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Enhanced resolution of interstitial fibrosis in pediatric renal allograft biopsies using image analysis of trichrome stain
Author(s) -
Birk Patricia E.,
Gill John S.,
BlydtHansen Tom D.,
Gibson Ian W.
Publication year - 2010
Publication title -
pediatric transplantation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.457
H-Index - 69
eISSN - 1399-3046
pISSN - 1397-3142
DOI - 10.1111/j.1399-3046.2010.01376.x
Subject(s) - medicine , urology , transplantation , trichrome stain , biopsy , masson's trichrome stain , pathology , renal transplant , fibrosis , stain , staining , immunohistochemistry
Birk PE, Gill JS, Blydt‐Hansen TD, Gibson IW. Enhanced resolution of interstitial fibrosis in pediatric renal allograft biopsies using image analysis of trichrome stain.
Pediatr Transplantation 2010: 14: 925–930. © 2010 John Wiley & Sons A/S. Abstract: The Banff classification is ill suited to detect subtle histologic progression in renal allografts. We present image analysis methodology to precisely quantify IF in pediatric renal allograft biopsies routinely stained with MT. The mean area %IF was determined in 105 pediatric renal allograft biopsies. Associations between %IF or Banff ci scores and estimated GFR were determined using GEE modeling. Logistic regression was used to estimate IF progression. Percent IF (mean ± s.d.) was 6.83% ± 3.94, 10.39 ± 5.23%, and 20.53 ± 8.74 in patients with ci0, ci1, and ci2, respectively. The difference in %IF between biopsies with ci0, ci1, and ci2 was not proportionately incremental: compared to ci2, ci0 had 67% less IF (p < 0.0001), while ci1 had 48% less IF (p < 0.0001). AR had no impact on the precision of %IF measurements. Each 0.5% decrement in %IF was associated with a 1 mL/min per 1.73 m 2 increase in GFR (p < 0.004). Histologic progression was demonstrated by increasing %IF values (p < 0.0001) and could be estimated by IF = 2.61 × (months) + 6.43. This readily adaptable methodology may be used for the longitudinal assessment of IF in pediatric protocol renal allograft biopsies.