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AdipoRon, adiponectin receptor agonist, improves vascular function in the mesenteric arteries of type 2 diabetic mice

Authors
 Soo-Kyoung Choi  ;  Youngin Kwon  ;  Seonhee Byeon  ;  Chae Eun Haam  ;  Young-Ho Lee 
Citation
 PLOS ONE, Vol.15(3) : e0230227, 2020 
Journal Title
 PLOS ONE 
Issue Date
2020
Abstract
BACKGROUND: An orally active synthetic adiponectin receptor agonist, AdipoRon has been suggested to ameliorate insulin resistance, and glucose tolerance. However, the chronic effect of AdipoRon in the vascular dysfunction in type 2 diabetes has not been studied yet. Thus, in this study, we examined whether AdipoRon improves vascular function in type 2 diabetes. METHODS: Type 2 diabetic (db-/db-) mice were treated with AdipoRon (10 mg/kg/everyday, by oral gavage) for 2 weeks. Body weight and blood glucose levels were recorded every other day during the experimental period. Diameter of mesenteric arteries was measured. And western blot analysis was performed with mesenteric arteries. RESULTS: Pressure-induced myogenic response was significantly increased while endothelium-dependent relaxation was reduced in the mesenteric arteries of db-/db- mice. Treatment of AdipoRon normalized potentiated myogenic response, whereas endothelium-dependent relaxation was not affected by treatment of AdipoRon. The expression levels of AdiR1, AdiR2, APPL1, and APPL 2 were increased in the mesenteric arteries of db-/db- mice and treatment of AdipoRon did not affect them. Interestingly, AdipoRon treatment increased the phospho-AMPK and decreased MYPT1 phosphorylation in db-/db- mice while there was no change in the level of eNOS phosphorylation. CONCLUSION: The treatment of AdipoRon improves vascular function in the mesenteric arteries of db-/db- mice through endothelium-independent mechanism. We suggest that MLCP activation through reduced phosphorylation of MYPT1 might be the dominant mechanism in the AdipoRon-induced vascular effect.
DOI
10.1371/journal.pone.0230227
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Physiology (생리학교실) > 1. Journal Papers
Yonsei Authors
Byeon, Seon Hee(변선희) ORCID logo https://orcid.org/0000-0001-9256-5209
Lee, Young Ho(이영호) ORCID logo https://orcid.org/0000-0002-5749-1045
Choi, Soo Kyoung(최수경) ORCID logo https://orcid.org/0000-0002-7115-6358
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/175646
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