Abstract:
:For prevention and control of gonorrhea, an objective, highly discriminating, and reproducible molecular epidemiological characterization of Neisseria gonorrhoeae is essential. In the present study, in pursuance of providing such qualities, pyrosequencing technology, a fast real-time DNA sequence analysis, was applied to six short, highly polymorphic porB gene segments, with subsequent genetic variant (genovar) determination of the bacterial isolates. The sequencing templates were obtained by real-time PCR amplification, which also included fluorescence melting curve analysis of the entire porB gene in order to determine the genogroup (porB1a or porB1b allele) prior to pyrosequencing analysis. The PSQ 96 MA system used allowed rapid (in approximately 1.5 h) determination of 96 sequences of 20 to 65 correct nucleotides each. The results were reproducible and mostly in concordance with the results of conventional Sanger dideoxy sequencing, with the exception of shorter read lengths and some uncertainty in determining the correct number of identical nucleotides in homopolymeric segments. The number of sequence variants identified in each of the six highly polymorphic segments of the porB1a and porB1b alleles (encoding surface-exposed amino acid loops of the mature PorB protein) ranged from 5 to 11 and from 8 to 39, respectively. Among porB1a isolates (n = 22) and porB1b isolates (n = 65), 22 and 64 unique genovars, respectively, were identified. All isolates were typeable. The present results provide evidence of a high discriminatory ability, practically the same as that for sequencing of the entire porB gene. In conclusion, the fast and high-throughput pyrosequencing technology can be used for molecular epidemiological characterization of N. gonorrhoeae.
journal_name
J Clin Microbioljournal_title
Journal of clinical microbiologyauthors
Unemo M,Olcén P,Jonasson J,Fredlund Hdoi
10.1128/JCM.42.7.2926-2934.2004subject
Has Abstractpub_date
2004-07-01 00:00:00pages
2926-34issue
7eissn
0095-1137issn
1098-660Xpii
42/7/2926journal_volume
42pub_type
杂志文章abstract::Family members of hepatitis C virus (HCV)-infected hemodialysis patients had a high rate (8.1%) of HCV infection and were often infected by the same genotype of HCV as the renal patients. Renal patients who had a longer history of hemodialysis or more frequent arteriovenous shunt replacement posed a higher risk to the...
journal_title:Journal of clinical microbiology
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doi:10.1128/JCM.32.11.2824-2826.1994
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journal_title:Journal of clinical microbiology
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doi:10.1128/JCM.27.12.2751-2757.1989
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journal_title:Journal of clinical microbiology
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journal_title:Journal of clinical microbiology
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doi:10.1128/JCM.29.4.696-701.1991
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.28.5.944-948.1990
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journal_title:Journal of clinical microbiology
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journal_title:Journal of clinical microbiology
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journal_title:Journal of clinical microbiology
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journal_title:Journal of clinical microbiology
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.25.3.467-470.1987
更新日期:1987-03-01 00:00:00
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.20.3.570-571.1984
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journal_title:Journal of clinical microbiology
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
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journal_title:Journal of clinical microbiology
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journal_title:Journal of clinical microbiology
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journal_title:Journal of clinical microbiology
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journal_title:Journal of clinical microbiology
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
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journal_title:Journal of clinical microbiology
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journal_title:Journal of clinical microbiology
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