The present study was undertaken to determine the viability and infectivity of oocysts of Cryptosporidium baileyi that had been stored from 1 to 40 months at 4℃ preserved in 2.5% potassium dichromate solution. Oocysts of C. baileyi were purified from the feces of experimentally infected chickens using discontinuous sucrose gradients. Subsequently, the purified oocysts were suspended in 2.5% potassium dichromate solution at a concentration of 1 × 107 organism/ml, and their viabilities were assessed by nucleic acid staining, histologic examination, and infectivity to 2-day-old chickens. All chickens inoculated with oocysts that had been stored for 1-18 months developed patent infections, while chickens infected with older oocysts remained uninfected. Between 5.8% and 82.2% of the oocysts, stored at 4℃ in 2.5% potassium dichromate solution, were found to be viable, as determined by nucleic acid staining. Parasite colonization in the bursa of Fabricius was detected in the microvillus border of bursal epithelium. The finding that C. baileyi oocysts remain infective to chickens for at least 18 months offers important time-saving advantages to investigators who frequently require large numbers of oocysts.
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Multicenter Comparative Study of Six Cryptosporidium parvum DNA Extraction Protocols Including Mechanical Pretreatment from Stool Samples Nicolas Valeix, Damien Costa, Louise Basmaciyan, Stéphane Valot, Anne Vincent, Romy Razakandrainibe, Florence Robert-Gangneux, Céline Nourrisson, Bruno Pereira, Emilie Fréalle, Philippe Poirier, Loic Favennec, Frederic Dalle Microorganisms.2020; 8(9): 1450. CrossRef
A chicken embryo model for the maintenance and amplification of Cryptosporidium parvum and Cryptosporidium baileyi oocysts Nikola Holubová, Bohumil Sak, Tereza Schulzová, Roman Konečný, Michael Rost, Lenka Tůmová, John McEvoy, Martin Kváč European Journal of Protistology.2020; 75: 125718. CrossRef
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