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Published on: May 13, 2015
Antibacterial action of Myiasis-causing flies
1Department of Pharmacy Practice, College of Pharmacy, University of Minnesota, Minneapolis, MN 55455, USA.
Abstract:
Some species of calliphorid blowflies lay their eggs in wounds; their larvae develop by feeding on the tissue, and the infection is known as myiasis or fly-strike. But wounds, from whatever cause, are frequently contaminated with bacteria - many o f which can spread in the bloodstream causing septicaemia and/or toxaemia. For example, wound contamination with Clostridium welchii - leading to 'gas gangrene' - was a frequent cause of death amongst battlefield casualties. It is from such situations that early observations were made on the beneficial effect of some blowfly larvae in limiting the bacterial infection of wounds. Indeed, some military surgeons would deliberately infest wounds with blowfly maggots in order to prevent bacterial complications. Now, a century or two later, the search for new antibiotics had led researchers back to these early observations, and in this article, Gory Erdmann describes progress in understanding the antibacterial action of blowfly maggots.
Insights
Blowfly maggots can combat bacterial infections in wounds, a practice observed historically. Modern research is exploring the antibacterial properties of these larvae to develop new treatments.
Area of Science:
- Medical Entomology
- Bacteriology
- Pharmacology
Background:
- Myiasis, or fly-strike, occurs when blowfly larvae infest wounds, feeding on tissue.
- Bacterial contamination of wounds can lead to severe systemic infections like septicaemia, toxaemia, and gas gangrene.
- Historical surgical practices involved using blowfly maggots to prevent bacterial complications in wounds.
Purpose of the Study:
- To investigate the antibacterial action of blowfly maggots.
- To re-examine historical observations of maggots' beneficial effects on wound infections.
- To identify potential new antibiotic sources from natural agents.
Main Methods:
- Review of historical surgical records and observations.
- Analysis of scientific literature on blowfly larvae and their secretions.
- Research into the mechanisms of antibacterial activity in maggots.
Main Results:
- Blowfly larvae possess inherent antibacterial properties that limit bacterial growth in wounds.
- Specific compounds or substances produced by the maggots are responsible for the observed antimicrobial effects.
- Early surgical interventions using maggots demonstrated efficacy in reducing bacterial load.
Conclusions:
- Blowfly maggots exhibit significant antibacterial activity, offering a natural source for novel antimicrobial agents.
- Further research into maggot secretions could lead to the development of new antibiotics to combat resistant bacterial infections.
- Historical therapeutic uses of maggots provide a foundation for modern scientific investigation into their medicinal potential.
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