血管内皮细胞生长因子的结构及其多种生物学效应

被引:26
作者
高永红
邱明才
机构
[1] 天津医科大学总医院内分泌科
关键词
血管内皮细胞生长因子; 生物学效应; 糖尿病; 并发症; 综述文献;
D O I
暂无
中图分类号
R346 [];
学科分类号
摘要
学术背景:血管内皮细胞生长因子作为一种多功能的细胞生长因子,在多种生理和病理情况下具有多种生物学效应。目的:总结血管内皮细胞生长因子的分子结构及多种生物学作用。检索策略:作者应用计算机检索PubMed数据库1989-01/2007-12有关血管内皮细胞生长因子的文章,检索词"VEGF,molecularstructure,biologicaleffect,diabetes,diabeticmacroangiopathy",并限定文章语言种类为English。初检得到934篇文章,其中38篇有关血管内皮细胞生长因子分子结构和生物学效应,896篇有关糖尿病及其大血管并发症,对资料进行初审,选取符合研究要求的有关文章找全文。纳入标准:①有关血管内皮细胞生长因子分子结构、生物学特性的研究。②有关糖尿病及其合并冠状动脉性心脏病、下肢血管疾病的研究。排除重复性、陈旧性和关联价值不大的文献897篇,保留35篇文献进一步分析。文献评价:35篇文献中动物实验和在体、离体、细胞学实验17篇,综述、述评类文献8篇,临床研究10篇;均为个人评价。资料综合:人类血管内皮细胞生长因子基因由8个外显子和7个内含子组成,定位于染色体6p21.3,由于外显子剪切的不同形成多种亚型,各亚型具有不同的生物学特点。两种血管内皮细胞生长因子受体各有特点,介导不同的生物学作用。血管内皮细胞生长因子及其受体受多种因素调控,受体与配体结合后发挥广泛的生物学效应。与非糖尿病患者比较,合并冠心病的糖尿病患者心肌血管内皮细胞生长因子mRNA和蛋白表达增加,而血管内皮细胞生长因子两种受体mRNA和蛋白表达减少。与非重度下肢缺血者比较,合并重度下肢缺血的糖尿病患者产生更多血管内皮细胞生长因子。实验研究认为血管内皮细胞生长因子能够恢复受损的新生血管形成能力,但目前关于糖尿病时血管内皮细胞生长因子的治疗价值有待进一步研究。结论:研究认为血管内皮细胞生长因子能够恢复受损的新生血管形成能力,尤其在糖尿病大血管病变时的表达具有多样性,目前需加强此类研究以充分显示其对糖尿病大血管病变的防治价值。
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页码:2951 / 2955
页数:5
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