Evidence map›Paper›PMID 15583264›Full record

ArticleJournal of clinical microbiology2004

Antigenic divergence suggested by correlation between antigenic variation and pulsed-field gel electrophoresis profiles of Bordetella pertussis isolates in Japan.

Atsuko Kodama, Kazunari Kamachi, Yoshinobu Horiuchi, Toshifumi Konda, Yoshichika Arakawa

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Article in Journal of clinical microbiology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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3 · Its place in the literature

Who cites it

14 citing papers in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

5 authors.

Atsuko KodamaDepartment of Bacterial Pathogenesis and Infection Control, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashimurayama City, Tokyo 208-0011, Japan.
Kazunari Kamachi
Yoshinobu Horiuchi
Toshifumi Konda
Yoshichika Arakawa

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Antigenic divergence has been found between Bordetella pertussis vaccine strains and circulating strains in several countries. In the present study, we analyzed B. pertussis isolates collected in Japan from 1988 to 2001 using pulsed-field gel electrophoresis (PFGE) and sequencing of two virulence-associated proteins. The 107 isolates were classified into three major groups by PFGE analysis; 87 (81%) were type A, 19 (18%) were type B, and 1 (1%) was type C. Sequence analysis of the S1 subunit of pertussis toxin (ptxS1) and adhesion pertactin (prn) genes revealed the presence of two (ptxS1A and ptxS1B) and three (prn1, prn2, and prn3) variants, respectively, in the isolates. Among those isolates, 82 (95%) of the 87 type A strains and the type C strain had the same combination of ptxS1B and prn1 alleles (ptxS1B/prn1) as the Japanese vaccine strain. On the other hand, 17 (90%) of 19 type B strains had an allele (ptxS1A/prn2) distinct from that of the vaccine strain. A correlation was found between the antigenic variation and the PFGE profile in the isolates. In addition, the frequency of the type B strain was 0, 27, 0, 42, and 37% of the isolates in the periods 1988 to 1993, 1994 to 1995, 1996 to 1997, 1998 to 1999, and 2000 to 2001, respectively. In contrast, the number of reported pertussis-like and pertussis cases decreased gradually from 1991 on, suggesting that the antigenic divergence did not affect the efficacy of pertussis vaccination in Japan.

Indexed as

Antigenic VariationAmino Acid SequenceAntigens, BacterialBacterial Outer Membrane ProteinsBordetella pertussisElectrophoresis, Gel, Pulsed-FieldGenetic VariationHumansJapanMolecular Sequence DataPertussis ToxinPertussis VaccineVirulence Factors, BordetellaWhooping CoughAntigens, BacterialBacterial Outer Membrane ProteinspertactinPertussis ToxinPertussis VaccineVirulence Factors, Bordetella

Identifiers

PMID15583264
PMCPMC535240

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.