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儿童过敏性紫癜性肾炎血管内皮生长因子基因多态性的研究
Gene polymorphism of vascular endothelial growth factor in children with Henoch-Schonlein purpura nephritis
目的：探讨血管内皮生长因子(VEGF)-634G/C基因多态性与汉族儿童紫癜性肾炎(HSPN)的关系。方法：应用聚合酶链反应－限制性内切酶片段长度多态性（PCR－RFLP）技术对100例过敏性紫癜（HSP）汉族儿童进行VEGF -634G/C基因型分析，其中包括合并紫癜性肾炎50例（HSPN 组），无合并肾炎者 50例（单纯HSP组）。50例年龄、性别匹配的健康汉族儿童作为对照组。并采用酶联免疫吸附试验(ELISA)检测各组血浆VEGF水平。结果：HSPN组VEGF-634CC基因型（32%）和C等位基因频率（56%）均高于对照组（分别为10%和33%）及单纯HSP组（分别为10%和35%，P<0.01）。HSP患儿中，CC基因型者肾炎的发生率比GG基因型者明显增加, 差异有显著性意义（76% vs 31%，P<0.01）。CC基因型者血浆VEGF水平(180.5±40.7 pg/mL)较CG(145.2±48.3 pg/mL)及GG (101.5±26.5 pg/mL)基因型者显著上升, 差异有显著性意义（P<0.05）。结论：VEGF-634G/C基因多态性与儿童HSPN的发生有关。C等位基因可能是儿童HSPN的易感基因。［中国当代儿科杂志，2009，11（6）：417-421］
OBJECTIVE: To study the relationship of -634G/C gene polymorphism of vascular endothelial growth factor (VEGF) with Henoch-Schonlein purpura nephritis (HSPN) in children. METHODS: One hundred ethnic Han children with HSP, including 50 children with concurrent nephritis (HSPN group) and 50 children without nephritis (HSP without nephritis group), were enrolled. Fifty age-, sex-and ethnics-matched healthy children were used as the control group. VEGF-634G/C genotypes were determined by PCR-RFLP. Plasma VEGF levels were measured using ELISA. RESULTS: CC genotype distribution (32%) and C allele frequency (56%) in the HSPN group were significantly higher than those in the control group (10% and 35% respectively) and the HSP without nephritis group (10% and 33% respectively) (P<0.01). The incidence of nephritis in HSP patients with CC genotype increased significantly when compared with those with GG genotype (76% vs 31%; P<0.01). Plasma VEGF levels in patients with CC genotype (180.5±40.7 pg/mL) were significantly higher than those in patients with CG (145.2±48.3 pg/mL) and GG (101.5±26.5 pg/mL) genotypes (P<0.05). CONCLUSIONS: VEGF-634G/C gene polymorphism may be associated with the development of HSPN. C allele may a susceptible gene of HSPN.［Chin J Contemp Pediatr, 2009, 11 (6):417-421］
过敏性紫癜性肾炎 / 基因多态性 / 血管内皮生长因子 / 儿童
Henoch-Schonlein purpura nephritis / Gene polymorphism / Vascular endothelial growth factor / Child
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