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2000
Volume 33, Issue 1
  • ISSN: 0929-8673
  • E-ISSN: 1875-533X

Abstract

Introduction

Endothelial dysfunction (ED) results from impaired vascular endothelial cell function, disrupting key processes such as hemostasis, vascular tone regulation, vasculogenesis, angiogenesis, and inflammation. These processes are mediated by a complex signaling network involving hormones, cytokines, and chemokines. ED is recognized as a major contributor to the onset and progression of several micro- and macrovascular diseases, including diabetes. Our previous study demonstrated that the polyphenol Rosolic acid (RA) protects against endoplasmic reticulum (ER) stress-induced ED by activating nuclear factor erythroid 2-related factor 2 (Nrf2). Additionally, RA enhanced the proliferation and survival of pancreatic β-cells in a co-culture model with endothelial cells under ER stress conditions.

Methods

In this study, we investigated RA's protective effects against diabetes-induced ED using high-fat diet (HFD)-fed and streptozotocin-induced type-2 diabetic rat models. We evaluated RA’s impact on vascular function and metabolic parameters in these models.

Results

RA significantly mitigated diabetes-induced ED in the aortic tissues of HFD-fed diabetic Wistar rats. RA treatment improved glucose tolerance and reduced hyperlipidemia, showing efficacy comparable to the anti-diabetic drug Gliclazide. Moreover, RA elevated Nrf2 levels and its downstream target genes in aortic tissues while reducing ED markers such as Intercellular Adhesion Molecule 1 (ICAM1), vascular cell adhesion molecule 1 (VCAM1), and endothelin-1.

Conclusion

These findings highlight RA as a promising therapeutic agent for diabetes and its associated vascular complications, with potential for broader clinical applications.

© 2026 Bentham Science Publishers
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2025-12-31

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Therapeutic Effect of Rosolic Acid against Endothelial Dysfunction in Diabetic Wistar Rats
Curr. Med. Chem. 33, 232 (2026); https://doi.org/10.2174/0109298673358006250213053647
/content/journals/cmc/10.2174/0109298673358006250213053647
/content/journals/cmc/10.2174/0109298673358006250213053647
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  • Article Type:     Research Article
Keyword(s): diabetes; Endothelial dysfunction; Nrf2; rosolic acid; small molecules; vascular complications

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