Evidence map›Paper›PMID 34491462›Full record

ArticleGlycoconjugate journal2021

Cross-reactivity of Haemophilus influenzae type a and b polysaccharides: molecular modeling and conjugate immunogenicity studies.

Nicole I Richardson, Michelle M Kuttel, Frank St Michael, Chantelle Cairns, Andrew D Cox, Neil Ravenscroft

Abstract read
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In one paragraph

Article in Glycoconjugate journal, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
0.8field-weighted citation impact, top 28% 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

5 citing papers in PubMed, 6 citations in OpenAlex.

  1. Article
  2. Article
  3. Report ofPediatric investigation · 2023
    Article
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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

6 authors at 2 institutions in 2 countries.

Nicole I RichardsonDepartment of Chemistry, University of Cape Town, Rondebosch, 7701, South Africa.ORCID http://orcid.org/0000-0002-9414-3293
Michelle M KuttelDepartment of Computer Science, University of Cape Town, Rondebosch, 7701, South Africa.ORCID http://orcid.org/0000-0003-0554-4632
Frank St MichaelVaccine and Emerging Infections Research, Human Health Therapeutics Research Centre, National Research Council, Ottawa, ON, K1A 0R6, Canada.
Chantelle CairnsVaccine and Emerging Infections Research, Human Health Therapeutics Research Centre, National Research Council, Ottawa, ON, K1A 0R6, Canada.
Andrew D CoxVaccine and Emerging Infections Research, Human Health Therapeutics Research Centre, National Research Council, Ottawa, ON, K1A 0R6, Canada.ORCID http://orcid.org/0000-0002-8397-9271
Neil RavenscroftDepartment of Chemistry, University of Cape Town, Rondebosch, 7701, South Africa. neil.ravenscroft@uct.ac.za.ORCID http://orcid.org/0000-0001-8476-5630
National Research Council Canada · CAUniversity of Cape Town · ZA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Haemophilus influenzae is a leading cause of meningitis disease and mortality, particularly in young children. Since the introduction of a licensed conjugate vaccine (targeting the outer capsular polysaccharide) against the most prevalent serotype, Haemophilus influenzae serotype b, the epidemiology of the disease has changed and Haemophilus influenzae serotype a is on the rise, especially in Indigenous North American populations. Here we apply molecular modeling to explore the preferred conformations of the serotype a and b capsular polysaccharides as well as a modified hydrolysis resistant serotype b polysaccharide. Although both serotype b and the modified serotype b have similar random coil behavior, our simulations reveal some differences in the polysaccharide conformations and surfaces which may impact antibody cross-reactivity between these two antigens. Importantly, we find significant conformational differences between the serotype a and b polysaccharides, indicating a potential lack of cross-reactivity that is corroborated by immunological data showing little recognition or killing between heterologous serotypes. These findings support the current development of a serotype a conjugate vaccine.

Indexed as

Haemophilus InfectionsHaemophilus influenzae type bHaemophilus VaccinesAntibodies, BacterialChildChild, PreschoolHaemophilus influenzaeHumansInfantPolysaccharidesPolysaccharides, BacterialVaccines, ConjugateAntibodies, BacterialHaemophilus VaccinesPolysaccharidesPolysaccharides, BacterialVaccines, ConjugateCapsular polysaccharideConformationCross protectionHaemophilus influenzae type aImmunogenicityMolecular modeling

Identifiers

PMID34491462
OpenAlexW3196932605

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.