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Journal of Clinical Microbiology, August 1999, p. 2576-2580, Vol. 37, No. 8
Institut für Medizinische Mikrobiologie
und Immunologie, Universitäts-Krankenhaus Eppendorf, 20246 Hamburg, Germany
Received 14 October 1998/Returned for modification 15 April
1999/Accepted 4 May 1999
Serological determination of hepatitis C virus (HCV) subtypes has
been hampered by the lack of suitable assays. Therefore, a recombinant
immunoblot assay has been established for serological differentiation
of HCV subtypes 1a, 1b, 2a, 2b, 3a, and 4a. It consists of recombinant
HCV proteins from the NS-4 region propagated in Escherichia
coli. To confirm the serotyping assay results, the results were
compared with those obtained by nucleotide sequencing of the NS-5
region. Sera from 157 patients with chronic HCV infection were examined
by this assay, and specific antibodies could be detected in 86%
(n = 135) of them. The HCV genotype was determined correctly in all but one sample, and the subtypes determined by the
serotyping assay corresponded to the HCV subtypes detected by
nucleotide sequencing for 95% (n = 128) of the
samples. These data indicate that HCV subtypes can be distinguished
serologically. The assay that is described provides an easier means of
identification of infection with different HCV subtypes for wider
clinical and epidemiological applications.
0095-1137/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.
Serological Determination of Hepatitis C Virus
Subtypes 1a, 1b, 2a, 2b, 3a, and 4a by a Recombinant Immunoblot
Assay
*
Corresponding author. Mailing address: Institut
für Medizinische Mikrobiologie und Immunologie,
Universitäts-Krankenhaus Eppendorf, Martinistrasse 52, D-20246
Hamburg, Germany. Phone: 49-40.47173159. Fax: 49-40.47174062. E-mail: mschroet{at}uke.uni-hamburg.de.
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