title: Experimental infection with Cryptosporidium parvum IIaA21G1R1 subtype in immunosuppressed mice.
abstract: Cryptosporidium parvum subtype IIaA21G1R1 oocysts were used to infect dexamethasone immunosuppressed N: NIH Swiss mice. This is the first Cryptosporidium mouse model in which the relationship between infection and apoptosis has been histologically studied at each portion of the gut in order to observe this dynamic in chronic cryptosporidiosis. Histology showed developmental stages in the duodenum, proximal and distal jejunum, ileum, cecum and colon, with the small intestine remaining infected until day 35 post infection. At proximal jejunum an inverse correlation between infection and apoptosis was observed at days 28 and 35 p.i. Data suggests that jejunum could be an interesting place to carry out further studies on the dynamics of Cryptosporidium infection and apoptosis. Based on these findings, this mouse model was useful to evaluate clinical, parasitological and histological aspects of C. parvum subtype IIaA21G1R1 infection, and it will be an appropriate tool to investigate different aspects of Cryptosporidium infection.
authors: Cátedra de Microbiología y Parasitología, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, 60 y 120, La Plata 1900, Argentina.
authors: Valeria F
authors: VF
authors: Del Coco
authors: María A
authors: MA
authors: Córdoba
authors: Alicia
authors: A
authors: Sidoti
authors: Mónica
authors: M
authors: Santín
authors: Ricardo
authors: R
authors: Drut
authors: Juan A
authors: JA
authors: Basualdo
mesh_terms: D000818:Animals; D003457:Cryptosporidiosis / Q000276:immunology / Q000469:parasitology*; D016785:Cryptosporidium parvum / Q000145:classification*; D003907:Dexamethasone / Q000494:pharmacology; D016867:Immunocompromised Host; D007166:Immunosuppressive Agents / Q000494:pharmacology; D007411:Intestinal Diseases, Parasitic / Q000469:parasitology / Q000473:pathology; D007422:Intestines / Q000469:parasitology / Q000473:pathology; D008297:Male; D051379:Mice; D008815:Mice, Inbred Strains; D013997:Time Factors
chemical_list: D007166:Immunosuppressive Agents; D003907:Dexamethasone