Wu Z, Gu L, Si Y, Yin W, Zhao M, Zhang T, Chen M. Macrovascular Protecting Effects of Berberine through Anti-inflammation and Intervention of BKCa in Type 2 Diabetes Mellitus Rats.
Endocr Metab Immune Disord Drug Targets 2021;
21:1270-1281. [PMID:
32888284 DOI:
10.2174/1871530320999200904123618]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 07/30/2020] [Accepted: 08/04/2020] [Indexed: 11/22/2022]
Abstract
OBJECTIVE
The aim of this study was to examine the effect of berberine on diabetes mellitus in vivo and in vitro, and elucidate the underlying mechanisms.
METHODS
Rat models of type 2 diabetes mellitus (T2DM) were established and were treated with berberine. Pathological changes in the thoracic aorta, and inflammatory factor and adiponectin levels were investigated. Vascular smooth muscle cells (VSMCs) of the thoracic aorta were cultured and treated with berberine. Cellular proliferation, migration, and inflammatory factor levels were investigated. Responses of vascular rings to phenylephrine (PE) and sodium nitroprusside (SNP) after berberine intervention and the changes of relaxation responses to SNP after adding Iberiotoxin (IbTX) were investigated.
RESULTS
Berberine ameliorated the pathological status of the thoracic aorta in the T2DM rats. Berberine significantly inhibited the C-reactive protein (CRP), interleukin-6 (IL-6), and tumor necrosis factor-α (TNF-α) production, and increased the adiponectin level compared with the model group. Compared with the model group, berberine inhibited the proliferation and migration of VSMCs in vitro, and reduced tumor growth factor-β1 (TGF-β1), IL-6, and TNF-α levels. Furthermore, the contraction of thoracic aorta to PE was reduced, while the relaxation response of thoracic aorta to SNP was increased, after the berberine intervention in the T2DM rats. The relaxation response of thoracic aorta to SNP in the model and berberine groups decreased after the IbTX treatment.
CONCLUSION
Protective effects of berberine against macrovascular complications induced by diabetes mellitus may be attributed to inhibiting of the inflammation and intervening of the calcium- activated potassium (BKCa).
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