Protective effects of silymarin-loaded chitosan nanoparticles in the diet-induced hyperlipidemia rat model

Document Type : Original Article

Authors

1 Department of Veterinary Basic Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran

2 Department of Veterinary Pathobiology, Science and Research Branch, Islamic Azad University, Tehran, Iran

3 Department of Pharmacognosy, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran

4 Department of Veterinary Clinical Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran

Abstract

Objective(s): Obesity is a metabolic syndrome that leads to many chronic diseases worldwide. In this study, we investigate the antihyperlipidemic activities of chitosan nanoparticles (CH NPs) on silymarin (SIL) as a carrier in the drug delivery system that can improve some biochemical parameters and hormones in the model of hyperlipidemic rats receiving a high-fat diet (HFD). 
Materials and Methods: Physicochemical characterization of silymarin-loaded chitosannanoparticles (CH-SIL NPs) was done by Fourier-transform infrared (FTIR) spectroscopy, dynamic light scattering (DLS), and drug loading efficiency (LE). Diet-induced hyperlipidemic rats were treated with SIL (15 mg/kg/day) and CH-SIL NPs(15 mg/kg/day) for twelve weeks orally daily. The body weight loss (BW), food consumption, serum total cholesterol (TC), triglycerides (TG), high-density lipoprotein (HDL), levels of fasting blood glucose (FBG) in serum, serum insulin, cortisol, testosterone, and brain neuropeptide Y (NPY), Y1 and Y5 receptor mRNA expression were analyzed. 
Results: A significant reduction in BW and food consumption from 417 ± 16 g and 33 ± 1.03 in group HFD to 338 ± 10 g and 17.33 ± 1.02 in group CHS+HFD was observed, respectively. This data revealed that CH-SIL NPs improved hyperlipidemia, hyperinsulinemia, and hyperglycemia, reduced serum cortisol, and down-regulated NPY and Y1R with a significant increase in HDL and testosterone hormones compared to the control group. 
Conclusion: The developed Sil-loaded CH NPs were good agents for improving efficacy. It is the first report of the proposed weight loss mechanism of SIL CH NPs, thereby providing information about the anti-hyperlipidemic and antihyperglycemic effects of silymarin-loaded chitosan nanoparticles, a natural food with proper effects against metabolic disorders in case of hyperlipidemia that may lead to obesity and up-regulation of brain NPY. 

Keywords

Main Subjects

References

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Iranian Journal of Basic Medical Sciences
Volume 27, Issue 6
June 2024
Pages 725-732

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