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| Content Provider | Springer Nature Link |
|---|---|
| Author | Miranda, J. Fernández Quintela, A. Macarulla, M. T. Churruca, I. García, C. Rodríguez, V. M. Simon, E. Portillo, M. P. |
| Copyright Year | 2009 |
| Abstract | The potential of conjugated linoleic acid (CLA) as an anti-obesity molecule for humans is still a matter for debate. Thus, a great deal of scientific work is focussed on the research of new effective molecules without deleterious effects on health. The aim of the present work was to analyse the effects of jacaranda seed oil, rich in a conjugated linolenic acid (CLNA), jacaric acid (cis-8,trans-10,cis-12), on body fat, serum parameters and liver composition in rats, and to compare these effects with those oftrans-10,cis-12 CLA. Twenty-six male Wistar rats were divided into three groups fed with high-fat diets, supplemented or not (control group) with 0.5%trans-10,cis-12 CLA (CLA group) or 0.5% jacaric acid (CLNA group) for 7 weeks. No statistical differences in food intake or in final body weight were found. Whereas CLA reduced adipose tissue size, CLNA did not. Both CLA and CLNA significantly reduced non-HDL-cholesterol. In spite of a lack of significant changes in glucose and insulin levels, HOMA-IR index was significantly increased, as well as did non-esterified fatty acid levels in CLNA-fed rats. No changes in liver composition were observed. In conclusion, under our experimental conditions, jacaric acid, unlike CLA, does not show a body-fat lowering effect. Even though it leads to a healthy lipoprotein profile, it impairs insulin function. Consequently, it cannot be proposed as an anti-obesity molecule.El potencial del ácido linoleico conjugado (CLA) como molécula anti-obesidad para seres humanos sigue siendo una cuestión en debate. Por ello, gran cantidad de trabajos científicos se centra en la investigación de nuevas moléculas eficaces y sin efectos nocivos sobre la salud. El objectivo del presente trabajo fue estudiar, en rata, los efectors del aceite de semillas de jacaranda, rico en un ácido linolénico conjugado (CLNA), el ácido jacárico (cis-8,trans-10,cis-12), sobre la grasa corporal, parámetros séricos y la composición del hígado, y comparar estos efectos con los deltrans-10,cis-12, CLA. Se utilizaron 26 ratas Wistar macho divididas en tres grupos que fueron alimentados durante 7 semanas con dietas hipergrasas, suplementadas o no (grupo control) al 0,5% con eltrans-10,cis-12 CLA (grupo CLA) o al 0,5% con el ácido jacárico (grupo CLNA). No se encontraron diferencias significativas en la ingesta de dieta, ni en el peso corporal final, ni en la composición del hígado. El CLA redujo la masa adiposa, pero no lo hizo el CLNA. Ambos disminuyeron significativamente el colesterol no-HDL. A pesar de la ausencia de cambios significativos en la glucemia e insulinemia, el índice HOMA-IR y los niveles séricos de AGL aumentaron significativamente en las ratas alimentadas con CLNA. En conclusión, en nuestras condiciones experimentales, el ácido jacárico, a diferencia del CLA, no muestra un efecto reductor de la grasa corporal. A pesar de que mejora el perfil de lipoproteínas, altera la función insulínica. Por lo tanto, este CLNA no puede ser propuesto como una molécula antiobesidad. |
| Starting Page | 25 |
| Ending Page | 32 |
| Page Count | 8 |
| File Format | |
| ISSN | 11387548 |
| Journal | Journal of Physiology and Biochemistry |
| Volume Number | 65 |
| Issue Number | 1 |
| e-ISSN | 18778755 |
| Language | Spanish |
| Publisher | Springer Netherlands |
| Publisher Date | 2009-01-01 |
| Publisher Institution | University of Navarra, Spain |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Conjugated linolenic acid Conjugated linoleic acid Jacaric acid Body fat Liver Biochemistry Human Physiology Biomedicine general Animal Physiology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physiology Medicine Biochemistry |
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