Evidence map›Paper›PMID 12496161›Full record

ArticleInfection and immunity2003

Lipooligosaccharide-deficient Neisseria meningitidis shows altered pilus-associated characteristics.

Barbara Albiger, Linda Johansson, Ann-Beth Jonsson

Abstract read
In one paragraph

Article in Infection and immunity, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 pooled it
–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

30 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Internalization ofMicroorganisms · 2025
    Article
  4. Article
  5. Review
  6. Journal of immunology research · 2019
    Article
  7. EF-Tu From Non-typeableFrontiers in immunology · 2018
    Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Relapsing fever Borrelia binds to neolacto glycans and mediates rosetting of human erythrocytes.Proceedings of the National Academy of Sciences of the United States of America · 2009
    Article
  18. Article
  19. Article
  20. Review
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

3 authors.

Barbara AlbigerMicrobiology and Tumor Biology Center, Karolinska Institutet, SE-171 77 Stockholm, Sweden. Barbara.Albiger@mtc.ki.se
Linda Johansson
Ann-Beth Jonsson

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Molecular interaction between host mucosal surfaces and outer membrane components of microbes is crucial in the infection process. The outer membrane of pathogenic Neisseria contains surface molecules such as pili, PilC, and Opa and a monolayer of lipooligosaccharide (LOS), all of which are involved in the interaction with host cells. Pili mediate the initial attachment to human epithelial cells, which is followed by tight contact between bacteria and the eucaryotic cells, leading to bacterial invasion. To further examine the basis for bacterium-host cell contact, we constructed an LOS-deficient Neisseria meningitidis serogroup C mutant. LOS deficiency was without exception accompanied by altered colony opacity and morphology, which most likely represented an "on" switch for Opa540 expression, and by reduced levels of the iron-regulated proteins FetA and FbpA. We show here that LOS is essential for pilus-associated adherence but dispensable for fiber formation and twitching motility. The absence of attachment to epithelial cells could not be attributed to altered levels of piliation or defects in the pilus adhesion phenotype. Further, LOS mutants do not invade host cells and have lost the natural competence for genetic transformation.

Indexed as

Bacterial AdhesionMutationAcyltransferasesBacterial ProteinsFimbriae, BacterialFimbriae ProteinsGene Expression Regulation, BacterialHumansLipopolysaccharidesNeisseria meningitidis, Serogroup CTransformation, GeneticTumor Cells, CulturedAcyltransferasesBacterial ProteinsFimbriae Proteinslipid-linked oligosaccharidesLipopolysaccharides

Identifiers

PMID12496161
PMCPMC143165

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.