Evidence map›Paper›PMID 21059957›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2011

At the crossroads of vaginal health and disease, the genome sequence of Lactobacillus iners AB-1.

Jean M Macklaim, Gregory B Gloor, Kingsley C Anukam, Sarah Cribby, Gregor Reid

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 135 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
135citing papers in PubMed, 3 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

135 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
  2. Contribution ofFrontiers in cellular and infection microbiology · 2021
    Pooled it
  3. Pooled it
  4. Trial
  5. Trial
  6. Trial
  7. Trial
  8. Vaginal formulations selectively target Lactobacillus iners and Candida spp. while preserving Lactobacillus crispatus.International microbiology : the official journal of the Spanish Society for Microbiology · 2026
    Article
  9. Utilizing natural competence to genetically manipulateApplied and environmental microbiology · 2026
    Article
  10. Article
  11. VaginalMicroorganisms · 2026
    Article
  12. Review
  13. Article
  14. Review
  15. Article
  16. Review
  17. mSystems · 2025
    Article
  18. Review
  19. Review
  20. Article

75 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

5 authors.

Jean M MacklaimCanadian Research and Development Centre for Probiotics, The Lawson Health Research Institute, London, ON, Canada.
Gregory B Gloor
Kingsley C Anukam
Sarah Cribby
Gregor Reid

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Lactobacilli have long been regarded as important constituents of the healthy human vagina. Lactobacillus iners is the most frequently detected bacterial species in the vagina, but little is known about its characteristics. We report a description of the whole-genome sequence of L. iners AB-1 along with comparative analysis of published genomes of closely related strains of lactobacilli. The genome is the smallest Lactobacillus reported to date, with a 1.3-Mbp single chromosome. The genome seems to have undergone one or more rapid evolution events that resulted in large-scale gene loss and horizontal acquisition of a number of genes for survival in the vagina. L. iners may exhibit specialized adaptation mechanisms to the vaginal environment, such as an iron-sulfur cluster assembly system, and several unique σ factors to regulate gene transcription in this fluctuating environment. A potentially highly expressed homolog of a cholesterol-binding lysin may also contribute to host cell adhesion or act as a defense mechanism against other microbes. Notably, there is a lack of apparent adhesion proteins, but several cell-anchor proteins were identified and may be important for interaction with the host mucosal tissues. L. iners is widely present in healthy females as well as those suffering from bacterial vaginosis or who have undergone antimicrobial therapy, suggesting that it is an important indigenous species of the vagina.

Indexed as

Adaptation, BiologicalAmino Acid SequenceCell Adhesion MoleculesFemaleGenome, BacterialHumansImmunohistochemistryLactobacillusMicroscopy, ElectronMolecular Sequence DataSequence Analysis, DNASpecies SpecificityVaginaCell Adhesion Molecules

Identifiers

PMID21059957
PMCPMC3063587

What OpenQuestion holds

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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.