烧伤创面进展的局部病理生理基础综述。

A review of the local pathophysiologic bases of burn wound progression.

作者信息

Shupp Jeffrey W, Nasabzadeh Teresa J, Rosenthal Dean S, Jordan Marion H, Fidler Philip, Jeng James C

机构信息

The Burn Center, Department of Surgery, Washington Hospital Center, Washington, DC, USA.

出版信息

J Burn Care Res. 2010 Nov-Dec;31(6):849-73. doi: 10.1097/BCR.0b013e3181f93571.

Abstract

Burn wound progression refers to the phenomenon of continued tissue necrosis in the zone of stasis after abatement of the initial thermal insult. A multitude of chemical and mechanical factors contribute to the local pathophysiologic process of burn wound progression. Prolonged inflammation results in an accumulation of cytotoxic cytokines and free radicals, along with neutrophil plugging of dermal venules. Increased vascular permeability and augmentations of interstitial hydrostatic pressure lead to edema with vascular congestion. Hypercoagulability with thrombosis further impairs blood flow, while oxidative stress damages endothelial cells and compromises vascular patency. A number of studies have investigated the utility of various agents in modulating these mechanisms of burn wound progression. However, as many of studies have used animal models of burn injury, often with administration of therapy preburn, obscuring the clinical applicability of the results to burn patients is of questionable benefit. An understanding of the complex, interrelated mediators of burn wound progression and their ultimate point of convergence in effecting tissue necrosis—cell apoptosis or oncosis—will allow for the future development of therapeutic interventions.

摘要

烧伤创面进展是指在初始热损伤消退后,淤滞区内持续的组织坏死现象。多种化学和机械因素促成了烧伤创面进展的局部病理生理过程。长时间的炎症会导致细胞毒性细胞因子和自由基的积累,同时中性粒细胞阻塞真皮小静脉。血管通透性增加和间质流体静压升高导致伴有血管充血的水肿。高凝状态伴血栓形成进一步损害血流,而氧化应激会损伤内皮细胞并影响血管通畅性。许多研究已经探讨了各种药物在调节这些烧伤创面进展机制方面的效用。然而,由于许多研究使用的是烧伤损伤动物模型,且常常在烧伤前给药,因此这些结果对烧伤患者的临床适用性尚不确定,其益处值得怀疑。了解烧伤创面进展的复杂、相互关联的介质及其在导致组织坏死(细胞凋亡或胀亡)方面的最终汇聚点,将有助于未来治疗干预措施的发展。

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