Evidence map›Paper›PMID 14713314›Full record

ArticleBMC microbiology2004

Restricted changes in major surface protein-2 (msp2) transcription after prolonged in vitro passage of Anaplasma phagocytophilum.

Diana G Scorpio, Karen Caspersen, Hiroyuki Ogata, Jinho Park, J Stephen Dumler

Abstract read
In one paragraph

Article in BMC microbiology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
–field-weighted citation impact
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

18 citing papers in PubMed.

  1. Article
  2. Crystal structures of Escherichia coli glucokinase and insights into phosphate binding.Acta crystallographica. Section F, Structural biology communications · 2025
    Article
  3. Frontiers in public health · 2020
    Article
  4. Frontiers in immunology · 2018
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. 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

5 authors.

Diana G ScorpioDivision of Medical Microbiology, Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. dscorpio@jhmi.edu
Karen Caspersen
Hiroyuki Ogata
Jinho Park
J Stephen Dumler

Funding

EHRLICHIA-GRANULOCYTE INTERACTIONS AND INFECTIONR01AI044102 · NIAID · UNIVERSITY OF MARYLAND BALTIMORE · PI DUMLER, JOHN STEPHEN · 2000 to 2019
$5.3M
Training Veterinarians for Careers in Biomedical ResearchT32RR007002 · NCRR · JOHNS HOPKINS UNIVERSITY · PI ZINK, M CHRISTINE · 1985 to 2011
$4.4M
NCRR NIH HHS RR07002NCRR NIH HHS T32 RR007002NIAID NIH HHS R01 AI044102NIAID NIH HHS R01-AI44102
6 · The paper itself

Abstract

backgroundAnaplasma phagocytophilum strains often vary in Msp2 expression, a situation assumed to be related to immune evasion. However, Msp2 is also an adhesin, and little is known about the role of endogenous msp2 transcriptional changes in the absence of immune selection. Thus, Msp2 profiles and msp2 transcripts of low passage A. phagocytophilum Webster strain, initially comprised of a single abundant msp2 transcript, were re-examined after > or = 20 in vitro passages without immune selection.

resultsUsing an Msp2 monoclonal antibody, immunoblots revealed an unchanged dominant band and several weak bands that appeared with passage. Similarly, msp2 transcript diversity changed, with a decrease in the initially abundant low passage transcript and appearance of a newly abundant and several minor msp2 transcripts with high passage. BLASTN search of the A. phagocytophilum HZ strain genome revealed > or = 52 msp2 paralogs.

conclusionsMsp2 expression and msp2 transcription modulate even without immune selective pressures. However, the limited diversity of msp2 transcripts in the absence of immune pressure suggests selection for Msp2 by specific functions beyond that of immune evasion, in spite of a large genomic reservoir for Msp2 diversity.

Indexed as

Amino Acid SequenceAnaplasma phagocytophilumBacterial Outer Membrane ProteinsCell DivisionCloning, MolecularDNA, ComplementaryGene Expression Regulation, BacterialGenome, BacterialImmunoblottingMolecular Sequence DataSequence AlignmentSequence Analysis, DNASequence Homology, Amino AcidTranscription, GeneticBacterial Outer Membrane ProteinsDNA, Complementarymsp2 protein, Anaplasma phagocytophilum

Identifiers

PMID14713314
PMCPMC317292

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.