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Tissue reactions induced by hydrocolloid wound dressings.

机译:水胶体伤口敷料引起的组织反应。

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摘要

Porcine full-thickness excisional wounds were treated with 4 different hydrocolloid (HCD) dressings--DuoDERM (ConvaTec/E. R. Squibb), Intrasite HCD (Smith and Nephew Medical), Tegasorb (3M) and Replicare (Smith and Nephew Medical). Animals were killed at 4, 10, 21 and 90 d post-wound, excision sites were fixed in formalin and processed for histological analysis. Granulomatous lesions were observed following treatment with each of the 4 HCD dressings. Such lesions developed between 4 and 10 d post-wound, exhibiting little evidence of resolution at 90 d post-wound. Of the 4 dressings examined, DuoDERM and Intrasite HCD precipitated the most severe reaction, each treatment resulting in granulomata with a distinct and different morphology. Treatment with DuoDERM resulted in granulomata characterised by a random distribution of dendritic cells, epithelioid cells, multinucleated giant cells, lymphocytes and plasma cells. In contrast, treatment with Intrasite HCD resulted in highly organised granulomata, consisting of a central focus of epithelioid cells surrounded by a peripheral cuff of macrophages, lymphocytes and plasma cells. This experimental study highlights chronic inflammatory lesions that may, if reflected in the clinical environment, question the efficacy and indication of HCD dressings in the treatment of wounds having a number of different aetiologies.
机译:猪全层切除伤口用4种不同的水胶体(HCD)敷料处理-DuoDERM(ConvaTec / E.R.Squibb),Intrasite HCD(Smith和Nephew Medical),Tegasorb(3M)和Replicare(Smith和Nephew Medical)。在伤口后第4、10、21和90天处死动物,将切除部位固定在福尔马林中并进行处理以进行组织学分析。用4种HCD敷料治疗后均观察到肉芽肿性病变。此类损伤在伤口后4到10 d之间发展,在伤口90 d时几乎没有证据显示消退。在所检查的4种敷料中,DuoDERM和Intrasite HCD引起最严重的反应,每种处理均导致肉芽肿具有不同的形态。用DuoDERM处理会导致肉芽肿,其特征是树突状细胞,上皮样细胞,多核巨细胞,淋巴细胞和浆细胞随机分布。相反,用Intrasite HCD治疗会导致高度组织化的肉芽肿,肉芽肿由上皮样细胞的中心焦点组成,周围是巨噬细胞,淋巴细胞和浆细胞的周围套囊。这项实验研究强调了慢性炎症性病变,如果反映在临床环境中,可能会质疑HCD敷料在治疗具有多种不同病因的伤口方面的功效和适应症。

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