Effect of dengue-1 antibodies on American dengue-2 viral infection and dengue haemorrhagic fever

Effect of dengue-1 antibodies on American dengue-2 viral infection and dengue haemorrhagic fever
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DOI:
10.1016/s0140-6736(02)09522-3
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发表时间:
2002-07-27
期刊:
影响因子:
168.9
通讯作者:
Russe, KL
Russe, KL
中科院分区:
医学1区
文献类型:
--
作者:
Kochel, TJ;Watts, DM;Russe, KL

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在秘鲁伊基托斯,在感染登革热1型病毒后又感染美洲基因型登革热2型(美洲登革热2型)病毒的个体中,没有登革出血热病例的记录。我们检测了在伊基托斯采集的血清样本,这些样本使用空斑减少中和试验对单型登革热1型和单型登革热2型抗体检测呈阳性,以确定它们中和两种登革热1型病毒、两种美洲登革热2型病毒和两种亚洲登革热2型病毒传染性的能力。登革热1型抗体阳性的血清对登革热1型病毒和美洲登革热2型病毒的中和作用比对亚洲登革热2型病毒的中和作用有效得多。登革热1型抗体阳性的血清对美洲登革热2型病毒的中和作用可能解释了1990 - 1991年在秘鲁伊基托斯感染登革热1型病毒,随后在1995年感染美洲登革热2型病毒的个体中没有出现登革出血热的原因。
In Iquitos, Peru, no cases of dengue haemorrhagic fever have been recorded in individuals infected with dengue-1 virus followed by American genotype dengue-2 (American dengue-2) virus. We assayed serum samples collected in Iquitos that tested positive for antibodies of monotype dengue-1 and monotype dengue-2 using a plaque reduction neutralisation test to determine their ability to neutralise the infectivity of two dengue-1 viruses, two American dengue-2 viruses, and two Asian dengue-2 viruses. Sera positive for the dengue-1 antibody neutralised dengue-1 viruses and American dengue-2 viruses much more effectively than Asian dengue-2 viruses. Neutralisation of American dengue-2 virus by sera positive for dengue-1 antibodies may account for the absence of dengue haemorrhagic fever in individuals infected with dengue-1 in 1990-91 followed by American dengue-2 virus in 1995 in Iquitos, Peru.