Evidence map›Paper›PMID 20739502›Full record

ArticleClinical and vaccine immunology : CVI2010

Immunogenicity of an autogenous Streptococcus suis bacterin in preparturient sows and their piglets in relation to protection after weaning.

Christoph Georg Baums, Christian Brüggemann, Christoph Kock, Andreas Beineke, Karl-Heinz Waldmann, Peter Valentin-Weigand

Open access · diamondAbstract read
In one paragraph

Article in Clinical and vaccine immunology : CVI, 2010. 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
0.6field-weighted citation impact, top 24% 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

26 citing papers in PubMed, 48 citations in OpenAlex.

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  13. Neutrophils inMicroorganisms · 2021
    Review
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  19. Review
  20. Field studies evaluating the direct, indirect, total, and overall efficacy ofThe Canadian veterinary journal = La revue veterinaire canadienne · 2019
    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

6 authors at 1 institution in 1 country.

Christoph Georg BaumsStiftung Tierärztliche Hochschule Hannover, Zentrum für Infektionsmedizin, Institut für Mikrobiologie, Bischofsholer Damm 15, Hannover, Germany. christoph.baums@gmx.de
Christian Brüggemann
Christoph Kock
Andreas Beineke
Karl-Heinz Waldmann
Peter Valentin-Weigand
University of Veterinary Medicine Hannover, Foundation · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Streptococcus suis is an important porcine pathogen causing meningitis and other invasive diseases in piglets of different ages. Application of S. suis serotype 2 bacterins to specific-pathogen-free (SPF) weaning piglets has been demonstrated to protect against the homologous serotype. However, autogenous S. suis bacterins are also applied to sows and suckling piglets in the field. Therefore, comparative evaluation of different bacterin immunization regimes, including sow vaccination, was performed in this study. The main objectives were to determine the immunogenicity of an S. suis bacterin in sows prepartum and its influence on active immunization of piglets. Experimental infection of 6- and 8-week-old weaning piglets was performed to elucidate protective efficacies. Humoral immune responses were investigated by an enzyme-linked immunosorbent assay (ELISA) measuring muramidase-released protein (MRP)-specific IgG titers and by opsonophagocytosis assays. Bacterin application elicited high MRP-specific IgG titers in the serum and colostrum of sows, as well as opsonizing antibodies. Piglets from vaccinated sows had significantly higher MRP-specific titers than respective piglets from nonvaccinated sows until 6 weeks postpartum. Vaccination of suckling piglets did not result in high MRP-specific titers nor in induction of opsonizing antibodies. Furthermore, neither vaccination of suckling nor of weaning piglets from immunized sows was associated with a prominent active immune response and protection at 8 weeks postpartum. However, protection was observed in respective 6-week-old weaning piglets, most likely because of protective maternal immunity. In conclusion, this study provides the first results suggesting protective passive maternal immunity for S. suis serotype 2 after bacterin vaccination of sows and a strong inhibitory effect on active immunization of suckling and weaning piglets, leading to highly susceptible growers.

Indexed as

AnimalsAntibodies, BacterialAntigens, BacterialBacterial ProteinsBacterial VaccinesBloodColostrumEnzyme-Linked Immunosorbent AssayFemaleImmunity, Maternally-AcquiredImmunoglobulin GOpsonin ProteinsPregnancyStreptococcal InfectionsStreptococcus suisSwineAntibodies, BacterialAntigens, BacterialBacterial ProteinsBacterial VaccinesImmunoglobulin GMRP protein, Streptococcus suisOpsonin Proteins

Identifiers

PMID20739502
PMCPMC2953004
OpenAlexW2112732898

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.