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Updated: Jul 19, 2026

Qualitative and Quantitative Analysis of Siderophore Production from Pseudomonas aeruginosa
Published on: March 15, 2024
[Effect of andrographolide on QS regulating virulence factors production in Pseudomonas aeruginosa]
Hong-tao Li1, Hui-min Qin, Wei-hua Wang
1Tongji Hospital, Huazhong University of Science and Technology, Wuhan 430030, China.
Objective:
To investigate the effect of andrographolide on virulence factors production in Pseudomonas aeruginosa.
Method:
Growth rate, pyocyanin, proteolytic activity and elastase activity were measured with or without the presence of andrographolide. The effect of andrographolide on pyocyanin production, proteolytic activity and elastase activity in PAO-JP2 was investigated simultaneously.
Result:
The andrographolide did not affect the growth of PAO1 in planktonic culture. The production of pyocyanin, proteolytic activity and elastase activity were significanthy suppressed in P. aeruginosa cultures grown in the presence of andrographolide. However, these effects were not observed in PAO-JP2.
Conclusion:
The inhibiting effect of andrographolide on virulence factors production in P. aeruginosa may play a role in its anti-infection activity.
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