FGF23 and chronic kidney disease: Quercetin reduced the levels of FGF23, PTH, inorganic phosphate and urinary protein-to-creatinine ratios and urinary uric acid, creatinine and blood urea nitrogen, as well as increasing the expression of serum lactate dehydrogenase (LDH), SOD and total antioxidant activity, in an adenine-induced CKD rat model [129].