Chronic l-arginine treatment improves metabolic, cardiovascular and liver complications in diet-induced obesity in rats
Article
Article Title | Chronic l-arginine treatment improves metabolic, cardiovascular and liver complications in diet-induced obesity in rats |
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ERA Journal ID | 123195 |
Article Category | Article |
Authors | Alam, Md. Ashraful (Author), Kauter, Kathleen (Author), Withers, Kerry (Author), Sernia, Conrad (Author) and Brown, Lindsay (Author) |
Journal Title | Food and Function |
Journal Citation | 4 (1), pp. 83-91 |
Number of Pages | 19 |
Year | 2013 |
Place of Publication | Cambridge, United Kingdom |
ISSN | 2042-6496 |
2042-650X | |
Digital Object Identifier (DOI) | https://doi.org/10.1039/c2fo30096f |
Web Address (URL) | http://www.rsc.org/foodfunction |
Abstract | l-Arginine is an important dietary amino acid in both health and disease, especially of the cardiovascular system. This study has determined whether dietary supplementation with l-arginine attenuates cardiovascular, metabolic, pancreatic and liver changes in a rat model of the human metabolic syndrome. Male Wistar rats (8-9 weeks old) were divided into four groups. Two groups of rats were fed a corn starch-rich diet (C) whereas the other two groups were given a high carbohydrate, high fat diet (H) with 25% fructose in the drinking water, for 16 weeks. One group fed each diet was supplemented with 5% l-arginine in the food for the final 8 weeks of this protocol. The corn starch diet (C) contained ∼68% carbohydrates mainly as polysaccharides, while the high-carbohydrate, high-fat diet contained ∼68% carbohydrates mainly as fructose and sucrose together with 24% fat mainly as saturated and monounsaturated fats from beef tallow. The high-carbohydrate, high-fat diet-fed rats showed the symptoms of metabolic syndrome including obesity and hypertension with heart and liver damage. Supplementation with l-arginine attenuated impairment in left ventricular and liver structure and function, glucose tolerance, and decreased blood pressure, abdominal fat pads, inflammatory cell infiltration, pancreatic cell hypertrophy and oxidative stress. This study indicates that oral supplementation with l-arginine attenuated or normalised obesity-related changes in the heart, liver and pancreas by reducing inflammation and oxidative stress associated with high carbohydrate, high fat feeding in rats. |
Keywords | corn starch; diet-induced obesity; dietary supplementation; four-group; glucose tolerance; high-fat diet; inflammatory cells; l-arginine; left ventricular; liver damage; metabolic syndromes; pancreatic cells; rat model; Wistar rat |
ANZSRC Field of Research 2020 | 321004. Nutritional science |
310902. Animal cell and molecular biology | |
321401. Basic pharmacology | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Queensland |
Department of Biological and Physical Sciences | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q1xzy/chronic-l-arginine-treatment-improves-metabolic-cardiovascular-and-liver-complications-in-diet-induced-obesity-in-rats
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