Evidence map›Paper›PMID 32701970›Full record

ArticlePloS one2020

Synergistic effects of Cinnamomum cassia L. essential oil in combination with polymyxin B against carbapenemase-producing Klebsiella pneumoniae and Serratia marcescens.

Nathalie Gaebler Vasconcelos, Júlio Henrique Ferreira de Sá Queiroz, Késia Esther da Silva, Paulo César de Paula Vasconcelos, Julio Croda, Simone Simionatto

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.1field-weighted citation impact, top 26% 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

20 citing papers in PubMed, 35 citations in OpenAlex.

  1. Article
  2. Antimicrobial Resistance: The Answers.British journal of biomedical science · 2026
    Review
  3. Review
  4. Antimicrobial potential of compounds from the MMV pandemic response box and COVID box against carbapenem-resistant Acinetobacter baumannii.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2025
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Antimicrobial activity of cinnamaldehyde against multidrug-resistant Klebsiella pneumoniae: an in vitro and in vivo study.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2023
    Article
  12. Article
  13. In Vitro Antimicrobial Activity ofVeterinary sciences · 2023
    Article
  14. Article
  15. Review
  16. Review
  17. Chemical Composition ofMolecules (Basel, Switzerland) · 2021
    Article
  18. Article
  19. 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

6 authors at 2 institutions in 1 country.

Nathalie Gaebler VasconcelosLaboratório de Pesquisa em Ciências da Saúde, Universidade Federal da Grande Dourados-UFGD, Dourados, Mato Grasso do Sul, Brazil.
Júlio Henrique Ferreira de Sá QueirozLaboratório de Pesquisa em Ciências da Saúde, Universidade Federal da Grande Dourados-UFGD, Dourados, Mato Grasso do Sul, Brazil.
Késia Esther da SilvaLaboratório de Pesquisa em Ciências da Saúde, Universidade Federal da Grande Dourados-UFGD, Dourados, Mato Grasso do Sul, Brazil.
Paulo César de Paula VasconcelosHospital Universitário de Dourados, Universidade Federal da Grande Dourados-UFGD, Dourados, Mato Grosso do Sul, Brazil.
Julio CrodaLaboratório de Pesquisa em Ciências da Saúde, Universidade Federal da Grande Dourados-UFGD, Dourados, Mato Grasso do Sul, Brazil.
Simone SimionattoLaboratório de Pesquisa em Ciências da Saúde, Universidade Federal da Grande Dourados-UFGD, Dourados, Mato Grasso do Sul, Brazil.ORCID 0000-0003-2367-0915
Universidade Federal da Grande Dourados · BRUniversidade Federal de Mato Grosso do Sul · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Multidrug resistance prompts the search for new sources of antibiotics with new targets at bacteria cell. To investigate the antibacterial activity of Cinnamomum cassia L. essential oil (CCeo) alone and in combination with antibiotics against carbapenemase-producing Klebsiella pneumoniae and Serratia marcescens. The antimicrobial susceptibility of the strains was determined by Vitek® 2 and confirmed by MALDI-TOF/TOF. The antibacterial activity of CCeo and its synergism with antibiotics was determined using agar disk diffusion, broth microdilution, time-kill, and checkboard methods. The integrity of the bacterial cell membrane in S. marcescens was monitored by protein leakage assay. CCeo exhibited inhibitory effects with MIC = 281.25 μg.mL-1. The association between CCeo and polymyxin B showed a decrease in terms of viable cell counts on survival curves over time after a 4 hour-treatment with a FIC index value of 0.006. Protein leakage was observed with increasing concentrations for CCeo and CCeo + polymyxin B treatments. CCeo showed antibacterial activity against the studied strains. When associated with polymyxin B, a synergistic effect was able to inhibit bacterial growth rapidly and consistently, making it a potential candidate for the development of an alternative treatment and drug delivery system for carbapenemase-producing strains.

Indexed as

Anti-Bacterial AgentsBacterial Proteinsbeta-LactamasesCinnamomum aromaticumDrug Resistance, Multiple, BacterialDrug SynergismHumansKlebsiella InfectionsKlebsiella pneumoniaeOils, VolatilePolymyxin BSerratia InfectionsSerratia marcescensSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationAnti-Bacterial AgentsBacterial Proteinsbeta-LactamasescarbapenemaseOils, VolatilePolymyxin B

Identifiers

PMID32701970
PMCPMC7377461
OpenAlexW3044160945

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.