Lindenthal Christoph, Kremsner Peter G, Klinkert Mo-Quen
Department of Parasitology, Institute for Tropical Medicine, University of Tübingen, Wilhelmstrasse 27, 72074 Tübingen, Germany.
Parasitol Res. 2003 Nov;91(5):363-8. doi: 10.1007/s00436-003-0975-6. Epub 2003 Sep 16.
Cerebral malaria (CM) is a devastating form of Plasmodium falciparum malaria, in which adherence and sequestration of infected red blood cells in cerebral blood vessels play a major role. In order to determine whether a distinct parasite phenotype favours the development of this severe complication, P. falciparum isolates from Gabonese children suffering from CM or uncomplicated malaria (UM) were analysed for their binding phenotypes and their recognition in flow cytometry. CM isolates exhibited the ability to form rosettes and to bind ICAM-1, in line with previous studies correlating these phenotypes with CM disease pathology. CM isolates were more reactive with plasma from our cohort than UM parasites. This observation, together with the finding that some CM isolates were highly correlated with each other in their immunoreactivities, confirms that common parasites bearing conserved epitopes, which are capable of inducing cross-reactive antibodies, can cause CM in children.
脑型疟疾(CM)是恶性疟原虫疟疾的一种毁灭性形式,其中受感染红细胞在脑血管中的黏附和滞留起主要作用。为了确定是否有独特的寄生虫表型有利于这种严重并发症的发展,对来自加蓬患脑型疟疾或非重症疟疾(UM)儿童的恶性疟原虫分离株进行了结合表型及其在流式细胞术中识别情况的分析。脑型疟疾分离株表现出形成玫瑰花结和结合细胞间黏附分子-1(ICAM-1)的能力,这与之前将这些表型与脑型疟疾疾病病理相关联的研究一致。与非重症疟疾寄生虫相比,脑型疟疾分离株与我们队列中的血浆反应更强。这一观察结果,连同一些脑型疟疾分离株在免疫反应性上彼此高度相关的发现,证实携带保守表位、能够诱导交叉反应抗体的常见寄生虫可导致儿童患脑型疟疾。