Effects of White Rice-Based Carbohydrates Diets on Body Weight and Metabolic Parameters in Rats

Main Article Content

Nur Maziah Hanum Osman
Barakatun-Nisak Mohd Yusof
Subramaniam Jeevetha
Amin Ismail
Azrina Azlan
Goh Yong Meng
Nor Azmi Kamaruddin
Minato Wakisaka

Abstract

Introduction: We clarified the extent to which white rice (WR)-based carbohydrate diets affect body weight and metabolic parameters in rats. Methods: In this experimental study, a male Sprague Dawley (n=32) rats fed with WR-based CHO diet in two different proportions of total energy intake (TEI 55% moderate-CHO (MCHO, n=8) and 65% High-CHO (HCHO, n=8)) or high-fat diet (HFD, n=8) were compared with rats maintained on standard pellet diet (SD, n=8) for eight weeks period. Carbohydrate sources in the HFD and SD were mainly based on cornstarch (25% of amylose). Outcomes measures include body weight and metabolic parameters. Results: At baseline, body weight and metabolic parameters (fasting plasma glucose, insulin, and triglyceride levels) were comparable in all rats. Despite higher daily caloric intake in rats fed with HFD (103.9±3.0) than the other diets, no significant differences in body weight between groups after 8 weeks of study. However, rats’ feds with WR-based CHO diets (both moderate and high carbohydrates) had higher fasting blood glucose (MCHO=12.8±1.6, HCHO=16.9±2.4) and triglycerides level (MCHO=1.2±0.0, HCHO=1.3±0.0) than rats in cornstarch-based HFD and SD (p<0.05). Both HFD and HCHO had higher fasting insulin than MCHO and SD (p<0.05), but the homeostatic model assessment of insulin resistance (HOMA-IR) was significantly higher in WR-based CHO diets (both moderate and high carbohydrates) than the rats in cornstarch-based HFD and SD (p<0.05). Conclusion: A WR-based CHO diet exhibits higher fasting blood glucose, triglycerides, and insulin resistance state than a high-fat diet without a significant impact on body weight. These findings may explain the growing incidence of diabetes in Asia and worth studying further.

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How to Cite
Osman, N. M. H., Mohd Yusof, B.-N., Jeevetha, S., Ismail, A., Azlan, A., Meng, G. Y., Kamaruddin, N. A., & Wakisaka, M. (2024). Effects of White Rice-Based Carbohydrates Diets on Body Weight and Metabolic Parameters in Rats. Malaysian Journal of Medicine and Health Sciences, 18(1), 234–240. Retrieved from http://mjmhsojs.upm.edu.my/index.php/mjmhs/article/view/95
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Original Articles

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