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Characterization of Peptostreptococcus species in skin infections
S Higaki1, T Kitagawa, M Kagoura
1Department of Dermatology, Faculty of Medicine, Toyama Medical and Pharmaceutical University, Japan.
Abstract:
We examined the characteristics of Peptostreptococcus species in infectious skin diseases. P. magnus was the species identified most frequently, followed by P. asaccharolyticus. Peptostreptococcus species were mainly isolated from infected atheroma and secondary infections due to ulcers; their resistance to five antimicrobial agents was generally low. The resistance of the three predominant Peptostreptococcus species to the antimicrobials was similar to that of all of the Peptostreptococcus species. The predominant Peptostreptococcus species isolated from infected atheroma might be pathogenic. It was considered that the presence of anaerobes as well as aerobes was important to induce the infectious condition.
Insights
Peptostreptococcus species, particularly P. magnus, are common in skin infections like atheroma and ulcers. These bacteria show low resistance to common antimicrobials, suggesting potential pathogenicity in skin disease.
Area of Science:
- Microbiology
- Dermatology
- Infectious Diseases
Background:
- Peptostreptococcus species are anaerobic bacteria that can be part of the normal human flora.
- These bacteria have been implicated in various infections, including skin and soft tissue infections.
- Understanding their role in specific dermatological conditions is crucial for effective treatment.
Purpose of the Study:
- To characterize the prevalence and antimicrobial resistance patterns of Peptostreptococcus species in infectious skin diseases.
- To identify the predominant Peptostreptococcus species involved in conditions such as infected atheroma and ulcers.
- To assess the potential pathogenicity of these anaerobic bacteria in skin infections.
Main Methods:
- Bacterial isolates from infectious skin lesions were identified using standard microbiological techniques.
- Antimicrobial susceptibility testing was performed on isolated Peptostreptococcus species against five key antimicrobial agents.
- Statistical analysis was used to determine the frequency of different species and their resistance profiles.
Main Results:
- Peptostreptococcus magnus was the most frequently identified species, followed by P. asaccharolyticus.
- These bacteria were predominantly isolated from infected atheroma and secondary ulcer infections.
- Overall, Peptostreptococcus species exhibited low resistance to the tested antimicrobial agents.
Conclusions:
- Predominant Peptostreptococcus species, especially those from infected atheroma, may possess pathogenic potential in skin infections.
- The presence of both anaerobic (Peptostreptococcus) and aerobic bacteria is likely important for inducing infectious conditions.
- Low antimicrobial resistance suggests that standard treatments may be effective, but further investigation is warranted.