Losartan and Uric Acid Metabolism in Children With Proteinuric Nephropathies

Summary

The aim of this study is to assess the serum uric-acid lowering effect of losartan in children with proteinuric nephropathies. Patients already treated with enalapril will be randomized to receive losartan and/or enalapril in a cross-over designed study. Those who recruit the inclusion criteria will receive enalapril and/or losartan during a one month period, followed by a 15 days of wash out (under enalapril treatment). On day 46, the second period of 30 days of treatment start (enalapril or losartan, whichever was not received initially). Before randomization, a baseline 24 hours urine and a fasting blood sample will be obtained to assess uric acid excretion and serum uric acid values along with renal function and electrolyte levels. Then, similar determinations will be performed at days 30, 46 and 76.

Timeline

Start

2022-07-01

Primary completion

2023-12-31

Completion

2024-01-01

Publications

• Results Park JH, Jo YI, Lee JH. Renal effects of uric acid: hyperuricemia and hypouricemia. Korean J Intern Med. 2020 Nov;35(6):1291-1304. doi: 10.3904/kjim.2020.410. Epub 2020 Sep 9.
• Results Wuhl E, Schaefer F. Therapeutic strategies to slow chronic kidney disease progression. Pediatr Nephrol. 2008 May;23(5):705-16. doi: 10.1007/s00467-008-0789-y. Epub 2008 Mar 12.
• Results Weaver DJ Jr. Uric acid and progression of chronic kidney disease. Pediatr Nephrol. 2019 May;34(5):801-809. doi: 10.1007/s00467-018-3979-2. Epub 2018 Jun 21.
• Results Sutton Burke EM, Kelly TC, Shoales LA, Nagel AK. Angiotensin Receptor Blockers Effect on Serum Uric Acid-A Class Effect? J Pharm Pract. 2020 Dec;33(6):874-881. doi: 10.1177/0897190019866315. Epub 2019 Aug 7.
• Results Bryant CE, Rajai A, Webb NJA, Hogg RJ. Effects of losartan and enalapril on serum uric acid and GFR in children with proteinuria. Pediatr Nephrol. 2021 Oct;36(10):3211-3219. doi: 10.1007/s00467-021-05045-4. Epub 2021 Apr 21.
• Results Hamada T, Ichida K, Hosoyamada M, Mizuta E, Yanagihara K, Sonoyama K, Sugihara S, Igawa O, Hosoya T, Ohtahara A, Shigamasa C, Yamamoto Y, Ninomiya H, Hisatome I. Uricosuric action of losartan via the inhibition of urate transporter 1 (URAT 1) in hypertensive patients. Am J Hypertens. 2008 Oct;21(10):1157-62. doi: 10.1038/ajh.2008.245. Epub 2008 Jul 31.
• Results Kubota M. Hyperuricemia in Children and Adolescents: Present Knowledge and Future Directions. J Nutr Metab. 2019 May 2;2019:3480718. doi: 10.1155/2019/3480718. eCollection 2019.
• Results Dang A, Zhang Y, Liu G, Chen G, Song W, Wang B. Effects of losartan and irbesartan on serum uric acid in hypertensive patients with hyperuricaemia in Chinese population. J Hum Hypertens. 2006 Jan;20(1):45-50. doi: 10.1038/sj.jhh.1001941.
• Results Wurzner G, Gerster JC, Chiolero A, Maillard M, Fallab-Stubi CL, Brunner HR, Burnier M. Comparative effects of losartan and irbesartan on serum uric acid in hypertensive patients with hyperuricaemia and gout. J Hypertens. 2001 Oct;19(10):1855-60. doi: 10.1097/00004872-200110000-00021.

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