Dietary polyphenol caffeic acid (1) has been reported for various pharmacological activities. The aim of the current study was to investigate the effect of caffeic acid (1) on ethylene glycol-induced renal stones in rats. For the study, male Wistar rats were divided into seven groups; normal, pathological, and standard drug controls, and preventive and curative groups. Normal control group received drinking water for 8 weeks. Pathological, standard drug, preventive, and curative groups received 0.75% ethylene glycol in drinking water for the induction of calcium oxalate stone formation, along with the regular diet. Standard drug group received Urocit-K by gavage from day 1, while preventive and curative groups received caffeic acid (1) by gavage at doses of 20 and 40 mg/kg on day 1 and day 14, respectively. At the end of the experiment, urine analysis and kidney histopathology were performed. Real-time PCR was performed to evaluate the renal expression of the most important genes involved in urolithiasis, i.e., osteopontin, Tamm-Horsfall, prothrombin fragment 1, and bikunin genes. The results indicated that in both the preventive and curative groups, treatment of rats with caffeic acid (1) significantly regulated the altered biochemical parameters, along with the remarkable reduction of calcium oxalate deposits in the kidneys, as compared to the pathological group. Treatment with compound 1 also resulted in down-regulation of the osteopontin gene, and up-regulation of the prothrombin fragment 1, Tamm-Horsfall, and bikunin genes. These results suggest that caffeic acid (1) can be further investigated for the prevention, and treatment of kidney stones.
Urological Research – Springer Journals
Published: Jun 14, 2017
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