Eicosapentaenoic acid/docosahexaenoic acid 1:1 ratio improves histological alterations in obese rats with metabolic syndrome

Lipids in Health and Disease

M Rosa Nogués¹  Isabel Medina³  Manuel Pazos³  Josep Lluís Torres⁵  Eunice Molinar-Toribio⁵  Àngels Fortuño²  Montserrat Jové⁴  Laura Lluís¹  Mònica Muñoz-Cortés¹  Núria Taltavull¹ 

[1] Unit of Pharmacology, Faculty of Medicine and Health Sciences, Rovira i Virgili University, Reus, Spain;Anatomical Pathology Service, Eldine Laboratory, Tarragona, Spain;Institute of Marine Research-CSIC, Vigo, Spain;Unit of Human Anatomy, Faculty of Medicine and Health Sciences, Rovira i Virgili University, Reus, Spain;Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), Barcelona, Spain

关键词: Fish oils;    SHROB rats;    Histology;    EPA/DHA ratio;    Omega-3-polyunsaturated fatty acids;    Metabolic syndrome;   

Others  :  811449
DOI  :  10.1186/1476-511X-13-31

 received in 2013-10-11, accepted in 2014-02-06,  发布年份 2014

【 摘 要 】

Background

Marine polyunsaturated fatty acids, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) have been associated with improvement in the Metabolic Syndrome (MS). The aim of this study is to evaluate how three fish-oil diets with different eicosapentaenoic acid/docosahexaenoic acid ratios (EPA/DHA ratio) affect the histology of liver, kidney, adipose tissue and aorta in a preliminary morphological study. This work uses an animal model of metabolic syndrome in comparison with healthy animals in order to provide information about the best EPA:DHA ratio to prevent or to improve metabolic syndrome symptoms.

Methods

35 Wistar rats, as a control, and 35 spontaneously hypertensive obese rats (SHROB) were fed for 13 weeks with 3 different suplemmentation of fish oil containing EPA and DHA ratios (1:1, 2:1 and 1:2, respectively). All samples were stained with haematoxylin/eosin stain, except aorta samples, which were stained also with Verhoeff and van Gieson’s stain. A histological study was carried out to evaluate changes. These changes were statistically analyzed using SPSS IBM 19 software. The quantitative data were expressed by mean ± SD and were compared among groups and treatments using ANOVA with post-hoc tests for parametric data and the U-Mann–Whitney for non-parametric data. Qualitative data were expressed in frequencies, and compared with contingency tables using χ² statistics.

Results

EPA:DHA 1:1 treatment tended to improve the density and the wrinkling of elastic layers in SHROB rats. Only Wistar rats fed with EPA:DHA 1:1 treatment did not show mast cells in adipose tissue and has less kidney atrophy. In both strains EPA:DHA 1:1 treatment improved inflammation related parameters in liver and kidney.

Conclusions

EPA:DHA 1:1 treatment was the most beneficial treatment since improved many histological parameters in both groups of rats.

【 授权许可】

   
2014 Taltavull et al.; licensee BioMed Central Ltd.

【 图 表 】

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