ELEVATED LEVELS OF PDGF-ALPHA RECEPTORS IN KELOID FIBROBLASTS CONTRIBUTE TO AN ENHANCED RESPONSE TO PDGF

被引:105
作者
HAISA, M [1 ]
OKOCHI, H [1 ]
GROTENDORST, GR [1 ]
机构
[1] UNIV MIAMI,SCH MED,DEPT CELL BIOL & ANAT R-124,MIAMI,FL 33136
关键词
PLATELET-DERIVED GROWTH FACTOR; EPIDERMAL GROWTH FACTOR; FIBROBLAST GROWTH FACTOR;
D O I
10.1111/1523-1747.ep12396856
中图分类号
R75 [皮肤病学与性病学];
学科分类号
100206 ;
摘要
Despite a number of studies, the etiology of keloids remains unknown. We have investigated the response of fibroblasts derived from keloid tissue and normal adult skin to platelet-derived growth factor (PDGF), epidermal growth factor (EGF), and fibroblast growth factor (FGF). Keloid fibroblasts were more responsive in both chemotactic and mitogenic assays to all three isoforms of PDGF than fibroblasts from normal skin. No enhanced response of the cells to either EGF or FGF was detected. The enhanced PDGF response of keloid fibroblasts appears to be mediated by elevated levels of PDGF alpha receptors, which are 4-5 times higher than those in normal human skin fibroblasts.
引用
收藏
页码:560 / 563
页数:4
相关论文
共 40 条