Evidence map›Paper›PMID 25090957›Full record

ArticleAntonie van Leeuwenhoek2014

Characterization of lipoteichoic acid structures from three probiotic Bacillus strains: involvement of D-alanine in their biological activity.

Romain Villéger, Naima Saad, Karine Grenier, Xavier Falourd, Loïc Foucat, Maria C Urdaci, Philippe Bressollier, Tan-Sothea Ouk

Open access · hybridAbstract read
In one paragraph

Article in Antonie van Leeuwenhoek, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.8field-weighted citation impact, top 14% 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

15 citing papers in PubMed, 42 citations in OpenAlex.

  1. Review
  2. Biomolecules · 2025
    Article
  3. Article
  4. Article
  5. NeutralizingACS omega · 2024
    Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Inflammatory Response to Different Toxins in Experimental Sepsis Models.International journal of molecular sciences · 2019
    Review
  12. Article
  13. Article
  14. Article
  15. 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

8 authors at 2 institutions in 1 country.

Romain VillégerLaboratoire de Chimie des Substances Naturelles, EA 1069, Antenne IUT, Département Génie Biologique, Allée André Maurois, 87065, Limoges, France.
Naima Saad
Karine Grenier
Xavier Falourd
Loïc Foucat
Maria C Urdaci
Philippe Bressollier
Tan-Sothea Ouk
Université de Bordeaux · FRBiopolymères Interactions Assemblages · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Probiotics represent a potential strategy to influence the host's immune system thereby modulating immune response. Lipoteichoic Acid (LTA) is a major immune-stimulating component of Gram-positive cell envelopes. This amphiphilic polymer, anchored in the cytoplasmic membrane by means of its glycolipid component, typically consists of a poly (glycerol-phosphate) chain with D-alanine and/or glycosyl substitutions. LTA is known to stimulate macrophages in vitro, leading to secretion of inflammatory mediators such as Nitric Oxide (NO). This study investigates the structure-activity relationship of purified LTA from three probiotic Bacillus strains (Bacillus cereus CH, Bacillus subtilis CU1 and Bacillus clausii O/C). LTAs were extracted from bacterial cultures and purified. Chemical modification by means of hydrolysis at pH 8.5 was performed to remove D-alanine. The molecular structure of native and modified LTAs was determined by (1)H NMR and GC-MS, and their inflammatory potential investigated by measuring NO production by RAW 264.7 macrophages. Structural analysis revealed several differences between the newly characterized LTAs, mainly relating to their D-alanylation rates and poly (glycerol-phosphate) chain length. We observed induction of NO production by LTAs from B. subtilis and B. clausii, whereas weaker NO production was observed with B. cereus. LTA dealanylation abrogated NO production independently of the glycolipid component, suggesting that immunomodulatory potential depends on D-alanine substitutions. D-alanine may control the spatial configuration of LTAs and their recognition by cell receptors. Knowledge of molecular mechanisms behind the immunomodulatory abilities of probiotics is essential to optimize their use.

Indexed as

AlanineAnimalsBacillusCell LineGas Chromatography-Mass SpectrometryHydrolysisImmunologic FactorsLipopolysaccharidesMacrophagesMagnetic Resonance SpectroscopyMiceMolecular StructureNitric OxideProbioticsStructure-Activity RelationshipTeichoic AcidsAlanineImmunologic FactorsLipopolysaccharideslipoteichoic acidNitric OxideTeichoic Acids

Identifiers

PMID25090957
PMCPMC4158176
OpenAlexW2010080912

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.