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首页> 外文期刊>Growth Factors >Effects of endothelin-1 on fibroblasts from type 2 diabetic patients: Possible role in wound healing and tissue repair.
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Effects of endothelin-1 on fibroblasts from type 2 diabetic patients: Possible role in wound healing and tissue repair.

机译:内皮素-1对2型糖尿病患者成纤维细胞的影响:在伤口愈合和组织修复中的可能作用。

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摘要

Endothelin-1 (ET-1) promotes the contractile ability of fibroblasts, essential for wound closure and reconstitution of the dermis. Wound healing is impaired in type 2 diabetic patients (D). We compared the effect of ET-1 on proliferative transforming growth factor (TGFbeta(1)) expression, fibronectin and laminin release), differentiative [alpha-smooth muscle actin (alpha-SMA) expression] and inflammatory [monocyte chemo-attractant protein (MCP-1) and interleukin-6 (IL-6) expression] responses in skin fibroblasts of healthy subjects (C) and D, testing the relative role of ET(A) and ET(B) receptors in mediating these responses. ET-1 did not influence TGFbeta(1), fibronectin or laminin production. alpha-SMA was more abundant and more stimulated in D, as well as MCP-1 and IL-6 expression and release. These effects were prevented by BMS-182874, selective antagonist of ET(A), more abundant than ET(B) in both cell strains and whose expression rose more in D than C upon stimulation with ET-1. This peculiar pattern of responses to ET-1, presumably acquired during the chronic in vivo exposure to hyperglycemia along the natural history of the disease, may partially explain the increased susceptibility of D to chronic ulcerations.
机译:内皮素-1(ET-1)促进成纤维细胞的收缩能力,这对于伤口闭合和真皮重建至关重要。 2型糖尿病患者的伤口愈合受损(D)。我们比较了ET-1对增殖性转化生长因子(TGFbeta(1))表达,纤连蛋白和层粘连蛋白释放),差异性[α-平滑肌肌动蛋白(alpha-SMA)表达]和炎症性[单核细胞化学吸引蛋白( MCP-1)和白介素6(IL-6)表达]在健康受试者(C)和D的皮肤成纤维细胞中的应答,测试ET(A)和ET(B)受体在介导这些应答中的相对作用。 ET-1不会影响TGFbeta(1),纤连蛋白或层粘连蛋白的产生。 α-SMA在D以及MCP-1和IL-6的表达和释放中更丰富,更受刺激。 BMS-182874是ET(A)的选择性拮抗剂,在两种细胞株中均比ET(B)丰富,并且在受到ET-1刺激后,其在D中的表达量比C的表达量更多。这种对ET-1反应的特殊模式,大概是在疾病的自然病程中,在体内长期暴露于高血糖的过程中获得的,可以部分解释D对慢性溃疡的敏感性增加。

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