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Updated: Jul 14, 2026
Studying Cryptosporidium Infection in 3D Tissue-derived Human Organoid Culture Systems by Microinjection
Published on: September 14, 2019
In vivo culture of Cryptosporidium oocysts for laboratory use
Charoonluk Sangloung1, Ruangrat Buddhirongawatr, Nitipan Tantawiwattananon
1Department of Protozoology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.
Abstract:
In the present study, we describe in vivo cultivation to produce oocysts. Seven-day-old mice were orally infected with 100,000-120,000 Cryptosporidium oocysts. On day 8 post-infection, the mice were killed by ether, and the small and large intestines collected. A simple extraction procedure was used and purified using Ficoll gradient centrifugation. After purification, the oocysts were preserved in phosphate buffered saline with antibiotic at 4 degrees C before use.
Insights
This study details a method for producing Cryptosporidium oocysts in mice. The in vivo cultivation technique allows for efficient oocyst generation for research purposes.
Area of Science:
- Parasitology
- Infectious Diseases
- Animal Models
Background:
- Cryptosporidium is a significant cause of diarrheal disease.
- Reliable sources of infectious Cryptosporidium oocysts are crucial for research.
Purpose of the Study:
- To establish an in vivo cultivation method for producing Cryptosporidium oocysts.
- To optimize oocyst yield and purity for experimental use.
Main Methods:
- Oral infection of 7-day-old mice with 100,000-120,000 Cryptosporidium oocysts.
- Intestinal tissue collection on day 8 post-infection.
- Oocyst extraction and purification via Ficoll gradient centrifugation.
Main Results:
- Successful in vivo cultivation of Cryptosporidium oocysts in mice.
- Purified oocysts obtained using a simple extraction and Ficoll gradient method.
- Preservation of oocysts in phosphate-buffered saline with antibiotic at 4°C.
Conclusions:
- The described in vivo cultivation method provides a reliable source of Cryptosporidium oocysts.
- This technique facilitates further research into Cryptosporidium biology and control strategies.
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