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논문 기본 정보

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학술저널
저자정보
Weerapon Sangartit (Khon Kaen University Thailand) 하경봉 (연세대학교원주세브란스기독병원) 이은수 (연세대학교) 김홍민 (주식회사 아스트로젠) Upa Kukongviriyapan (Khon Kaen University) 이은영 (순천향대학교) 정춘희 (연세대학교)
저널정보
대한내분비학회 Endocrinology and Metabolism Endocrinology and Metabolism Vol.36 No.4
발행연도
2021.8
수록면
810 - 822 (13page)
DOI
https://doi.org/10.3803/EnM.2021.988

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Background: Activation of the intrarenal renin-angiotensin system (RAS) is implicated in the pathogenesis of kidney injury and hypertension. We aimed to investigate the protective effect of tetrahydrocurcumin (THU) on intrarenal RAS expression, kidney injury,and systolic blood pressure (SBP) in high-fat diet (HFD)-induced type 2 diabetic mice. Methods: Eight-week-old male mice were fed a regular diet (RD) or HFD for 12 weeks, and THU (50 or 100 mg/kg/day) was intragastrically administered with HFD. Physiological and metabolic changes were monitored and the expression of RAS componentsand markers of kidney injury were assessed. Results: HFD-fed mice exhibited hyperglycemia, insulin resistance, and dyslipidemia compared to those in the RD group (P<0.05). Kidney injury in these mice was indicated by an increase in the ratio of albumin to creatinine, glomerular hypertrophy, and the effacement of podocyte foot processes. Expression of intrarenal angiotensin-converting enzyme, angiotensin II type I receptor, nicotinamide adenine dinucleotide phosphate (NADPH) oxidase-4, and monocyte chemoattractant protein-1 was also markedly increasedin HFD-fed mice. HFD-fed mice exhibited elevated SBP that was accompanied by an increase in the wall thickness and vascularcross-sectional area (P<0.05), 12 weeks post-HFD consumption. Treatment with THU (100 mg/kg/day) suppressed intrarenal RASactivation, improved insulin sensitivity, and reduced SBP, thus, attenuating kidney injury in these mice. Conclusion: THU alleviated kidney injury in mice with HFD-induced type 2 diabetes, possibly by blunting the activation of the intrarenal RAS/nicotinamide adenine dinucleotide phosphate oxidase IV (NOX4)/monocyte chemoattractant protein 1 (MCP-1) axisand by lowering the high SBP.

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