Evidence map›Paper›PMID 26150937›Full record

ArticleMethodsX2014

Standardized chemical synthesis of Pseudomonas aeruginosa pyocyanin.

Rajkumar Cheluvappa

Open access · goldAbstract read
In one paragraph

Article in MethodsX, 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
1.4field-weighted citation impact, top 19% 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, 45 citations in OpenAlex.

  1. Discovery of a phenazine-thiol conjugase from sparse data using genome-informed machine learning.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  2. Optimization of Pyocyanin Production byAntibiotics (Basel, Switzerland) · 2026
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. The two faces of pyocyanin - why and how to steer its production?World journal of microbiology & biotechnology · 2023
    Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Computationally designed pyocyanin demethylase acts synergistically with tobramycin to kill recalcitrantProceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  13. Article
  14. Review
  15. 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

1 author at 1 institution in 1 country.

Rajkumar CheluvappaDepartment of Medicine, St. George Clinical School, University of New South Wales, Sydney, NSW, Australia.
UNSW Sydney · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Preparation of the toxin pyocyanin from the bacterium Pseudomonas aeruginosa is an exacting procedure. Pyocyanin is expensive to commercially purchase. The sellers do not give out the extraction procedure. Classically, pyocyanin preparation involves complicated multi-step P. aeruginosa culturing and solvent transfer extractions. The chemical synthesis first used (1979) has not been adequately described. We devised an easily reproducible protocol which consistently decreases the time taken for synthesis, extraction and purification of pyocyanin, and increases the pure pyocyanin proportion produced. Our procedure:•Involves more purification steps (chloroform/methanol/acidification/alkalinization).•Starts with a different pH (7.4 instead of 7), and lesser concentration of phenazine methosulfate; and retrenches a rotary evaporation step.•Removes 2 lyophilization steps, and entails different solvent proportions for thin layer chromatography. As we have extracted pyocyanin both from P. aeruginosa cultures, and via chemical synthesis; we know the procedural and product-quality differences. We endorse the relative ease, safety, and convenience of using the chemical synthesis described here. Crucially, our "naturally endotoxin-free" pyocyanin can be extracted easily without using infectious bacteria.

Indexed as

GlutathioneLiver sinusoidal endothelial cellsPhenazine methosulfatePseudomonas aeruginosaPyocyanin

Identifiers

PMID26150937
PMCPMC4472851
OpenAlexW2016749625

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.