title: Lithospermic acid B ameliorates the development of diabetic nephropathy in OLETF rats.
abstract: Lithospermic acid B (LAB), an active component isolated from Salvia miltiorrhizae, has been reported to have renoprotective effects in type 1 diabetic animal models. In the present study we investigated the effects of LAB on the prevention of diabetic nephropathy in type 2 diabetic Otsuka Long-Evans-Tokushima Fatty (OLETF) rats. LAB (20 mg/kg) was given orally once daily to 10-week-old male OLETF rats for 28 weeks. Treatment of OLETF rats with LAB had little effects on body weight and blood glucose levels. Treatment with LAB resulted in significant reduction in blood pressure. LAB markedly attenuated albuminuria and significantly lowered levels of lipid peroxidation, monocyte chemoattractant protein-1 (MCP-1), and transforming growth factor-beta (TGF-beta1) expression in renal tissues of OLETF rats. In addition, LAB inhibited the progression of glomerular hypertrophy, mesangial expansion, and expansion of the extracellular matrix in the renal cortex. Collectively, these results suggest that LAB has beneficial effects on the diabetic nephropathy in OLETF rats by decreasing blood pressure, oxidative stress, and MCP-1 expression. Our results suggest that LAB might be a new therapeutic agent for the prevention of nephropathy in type 2 diabetes.
authors.affiliation: Division of Endocrinology and Metabolism, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea.
authors.forename: Eun Seok
authors.initials: ES
authors.lastname: Kang
authors.forename: Geun Taek
authors.initials: GT
authors.lastname: Lee
authors.forename: Beom Seok
authors.initials: BS
authors.lastname: Kim
authors.forename: Chul Hoon
authors.initials: CH
authors.lastname: Kim
authors.forename: Gi Ho
authors.initials: GH
authors.lastname: Seo
authors.forename: Seung Jin
authors.initials: SJ
authors.lastname: Han
authors.forename: Kyu Yeon
authors.initials: KY
authors.lastname: Hur
authors.forename: Chul Woo
authors.initials: CW
authors.lastname: Ahn
authors.forename: Hunjoo
authors.initials: H
authors.lastname: Ha
authors.forename: Mankil
authors.initials: M
authors.lastname: Jung
authors.forename: Young Soo
authors.initials: YS
authors.lastname: Ahn
authors.forename: Bong Soo
authors.initials: BS
authors.lastname: Cha
authors.forename: Hyun Chul
authors.initials: HC
authors.lastname: Lee
mesh_terms: D000284:Administration, Oral; D000449:Aldehyde Reductase / Q000037:antagonists & inhibitors*; D000818:Animals; D001572:Benzofurans / Q000302:isolation & purification / Q000494:pharmacology*; D001786:Blood Glucose / Q000187:drug effects; D001794:Blood Pressure / Q000187:drug effects; D018932:Chemokine CCL2 / Q000187:drug effects / Q000235:genetics; D053630:Depsides / Q000302:isolation & purification / Q000494:pharmacology*; D003924:Diabetes Mellitus, Type 2 / Q000150:complications*; D003928:Diabetic Nephropathies / Q000517:prevention & control*; D005786:Gene Expression Regulation / Q000187:drug effects; D008297:Male; D018384:Oxidative Stress / Q000187:drug effects; D051381:Rats; D020334:Rats, Inbred OLETF; D020318:Rats, Long-Evans; D027561:Salvia miltiorrhiza / Q000737:chemistry
chemical_list: D001572:Benzofurans; D001786:Blood Glucose; D018932:Chemokine CCL2; D053630:Depsides; C076944:salvianolic acid B; D000449:Aldehyde Reductase