Document Detail

Freeze-fracture study of the site of attachment of Cryptosporidium muris in gastric glands.
MedLine Citation:
PMID:  1387896     Owner:  NLM     Status:  MEDLINE    
The mode and organization of the attachment site of Cryptosporidium muris to gastric glands of stomach were investigated by the freeze-fracture method. Cryptosporidium muris was enveloped by a double membrane, of host plasma membrane origin, which formed the parasitophorous vacuole. The outer membrane of the double membrane was continuous with host plasma membrane, while the inner membrane was connected with the anterior part of the parasite plasma membrane at the annular ring. The density of intramembranous particles (IMP) was severely altered at the above two junctures. The parasitophorous outer membrane showed low IMP-density when compared to the host plasma membrane, although both membranes were continuous at the dense band. The inner membrane had few IMP, whereas the parasite plasma membrane showed numerous IMP, although both membranes were continuous at the annular ring. The size of dense band and annular ring was similar in diameter. The feeder organelle was clearly visible as membrane folds in freeze-fracture and some of them were connected with small vesicles of cytoplasm, indicating that the feeder organelle may play an important role for incorporation of nutrients from the host cell.
H Yoshikawa; M Iseki
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of protozoology     Volume:  39     ISSN:  0022-3921     ISO Abbreviation:  J. Protozool.     Publication Date:    1992 Sep-Oct
Date Detail:
Created Date:  1992-10-15     Completed Date:  1992-10-15     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  2985197R     Medline TA:  J Protozool     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  539-44     Citation Subset:  IM    
Department of Biology, Faculty of Science, Nara Women's University, Japan.
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MeSH Terms
Cell Adhesion
Cell Membrane / ultrastructure
Cryptosporidium / physiology,  ultrastructure*
Freeze Fracturing
Gastric Mucosa / parasitology*
Mice, Inbred ICR
Specific Pathogen-Free Organisms

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