Diagnosis of Enterocytozoon bieneusi by PCR in stool samples eluted from filter paper disks

Area of Science:

• Microbiology
• Parasitology
• Molecular Diagnostics

Background:

• Enterocytozoon bieneusi is a significant cause of opportunistic infections, particularly in immunocompromised individuals.
• Accurate and accessible diagnostic methods are crucial for managing Enterocytozoon bieneusi infections.

Purpose of the Study:

• To develop and validate a Polymerase Chain Reaction (PCR)-based assay for detecting Enterocytozoon bieneusi in human fecal samples.
• To evaluate the efficacy of different sample preservation methods for DNA extraction and subsequent PCR analysis.

Main Methods:

• DNA was extracted from fecal samples collected on filter paper disks.
• Four different preserving solutions were evaluated for their suitability in sample preservation.
• Infected specimens were identified using electrophoresis of amplified DNA (amplicons) from both concentrated formalin-fixed and unconcentrated fresh fecal samples.

Main Results:

• The developed PCR assay successfully detected Enterocytozoon bieneusi DNA.
• Filter paper disks proved effective for sample collection and mailing.
• The methodology demonstrated reliability for diagnosing Enterocytozoon bieneusi infections.

Conclusions:

• The described PCR-based methodology is effective for the collection, mailing, and diagnosis of Enterocytozoon bieneusi.
• This approach offers a practical solution for diagnosing Enterocytozoon bieneusi, especially in resource-limited settings.