidad de Chile, Santiago
    Ann Nutr Metab 49:397-406. 2005
  7. ncbi Effect of supplementation with docosahexaenoic acid ethyl ester and sn-2 docosahexaenyl monoacylglyceride on plasma and erythrocyte fatty acids in rats
    Alfonso Valenzuela
    Unidad de Bioquimica, Facultad de Medicina, Universidad de Los Andes, Santiago, Chile
    Ann Nutr Metab 49:49-53. 2005
  8. ncbi Cholesterol oxidation: health hazard and the role of antioxidants in prevention
    Alfonso Valenzuela
    Laboratory of Lipids and Antioxidants, INTA, University of Chile, Santiago, Chile, P O Box 138 11, Santiago, Chile
    Biol Res 36:291-302. 2003
  9. ncbi Supplementation of female rats with alpha-linolenic acid or docosahexaenoic acid leads to the same omega-6/omega-3 LC-PUFA accretion in mother tissues and in fetal and newborn brains
    Alfonso Valenzuela
    Laboratory of Biochemistry, School of Medicine, University Los Andes, Santiago, Chile
    Ann Nutr Metab 48:28-35. 2004
  10. doi Bioconversion of α-linolenic acid to n-3 LCPUFA and expression of PPAR-alpha, acyl Coenzyme A oxidase 1 and carnitine acyl transferase I are incremented after feeding rats with α-linolenic acid-rich oils
    Daniel González-Mañán
    Oxidative Stress and Hepatotoxicity Laboratory, University of Chile, Santiago, Chile
    Food Funct 3:765-72. 2012

Collaborators

  • Rommy von Bernhardi
  • Nora Morgado
  • Daniel González-Mañán
  • Amanda D'Espessailles
  • Alejandra Espinosa
  • Lilia Masson
  • Juan Guillermo Gormaz
  • Gladys Tapia
  • Patricia Varela
  • Rodrigo Valenzuela

Detail Information

Publications10

  1. ncbi Trans fatty acid isomers in human health and in the food industry
    A Valenzuela
    Laboratorio de Lípidos y Antioxidantes, INTA, Universidad de Chile, Santiago, Chile
    Biol Res 32:273-87. 1999
    ....
  2. ncbi Inhibitory action of conventional food-grade natural antioxidants and of natural antioxidants of new development on the thermal-induced oxidation of cholesterol
    Alfonso Valenzuela
    Laboratorio de Lípidos y Antioxidantes, INTA, Universidad de Chile, Casilla 138 11 Santiago, Chile
    Int J Food Sci Nutr 55:155-62. 2004
    ..delta-T, rutin and boldine are devoid of protective action against COP formation. gamma-T, quercetin and rosemary extract may inhibit COP formation from the nucleus and from the lateral chain of the cholesterol molecule...
  3. ncbi Effect of the degree of hydrogenation of fish oil on the enzymatic activity and on the fatty acid composition of hepatic microsomes from young and aged rats
    Nora Morgado
    Laboratorio de Lípidos y Antioxidantes, Instituto de Nutrición y Tecnología de Alimentos INTA, Universidad de Chile, Casilla, Santiago, Chile
    Ann Nutr Metab 47:124-31. 2003
    ..Microsomal TRANS fatty acid composition is not affecting the activity of the enzymes, the age of the animals being the most important factor...
  4. ncbi [Docosahexaenoic acid (DHA) in fetal development and in infant nutrition]
    A Valenzuela
    Laboratorio de Lípidos y Antioxidantes, Instituto de Nutrición y Tecnología de alimentos, Universidad de Chile
    Rev Med Chil 129:1203-11. 2001
    ..Breast feeding provides DHA to the child, but most replacement artificial formulas do not provide this fatty acid. At the present moment, many products for infant nutrition contain DHA...
  5. ncbi Tissue accretion and milk content of docosahexaenoic acid in female rats after supplementation with different docosahexaenoic acid sources
    Alfonso Valenzuela
    Laboratorio de Lípidos y Antioxidantes, INTA, Universidad de Chile, Santiago, Chile
    Ann Nutr Metab 49:325-32. 2005
    ..We evaluated comparatively the effectiveness of these different DHA sources to produce tissue DHA accretion and to increase milk DHA content...
  6. ncbi Comparative effect of fish oil feeding and other dietary fatty acids on plasma lipoproteins, biliary lipids, and hepatic expression of proteins involved in reverse cholesterol transport in the rat
    Nora Morgado
    Laboratorio de Lípidos y Antioxidantes, INTA, Universidad de Chile, Santiago
    Ann Nutr Metab 49:397-406. 2005
    ..On the other hand, omega-3 PUFAs decrease plasma HDL levels compared to other fatty acids, which may suggest an effect on reverse cholesterol transport...
  7. ncbi Effect of supplementation with docosahexaenoic acid ethyl ester and sn-2 docosahexaenyl monoacylglyceride on plasma and erythrocyte fatty acids in rats
    Alfonso Valenzuela
    Unidad de Bioquimica, Facultad de Medicina, Universidad de Los Andes, Santiago, Chile
    Ann Nutr Metab 49:49-53. 2005
    ..sn-2 Fatty acid monoacylglycerides can be more easily absorbed at the intestine than other fatty acid derivatives...
  8. ncbi Cholesterol oxidation: health hazard and the role of antioxidants in prevention
    Alfonso Valenzuela
    Laboratory of Lipids and Antioxidants, INTA, University of Chile, Santiago, Chile, P O Box 138 11, Santiago, Chile
    Biol Res 36:291-302. 2003
    ..Some natural antioxidants, such as alpha- and gamma-tocopherol, rosemary oleoresin extract, and the flavonoid quercetin, show strong inhibitory action against cholesterol oxidation...
  9. ncbi Supplementation of female rats with alpha-linolenic acid or docosahexaenoic acid leads to the same omega-6/omega-3 LC-PUFA accretion in mother tissues and in fetal and newborn brains
    Alfonso Valenzuela
    Laboratory of Biochemistry, School of Medicine, University Los Andes, Santiago, Chile
    Ann Nutr Metab 48:28-35. 2004
    ..However, the bioequivalence of LNA ingestion to DHA supplementation has not been established...
  10. doi Bioconversion of α-linolenic acid to n-3 LCPUFA and expression of PPAR-alpha, acyl Coenzyme A oxidase 1 and carnitine acyl transferase I are incremented after feeding rats with α-linolenic acid-rich oils
    Daniel González-Mañán
    Oxidative Stress and Hepatotoxicity Laboratory, University of Chile, Santiago, Chile
    Food Funct 3:765-72. 2012
    ..Only CAT-I levels were increased by RO. CO and RMO may be a nutritional alternative to provide ALA for its bioconversion to EPA and DHA, and to increase the expression of PPAR-α, ACOX1 and CAT-I, especially CO-oil...