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Caryocyst‐Like Host Cell Formation by Caryospora duszynskii (Apicomplexa: Eimeriidae) in Human Fetal Lung Cell Cultures 1
Author(s) -
LINDSAY DAVID S.,
SUNDERMANN CHRISTINE A.,
BLAGBURN BYRON L.
Publication year - 1988
Publication title -
the journal of protozoology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.067
H-Index - 77
eISSN - 1550-7408
pISSN - 0022-3921
DOI - 10.1111/j.1550-7408.1988.tb04071.x
Subject(s) - biology , eimeriidae , fetus , parasite hosting , cell , lung , cell culture , microbiology and biotechnology , sexual reproduction , apicomplexa , immunology , genetics , pregnancy , medicine , malaria , plasmodium falciparum , world wide web , computer science
. Sporozoites of the coccidium, Caryospora duszynskii , penetrated human fetal lung cell cultures but did not undergo asexual or sexual multiplication during a 29‐day observation period. Beginning three days postinoculation (PI), infected host cells lost their normal elongated fibroblast‐like shape and became ellipsoidal in appearance and resembled caryocysts. These caryocyst‐like infected cells were observed from 3 through 29 days PI. Sporozoites remained viable throughout the study as evidenced by motility of extracellular sporozoites in infected human fetal lung cell cultures. Results of this in vitro study suggest that some species of Caryospora may form caryocysts in secondary hosts without undergoing asexual or sexual multiplication in these hosts.