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M9650452.TXT
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1996-03-09
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Document 0452
DOCN M9650452
TI Complete development of Cryptosporidium parvum in bovine fallopian tube
epithelial cells.
DT 9605
AU Yang S; Healey MC; Du C; Zhang J; Department of Animal, Dairy and
Veterinary Sciences, Utah State; University, Logan 84322-5600, USA.
SO Infect Immun. 1996 Jan;64(1):349-54. Unique Identifier : AIDSLINE
MED/96110955
AB Cryptosporidium parvum is a coccidian parasite responsible for causing
protracted and life-threatening diarrheal illness in immunocompromised
humans, especially patients with AIDS. The lack of medications effective
in treating people suffering from cryptosporidiosis has prompted the
development of in vivo and in vitro models for this disease. This study
is the first to demonstrate that C. parvum can complete its entire life
cycle (from sporozoite to infective oocyst) in a primary culture of
bovine fallopian tube epithelial (BFTE) cells. Scanning and transmission
electron photomicrographs were used to detail the ultrastructure of
individual parasitic stages. Successful infections were produced by
inoculating cell cultures with either oocysts or purified sporozoites.
Infection of BFTE cells with C. parvum close paralleled in vivo
infections with regard to host cell location and chronology of parasite
development. Infecting BFTE cells with sporulated oocysts provided a
reproducible and quantitative cultivation system with significantly (P <
or = 0.001) higher infection rates than in Madin-Darby canine kidney
cells. Oocysts produced in BFTE cells were infective for
immunosuppressed adult C57BL/6N mice. Cultivation of C. parvum in BFTE
cells will facilitate the study of interactions between parasites and
host cells as well as provide a reliable system for evaluating
anticryptosporidial compound efficacy.
DE Animal Cattle Cells, Cultured Child, Preschool Comparative Study
Cryptosporidium parvum/*GROWTH & DEVELOPMENT/ULTRASTRUCTURE
Epithelium/PARASITOLOGY Fallopian Tubes/CYTOLOGY/*PARASITOLOGY Female
Human Kidney/CYTOLOGY/PARASITOLOGY Support, Non-U.S. Gov't JOURNAL
ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).