2020年11月
Seroepidemiological analysis of anti-pneumococcal surface protein A (PspA) immunoglobulin G by clades in Japanese population
Vaccine
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- 巻
- 38
- 号
- 47
- 開始ページ
- 7479
- 終了ページ
- 7484
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.vaccine.2020.09.068
- 出版者・発行元
- Elsevier BV
BACKGROUND: Pneumococcal surface protein A (PspA) is one of the candidates of the novel pneumococcal protein vaccines. The seroepidemiology of naturally acquired anti-PspA immunoglobulin G (IgG) by clades, across a wide range of ages has not been investigated. METHODS: We examined the concentrations of anti-PspA IgG by clades (1, 2, 3, 4, and 5) in 397 sera from persons aged 0-≥70 years by enzyme-linked immunosorbent assay, and determined the geometric mean concentrations (GMCs) by age group. The relationships between concentrations of anti-PspA IgG antibody for each clade for each person were also assessed. RESULTS: GMC of anti-PspA IgG was lowest, highest, and plateaued in those aged 6-11 months, 5-9-years, and 20-49 years, respectively. It gradually declined in those aged > 70 years. GMCs patterns in different age groups were similar for all clades. Correlations were found especially within the same PspA family (between clades 1 and 2 or clades 4 and 5). CONCLUSIONS: Our data suggested that most people acquired anti-PspA IgG across clades 1, 2, 3, 4, and 5 during childhood. These results would be a fundamental data of clade-specific anti-PspA IgG antibodies.
- リンク情報
- ID情報
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- DOI : 10.1016/j.vaccine.2020.09.068
- ISSN : 0264-410X
- PubMed ID : 33039208