Effect of Quercetin and its Derivatives on the Excretory Function of Rat Kidneys

The optimal diuretic doses of quercetin and rutin (5 mg/kg) and dihydroquercetin and hyperoside (1 mg/kg) were determined in experiments on white rats with a single intragastric administration. The mechanism of action of sodium quercetin and its derivatives on glomerular filtration and tubular transport was studied in acute experiments. Quercetin, dihydroquercetin, rutin, and hyperoside with a single intramuscular injection at the above doses contributed to an increase in diuresis, saluresis, creatinine clearance (except for rutin), and excreted sodium fraction by an average of 141%, 203%, 153%, and 189%, respectively (p < 0.05). Rutin also led to a decrease in the creatinine concentration index (by an average of 79%, p < 0.05). The diuretic furosemide with a single intramuscular injection at the threshold dose of 1 mg/kg increased diuresis, saluresis, and excreted sodium fraction (by an average of 187%, p < 0.05), like the effect of the quercetin derivatives; decreased the creatinine concentration index (by an average of 62%, p < 0.05); and did not affect creatinine clearance identically to the effect of rutin.