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Published on: October 31, 2019
Antimicrobial activity of a multispecies probiotic (Ecologic 641) against pathogens isolated from infected pancreatic
B U Ridwan1, C J M Koning, M G H Besselink
1Department of Medical Microbiology, University Medical Center Utrecht, Utrecht, The Netherlands. b.ridwan@westfriesgasthuis.nl
Aims:
Although probiotic prophylaxis has been suggested to prevent small bowel bacterial overgrowth, bacterial translocation and infection of pancreatic necrosis in severe acute pancreatitis, limited data are available on their antimicrobial activity.
Methods And Results:
Using the well-diffusion method, we studied the antimicrobial properties of a multispecies probiotic product (Ecologic 641) against a collection of pathogens cultured from infected pancreatic necrosis. All individual probiotic strains included in the multispecies preparation were able to inhibit the growth of the pathogens to some extent. However, the combination of the individual strains (i.e. the multispecies preparation) was able to inhibit all pathogenic isolates. Probiotic-free supernatants adjusted to pH 7 were not able to inhibit pathogen growth.
Conclusion:
Ecologic 641 is capable of inhibiting growth of a wide variety of pathogens isolated from infected pancreatic necrosis. The antimicrobial properties are to a large extent explained by the production of organic acids.
Significance And Impact Of The Study:
Ecologic 641 is currently being used in a Dutch nationwide double-blind, placebo-controlled, randomized multicentre trial in patients with predicted severe acute pancreatitis.
Insights
A multispecies probiotic, Ecologic 641, effectively inhibits pathogens causing pancreatic necrosis. Its antimicrobial properties, mainly from organic acids, are crucial for treating severe acute pancreatitis.
Area of Science:
- Microbiology
- Gastroenterology
- Probiotic Research
Background:
- Severe acute pancreatitis (SAP) can lead to complications like bacterial overgrowth and infected pancreatic necrosis.
- Probiotic prophylaxis is explored for preventing these SAP complications, but their antimicrobial activity requires further investigation.
Purpose of the Study:
- To evaluate the antimicrobial properties of a specific multispecies probiotic product (Ecologic 641).
- To determine the efficacy of Ecologic 641 against pathogens commonly found in infected pancreatic necrosis.
Main Methods:
- The well-diffusion method was employed to assess antimicrobial activity.
- Ecologic 641 and its individual strains were tested against pathogenic bacteria isolated from infected pancreatic necrosis.
- Probiotic-free supernatants were used as controls.
Main Results:
- Individual probiotic strains showed partial inhibition of pathogen growth.
- The multispecies preparation, Ecologic 641, demonstrated inhibition against all tested pathogenic isolates.
- Probiotic-free supernatants did not inhibit pathogen growth, indicating the probiotic's direct effect.
Conclusions:
- Ecologic 641 exhibits broad-spectrum antimicrobial activity against diverse pathogens implicated in infected pancreatic necrosis.
- The production of organic acids is a key mechanism behind Ecologic 641's antimicrobial effects.
- Ecologic 641 is under investigation in a large-scale clinical trial for patients with predicted severe acute pancreatitis.
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