Related Experiment Video
Updated: Aug 11, 2026

Antibiotic Efficacy Testing in an Ex vivo Model of Pseudomonas aeruginosa and Staphylococcus aureus Biofilms in the Cystic Fibrosis Lung
Published on: January 22, 2021
Linezolid in the treatment of brain abscess due to Peptostreptococcus
Federica Salin1, Fabrizio Vianello, Renzo Manara
1Department of Infectious and Tropical Diseases, University Hospital, Padova, Italy.
Abstract:
Brain abscesses can be caused by bacteria, fungi, and parasites. Among bacteria, anaerobic organisms include the Bacteroides species group, Fusobacterium, Peptostreptococcus, and Propionibacterium. In these cases, a 4-week course of parenteral penicillin/cefalosporin and metronidazole is the standard of treatment. We describe a case of brain abscess secondary to anaerobic infection with Peptostreptococcus, which was successfully treated with parenteral and oral linezolid after failure of standard therapy.
Insights
Brain abscesses from anaerobic bacteria like Peptostreptococcus can resist standard antibiotics. This case highlights linezolid as a successful alternative treatment when conventional therapies fail, offering new hope for difficult infections.
Area of Science:
- Neurology
- Infectious Diseases
- Microbiology
Background:
- Brain abscesses are serious infections often caused by anaerobic bacteria.
- Standard treatment involves a 4-week course of parenteral penicillin/cefalosporin and metronidazole.
Observation:
- A patient presented with a brain abscess caused by anaerobic Peptostreptococcus infection.
- Initial treatment with standard antibiotic therapy proved unsuccessful.
Findings:
- The brain abscess was successfully treated with a course of parenteral and oral linezolid.
- Linezolid demonstrated efficacy in a case resistant to standard antibiotic regimens.
Implications:
- This case suggests linezolid as a viable therapeutic option for anaerobic brain abscesses refractory to standard treatment.
- Further research into linezolid's role in treating resistant brain abscesses is warranted.
Related Concept Videos
Brain Abscess l: Introduction
Acute Pyelonephritis II: Diagnostic Studies and Management
Clinical Significance of Antibiotic Resistance
Bacterial Meningitis II: Pathophysiology
Bacterial Meningitis I: Introduction
Cryptococcal Meningitis