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卡介苗接种后老年个体抗菌肽反应增强

Enhanced Antimicrobial Peptide Response Following Bacillus Calmette-Guerin Vaccination in Elderly Individuals.

作者信息

Pandiarajan Arul Nancy, Kumar Nathella Pavan, Rajamanickam Anuradha, Bhavani Perumal Kannabiran, Jeyadeepa Bharathi, Selvaraj Nandhini, Asokan Dinesh, Tripathy Srikanth, Padmapriyadarsini Chandrasekharan, Babu Subash

机构信息

International Center for Excellence in Research, NIAID, Chennai 600031, India.

ICMR-National Institute for Research in Tuberculosis, Chennai 600031, India.

出版信息

Vaccines (Basel). 2024 Sep 18;12(9):1065. doi: 10.3390/vaccines12091065.

DOI:10.3390/vaccines12091065
PMID:39340094
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11436028/
Abstract

BACKGROUND

Antimicrobial peptides are an important component of host defense against Mycobacterium tuberculosis. However, the ability of BCG to induce AMPs as part of its mechanism of action has not been investigated in detail.

METHODS

We investigated the impact of Bacillus Calmette-Guerin (BCG) vaccination on circulating plasma levels and TB-antigen stimulated plasma levels of AMPs in a healthy elderly population. We assessed the association of AMPs, including Human Beta Defensin 2 (HBD-2), Human Neutrophil Peptide 1-3 (HNP1-3), Granulysin, and Cathelicidin (LL37), in circulating plasma and TB-antigen stimulated plasma (using IGRA supernatants) at baseline (pre-vaccination) and at Month 1 and Month 6 post vaccination.

RESULTS

Post BCG vaccination, both circulating plasma levels and TB-antigen stimulated plasma levels of AMPs significantly increased at Month 1 and Month 6 compared to pre-vaccination levels in the elderly population. However, the association of AMP levels with latent TB (LTB) status did not exhibit statistical significance.

CONCLUSION

Our findings indicate that BCG vaccination is linked to heightened circulating levels of AMPs in the elderly population, which are also TB-antigen-specific. This suggests a potential mechanism underlying the immune effects of BCG in enhancing host defense against TB.

摘要

背景

抗菌肽是宿主抵御结核分枝杆菌的重要组成部分。然而,卡介苗作为其作用机制的一部分诱导抗菌肽的能力尚未得到详细研究。

方法

我们在健康老年人群中研究了卡介苗接种对循环血浆中抗菌肽水平以及结核抗原刺激血浆中抗菌肽水平的影响。我们评估了包括人β-防御素2(HBD-2)、人中性粒细胞肽1-3(HNP1-3)、颗粒溶素和杀菌肽(LL37)在内的抗菌肽在基线(接种前)、接种后第1个月和第6个月时循环血浆和结核抗原刺激血浆(使用IGRA上清液)中的相关性。

结果

与老年人群接种前水平相比,卡介苗接种后,第1个月和第6个月时循环血浆中抗菌肽水平以及结核抗原刺激血浆中抗菌肽水平均显著升高。然而,抗菌肽水平与潜伏性结核(LTB)状态之间的相关性未显示出统计学意义。

结论

我们的研究结果表明,卡介苗接种与老年人群中循环抗菌肽水平升高有关,且这些抗菌肽具有结核抗原特异性。这提示了卡介苗在增强宿主抵御结核的免疫作用中的潜在机制。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7fbd/11436028/2f77c3e93276/vaccines-12-01065-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7fbd/11436028/11d4ab8bd453/vaccines-12-01065-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7fbd/11436028/bd1ab8f59efe/vaccines-12-01065-g002a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7fbd/11436028/f43411a61190/vaccines-12-01065-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7fbd/11436028/9d5ca3a29692/vaccines-12-01065-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7fbd/11436028/6c5fb07baf91/vaccines-12-01065-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7fbd/11436028/2f77c3e93276/vaccines-12-01065-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7fbd/11436028/11d4ab8bd453/vaccines-12-01065-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7fbd/11436028/bd1ab8f59efe/vaccines-12-01065-g002a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7fbd/11436028/f43411a61190/vaccines-12-01065-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7fbd/11436028/9d5ca3a29692/vaccines-12-01065-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7fbd/11436028/6c5fb07baf91/vaccines-12-01065-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7fbd/11436028/2f77c3e93276/vaccines-12-01065-g006.jpg

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本文引用的文献

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Bacillus Calmette-Guérin (BCG) Revaccination and Protection Against Tuberculosis: A Systematic Review.卡介苗(BCG)再接种与结核病预防:一项系统评价
Cureus. 2024 Mar 21;16(3):e56643. doi: 10.7759/cureus.56643. eCollection 2024 Mar.
2
cell-wall and antimicrobial peptides: a mission impossible?细胞壁与抗菌肽:Mission Impossible?
Front Immunol. 2023 May 17;14:1194923. doi: 10.3389/fimmu.2023.1194923. eCollection 2023.
3
BCG vaccination induces enhanced humoral responses in elderly individuals.卡介苗接种可增强老年人的体液免疫反应。
Tuberculosis (Edinb). 2023 Mar;139:102320. doi: 10.1016/j.tube.2023.102320. Epub 2023 Jan 31.
4
Efficacy of Bacillus Calmette-Guérin (BCG) Vaccination in Reducing the Incidence and Severity of COVID-19 in High-Risk Population (BRIC): a Phase III, Multi-centre, Quadruple-Blind Randomised Control Trial.卡介苗(BCG)接种对降低高危人群(BRIC)中新冠病毒疾病(COVID-19)发病率和严重程度的疗效:一项III期、多中心、四盲随机对照试验
Infect Dis Ther. 2022 Dec;11(6):2205-2217. doi: 10.1007/s40121-022-00703-y. Epub 2022 Oct 15.
5
Role of Antimicrobial Peptides in Treatment and Prevention of Mycobacterium Tuberculosis: A Review.抗菌肽在结核分枝杆菌治疗和预防中的作用:综述
Int J Pept Res Ther. 2022;28(5):132. doi: 10.1007/s10989-022-10435-9. Epub 2022 Jul 22.
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Tuberculosis in the Elderly.老年人结核病
J Clin Med. 2021 Dec 15;10(24):5888. doi: 10.3390/jcm10245888.
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