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肾间质细胞
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  renal interstitial cells
    Ultrastructures in renal interstitial cells of two groups of different-aged rats were observed in this paper. The results showed that there were changes with age in renal interstitial cells between two groups,Those charges mainly appear as an increase in the number of cells, cytoplasmic processes organelles, and in cytoplasm, in the adult group,The narrowness of perinuclear cisternae
    本文观察了二组不同年龄大鼠肾间质细胞的超微结构,结果表明,肾间质细胞有增龄变化,主要包括:细胞数量、胞质、胞质突起、细胞器增多,核周池缩小。
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    in addition, interstitial celIs widely expressed bFGF and FGFR- 1, their degree ofexpression accorded with PCNA expression in these cells and with collagen III deposition in thetubulointerstitium. It suggested that injury to tubular cells enhenced the secretion of bFGF and FGFR- 1.bFGFprobably promoted the regeneration of injured tubular celIs,the proliferation of interstitial cells and the synthzsisof collagen III through autocrine and/or paracrine mechanism, and thus accelerated the fibrosis of the renalinterstitium.
    肾间质细胞广泛表达bFGF和FGFR-1,而且此表达程度和间质细胞核增殖及小管间质Ⅲ型胶元沉积程度一致.本实验证实肾小管损伤刺激bFGF、FGFR-1的分泌,提示bFGF可能通过自分泌和(或)旁分泌机制促进肾小管上皮的再生修复、间质细胞的增殖及Ⅲ型胶元的合成,从而促进肾小管间质纤维化的形成。
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  renal interstitial cells
On the enzyme histochemistry of the renal interstitial cells
      
A histochemical study of the renal interstitial cells demonstrates the absence of two of the principal enzymes involved in the citric acid cycle, the cells thus seem to lack the ability to break down fatty acids.
      
On the other hand the renal interstitial cells demonstrate enzyme activity which could be indirect evidence of fatty acid synthesis.
      
Renal interstitial cells play an important role in renal function and renal diseases.
      
We describe the morphology of renal interstitial cells in the healthy kidney.
      
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Ultrastructures in renal interstitial cells of two groups of different-aged rats were observed in this paper.The results showed that there were changes with age in renal interstitial cells between two groups,Those charges mainly appear as an increase in the number of cells, cytoplasmic processes organelles, and in cytoplasm, in the adult group,The narrowness of perinuclear cisternae

本文观察了二组不同年龄大鼠肾间质细胞的超微结构,结果表明,肾间质细胞有增龄变化,主要包括:细胞数量、胞质、胞质突起、细胞器增多,核周池缩小。

Objective To investigate the way of interstitial cell loss and its possible relation to Fas expression during the course of renal interstitial fibrosis. Methods The model was induced by unilateral ureteral ligation in rats and the rats were sacrificed at postoperative days 3, 7, 14, 28, 56, and 84. Besides routine morphologic examinations, interstitial collagen type Ⅲ and Fas expression was detected by immunohistochemistry staining and apoptotic cells were determined by terminal deoxynucleotidyl transferase...

Objective To investigate the way of interstitial cell loss and its possible relation to Fas expression during the course of renal interstitial fibrosis. Methods The model was induced by unilateral ureteral ligation in rats and the rats were sacrificed at postoperative days 3, 7, 14, 28, 56, and 84. Besides routine morphologic examinations, interstitial collagen type Ⅲ and Fas expression was detected by immunohistochemistry staining and apoptotic cells were determined by terminal deoxynucleotidyl transferase mediated dUTP nick end labeling(TUNEL). Results Both of the Fas expression and the apoptotic cells in the renal interstitium were continuously increased from day 14 to the end of experiment, with a parallel increase of the interstitial fibrosis. There was a positive correlation between the Fas expression and apoptotic cells in renal interstitium( r=0 94, P<0 05). Conclusion The apoptosis in this model may be pathogenetically related to interstitial cell loss in the course of renal interstitial fibrosis and the apoptosis is probably mediated by Fas/FasL system.

目的 探讨肾间质纤维化形成过程中的肾间质细胞凋亡及其与Fas 表达的关系。方法 建立大鼠单侧输尿管梗阻模型,分别于模型3 天、7 天、14 天、28 天、56 天和84 天处死大鼠。除光镜、电镜观察外,免疫组织化学染色检测胶原Ⅲ和Fas 蛋白表达,末端转移酶介导的dUTP缺口末端标记法检测凋亡细胞。用病理分析软件对肾间质Fas 表达和细胞凋亡进行定量分析。结果 该模型显示进行性的肾间质纤维化。模型14 天后,肾间质Fas 表达阳性率递增,肾间质凋亡细胞亦逐渐增加,且2 者成正相关( r =0-94,P<0-05)。结论 细胞凋亡可能为该模型中肾间质细胞丢失的原因,且Fas/FasL系统可能介导了该细胞凋亡。

The relationship between the expression of bFGF, FGFR-1 and renal tubulointerstitial fibrosis wasinvestigated by using immunohistochemistry and in situ hybridization techniques in thirty rat renaltubulointerstitial fibrosis models. The results showed that injured tubular cells excessively synthesized bFGF,FGFR- 1 and collagen IH; in addition, interstitial celIs widely expressed bFGF and FGFR- 1, their degree ofexpression accorded with PCNA expression in these cells and with collagen III deposition in thetubulointerstitium.It...

The relationship between the expression of bFGF, FGFR-1 and renal tubulointerstitial fibrosis wasinvestigated by using immunohistochemistry and in situ hybridization techniques in thirty rat renaltubulointerstitial fibrosis models. The results showed that injured tubular cells excessively synthesized bFGF,FGFR- 1 and collagen IH; in addition, interstitial celIs widely expressed bFGF and FGFR- 1, their degree ofexpression accorded with PCNA expression in these cells and with collagen III deposition in thetubulointerstitium.It suggested that injury to tubular cells enhenced the secretion of bFGF and FGFR- 1.bFGFprobably promoted the regeneration of injured tubular celIs,the proliferation of interstitial cells and the synthzsisof collagen III through autocrine and/or paracrine mechanism, and thus accelerated the fibrosis of the renalinterstitium.

利用免疫组织化学及原位杂交技术观察30例肾间质纤维化模型大鼠,探讨碱性成纤维细胞生长因子(bFG)及受体(FGFR-1)与肾小管间质纤维化的关系。结果显示大鼠模型中损伤的肾小管上皮过度表达bFGF、FGFR-1,且合成Ⅲ型胶元;肾间质细胞广泛表达bFGF和FGFR-1,而且此表达程度和间质细胞核增殖及小管间质Ⅲ型胶元沉积程度一致.本实验证实肾小管损伤刺激bFGF、FGFR-1的分泌,提示bFGF可能通过自分泌和(或)旁分泌机制促进肾小管上皮的再生修复、间质细胞的增殖及Ⅲ型胶元的合成,从而促进肾小管间质纤维化的形成。

 
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