Evidence map›Paper›PMID 18715925›Full record

ArticleJournal of virology2008

Hidden virulence determinants in a viral quasispecies in vivo.

Marta Sanz-Ramos, Fayna Díaz-San Segundo, Cristina Escarmís, Esteban Domingo, Noemí Sevilla

Open access · greenAbstract read
In one paragraph

Article in Journal of virology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed, 1 pooled it
15.0field-weighted citation impact, top 1% 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

38 citing papers in PubMed, 1 synthesis or guideline pooled it, 73 citations in OpenAlex.

  1. Guideline
  2. A Japanese encephalitis virus biological clone with anThe Journal of general virology · 2025
    Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Review
  10. Quasispecies and virus.European biophysics journal : EBJ · 2018
    Review
  11. Review
  12. Article
  13. Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Viral population dynamics and virulence thresholds.Current opinion in microbiology · 2012
    Review
  19. Viral quasispecies evolution.Microbiology and molecular biology reviews : MMBR · 2012
    Review
  20. 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 at 5 institutions in 1 country.

Marta Sanz-RamosCentro de Biología Molecular Severo Ochoa, Universidad Autónoma de Madrid, Cantoblanco, Madrid 28049, Spain.
Fayna Díaz-San Segundo
Cristina Escarmís
Esteban Domingo
Noemí Sevilla
Centro de Biología Molecular Severo Ochoa · ESCentro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas · ESCentro de Investigación en Sanidad AnimalCentro Regional de Selección y Reproducción Animal · ESUniversidad Autónoma de Madrid · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The characterization of virulence determinants of pathogenic agents is of utmost relevance for the design of disease control strategies. So far, two classes of virulence determinants have been characterized for viral populations: those imprinted in the nucleotide sequence of some specific genomic regions and those that depend on the complexity of the viral population as such. Here we provide evidence of a virulence determinant that depends neither on a genomic sequence nor on detectable differences in population complexity. Foot-and-mouth disease virus is lethal for C57BL/6 mice showing the highest viral load in pancreas. Virus isolated from pancreas after one passage in mice showed an attenuated phenotype, with no lethality even at the highest dose tested. By contrast, virus from sera of the same mice displayed a virulence similar to that of the parental wild-type clone and virus isolated from spleen displayed an intermediate phenotype. However, viral populations from pancreas, spleen, and serum showed indistinguishable consensus genomic nucleotide sequences and mutant spectrum complexities, as quantified according to the mutation frequencies of both entire genomic nucleotide sequences of biological clones. The results show that the populations with differing virulences cannot be distinguished either by the consensus sequence or by the average complexity of the mutant spectrum. Differential harvesting of virus generated by cell transfection of RNA from serum and pancreas failed to reveal genetic differences between subpopulations endowed with differing virulences. In addition to providing evidence of hidden virulence determinants, this study underlines the capacity of a clone of an RNA virus to rapidly diversify phenotypically in vivo.

Indexed as

Amino Acid SubstitutionAnimalsFemaleFoot-and-Mouth Disease VirusLungMiceMice, Inbred C57BLPancreasPoint MutationRNA, ViralSequence Analysis, DNASerumSpleenSurvival AnalysisVirulenceVirulence FactorsRNA, ViralVirulence Factors

Identifiers

PMID18715925
PMCPMC2573215
OpenAlexW2117601660

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.