Evidence map›Paper›PMID 20161973›Full record

ArticleMarine drugs2010

Antimicrobial photodynamic therapy: study of bacterial recovery viability and potential development of resistance after treatment.

Anabela Tavares, Carla M B Carvalho, Maria A Faustino, Maria G P M S Neves, João P C Tomé, Augusto C Tomé, José A S Cavaleiro, Angela Cunha, Newton C M Gomes, Eliana Alves and 1 more

Abstract read
In one paragraph

Article in Marine drugs, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 130 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
130citing 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

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

  1. Pooled it
  2. Trial
  3. Review
  4. Review
  5. Article
  6. Review
  7. Article
  8. Mesoporous FeAdvanced healthcare materials · 2025
    Article
  9. Article
  10. Review
  11. Review
  12. Photoinactivation of Multidrug-ResistantACS applied bio materials · 2024
    Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Porphyrin Photosensitizers Grafted in Cellulose Supports: A Review.International journal of molecular sciences · 2023
    Review
  20. Article

70 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

11 authors.

Anabela TavaresCESAM and Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal. anabelatavares@ua.pt
Carla M B Carvalho
Maria A Faustino
Maria G P M S Neves
João P C Tomé
Augusto C Tomé
José A S Cavaleiro
Angela Cunha
Newton C M Gomes
Eliana Alves
Adelaide Almeida

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Antimicrobial photodynamic therapy (aPDT) has emerged in the clinical field as a potential alternative to antibiotics to treat microbial infections. No cases of microbial viability recovery or any resistance mechanisms against it are yet known. 5,10,15-tris(1-Methylpyridinium-4-yl)-20-(pentafluorophenyl)-porphyrin triiodide (Tri-Py(+)-Me-PF) was used as photosensitizer. Vibrio fischeri and recombinant Escherichia coli were the studied bacteria. To determine the bacterial recovery after treatment, Tri-Py(+)-Me-PF (5.0 microM) was added to bacterial suspensions and the samples were irradiated with white light (40 W m(-2)) for 270 minutes. Then, the samples were protected from light, aliquots collected at different intervals and the bioluminescence measured. To assess the development of resistance after treatment, bacterial suspensions were exposed to white light (25 minutes), in presence of 5.0 microM of Tri-Py(+)-Me-PF (99.99% of inactivation) and plated. After the first irradiation period, surviving colonies were collected from the plate and resuspended in PBS. Then, an identical protocol was used and repeated ten times for each bacterium. The results suggest that aPDT using Tri-Py(+)-Me-PF represents a promising approach to efficiently destroy bacteria since after a single treatment these microorganisms do not recover their viability and after ten generations of partially photosensitized cells neither of the bacteria develop resistance to the photodynamic process.

Indexed as

Drug Resistance, BacterialMicrobial ViabilityPhotochemotherapyAliivibrio fischeriAnti-Bacterial AgentsAnti-Infective AgentsColony Count, MicrobialDose-Response Relationship, RadiationEscherichia coliFluorobenzenesFluorocarbonsGram-Negative BacteriaLightLuminescencePhotosensitizing AgentsPorphyrins5,10,15-tris(1-methylpyridinium-4-yl)-20-(pentafluorophenyl)porphyrin triiodideAnti-Bacterial AgentsAnti-Infective AgentsFluorobenzenesFluorocarbonsPhotosensitizing AgentsPorphyrinsantimicrobial photodynamic therapybacterial resistancebacterial viabilitybioluminescencecationic porphyrin

Identifiers

PMID20161973
PMCPMC2817925

What OpenQuestion holds

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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.