Transformation of interstitial fibroblasts and tubulointerstitial fibrosis in diabetic nephropathy

被引:73
作者
Ina K. [2 ]
Kitamura H. [2 ]
Tatsukawa S. [2 ]
Takayama T. [2 ]
Fujikura Y. [2 ]
Shimada T. [1 ]
机构
[1] Department of Health Sciences, School of Nursing, Oita Medical University, Oita
[2] Department of Anatomy, Oita Medical University, Oita 879-5593, 1-1 Idaigaoka, Hasama-machi
来源
Medical Electron Microscopy | 2002年 / 35卷 / 2期
关键词
Diabetic nephropathy; Myofibroblast; Transforming growth factor (TGF)-β; Tubulointerstitial fibrosis;
D O I
10.1007/s007950200011
中图分类号
学科分类号
摘要
The developmental mechanism of tubulointerstitial fibrosis in diabetic nephropathy (DN) has not been elucidated. Tubulointerstitial fibrosis, as well as glomerulosclerosis, occurs in DN. Myofibroblasts which overproduce extracellular matrix are present in the renal interstitium in diabetics, although they are almost never seen in normal kidneys. The myofibroblasts appear to originate from interstitial fibroblasts. In addition, transforming growth factor-β1 (TGF-β1), which can evoke myofibroblast transformation, is detected in interstitial cells in the diabetic kidney, but not in the normal kidney. Taken together, these findings led us to speculate that TGF-β1 induces the transformation of interstitial fibroblasts into myofibroblasts, followed by tubulointerstitial fibrosis. Based on this speculation, we discuss the developmental mechanism of tubulointerstitial fibrosis in this review.
引用
收藏
页码:87 / 95
页数:8
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