Conjugated linoleic acid (CLA): effect modulation of body composition and lipid profile

نویسندگان

  • A. Baddini Feitoza
  • A. Fernandes Pereira
  • N. Ferreira
  • B. Gonçalves Ribeiro
  • Josue de Castro
چکیده

Resumen El ácido linoleico conjugado (CLA) es un ácido graso que pertenece al grupo de los ácidos grasos poliinsatura-dos, representado por el conjunto de isómeros del ácido linoleico, que son denominados conjugados porque poseen una doble conexión tras uma conexión simple. Dentre sus isómeros se distinguen el trans-10,cis-12 y cis-9, cis-12 CLA. Estos isômeros son capaces de promover efectos dis-tintos en el organismo: anticarcinogénesis, antidiabetogé-nesis, antiaterogénesis y câmbios de composición corporal. El objetivo de esta revisión es describir sus mecanismos de acción, los efectos en las lipoproteínas plasmáticas, en la composición corporal y la suplementación. Los estudios acerca de la suplementación del CLA demuestran su capa-cidad de reducir el porcentaje de grasa, el peso corporal, y de mejorar el metabolismo lipídico. Sin embargo, unos de los efectos contrários relacionados a uno de sus isômeros es la resistencia a la insulina a través de la redistribución de grasa corporal. Las limitaciones en los modelos científicos adotados en investigaciones acerca del CLA nos quitan la posibilidad de hacer conclusiones cuanto a la acción de este ácido graso en el metabolismo humano. Palabras clave: Ácido linoleico conjugado. Composición corporal. Porcentaje de grasa. Metabolismo lipídico. Abstract Conjugated linoleic acid (CLA) refers to a family of polyunsaturated fatty acids, being represented by a group of isomers of linoleic acid called conjugated for having a double bound after a simple bound. Among its isomers, trans-10,cis-12 and cis-9, cis-12 CLA stand out. These isomers can lead to different effects on the body: anticarcinogenic, antidiabetogenic, antiatherogenesis and positive body composition alteration. The objective of this review is to describe their mechanisms of action, effects on body composition, on plasmatic lipoproteins and supplementation. Studies about CLA supplementa-tion show its capacity of reducing fat percentage, body mass and of promoting an improvement in lipid metabolism. One of the adverse effects attributed to one of the isomers is insulin resistance by body fat redistribution. Limitations in the scientific models used in CLA researches make impossible to draw conclusions about the action of this fatty acid on human metabolism.

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Conjugated linoleic acid (CLA): effect modulation of body composition and lipid profile.

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تاریخ انتشار 2015