Independent Association between Hyperuricemia and Histopathological Parameters in Chinese Patients with Henöch-Schönlein Purpura Nephritis.

ABSTRACT

BACKGROUND: This study aimed to investigate the role of hyperuricemia in the development of histopathological changes in HSPN. METHODS: Clinical and laboratory data pertaining to 139 adult HSPN patients with and without elevated serum uric acid levels were retrospectively evaluated. There was a 14.4% prevalence of hyperuricemia in patients with HSPN. RESULTS: Patients with hyperuricemia had higher levels of cystatin C and urine ß2-microglobulin and lower levels of HDL-C in comparison to that in patients with normal serum uric acid levels (p < 0.05). Patients with hyperuricemia had higher scores of interstitial inflammation, tubular atrophy, interstitial fibrosis, glomerulosclerosis as compared to those normouricemic patients (p < 0.05). Serum uric acid was found to be correlated independently with the presence of interstitial inflammation, tubular atrophy, interstitial fibrosis, and glomerulosclerosis by multivariate analysis (p < 0.05). CONCLUSIONS: High serum uric acid may be independently correlated with the development of tubulointerstitial lesions as well as glomerulosclerosis in HSPN.