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The mycoplasmacidal effect of herbicolin A
The Journal of Antimicrobial Chemotherapy
|October 1, 1985
Summary
Herbicolin A exhibits a mycoplasmacidal effect, meaning it kills sterol-requiring Mollicutes like Mycoplasma capricolum and Ureaplasma urealyticum, rather than just inhibiting their growth.
Area of Science:
- Microbiology
- Antimicrobial Agents
- Mollicutes
Background:
- Mollicutes, including Mycoplasma and Ureaplasma, are sterol-requiring bacteria.
- Herbicolin A is an antibiotic with known inhibitory effects on certain microorganisms.
Purpose of the Study:
- To determine if Herbicolin A's inhibitory effect on sterol-requiring Mollicutes is mycoplasmastatic (inhibits growth) or mycoplasmacidal (kills cells).
Main Methods:
- Tested Herbicolin A's effect on Mycoplasma capricolum and Ureaplasma urealyticum.
- Exposed mycoplasmas to various concentrations of Herbicolin A for different durations.
- Removed Herbicolin A using serial dilution, membrane filtration, or centrifugation before assessing survival.
Main Results:
- Herbicolin A demonstrated a mycoplasmacidal effect on the tested Mollicutes strains.
- The antibiotic actively killed Mycoplasma capricolum and Ureaplasma urealyticum.
Conclusions:
- Herbicolin A possesses a direct killing action against sterol-requiring Mollicutes.
- This finding clarifies the mechanism of action for Herbicolin A in this bacterial class.