Orally active, species-independent novel A(3) adenosine receptor antagonist protects against kidney injury in db/db mice
- 주제(기타) Biochemistry & Molecular Biology; Medicine, Research & Experimental
- 설명문(일반) [Dorotea, Debra; Cho, Ahreum; Lee, Gayoung; Kwon, Guideock; Lee, Junghwa; Ha, Hunjoo] Ewha Womans Univ, Grad Sch Pharmaceut Sci, Coll Pharm, Seoul, South Korea; [Sahu, Pramod K.; Jeong, Lak Shin] Seoul Natl Univ, Dept Pharm, Coll Pharm, Seoul, South Korea; [Sahu, Pramod K.] Future Med Co, Seoul, South Korea; [Cha, Dae Ryong] Korea Univ, Dept Nephrol, Ansan Hosp, Ansan, South Korea
- 발행기관 NATURE PUBLISHING GROUP
- 발행년도 2018
- URI http://www.dcollection.net/handler/ewha/000000151549
- 본문언어 영어
- Published As http://dx.doi.org/10.1038/s12276-018-0053-x
- 저작권 이화여자대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
Diabetic kidney disease (DKD) is the leading cause of end-stage kidney disease, and the current pharmacological treatment for DKD is limited to renin-angiotensin system (RAS) inhibitors. Adenosine is detectable in the kidney and is significantly elevated in response to cellular damage. While all 4 known subtypes of adenosine receptors, namely, A1AR, A(2a)AR, A(2b)AR, and A(3)AR, are expressed in the kidney, our previous study has demonstrated that a novel, orally active, species-independent, and selective A(3)AR antagonist, LJ-1888, ameliorates unilateral ureteral obstruction-induced tubulointerstitial fibrosis. The present study examined the protective effects of LJ-2698, which has higher affinity and selectivity for A(3)AR than LJ-1888, on DKD. In experiment I, dose-dependent effects of LJ-2698 were examined by orally administering 1.5, 5, or 10 mg/kg for 12 weeks to 8-week-old db/db mice. In experiment II, the effects of LJ-2698 (10 mg/kg) were compared to those of losartan (1.5 mg/kg), which is a standard treatment for patients with DKD. LJ-2698 effectively prevented kidney injuries such as albuminuria, glomerular hypertrophy, tubular injury, podocyte injury, fibrosis, inflammation, and oxidative stress in diabetic mice as much as losartan. In addition, inhibition of lipid accumulation along with increases in PGC1 alpha, a master regulator of mitochondrial biogenesis, were demonstrated in diabetic mice treated with either LJ-2698 or losartan. These results suggest that LJ-2698, a selective A(3)AR antagonist, may become a novel therapeutic agent against DKD.
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