碱性成纤维细胞生长因子对大鼠实验性肾小管损伤和间质病变的作用

研究碱性成纤维细胞生长因子在大鼠肾小管损伤,再生以及肾间质病变过程中的作用。方法应用Ｎｏｒｔｈｅｒｎ印迹杂交,原位杂交及免疫组织化学ＳＰ方法,观察在大鼠的庆大霉素中毒肾小管损伤和再生过程,。ｂＦＧＦ及其受体表达的情况,＾３Ｈ－ＴｄＲ掺入法检测ｂＦＧＦ对培养的肾小管上皮细胞和肾间质成纤维细胞增殖的影响。结果肾小管上皮细胞损伤和再生过程中,ｂＦＧＦ ｍＲＮＡ有表达,随着修昨的增强,表达量逐渐增高;同时

The role of bFGF in renal tubular injury and the interstitial lesion

Objective The role of bFGF in renal tubular injury, regeneration and interstitial lesion of rats was studied. Methods The renal tubular injury model of rat was induced by intraperitoneal injection of gentamicin. The expression of bFGF and FGFR1 was examined by Northern blot, in situ hybridization and immunohistochemistry. 3H TdR incorporation was used to detect the role of bFGF in promoting the proliferation of renal tubular epithelial cells and renal fibroblasts. Results The expression of bFGF mRNA and protein synthesis of bFGF and FGFR1 increased during the process of injury and regeneration of tubular epithelial cells . In contrast, normal tubular epithelium failed to express bFGF, except renal interstitial fibroblasts and monocytes/macrophages. bFGF promoted proliferation of renal tubular epithelium as well as renal interstitial fibroblasts. Conclusion bFGF is secreted by tubular epithelial cells damaged by nephrotoxicity of gentamicin, and FGFR1 expressed in damaged renal tubules and interstitial fibroblasts. bFGF not only can promote tubular epithelia to proliferate, but can also stimulate interstitial fibroblasts to proliferate. Correlation exists between bFGF, renal tubular injury and interstitial lesions.