Dientamoeba fragilis. An intestinal pathogen in children?

Area of Science:

• Pediatric Gastroenterology
• Infectious Diseases
• Parasitology

Background:

• Dientamoeba fragilis is a protozoan parasite that infects the human gastrointestinal tract.
• Its role in causing symptoms in children has been debated.
• This study investigates the pathogenicity of D. fragilis in pediatric patients.

Purpose of the Study:

• To determine if Dientamoeba fragilis is a significant cause of gastrointestinal symptoms in children.
• To evaluate the association between D. fragilis infection and symptoms like diarrhea and abdominal pain.
• To assess the efficacy of common treatments for D. fragilis infections.

Main Methods:

• A retrospective study of 35 children with Dientamoeba fragilis as the sole identified gastrointestinal parasite.
• Analysis of presenting gastrointestinal symptoms (diarrhea, abdominal pain).
• Evaluation of peripheral eosinophilia and treatment outcomes with diiodohydroxyquin or metronidazole.

Main Results:

• Gastrointestinal symptoms were present in 91% of the children studied.
• Diarrhea was common in acute cases; abdominal pain was more frequent in chronic cases.
• Peripheral eosinophilia was observed in 50% of infected children, significantly more than in controls.
• Treatment with diiodohydroxyquin or metronidazole led to symptom resolution or improvement.

Conclusions:

• Dientamoeba fragilis should be considered a pathogenic organism in children presenting with gastrointestinal symptoms.
• The parasite is associated with symptoms such as diarrhea and abdominal pain.
• Antiparasitic therapy is effective in managing D. fragilis infections in pediatric patients.