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Cytotoxin and enterotoxin production by Clostridium difficile.
Microbiologica
|October 1, 1984
Summary
Clostridium difficile toxin production was studied in 30 strains. All strains from patients with pseudomembranous colitis and antibiotic-associated diarrhea produced cytotoxin, but only 70% produced enterotoxin.
Area of Science:
- Microbiology
- Gastroenterology
- Toxicology
Background:
- Clostridium difficile is a significant cause of intestinal disorders.
- Toxin production by Clostridium difficile strains varies and influences disease severity.
Purpose of the Study:
- To investigate the toxin production profiles of Clostridium difficile isolates from various patient groups and asymptomatic carriers.
- To correlate toxin production with specific intestinal conditions.
Main Methods:
- Isolation and culture of 30 Clostridium difficile strains from fecal samples.
- Detection of cytotoxin (toxin B) using tissue culture assay.
- Detection of enterotoxin (toxin A) using the ileal loop test.
Main Results:
- All Clostridium difficile isolates from patients with pseudomembranous colitis (PMC) and antibiotic-associated diarrhea (AAC) produced cytotoxin.
- Enterotoxin (toxin A) was detected in approximately 70% of strains isolated from patients with PMC and AAC.
- Toxin production varied among isolates from asymptomatic carriers.
Conclusions:
- Cytotoxin (toxin B) production is a common characteristic of Clostridium difficile strains causing PMC and AAC.
- Enterotoxin (toxin A) is not universally produced by pathogenic Clostridium difficile strains.
- Further research is needed to understand the role of toxin variability in disease pathogenesis.