Evidence map›Paper›PMID 22379066›Full record

ArticleClinical and vaccine immunology : CVI2012

Protection against lethal leptospirosis after vaccination with LipL32 coupled or coadministered with the B subunit of Escherichia coli heat-labile enterotoxin.

André A Grassmann, Samuel R Félix, Carolina Ximendes dos Santos, Marta G Amaral, Amilton C P Seixas Neto, Michel Q Fagundes, Fabiana K Seixas, Everton F da Silva, Fabricio R Conceição, Odir A Dellagostin

Abstract read
In one paragraph

Article in Clinical and vaccine immunology : CVI, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
–field-weighted citation impact
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

26 citing papers in PubMed.

  1. Advances in the development of a vaccine for the prevention of human leptospirosis: a review.Revista do Instituto de Medicina Tropical de Sao Paulo · 2026
    Review
  2. Article
  3. Article
  4. Review
  5. Article
  6. Vaccination WithFrontiers in cellular and infection microbiology · 2022
    Article
  7. Article
  8. Vaccine potential of LenA and LcpA proteins ofIranian journal of microbiology · 2019
    Article
  9. Article
  10. Article
  11. Advances & challenges in leptospiral vaccine development.The Indian journal of medical research · 2018
    Review
  12. Article
  13. Review
  14. Spirochetal Lipoproteins and Immune Evasion.Frontiers in immunology · 2017
    Review
  15. Article
  16. Review
  17. Article
  18. Review
  19. Article
  20. Article
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.

André A GrassmannUnidade de Biotecnologia, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, Brazil.
Samuel R Félix
Carolina Ximendes dos Santos
Marta G Amaral
Amilton C P Seixas Neto
Michel Q Fagundes
Fabiana K Seixas
Everton F da Silva
Fabricio R Conceição
Odir A Dellagostin

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Leptospirosis, a worldwide zoonosis, lacks an effective, safe, and cross-protective vaccine. LipL32, the most abundant, immunogenic, and conserved surface lipoprotein present in all pathogenic species of Leptospira, is a promising antigen candidate for a recombinant vaccine. However, several studies have reported a lack of protection when this protein is used as a subunit vaccine. In an attempt to enhance the immune response, we used LipL32 coupled to or coadministered with the B subunit of the Escherichia coli heat-labile enterotoxin (LTB) in a hamster model of leptospirosis. After homologous challenge with 5× the 50% lethal dose (LD(50)) of Leptospira interrogans, animals vaccinated with LipL32 coadministered with LTB and LTB::LipL32 had significantly higher survival rates (P < 0.05) than animals from the control group. This is the first report of a protective immune response afforded by a subunit vaccine using LipL32 and represents an important contribution toward the development of improved leptospirosis vaccines.

Indexed as

AnimalsBacterial Outer Membrane ProteinsBacterial ToxinsBacterial VaccinesCricetinaeDisease Models, AnimalEnterotoxinsEscherichia coli ProteinsFemaleLeptospira interrogansLeptospirosisLipoproteinsSurvival AnalysisVaccinationVaccines, SubunitVaccines, SyntheticBacterial Outer Membrane ProteinsBacterial ToxinsBacterial VaccinesEnterotoxinsEscherichia coli Proteinsheat-labile enterotoxin, E coliLipL32 protein, LeptospiraLipoproteinsVaccines, SubunitVaccines, Synthetic

Identifiers

PMID22379066
PMCPMC3346321

What OpenQuestion holds

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Registered trials

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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.