Renal lesions in leptin receptor-deficient medaka (Oryzias latipes).

Renal lesions in leptin receptor-deficient medaka (Oryzias latipes). J Toxicol Pathol. 2019 Oct;32(4):297-303 Authors: Chisada S, Sugiyama A Abstract The aim of this study was to elucidate the renal lesions of leptin receptor-deficient medaka showing hyperglycemia and hypoinsulinemia and to evaluate the usefulness of the medaka as a model of diabetic nephropathy. Leptin receptor-deficient medaka at 20 and 30 weeks of age showed hyperglycemia and hypoinsulinemia; they also showed a higher level of plasma creatinine than the control medaka. Histopathologically, dilation of glomerular capillary lumina and of afferent/efferent arterioles was observed in leptin receptor-deficient medaka at 20 weeks of age, and then glomerular enlargement with cell proliferation and matrix expansion, formation of fibrin cap-like lesions, glomerular atrophy with Bowman's capsule dilation, and renal tubule dilation were observed at 30 weeks of age. These histopathological characteristics of leptin receptor-deficient medaka were similar to the characteristics of kidney lesions of human and rodent models of type II diabetes mellitus, making leptin receptor-deficient medaka a useful model of diabetic nephropathy. PMID: 31719758 [PubMed]
Source: Journal of Toxicologic Pathology - Category: Toxicology Tags: J Toxicol Pathol Source Type: research