aleglitazar and Diabetic-Nephropathies

Type 2 diabetes is a major risk factor for chronic kidney disease, which substantially increases the risk of cardiovascular disease mortality. This Phase IIb safety study (AleNephro) in patients with stage 3 chronic kidney disease and type 2 diabetes, evaluated the renal effects of aleglitazar, a balanced peroxisome proliferator-activated receptor-α/γ agonist.. Patients were randomized to 52 weeks' double-blind treatment with aleglitazar 150 μg/day (n=150) or pioglitazone 45 mg/day (n=152), followed by an 8-week off-treatment period. The primary endpoint was non-inferiority for the difference between aleglitazar and pioglitazone in percentage change in estimated glomerular filtration rate from baseline to end of follow-up. Secondary endpoints included change from baseline in estimated glomerular filtration rate and lipid profiles at end of treatment.. Mean estimated glomerular filtration rate change from baseline to end of follow-up was -2.7% (95% confidence interval: -7.7, 2.4) with aleglitazar versus -3.4% (95% confidence interval: -8.5, 1.7) with pioglitazone, establishing non-inferiority (0.77%; 95% confidence interval: -4.5, 6.0). Aleglitazar was associated with a 15% decrease in estimated glomerular filtration rate versus 5.4% with pioglitazone at end of treatment, which plateaued to 8 weeks and was not progressive. Superior improvements in high-density lipoprotein cholesterol, low-density lipoprotein cholesterol and triglycerides, with similar effects on glycosylated hemoglobin were observed with aleglitazar versus pioglitazone. No major safety concerns were identified.. The primary endpoint in AleNephro was met, indicating that in stage 3 chronic kidney disease patients with type 2 diabetes, the decrease in estimated glomerular filtration rate after 52 weeks' treatment with aleglitazar followed by 8 weeks off-treatment was reversible and comparable (non-inferior) to pioglitazone.. NCT01043029 January 5, 2010.

Topics: Aged; Diabetes Mellitus, Type 2; Diabetic Nephropathies; Double-Blind Method; Dyslipidemias; Female; Glomerular Filtration Rate; Glycated Hemoglobin; Humans; Hypoglycemic Agents; Hypolipidemic Agents; Kidney; Male; Middle Aged; Oxazoles; Pioglitazone; PPAR alpha; PPAR gamma; Renal Insufficiency, Chronic; Therapeutic Equivalency; Thiazolidinediones; Thiophenes

To evaluate the effects of aleglitazar, a dual peroxisome proliferator-activated receptor-α/γ agonist, on the development of diabetes-related organ dysfunction, in relation to glycaemic and lipid changes, in Zucker diabetic fatty (ZDF) rats.. Six-week-old, male ZDF rats received aleglitazar 0.3 mg/kg/day or vehicle as food admix for 13 weeks (n = 10 per group). Age-matched male Zucker lean rats served as non-diabetic controls. Plasma and renal markers were measured at several time points. Histopathology and quantitative immunohistochemistry were performed at 13 weeks.. Glycated haemoglobin (5.4 vs. 9.2%) and blood glucose (8.3 ± 0.3 vs. 26.1 ± 1.0 mmol/l) were significantly reduced at 12 weeks with aleglitazar versus vehicle-treated ZDF rats (both p < 0.01), while aleglitazar preserved near-normal plasma insulin levels. Aleglitazar prevented the development of hypertriglyceridaemia (1.4 ± 0.1 vs. 8.5 ± 0.9 mmol/l) and reduced plasma non-esterified fatty acids (0.09 ± 0.02 vs. 0.26 ± 0.04 mmol/l) relative to vehicle-treated animals (both p < 0.01). Urinary glucose and protein concentrations were significantly reduced at 13 weeks with aleglitazar versus vehicle-treated rats (both p < 0.01). Consistent with its effect on glycaemic control, aleglitazar protected β-cell morphology, as evidenced by preservation of islet integrity, and reduction of β-cell apoptosis and islet fibrosis. Aleglitazar prevented renal glomerular hypertrophy, podocyte degeneration, glomerulosclerosis, tubulo-interstitial lesions and development of cataracts.. Aleglitazar strongly improved glycaemic and lipid parameters while protecting key tissues, including the pancreas, kidneys and eyes, against diabetes-associated structural and functional changes in the ZDF rat.

Topics: Animals; Blood Glucose; Cataract; Diabetic Nephropathies; Glucose Tolerance Test; Glycated Hemoglobin; Hypoglycemic Agents; Immunohistochemistry; Insulin; Islets of Langerhans; Male; Oxazoles; PPAR alpha; PPAR gamma; Rats; Rats, Zucker; Thiophenes