Bowman’s capsule rupture and the Oxford MEST-C score in adult patients with Immunoglobulin a vasculitis nephritis: a single center experience
Creators: name: Zhao, Qing
name: Duan, Tongyue
name: Chen, Anqun
name: He, Liyu
name: Liu, Hong
name: Yuan, Shuguang
name: Tang, Chengyuan
name: Liu, Yinghong
name: Liu, Yu
name: Liu, Fuyou
name: Xiao, Li
name: Zhu, Xuejing
name: Sun, Lin
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Marine Biology
subject: Cancer
subject: Hematology

description: Bowman’s capsule rupture (BCR) is a glomerular pathological change, but it is still not well recognized in immunoglobulin A vasculitis nephritis (IgAV-N). The Oxford MEST-C score is a classification for IgA nephropathy; however, its clinical correlation and prognostic value in adult patients with IgAV-N are unclear. A retrospective study of 145 adult patients with IgAV-N diagnosed by renal biopsy was conducted. Clinical manifestations, pathological changes and the prognosis of IgAV-N patients were compared depending on the presence or absence of BCR, International Study of Kidney Disease in Children (ISKDC) classification and MEST-C score. The primary endpoint events were end-stage renal disease, renal replacement therapy and all-cause death. In total, 51 of 145 (35.17%) patients with IgAV-N presented with BCR. Patients with BCR had more proteinuria, lower serum albumin, and more crescents. Compared with IgAV-N patients with crescents only, 51/100 patients with crescents combined with BCR had a higher proportion of crescents in all glomeruli (15.79% vs. 9.09%; <i>p</i> = 0.003). Patients with higher ISKDC grades had more severe clinical presentation, but it did not reflect the prognosis. However, the MEST-C score not only reflected clinical manifestations but also predicted prognosis (<i>p</i> &lt; 0.05). BCR contributed to the effectiveness of the MEST-C score in predicting the prognosis of IgAV-N (C-index: 0.845 to 0.855). BCR is associated with clinical manifestations and pathological changes in patients with IgAV-N. The ISKDC classification and MEST-C score are related to the patient’s condition, but only the MEST-C score is correlated with the prognosis of patients with IgAV-N, while BCR can improve its predictive ability. BCR was associated with clinical manifestations and pathological changes in patients with IgAV-N, particularly crescents.The ISKDC classification was related to clinical manifestations of patients with IgAV-N, but it wasn’t associated with prognosis.The Oxford MEST-C score was correlated to clinical presentations and prognosis of patients with IgAV-N, while BCR can improve its predictive ability. BCR was associated with clinical manifestations and pathological changes in patients with IgAV-N, particularly crescents. The ISKDC classification was related to clinical manifestations of patients with IgAV-N, but it wasn’t associated with prognosis. The Oxford MEST-C score was correlated to clinical presentations and prognosis of patients with IgAV-N, while BCR can improve its predictive ability.