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首页> 外文期刊>The American Journal of Tropical Medicine and Hygiene >Cytoadherence characteristics of Plasmodium falciparum isolates from Thailand: evidence for chondroitin sulfate a as a cytoadherence receptor.
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Cytoadherence characteristics of Plasmodium falciparum isolates from Thailand: evidence for chondroitin sulfate a as a cytoadherence receptor.

机译:来自泰国的恶性疟原虫分离株的细胞粘附特性:硫酸软骨素a作为细胞粘附受体的证据。

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摘要

The association between cytoadherence of Plasmodium falciparum-infected erythrocytes and the severity of malaria has been evaluated. In this study, we investigate adherence to C32 melanoma cells, CD36, intracellular adhesion molecule-1 (ICAM-1), thrombospondin (TSP), E-selectin, vascular cell adhesion molecule-1 (VCAM-1), and chondroitin sulfate A (CSA) of 36 P. falciparum isolates from patients suffering from acute falciparum malaria. Adherence to purified adhesion molecules varied greatly among different parasite isolates. All isolates but one adhered to CD36, but none bound to E-selectin and VCAM-1 beyond control levels. Some P. falciparum isolates adhered to ICAM-1 and to CSA, a newly identified receptor for adherence. There was no correlation between in vitro binding to any one receptor and the patients' conditions. In addition, we investigated the characteristics of adherence to CSA and to C32 melanoma cells. Infected erythrocytes continued to adhere after trypsin digestion and soluble CSA inhibited adherence to C32 melanoma cells in a dose-dependent manner. The results imply a role for CSA in the natural infection of P. falciparum.
机译:已经评估了恶性疟原虫感染的红细胞的细胞粘附与疟疾严重程度之间的关联。在这项研究中,我们研究了对C32黑色素瘤细胞,CD36,细胞内粘附分子1(ICAM-1),血小板反应蛋白(TSP),E-选择素,血管细胞粘附分子1(VCAM-1)和硫酸软骨素A的粘附性(CSA)从患有急性恶性疟疾的患者中分离出的36株恶性疟原虫。在不同的寄生虫分离物中,对纯化的粘附分子的粘附差异很大。除了一个分离株,所有分离株都粘附于CD36,但没有一个分离株与E-选择素和VCAM-1结合,超出控制水平。一些恶性疟原虫分离株粘附于ICAM-1和CSA(一种新发现的粘附受体)。体外与任何一种受体的结合与患者状况之间没有相关性。此外,我们调查了对CSA和C32黑色素瘤细胞的依从性。胰蛋白酶消化后,感染的红细胞继续粘附,可溶性CSA以剂量依赖性方式抑制对C32黑色素瘤细胞的粘附。结果暗示CSA在恶性疟原虫的自然感染中起作用。

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