Bacteroides fragilis

Bacteroides fragilis

Bacteroides fragilis (pronunciation: /bækˈtɪəriːoʊdiːz ˈfrædʒɪlɪs/) is a Gram-negative, obligate anaerobic, rod-shaped bacterium species from the Bacteroides genus. It is part of the normal microbiota of the human gastrointestinal tract and can become pathogenic under certain conditions.

Etymology

The name Bacteroides fragilis is derived from the Latin bacterium, meaning "small rod", and fragilis, meaning "fragile". This reflects the bacterium's rod-like shape and its sensitivity to environmental changes.

Characteristics

Bacteroides fragilis is known for its ability to form biofilms, which contribute to its survival in the human gut. It is also capable of antibiotic resistance, making infections difficult to treat.

Pathogenicity

While Bacteroides fragilis is typically a harmless member of the gut microbiota, it can cause infection when it escapes the gastrointestinal tract. This can occur due to surgery, injury, or disease. Infections can lead to abscess formation, bacteremia, and sepsis.

Treatment

Treatment for Bacteroides fragilis infections typically involves antibiotics. However, due to the bacterium's ability to resist certain antibiotics, treatment can be challenging.

Related Terms

• Gram-negative bacteria
• Obligate anaerobe
• Rod-shaped bacteria
• Bacteroides
• Microbiota
• Gastrointestinal tract
• Biofilm
• Antibiotic resistance
• Infection
• Abscess
• Bacteremia
• Sepsis
• Antibiotics

External links

• Medical encyclopedia article on Bacteroides fragilis
• Wikipedia's article - Bacteroides fragilis

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