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Abstract Title:

A Protective Role of Paeoniflorin in Fluctuant Hyperglycemia-Induced Vascular Endothelial Injuries through Antioxidative and Anti-Inflammatory Effects and Reduction of PKC1.

Abstract Source:

Oxid Med Cell Longev. 2019 ;2019:5647219. Epub 2019 Apr 10. PMID: 31093316

Abstract Author(s):

Jing-Shang Wang, Ye Huang, Shuping Zhang, Hui-Jun Yin, Lei Zhang, Yan-Hong Zhang, Ye-Wen Song, Dan-Dan Li

Article Affiliation:

Jing-Shang Wang

Abstract:

Hyperglycemia fluctuation is associated with diabetes mellitus (DM) complications when compared to persistent hyperglycemia. Previous studies have shown that paeoniflorin (PF), through its antiapoptosis, anti-inflammation, and antithrombotic properties, effectively protects against cardiovascular and cerebrovascular disease. However, the mechanism underlying the protection from PF against vascular injuries induced by hyperglycemia fluctuations remains poorly understood. Herein, we investigated the potential protective role of PF on human umbilical vein endothelial cells (HUVECs) subjected to intermittent glucose levelsand in DM rats with fluctuating hyperglycemia. A remarkable increased apoptosis associated with elevated inflammation, increased oxidative stress, and high protein level of PKC1 was induced in HUVECs by intermittently changing glucose for 8 days, and PF recovered those detrimental changes. LY333531, a potent PKC1 inhibitor, and metformin manifested similar effects. Additionally, in DM rats with fluctuating hyperglycemia, PF protected against vascular damage as what has been observed. Taken together, PF attenuates the vascular injury induced by fluctuant hyperglycemia through oxidative stress inhibition, inflammatory reaction reduction, and PKC1 protein level repression, suggesting its perspective clinical usage.

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