Evidence map›Paper›PMID 30934008›Full record

ArticlePloS one2019

Intranasal immunization with recombinant outer membrane protein A induces protective immune response against Stenotrophomonas maltophilia infection.

Yan Li, Xueping Tang, Zunquan Zhao, Hui Wang, Xin Wang, Xueyi Shang, Peng Liu, Zhihua Kou, Yongqiang Jiang, Yan Li

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
1.0field-weighted citation impact, top 27% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed, 6 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 3 institutions in 1 country.

Yan LiNo 307 Hospital of PLA of Anhui Medical University, Hefei, China.
Xueping TangDepartment of Critical Care Medicine, No 307 Hospital of PLA, Beijing, China.
Zunquan ZhaoThe Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing, China.
Hui WangThe Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing, China.
Xin WangDepartment of Critical Care Medicine, No 307 Hospital of PLA, Beijing, China.
Xueyi ShangDepartment of Critical Care Medicine, No 307 Hospital of PLA, Beijing, China.
Peng LiuThe Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing, China.
Zhihua KouThe Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing, China.
Yongqiang JiangThe Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing, China.
Yan LiNo 307 Hospital of PLA of Anhui Medical University, Hefei, China.ORCID 0000-0002-3988-9009
Academy of Military Medical Sciences · CNAnhui Medical University · CN307th Hospital of Chinese People’s Liberation Army · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Stenotrophomonas maltophilia (S. maltophilia), a multi-drug resistant opportunistic pathogen, is associated with nosocomial and community-acquired infections. Preventive and therapeutic strategies for such infections are greatly needed. In this study, sequence alignment analysis revealed that Outer membrane protein A (OmpA) was highly conserved among S. maltophilia strains but shared no significant similarity with human and mouse proteomes. In mice, intranasal immunization with S. maltophilia recombinant OmpA (rOmpA) without additional adjuvant induced sustained mucosal and systemic rOmpA-specific antibody responses. Treatment with rOmpA stimulated significantly higher levels of secretion of IFN-γ, IL-2, and IL-17A (All P<0.05) from the primary splenocytes isolated from rOmpA-immunized mice than from the primary splenocytes isolated from PBS-immunized mice. Furthermore, mice immunized with rOmpA showed significantly reduced bacterial burden in the lung and reduced levels of pro-inflammatory cytokines (TNF-α and IL-6) in bronchoalveolar lavage fluid (BALF) 24 hours after intranasal S. maltophilia infection, indicating that immunization with rOmpA may have protective effects against S. maltophilia challenge in mice. Our findings suggest that intranasal immunization with rOmpA may induce mucosal and systemic immune responses in mice, trigger Th1- and Th17-mediated cellular immune responses, and thus stimulate host immune defense against S. maltophilia infection. These results also demonstrate that intranasal vaccination may offer an alternative approach to current strategies since it induces a mucosal as well as a systemic immune response.

Indexed as

Stenotrophomonas maltophiliaAdjuvants, ImmunologicAdministration, IntranasalAnimalsAntibodies, BacterialAntibody FormationBacterial Outer Membrane ProteinsBacterial VaccinesBronchoalveolar Lavage FluidComputational BiologyFemaleGram-Negative Bacterial InfectionsInterleukin-6MiceMice, Inbred C57BLRecombinant ProteinsAdjuvants, ImmunologicAntibodies, BacterialBacterial Outer Membrane ProteinsBacterial VaccinesInterleukin-6OMPA outer membrane proteinsRecombinant ProteinsTumor Necrosis Factor-alpha

Identifiers

PMID30934008
PMCPMC6443155
OpenAlexW2929616198

What OpenQuestion holds

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Registered trials

None linked

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.