Libra M, Signorelli S S, Bevelacqua Y, Navolanic P M, Bevelacqua V, Polesel J, Talamini R, Stivala F, Mazzarino M C, Malaponte G
Department of Biomedical Sciences, University of Catania, Via Androne, 83-95124, Catania, Italy.
J Clin Pathol. 2006 Feb;59(2):211-5. doi: 10.1136/jcp.2004.025452.
To determine whether the G(-174)C interleukin 6 (IL-6) polymorphism influences the development of peripheral arterial disease (PAD) in individuals with type 2 diabetes. This was investigated by comparing the distribution of G(-174)C genotypes between patients with type 2 diabetes and PAD (PAD+) and those with type 2 diabetes but without PAD (PAD-). Plasma concentrations of IL-6, fibrinogen, C reactive protein (CRP), and vascular endothelial growth factor (VEGF) were also compared in PAD+ and PAD- patients.
Blood samples were collected from 146 PAD+ and 144 PAD- patients. SfaNI was used to determine the G(-174)C genotype. Plasma concentrations of IL-6, fibrinogen, CRP, and VEGF were measured by an enzyme linked immunosorbent assay.
The GG genotype was more common in PAD+ patients than in PAD- patients. PAD+ patients also had increased mean plasma concentrations of IL-6, fibrinogen, CRP, and VEGF compared with PAD- patients. Mean plasma concentrations of IL-6, fibrinogen, and CRP in both PAD+ and PAD- patients were higher in those with the GG genotype than in those with the GC or CC genotypes. In contrast, mean plasma concentrations of VEGF in PAD+ and PAD- patients were not significantly different between those with different G(-174)C genotypes.
These results support a model in which the GG genotype promotes PAD development among individuals with type 2 diabetes by inducing increased release of IL-6. Higher concentrations of IL-6 among those with the GG genotype is associated with increased plasma concentrations of fibrinogen and CRP.
确定白细胞介素6(IL-6)基因G(-174)C多态性是否会影响2型糖尿病患者外周动脉疾病(PAD)的发生发展。通过比较2型糖尿病合并PAD患者(PAD+)与2型糖尿病但无PAD患者(PAD-)之间G(-174)C基因型的分布情况来进行研究。同时,还比较了PAD+和PAD-患者血浆中IL-6、纤维蛋白原、C反应蛋白(CRP)和血管内皮生长因子(VEGF)的浓度。
采集了146例PAD+患者和144例PAD-患者的血样。采用SfaNI酶切法确定G(-174)C基因型。通过酶联免疫吸附测定法测量血浆中IL-6、纤维蛋白原、CRP和VEGF的浓度。
GG基因型在PAD+患者中比在PAD-患者中更常见。与PAD-患者相比,PAD+患者血浆中IL-6、纤维蛋白原、CRP和VEGF的平均浓度也有所升高。GG基因型的PAD+和PAD-患者血浆中IL-6、纤维蛋白原和CRP的平均浓度高于GC或CC基因型的患者。相比之下,不同G(-174)C基因型的PAD+和PAD-患者血浆中VEGF的平均浓度无显著差异。
这些结果支持了一种模型,即GG基因型通过诱导IL-6释放增加,促进2型糖尿病患者发生PAD。GG基因型患者中较高的IL-6浓度与血浆中纤维蛋白原和CRP浓度升高有关。