Evidence map›Paper›PMID 20862314›Full record

ArticlePLoS pathogens2010

Generation of genic diversity among Streptococcus pneumoniae strains via horizontal gene transfer during a chronic polyclonal pediatric infection.

N Luisa Hiller, Azad Ahmed, Evan Powell, Darren P Martin, Rory Eutsey, Josh Earl, Benjamin Janto, Robert J Boissy, Justin Hogg, Karen Barbadora and 5 more

Open access · goldAbstract read
In one paragraph

Article in PLoS pathogens, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 92 papers.

0numbers the graph read from it
0cells of the map it votes in
92citing papers in PubMed
9.1field-weighted citation impact, top 2% 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

92 citing papers in PubMed, 138 citations in OpenAlex.

  1. RggmBio · 2026
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  2. Virulence diversity amongJournal of oral microbiology · 2026
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  7. Infection and immunity · 2024
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  11. Repeat sequences limit the effectiveness of lateral gene transfer and favored the evolution of meiotic sex in early eukaryotes.Proceedings of the National Academy of Sciences of the United States of America · 2022
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  14. Intra-Species Interactions inFrontiers in cellular and infection microbiology · 2021
    Article
  15. Review
  16. Review
  17. Article
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  19. Article
  20. Article

32 more citing papers are in PubMed but not listed here.

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

15 authors at 6 institutions in 2 countries.

N Luisa HillerAllegheny General Hospital, Allegheny-Singer Research Institute, Center for Genomic Sciences, Pittsburgh, Pennsylvania, United States of America.
Azad Ahmed
Evan Powell
Darren P Martin
Rory Eutsey
Josh Earl
Benjamin Janto
Robert J Boissy
Justin Hogg
Karen Barbadora
Rangarajan Sampath
Shaun Lonergan
J Christopher Post
Fen Z Hu
Garth D Ehrlich
Allegheny General Hospital · USAllegheny College · USIonis Pharmaceuticals (United States) · USChildren's Hospital of Pittsburgh · USUniversity of Cape Town · ZAUniversity of Nebraska Medical Center · US

Funding

YEAST ER MOLECULAR CHAPERONE TRANSLOCATION: GENOME DATABANK HOMOLOGSP41RR006009 · NCRR · MELLON PITTS CORPORATION (MPC CORP) · PI BLOOD, PHILIP D · 1990 to 2011
$22.0M
THE ROLE OF BIOFILMS IN THE PATHOGENESIS OF OTORRHEAR01DC004173 · NIDCD · ALLEGHENY-SINGER RESEARCH INSTITUTE · PI EHRLICH, GARTH D. · 2000 to 2008
$7.0M
MOLECULAR ANALYSIS OF PATHOGENS IN OTITIS MEDIA BY PCRR01DC002148 · NIDCD · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI EHRLICH, GARTH D. · 1994 to 2017
$6.5M
Pneumococcal Biofilms in Otitis MediaR01DC005659 · NIDCD · ALLEGHENY-SINGER RESEARCH INSTITUTE · PI POST, JAMES CHRISTOPHER · 2003 to 2007
$3.1M
Impact of Antibiotics and Vaccines on the in vivo Evolution of S. pneumoniaeR01AI080935 · NIAID · ALLEGHENY-SINGER RESEARCH INSTITUTE · PI EHRLICH, GARTH D. · 2009 to 2010
$1.3M
NCRR NIH HHS P41 RR006009NIAID NIH HHS AI080935NIAID NIH HHS R01 AI080935NIDCD NIH HHS DC02148NIDCD NIH HHS DC04173NIDCD NIH HHS DC05659NIDCD NIH HHS R01 DC002148NIDCD NIH HHS R01 DC004173NIDCD NIH HHS R01 DC005659Wellcome Trust
6 · The paper itself

Abstract

Although there is tremendous interest in understanding the evolutionary roles of horizontal gene transfer (HGT) processes that occur during chronic polyclonal infections, to date there have been few studies that directly address this topic. We have characterized multiple HGT events that most likely occurred during polyclonal infection among nasopharyngeal strains of Streptococcus pneumoniae recovered from a child suffering from chronic upper respiratory and middle-ear infections. Whole genome sequencing and comparative genomics were performed on six isolates collected during symptomatic episodes over a period of seven months. From these comparisons we determined that five of the isolates were genetically highly similar and likely represented a dominant lineage. We analyzed all genic and allelic differences among all six isolates and found that all differences tended to occur within contiguous genomic blocks, suggestive of strain evolution by homologous recombination. From these analyses we identified three strains (two of which were recovered on two different occasions) that appear to have been derived sequentially, one from the next, each by multiple recombination events. We also identified a fourth strain that contains many of the genomic segments that differentiate the three highly related strains from one another, and have hypothesized that this fourth strain may have served as a donor multiple times in the evolution of the dominant strain line. The variations among the parent, daughter, and grand-daughter recombinant strains collectively cover greater than seven percent of the genome and are grouped into 23 chromosomal clusters. While capturing in vivo HGT, these data support the distributed genome hypothesis and suggest that a single competence event in pneumococci can result in the replacement of DNA at multiple non-adjacent loci.

Indexed as

Genetic VariationGenome, BacterialAllelesChronic DiseaseGene Expression Regulation, BacterialGene Transfer, HorizontalHumansInfantMucous MembranePhylogenyPneumococcal InfectionsPolymorphism, Single NucleotideRecombination, GeneticRespiratory Tract InfectionsStreptococcus pneumoniae

Identifiers

PMID20862314
PMCPMC2940740
OpenAlexW2086353714

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.