Echinococcus granulosus protoscolex formation in natural infections

Echinococcus granulosus is a parasitic platyhelminth that is responsible for cystic hydatid disease. From the inner, germinal layer of hydatid cysts protoscoleces are generated, which are are the infective forms to the dog. Systematic studies on the cell biology of E. granulosus protoscolex formatio...

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Autores principales:	GALINDO,MARIO, GONZALEZ,M JULIETA, GALANTI,NORBEL
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2002
Materias:	protoscolex formation hydatid cyst
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602002000300011
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spelling	oai:scielo:S0716-976020020003000112003-11-26Echinococcus granulosus protoscolex formation in natural infectionsGALINDO,MARIOGONZALEZ,M JULIETAGALANTI,NORBEL protoscolex formation hydatid cyst Echinococcus granulosus is a parasitic platyhelminth that is responsible for cystic hydatid disease. From the inner, germinal layer of hydatid cysts protoscoleces are generated, which are are the infective forms to the dog. Systematic studies on the cell biology of E. granulosus protoscolex formation in natural infections are scarce and incomplete. In the present report we describe seven steps in the development of protoscoleces. Cellular buds formed by a clustering of cells emerge from the germinal layer of hydatid cysts. The buds elongate and the cells at their bases seem to diminish in number. Very early on a furrow appears in the elongated buds, delimiting anterior (scolex) and caudal (body) regions. Hooks are the first fully-differentiated structures formed at the apical region of the nascent scolex. In a more advanced stage, the scolex shows circular projections and depressions that develop into suckers. A cone can later be seen at the center of the hooks, the body is expanded and a structured neck is evident between the scolex and the body. During protoscolex development this parasitic form remains attached to the germinative layer through a stalk. When fully differentiated, the stalk is cut off and the infective protoscolex is now free in the hydatid fluidinfo:eu-repo/semantics/openAccessSociedad de Biología de ChileBiological Research v.35 n.3-4 20022002-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602002000300011en10.4067/S0716-97602002000300011
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	protoscolex formation hydatid cyst
spellingShingle	protoscolex formation hydatid cyst GALINDO,MARIO GONZALEZ,M JULIETA GALANTI,NORBEL Echinococcus granulosus protoscolex formation in natural infections
description	Echinococcus granulosus is a parasitic platyhelminth that is responsible for cystic hydatid disease. From the inner, germinal layer of hydatid cysts protoscoleces are generated, which are are the infective forms to the dog. Systematic studies on the cell biology of E. granulosus protoscolex formation in natural infections are scarce and incomplete. In the present report we describe seven steps in the development of protoscoleces. Cellular buds formed by a clustering of cells emerge from the germinal layer of hydatid cysts. The buds elongate and the cells at their bases seem to diminish in number. Very early on a furrow appears in the elongated buds, delimiting anterior (scolex) and caudal (body) regions. Hooks are the first fully-differentiated structures formed at the apical region of the nascent scolex. In a more advanced stage, the scolex shows circular projections and depressions that develop into suckers. A cone can later be seen at the center of the hooks, the body is expanded and a structured neck is evident between the scolex and the body. During protoscolex development this parasitic form remains attached to the germinative layer through a stalk. When fully differentiated, the stalk is cut off and the infective protoscolex is now free in the hydatid fluid
author	GALINDO,MARIO GONZALEZ,M JULIETA GALANTI,NORBEL
author_facet	GALINDO,MARIO GONZALEZ,M JULIETA GALANTI,NORBEL
author_sort	GALINDO,MARIO
title	Echinococcus granulosus protoscolex formation in natural infections
title_short	Echinococcus granulosus protoscolex formation in natural infections
title_full	Echinococcus granulosus protoscolex formation in natural infections
title_fullStr	Echinococcus granulosus protoscolex formation in natural infections
title_full_unstemmed	Echinococcus granulosus protoscolex formation in natural infections
title_sort	echinococcus granulosus protoscolex formation in natural infections
publisher	Sociedad de Biología de Chile
publishDate	2002
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602002000300011
work_keys_str_mv	AT galindomario echinococcusgranulosusprotoscolexformationinnaturalinfections AT gonzalezmjulieta echinococcusgranulosusprotoscolexformationinnaturalinfections AT galantinorbel echinococcusgranulosusprotoscolexformationinnaturalinfections
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Echinococcus granulosus protoscolex formation in natural infections

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