スギヤマ　ヒトシ   杉山　斉    所属   川崎医療短期大学  教育部 医療介護福祉学科    職種   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	Podocyte autophagy is associated with foot process effacement and proteinuria in patients with minimal change nephrotic syndrome.
掲載誌名	正式名：PloS one 略　 称：PLoS One ISSNコード：19326203/19326203
掲載区分	国外
巻・号・頁	15(1),pp.e0228337
著者・共著者	Ogawa-Akiyama Ayu, Sugiyama Hitoshi, Kitagawa Masashi, Tanaka Keiko, Kano Yuzuki, Mise Koki, Otaka Nozomu, Tanabe Katsuyuki, Morinaga Hiroshi, Kinomura Masaru, Uchida Haruhito A, Wada Jun
担当区分	2nd著者,責任著者
発行年月	2020
概要	The role of autophagy in the regulation of human glomerular diseases is largely unknown. The current study aimed to demonstrate morphological evidence of autophagy and its association with the ultrastructural changes of podocytes and clinical data in patients with idiopathic nephrotic syndrome, a disease in which patients exhibit podocyte injury. The study population included 95 patients, including patients with glomerular disease (minimal change nephrotic syndrome [MCNS], n = 41; idiopathic membranous nephropathy [IMN], n = 37) and 17 control subjects who underwent percutaneous renal biopsy. The number of autophagic vacuoles and the grade of foot process effacement (FPE) in podocytes were examined by electron microscopy (EM). The relationships among the expression of autophagic vacuoles, the grade of FPE, and the clinical data were determined. Autophagic vacuoles were mainly detected in podocytes by EM. The microtubule-associated protein 1 light chain 3 (LC3)-positive area was co-localized with the Wilms tumor 1 (WT1)-positive area on immunofluorescence microscopy, which suggested that autophagy occurred in the podocytes of patients with MCNS. The number of autophagic vacuoles in the podocytes was significantly correlated with the podocyte FPE score (r = -0.443, p = 0.004), the amount of proteinuria (r = 0.334, p = 0.033), and the level of serum albumin (r = -0.317, p = 0.043) in patients with MCNS. The FPE score was a significant determinant for autophagy after adjusting for the age in a multiple regression analysis in MCNS patients (p = 0.0456). However, such correlations were not observed in patients with IMN or in control subjects. In conclusion, the results indicated that the autophagy of podocytes is associated with FPE and severe proteinuria in patients with MCNS. The mechanisms underlying the activation of autophagy in association with FPE in podocytes should be further investigated in order to elucidate the pathophysiology of MCNS.
DOI	10.1371/journal.pone.0228337
PMID	31978139