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Studying Cryptosporidium Infection in 3D Tissue-derived Human Organoid Culture Systems by Microinjection
Published on: September 14, 2019
Disseminated cryptosporidiosis in Turkey: case report
1Ege University, Medical Faculty, Department of Parasitology, Bornova, Izmir, 35100, Turkey.
Insights
Cryptosporidium infection can cause severe diarrhea in infants, especially those with immune deficiencies like Hyper IgM Type 3. Early diagnosis is crucial for infants with gastrointestinal and respiratory symptoms.
Area of Science:
- Immunology
- Infectious Diseases
- Pediatrics
Background:
- Cryptosporidium is a protozoan parasite causing diarrhea, particularly in immunocompromised individuals.
- CD40 deficiency (Hyper IgM Type 3) is a primary immunodeficiency affecting B-cell function and antibody production.
- Infants with immunodeficiencies are at higher risk for opportunistic infections.
Observation:
- A 12-month-old infant with CD40 deficiency presented with chronic diarrhea, fever, respiratory distress, and failure to thrive.
- Cryptosporidium oocysts were detected in stool samples and transtracheal aspirate during a year-long investigation.
- The patient also suffered from necrotic pneumonia, a severe complication.
Findings:
- The case highlights the opportunistic nature of Cryptosporidium in severely immunocompromised infants.
- Persistent gastrointestinal and respiratory symptoms in immunodeficient infants can be indicative of cryptosporidiosis.
- Kinyoun Acid-fast staining effectively identified Cryptosporidium oocysts in clinical specimens.
Implications:
- Cryptosporidiosis should be considered in the differential diagnosis of infants with combined gastrointestinal and respiratory issues and known or suspected immunodeficiency.
- Early identification and treatment of Cryptosporidium can improve outcomes in vulnerable pediatric populations.
- This case underscores the importance of thorough diagnostic workups for complex infections in primary immunodeficiency disorders.
Abstract:
Cryptosporidium sp is a protozoan that displays an intracellular settlement primarily in the intestinal systems of humans and can result in diarrhoea. Undernourished children and persons with immunosuppression in developing countries are especially vulnerable to infection with this parasite. A 12-month-old female presented at Ege University, Faculty of Medicine, Department of Paediatrics with complaints of fever, diarrhoea, respiratory distress and growth-development retardation was diagnosed with CD40 deficiency (Hyper IgM Type 3). During the one year investigation process of the case with chronic diarrhoea and necrotic pneumonia, Cryptosporidium sp oocysts were found in nine of the 22 faecal examinations and also in transtracheal aspiration liquid examined using the Kinyoun Acid-fast staining method. In conclusion, it is thought that cryptosporidiosis should also be considered in the distinct diagnosis of immunodeficient infants who are presented with respiratory and gastrointestinal system complaints.
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