タナカ　リョウジロウ   Ryojiro Tanaka   田中　亮二郎    所属   川崎医科大学  医学部 臨床医学　小児科学    職種   特任教授
論文種別	原著
言語種別	英語
査読の有無	査読あり
表題	Biopsy timing and Oxford classification variables in childhood/adolescent IgA nephropathy.
掲載誌名	正式名：Pediatric nephrology (Berlin, Germany) 略　 称：Pediatr Nephrol ISSNコード：1432198X/0931041X
掲載区分	国外
巻・号・頁	30(2),pp.293-9
著者・共著者	Yuko Shima, Koichi Nakanishi, Taketsugu Hama, Masashi Sato, Hironobu Mukaiyama, Hiroko Togawa, Ryojiro Tanaka, Hiroshi Kaito, Kandai Nozu, Kazumoto Iijima, Norishige Yoshikawa
発行年月	2015/02
概要	BACKGROUND:Although the Oxford classification of IgA nephropathy appears valid, we found crescents were significantly related to renal outcome in our cohort, whereas segmental glomerulosclerosis (S) was not. The timing of renal biopsy may significantly affect the variables in the Oxford classification.METHOD:The relationship between biopsy timing and pathological variables (mesangial hypercellularity score [M], endocapillary hypercellularity [E], S, tubular atrophy/interstitial fibrosis [T], crescents, and global glomerulosclerosis [G]) was analyzed retrospectively in 250 children with IgA nephropathy.RESULTS:The median time from disease onset to renal biopsy was 5.1 months (interquartile range, 2.7-15.4). M (ρ = -0.26, P < 0.0001), E (ρ = -0.34, P < 0.0001), and crescents (ρ = -0.14, P = 0.023) showed significant negative correlations, and S (ρ = 0.15, P = 0.018) and G (ρ = 0.25, P < 0.0001) showed significant positive correlations with time to biopsy (Spearman test). M, E, and crescents differed significantly in renal biopsies obtained before and after 3 years from onset (Wilcoxon test). Most crescents (92.9 %) were cellular/fibrocellular and were acute lesions. As crescents formed early after disease onset and decreased over time, they may be prognostic for acute phase, but not for chronic phase disease.CONCLUSIONS:Renal biopsy timing may alter the significance of variables used in the Oxford classification.
DOI	10.1007/s00467-014-2862-z
PMID	24912604