Evidence map›Paper›PMID 25849456›Full record

ArticlePloS one2015

Features of two new proteins with OmpA-like domains identified in the genome sequences of Leptospira interrogans.

Aline F Teixeira, Zenaide M de Morais, Karin Kirchgatter, Eliete C Romero, Silvio A Vasconcellos, Ana Lucia T O Nascimento

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
4.7field-weighted citation impact, top 5% 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

15 citing papers in PubMed, 42 citations in OpenAlex.

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  11. A Review on Host-Frontiers in cellular and infection microbiology · 2021
    Review
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  15. Complement Evasion by PathogenicFrontiers in immunology · 2016
    Review
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

6 authors at 3 institutions in 1 country.

Aline F TeixeiraCentro de Biotecnologia, Instituto Butantan, Sao Paulo, SP, Brazil; Programa de Pós-Graduação Interunidades em Biotecnologia,Instituto de Ciencias Biomedicas, Universidade de Sao Paulo, Sao Paulo, SP, Brazil.
Zenaide M de MoraisLaboratório de Zoonoses Bacterianas, Faculdade de Medicina Veterinária e Zootecnia, Universidade de Sao Paulo, Sao Paulo, SP, Brazil.
Karin KirchgatterNucleo de Estudos em Malária, Superintendência de Controle de Endemias - Instituto de Medicina Tropical, Universidade de Sao Paulo, Sao Paulo, SP, Brazil.
Eliete C RomeroCentro de Bacteriologia, Instituto Adolfo Lutz, Sao Paulo, Brazil.
Silvio A VasconcellosLaboratório de Zoonoses Bacterianas, Faculdade de Medicina Veterinária e Zootecnia, Universidade de Sao Paulo, Sao Paulo, SP, Brazil.
Ana Lucia T O NascimentoCentro de Biotecnologia, Instituto Butantan, Sao Paulo, SP, Brazil; Programa de Pós-Graduação Interunidades em Biotecnologia,Instituto de Ciencias Biomedicas, Universidade de Sao Paulo, Sao Paulo, SP, Brazil.
Universidade de São Paulo · BRInstituto Adolfo Lutz · BRInstituto Butantan · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Leptospirosis is an acute febrile disease caused by pathogenic spirochetes of the genus Leptospira. It is considered an important re-emerging infectious disease that affects humans worldwide. The knowledge about the mechanisms by which pathogenic leptospires invade and colonize the host remains limited since very few virulence factors contributing to the pathogenesis of the disease have been identified. Here, we report the identification and characterization of two new leptospiral proteins with OmpA-like domains. The recombinant proteins, which exhibit extracellular matrix-binding properties, are called Lsa46 - LIC13479 and Lsa77 - LIC10050 (Leptospiral surface adhesins of 46 and 77 kDa, respectively). Attachment of Lsa46 and Lsa77 to laminin was specific, dose dependent and saturable, with KD values of 24.3 ± 17.0 and 53.0 ± 17.5 nM, respectively. Lsa46 and Lsa77 also bind plasma fibronectin, and both adhesins are plasminogen (PLG)-interacting proteins, capable of generating plasmin (PLA) and as such, increase the proteolytic ability of leptospires. The proteins corresponding to Lsa46 and Lsa77 are present in virulent L. interrogans L1-130 and in saprophyte L. biflexa Patoc 1 strains, as detected by immunofluorescence. The adhesins are recognized by human leptospirosis serum samples at the onset and convalescent phases of the disease, suggesting that they are expressed during infection. Taken together, our data could offer valuable information to the understanding of leptospiral pathogenesis.

Indexed as

AnimalsAntibodies, BacterialBacterial Outer Membrane ProteinsGenome, BacterialHumansLeptospira interrogansLeptospirosisMice, Inbred BALB CPhylogenyPlasminogenProtein BindingProtein Structure, TertiaryAntibodies, BacterialBacterial Outer Membrane ProteinsOMPA outer membrane proteinsPlasminogen

Identifiers

PMID25849456
PMCPMC4388678
OpenAlexW2060585132

What OpenQuestion holds

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LicenceCC BY
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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.