The tegument of Dicrocoelium dendriticum was studied by scanning and transmission electron microscopy. It consists of an anucleate surface syncytium and a deeper nucleated zone. The syncytial layer covers the entire surface of the fluke. It is connected to the nucleated zone through thin cytoplasmic strands. The syncytium is bounded by an apical plasma membrane which is highly folded. This layer mainly contains abundant mitochondria of varying size and shape, and two types of granules, dumbbell shaped and spherical. Although the apical surface shows active exocytosis, no evidence for endocytosis is observed. This is the first study from the State of Kuwait showing the presence of this liver fluke in sheep imported from other countries.
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Exp Parasitol
April 2013
Departamento de Sanidad Animal, Consejo Superior de Investigaciones Científicas (CSIC), Instituto de Ganadería de Montaña CSIC-ULE, 24346 Grulleros, LEÓN, Spain.
Dicrocoeliosis, caused by Dicrocoelium dendriticum, is an important hepatic parasitosis in ruminants, whose immunological diagnosis and control remain unsatisfactory. There are very few studies on the antigens of this trematode and molecular knowledge about it is practically nil. Therefore the aim of this study was to identify the major antigenic proteins in the tegument (TG) and excretory-secretory (ES) antigenic extracts of D.
View Article and Find Full Text PDFJ Egypt Soc Parasitol
April 2003
Department of Science, College of Basic Education, Public Authority for Applied Education and Training, Adaliya, Kuwait.
Parasitol Res
June 1988
Department of Zoology, University of Alcala de Henares, Madrid, Spain.
Scanning electron microscopy (SEM) has been used to study the tegument and related structures of adult Dicrocoelium dendriticum. Its body shape, suckers, common genital pore, Laurer's canal pore, excretory pore, and cirrus are described as seen under SEM. The tegument is devoid of spines and presents an interlacing, ridged network which covers the entire body.
View Article and Find Full Text PDFThe fine structure of the tegument of three trematode species, Schistosoma mansoni, Dicrocoelium dendriticum, and Fasciola hepatica, was studied by means of light scanning (SEM) and transmission electron microscopy (TEM) after in vitro exposure to 0, 1, 10, and 100 micrograms/ml of the anthelmintic praziquantel for 5, 15, 30, and 60 min. In S. mansoni and D.
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