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Orally active, species-independent novel A 3 adenosine receptor antagonist protects against kidney injury in db/db mice.
- Source :
-
Experimental & molecular medicine [Exp Mol Med] 2018 Apr 20; Vol. 50 (4), pp. 1-14. Date of Electronic Publication: 2018 Apr 20. - Publication Year :
- 2018
-
Abstract
- 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, A <subscript>1</subscript> AR, A <subscript>2a</subscript> AR, A <subscript>2b</subscript> AR, and A <subscript>3</subscript> AR, are expressed in the kidney, our previous study has demonstrated that a novel, orally active, species-independent, and selective A <subscript>3</subscript> 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 <subscript>3</subscript> 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 PGC1α, 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 <subscript>3</subscript> AR antagonist, may become a novel therapeutic agent against DKD.
- Subjects :
- Administration, Oral
Animals
Diabetic Nephropathies metabolism
Diabetic Nephropathies pathology
Dose-Response Relationship, Drug
Male
Mice
Ureteral Obstruction metabolism
Ureteral Obstruction pathology
Adenosine pharmacology
Adenosine A3 Receptor Agonists pharmacology
Diabetic Nephropathies drug therapy
Kidney injuries
Kidney metabolism
Kidney pathology
Receptor, Adenosine A3
Ureteral Obstruction drug therapy
Subjects
Details
- Language :
- English
- ISSN :
- 2092-6413
- Volume :
- 50
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Experimental & molecular medicine
- Publication Type :
- Academic Journal
- Accession number :
- 29674631
- Full Text :
- https://doi.org/10.1038/s12276-018-0053-x