首页> 外文期刊>Endothelium: Journal of endothelial cell research >Improved identification of endothelial erosion by simultaneous detection of endothelial cells (CD31/CD34) and platelets (CD42b).
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Improved identification of endothelial erosion by simultaneous detection of endothelial cells (CD31/CD34) and platelets (CD42b).

机译:通过同时检测内皮细胞(CD31 / CD34)和血小板(CD42b),可以更好地识别内皮侵蚀。

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摘要

Loss of endothelial cells (ECs) with ensuing exposure of thrombogenic subendothelial surface is a common cause of thromboembolic complications in atherosclerotic arteries. Thus, endothelial denudation has emerged as a major contributor to the pathogenesis of atherosclerosis and its complications. Despite ongoing efforts in elucidating the pathogenesis of endothelial erosions in human atherosclerotic arteries, the mechanisms of erosion have remained enigmatic, partly due to lack of well-established methods for its identification. Here the authors point out plausible pitfalls in the current methodology and provide an improved immunohistochemical method for identifying endothelial erosion; i.e., immunofluorescence double staining with antibodies against CD42b and CD31/CD34. This method enables reliable detection of ECs and platelets in the same staining by allowing detection of "pseudoendothelium" caused by CD31 staining of a thin platelet layer covering sites of endothelial erosion. As erosion with a luminal platelet thrombus is likely to represent an in vivo erosion, and erosion without platelets an ex vivo artefact, the method makes it possible to exclude artefactual erosions resulting from sample processing. The novel immunostaining protocol presented here allows more reliable detection of endothelial erosions and so may facilitate studies on the mechanisms involved in the pathogenesis of plaque erosion and acute coronary syndromes.
机译:随后暴露于血栓形成的内皮下表面,导致内皮细胞(EC)的丢失是动脉粥样硬化动脉血栓栓塞并发症的常见原因。因此,内皮剥脱已经成为动脉粥样硬化及其并发症的发病机理的主要贡献者。尽管正在努力阐明人的动脉粥样硬化动脉中的内皮侵蚀的发病机理,但是侵蚀的机理仍然是令人迷惑的,部分原因是缺乏确定的鉴定方法。在这里,作者指出了当前方法学中可能存在的缺陷,并提供了一种改进的免疫组织化学方法来鉴定内皮侵蚀。即用针对CD42b和C​​D31 / CD34的抗体进行的免疫荧光双重染色。通过允许检测覆盖内皮侵蚀部位的薄血小板层的CD31染色引起的“假内皮”,该方法能够在相同的染色中可靠地检测EC和血小板。由于管腔血小板血栓的侵蚀可能代表体内侵蚀,而无血小板的侵蚀则是体外人工制品,因此该方法可以排除样品处理导致的人工制品侵蚀。这里介绍的新型免疫染色方案可以更可靠地检测内皮细胞糜烂,因此可以促进对斑块糜烂和急性冠状动脉综合征的发病机理所涉及的机制的研究。

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