Effects of gum arabic (Acacia senegal) on renal function in diabetic mice.
2012
Background/Aims: Gum arabic (GA) is a Ca2+-, Mg2+- and K+-rich dietary fiber used for the treatment of patients with chronic kidney disease in Middle Eastern countries. In healthy mice, GA treatment increases creatinine clearance, renal ADH excretion, as well as intestinal and renal excretion of Mg2+ and Ca2+. GA decreases plasma Pi concentration, urinary Pi and Na+ excretion. The present study explored the effects of GA on renal function in diabetic mice. Methods: Metabolic cage experiments were performed on Akita mice (akita+/–), which spontaneously develop insulin deficiency and thus hyperglycemia. Plasma and urinary concentrations of Na+, K+ and Ca2+ were measured by flame photometry (AFM 5051, Eppendorf, Germany), creatinine by the Jaffe method, phosphate photometrically, urea by an enzymatic method, glucose utilizing a glucometer and an enzymatic kit, aldosterone using an RIA, urinary albumin fluorometrically, and blood pressure by the tail-cuff method. Results: GA (10% in drinking water) significantly increased urinary excretion of Ca2+ and significantly decreased plasma phosphate and urea concentrations, urinary flow rate, urinary Na+, phosphate and glucose excretion, blood pressure and proteinuria. Conclusions: GA treatment decreases blood pressure and proteinuria in diabetic mice and may thus prove beneficial in diabetic nephropathy.
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