Authors: Hiroyuki Wakiguchi Syuji Takei Tomohiro Kubota Akinori Miyazono Yoshifumi Kawano
Publish Date: 2016/11/30
Volume: 36, Issue: 2, Pages: 433-437
Abstract
Lupus nephritis is identified in up to 75 of patients with juvenile systemic lupus erythematosus and may present with abnormal urinary findings overt lupus nephritis or be apparent only upon renal biopsy silent lupus nephritis We investigated whether serum complement levels correlate with renal pathology in pediatric patients with silent lupus nephritis We performed baseline renal biopsy in 45 children diagnosed with juvenile systemic lupus erythematosus who were admitted to Kagoshima University Hospital between January 2000 and June 2015 Patients were classified as having overt or silent lupus nephritis based on urinary findings at renal biopsy Silent lupus nephritis was identified in 555 25/45 of cases Of these 6 133 were classified as class III nephritis according to the International Society of Nephrology/Renal Pathology Society criteria Decreased serum C3 levels were associated with the renal pathology classification for patients with silent but not with overt lupus nephritis No differences in serum C4 levels were identified between cases of silent and overt lupus nephritis Baseline renal biopsy is a critical component of the workup of juvenile systemic lupus erythematosus as treatable renal pathology may be present in the absence of urinary signs Serum C3 may be an important marker of the progression of silent lupus nephritisWe sincerely thank our volunteers for their participation in this study We thank StaGen for the expert assistance with statistical analysis and Editage for English language editing We also thank the following Dr Satoshi Hisano Department of Pathology Faculty of Medicine Fukuoka University Fukuoka Japan for performing the renal pathology studies Dr Masaki Shimizu Department of Pediatrics School of Medicine Institute of Medical Pharmaceutical and Health Sciences Kanazawa University Kanazawa Japan for the helpful discussions and Drs Yasuhito Nerome Yuichi Yamasaki Yukiko Nonaka Tsuyoshi Yamatou Hiroyuki Imanaka Tomoko Takezaki and Harumi Akaike Department of Pediatrics Kagoshima University Graduate School of Medical and Dental Sciences Kagoshima Japan for the clinical assistance
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