Evidence map›Paper›PMID 24853740›Full record

ArticleBiophysical journal2014

Additive and synergistic membrane permeabilization by antimicrobial (lipo)peptides and detergents.

Hiren Patel, Quang Huynh, Dominik Bärlehner, Heiko Heerklotz

Open access · bronzeAbstract read
In one paragraph

Article in Biophysical journal, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.7field-weighted citation impact, top 17% 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

19 citing papers in PubMed, 43 citations in OpenAlex.

  1. A unified model of transient poration induced by antimicrobial peptides.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  2. Article
  3. Activity and Synergy of Cu-ATCUN Antimicrobial Peptides.International journal of molecular sciences · 2022
    Article
  4. Review
  5. Article
  6. A mini-review: mechanism of antimicrobial action and application of surfactin.World journal of microbiology & biotechnology · 2022
    Review
  7. Article
  8. Article
  9. Review
  10. Review
  11. Article
  12. Article
  13. Review
  14. Review
  15. The Profile and Antimicrobial Activity ofFrontiers in microbiology · 2017
    Article
  16. Article
  17. Article
  18. Article
  19. 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

4 authors at 1 institution in 3 countries.

Hiren PatelLeslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Canada; Department of Biophysics and Chemistry, University of Michigan, Ann Arbor, Michigan.
Quang HuynhLeslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Canada.
Dominik BärlehnerLeslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Canada.
Heiko HeerklotzLeslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Canada; Institut für Medizinische Physik und Biophysik, Universität Leipzig, Leipzig, Germany. Electronic address: heiko.heerklotz@utoronto.ca.
University of Toronto · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Certain antibiotic peptides are thought to permeabilize membranes of pathogens by effects that are also observed for simple detergents, such as membrane thinning and disordering, asymmetric bilayer expansion, toroidal pore formation, and micellization. Here we test the hypothesis that such peptides act additively with detergents when applied in parallel. Additivity is defined analogously to a fractional inhibitory concentration index of unity, and the extent and mechanism of leakage is measured by the fluorescence lifetime-based vesicle leakage assay using calcein-loaded vesicles. Good additivity was found for the concerted action of magainin 2, the fungicidal lipopeptide class of surfactins from Bacillus subtilis QST713, and the detergent octyl glucoside, respectively, with the detergent C12EO8. Synergistic or superadditive action was observed for fengycins from B. subtilis, as well as the detergent CHAPS, when combined with C12EO8. The results illustrate two mechanisms of synergistic action: First, maximal leakage requires an optimum degree of heterogeneity in the system that may be achieved by mixing a graded with an all-or-none permeabilizer. (The optimal perturbation should be focused to certain defect structures, yet not to the extent that some vesicles are not affected at all.) Second, a cosurfactant may enhance the bioavailability of a poorly soluble peptide. The results are important for understanding the concerted action of membrane-permeabilizing compounds in biology as well as for optimizing formulations of such antimicrobials for medical applications or crop protection.

Indexed as

Amino Acid SequenceAntimicrobial Cationic PeptidesBacillus subtilisCell Membrane PermeabilityDetergentsDrug SynergismGlucosidesLipopeptidesMagaininsMicellesThermodynamicsAntimicrobial Cationic PeptidesDetergentsfengycinGlucosidesLipopeptidesMagaininsMicellesoctyl-beta-D-glucoside

Identifiers

PMID24853740
PMCPMC4064529
OpenAlexW2089423130

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.