Evidence map›Paper›PMID 20721666›Full record

ArticleCurrent microbiology2011

Increased immunogenicity to LipL32 of Leptospira interrogans when expressed as a fusion protein with the cholera toxin B subunit.

Alejandra Habarta, Patricia A E Abreu, Noelia Olivera, Pricila Hauk, Maia T Cédola, María F Ferrer, Paulo L Ho, Ricardo M Gomez

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Article in Current microbiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
1.7field-weighted citation impact, top 20% 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

9 citing papers in PubMed, 20 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

8 authors at 2 institutions in 2 countries.

Alejandra HabartaInstituto de Biotecnología y Biología Molecular, Centro Científico Tecnológico CONICET La Plata, La Plata, Argentina.
Patricia A E Abreu
Noelia Olivera
Pricila Hauk
Maia T Cédola
María F Ferrer
Paulo L Ho
Ricardo M Gomez
Instituto de Biotecnología y Biología Molecular · ARInstituto Butantan · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Leptospirosis is one of the most widespread zoonosis in the world. The development of a recombinant leptospira vaccine remains a challenge. In this study, we cloned the Leptospira interrogans open reading frame (ORF) coding the external membrane protein LipL32, an immunodominant antigen found in all pathogenic leptospira, downstream of the highly immunogenic cholera toxin B subunit (CTB) ORF. Expression and assembly of the CTB-LipL32 fusion protein into oligomeric structures of pentameric size were observed in soluble fractions by Western blot analysis. The CTB-LipL32 protein demonstrated strong affinity for monosialotetrahexosylgaglioside (GM1-ganglioside) in an enzyme-linked immunosorbent assay (ELISA), suggesting that the antigenic sites for binding and proper folding of the pentameric CTB structure were conserved. Furthermore, antisera against LipL32 also recognized the CTB-LipL32 fusion protein, suggesting that LipL32 also conserved its antigenic sites, a fact confirmed by an ELISA assay showing soluble CTB-LipL32 recognition by sera from convalescent patients. In addition, soluble CTB-LipL32 generated higher specific titers in mice immunized without external adjuvant than co-administration of CTB with LipL32. The data presented here provide support for CTB-LipL32 as a promising antigen for use in the control and study of leptospirosis.

Indexed as

AnimalsAntibodies, BacterialBacterial Outer Membrane ProteinsBacterial VaccinesBlotting, WesternCholera ToxinEnzyme-Linked Immunosorbent AssayFemaleG(M1) GangliosideLeptospira interrogansLipoproteinsMiceMice, Inbred BALB CProtein BindingProtein MultimerizationRecombinant Fusion ProteinsAntibodies, BacterialBacterial Outer Membrane ProteinsBacterial VaccinesCholera ToxinG(M1) GangliosideLipL32 protein, LeptospiraLipoproteinsRecombinant Fusion ProteinsVaccines, Synthetic

Identifiers

PMID20721666
OpenAlexW2019103762

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.