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原発性シェーグレン症候群患者におけるインフルエンザワクチン接種後の免疫反応
Immune responses after influenza vaccination in patients of primary Sjögren's syndrome.
PMID: 32671409 DOI: 10.1093/rheumatology/keaa243.
抄録
目的:
インフルエンザワクチンの接種はほとんどの人の感染予防に有効である。本研究は,インフルエンザワクチン接種後の原発性シェーグレン症候群(pSS)患者における免疫反応の変化を評価し,インフルエンザワクチン接種の安全性を判断することを目的とした.
OBJECTIVES: Influenza vaccination is effective in preventing infections in most people. This study aimed to assess the changes of immune responses in primary Sjögren's Syndrome (pSS) patients after influenza vaccination and determine the safety of influenza vaccination.
方法:
pSS 患者 17 例と健常対照 16 例(HC)が含まれた。末梢単核細胞をフローサイトメトリーで分析した。ワクチン特異的抗体はELISA法で測定した。臨床的特徴および血清学的反応をモニターした。
METHODS: A total of 17 patients with pSS and 16 healthy controls (HCs) were included. Peripheral mononuclear cells were analysed by flow cytometry. Vaccine-specific antibodies were determined by ELISA. Clinical features and serological responses were monitored.
結果:
T濾胞ヘルパー細胞(Tfh)の割合はワクチン接種後にHCsで有意に上昇したが(P=0.0005)、pSS患者ではTfhのレベルに有意差は認められなかった(P=0.1748)。Th2細胞の割合は、pSS患者とHCの両方でワクチン接種後に有意に減少した(P<0.05)。対照的に、Th1細胞およびTh17細胞の割合は、pSS患者ではワクチン接種後に有意に増加した(P<0.05)が、HCではTh1細胞およびTh17細胞の割合に有意差は認められなかった(P>0.05)が、Th1細胞のレベルが高くなる傾向が観察された(P=0.0830)。ワクチン接種後のメモリーB細胞およびプラスマブラストの割合には有意な変化は認められなかった。pSS患者では、HC患者と比較してワクチン特異的IgGが高レベルで発現した(P=0.001)。ワクチン接種後の疾患発現および臨床検査値には有意な変化は認められなかった。pSSではワクチン接種に関連した副作用の増加は観察されなかった。
RESULTS: The percentages of T follicular helper cell (Tfh) were significantly elevated in HCs after vaccination (P=0.0005), while no significant differences in the levels of Tfh in pSS patients were identified (P=0.1748). The proportions of Th2 cells were significantly decreased after vaccination in both pSS patients and HCs (P<0.05). In contrast, the percentages of Th1 cells and Th17 cells were significantly increased after vaccination in pSS patients (P<0.05), while no significant differences in the percentages of Th1 and Th17 cells were identified in HCs (P>0.05), although a trend towards higher levels of Th1 cells was observed (P=0.0830). No significant changes in the proportions of memory B cells and plasmablasts were observed after vaccination. Patients with pSS developed higher levels of vaccine-specific IgGs compared with HCs (P=0.001). No significant changes in disease manifestations and laboratory parameters were observed after vaccination. No increased vaccination related adverse effect was observed in pSS.
結論:
我々の所見は、pSS患者にインフルエンザワクチンを適用することの可能性を示唆し、リウマチ学会や医療関係者の間でワクチン接種に対する意識を高めることを示唆している。
CONCLUSION: Our findings suggest the feasibility of applying influenza vaccines to patients with pSS, raising awareness for vaccination among the rheumatology community and involved healthcare professionals.
© The Author(s) 2020. Published by Oxford University Press on behalf of the British Society for Rheumatology. All rights reserved. For permissions, please email: journals.permissions@oup.com.