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  • Title: A novel mu-capture enzyme-linked immunosorbent assay based on recombinant proteins for sensitive and specific diagnosis of hemorrhagic fever with renal syndrome.
    Author: Zöller LG, Yang S, Gött P, Bautz EK, Darai G.
    Journal: J Clin Microbiol; 1993 May; 31(5):1194-9. PubMed ID: 8099085.
    Abstract:
    Hantavirus nucleocapsid protein has recently been identified as a major antigen inducing an early and long-lasting humoral immune response in patients with hemorrhagic fever with renal syndrome. A mu-capture enzyme-linked immunosorbent assay utilizing recombinant nucleocapsid proteins of Hantavirus strains Hantaan 76-118 (Hantaan serotype) and CG 18-20 (Puumala serotype) as diagnostic antigens and specific monoclonal antibodies as the detection system has been developed. Histidine-tailed recombinant proteins were expressed in Escherichia coli and purified in a single step by affinity chromatography on a nickel-chelate resin. The assay was evaluated with a panel of sera from patients with hemorrhagic fever with renal syndrome originating from various geographic regions. The overall sensitivity of the mu-capture enzyme-linked immunosorbent assay (both recombinant antigens) was 100%, and its specificity was also found to be 100%. Immunoglobulin M antibodies were detected as early as on day 3, and maximum titers were obtained between days 8 and 25 after onset of the disease. The assay was regularly found to be positive within 3 to 4 months but in some cases up to 2 years after the acute phase of the disease.
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