{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,28]],"date-time":"2026-07-28T22:43:38Z","timestamp":1785278618670,"version":"3.55.0"},"reference-count":25,"publisher":"The Journal of Rheumatology","issue":"3","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J Rheumatol"],"published-print":{"date-parts":[[2012,3]]},"abstract":"<jats:sec><jats:title>Objective.<\/jats:title><jats:p>Renal involvement is frequently present in primary antineutrophil cytoplasmic antibody-associated small-vessel vasculitis (AAV) as well as propylthiouracil (PTU)-induced AAV. We analyzed the characteristics of patients with PTU-induced AAV with renal involvement and investigated the differences of the 2 diseases.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods.<\/jats:title><jats:p>Thirty-six patients with PTU-induced AAV, diagnosed from 1997 to 2010, were enrolled for study. Their data were compared with those of 174 patients with primary AAV diagnosed at the same time. Renal involvement was present in all patients.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results.<\/jats:title><jats:p>There was a prominent proportion of young women with PTU-induced AAV (p &lt; 0.01). They had lower levels of proteinuria and serum creatinine and higher estimated glomerular filtration rate (p &lt; 0.01, p &lt; 0.01, and p &lt; 0.01, respectively). Clinical immunological abnormalities were less severe in patients with PTU-induced AAV. Patients with PTU-induced AAV had less organ involvement and lower Birmingham Vasculitis Assessment Score than patients with primary AAV (p &lt; 0.01). Renal biopsies showed a lower proportion of glomeruli with crescents (p &lt; 0.01). Interstitial inflammation was less severe in patients with PTU-induced AAV (p &lt; 0.05). Similarly, interstitial fibrosis and tubular atrophy were less severe in patients with PTU-induced AAV (p &lt; 0.01, p &lt; 0.05, respectively). Renal survival and total survival were better in patients with PTU-associated vasculitis (p &lt; 0.05, p = 0.01).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion.<\/jats:title><jats:p>Clinical and histopathological abnormalities were less severe in patients with PTU-induced AAV and most of them had a good prognosis.<\/jats:p><\/jats:sec>","DOI":"10.3899\/jrheum.110931","type":"journal-article","created":{"date-parts":[[2012,1,16]],"date-time":"2012-01-16T01:23:11Z","timestamp":1326676991000},"page":"558-563","source":"Crossref","is-referenced-by-count":27,"title":["Propylthiouracil-induced Antineutrophil Cytoplasmic Antibody (ANCA)-associated Renal Vasculitis Versus Primary ANCA-associated Renal Vasculitis: A Comparative 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