J Rheum Dis.  2011 Mar;18(1):26-31. 10.4078/jrd.2011.18.1.26.

The Effect of Hypouricemic Treatment on the Renal Function in Patients with Gout

Affiliations
  • 1Department of Medicine, The Graduate School, Yonsei University, Seoul, Korea.
  • 2Department of Internal Medicine, Seoul Paik Hospital, Inje University College of Medicine, Seoul, Korea.
  • 3Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.
  • 4Division of Rheumatology, Department of Internal Medicine, NHIC Ilsan Hospital, Goyang, Korea. chanheell@paran.com

Abstract


OBJECTIVE
Hyperuricemia is known as a risk factor that causes and worsens kidney diseases through a variety of mechanisms. Recent animal studies reported that the correction of hyperuricemia improved the renal function, but there have been few human studies. This study examined whether a hypouricemic treatment affects the renal function in Korean patients with gout.
METHODS
Two hundred sixty-seven gout patients who were prescribed uric acid lowering agents for more than 1 year were enrolled at the Division of Rheumatology in the National Health Insurance Corporation Ilsan Hospital and Yonsei University Severance Hospital from January 2005 to January 2010. The following were examined: the levels of serum uric acid and serum creatinine, the amount of 24-hour urine uric acid, glomerular filtration rate (GFR), and abdominal ultrasound findings at baseline and follow-up.
RESULTS
Mean age of the study subjects was 54.4+/-13.9 years. Two hundred forty-seven patients were male and 20 patients were female. The mean treatment duration was 35.0+/-19.5 months. Among the 267 patients, 219 and 19 patients received monotherapy with allopurinol and benzbromarone respectively, and 29 patients received combination therapy with allopurinol and benzbromarone. After the treatment with uric acid lowering agents, the serum uric acid and creatinine levels decreased significantly (8.05+/-1.96 mg/dL vs 6.16+/-1.46 mg/dL, p<0.001, 1.25+/-0.46 mg/dL vs 1.18+/-0.42 mg/dL, p=0.001, respectively) and the GFR increased significantly (74.4+/-27.0 mL/min/1.73 m3 vs 80.2+/-31.6 mL/min/1.73 m3, p<0.001).
CONCLUSION
Treatment with hypouricemic agents reduced the levels of serum uric acid and improved the renal function. These results suggest that a hypouricemic treatment might improve the kidney function in gout patients.

Keyword

Gout; Renal function; Hypouricemic treatment

MeSH Terms

Allopurinol
Animals
Benzbromarone
Creatinine
Female
Glomerular Filtration Rate
Gout
Humans
Hyperuricemia
Kidney
Kidney Diseases
Male
National Health Programs
Rheumatology
Risk Factors
Uric Acid
Allopurinol
Benzbromarone
Creatinine
Uric Acid

Figure

  • Figure 1. The changes in the serum uric acid levels were correlated with the changes in the serum creatinine levels after the treatment with hypouricemic agents (r=0.18, p=0.003).

  • Figure 2. The changes of serum uric acid levels were correlated with the changes in the creatinine clearance levels after the treatment with hypouricemic agents (r=−0.25, p<0.001).


Cited by  1 articles

Duration of Prophylactic Therapy Affects the Frequency of Gout Flare
Hyo Jin Choi, Seung Kak Shin, Mi Ryung Seo, Hee Jung Ryu, Han Joo Baek
J Rheum Dis. 2013;20(1):17-23.    doi: 10.4078/jrd.2013.20.1.17.


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