Comparative ultrastructural observations of the Egyptian schistosomes: Schistosoma mansoni and Schistosoma haematobium

Reda, E.S.; El-Shabasy, E.A.; Said, A.E.; Saleh, M.A.

Journal of Parasitic Diseases Official Organ of the Indian Society for Parasitology 43(1): 120-133

2019


ISSN/ISBN: 0971-7196
PMID: 30956455
DOI: 10.1007/s12639-018-1067-y
Accession: 066665352

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Abstract
An ultrastructural topography has been made to the tegumental architectures of two Egyptian schistosomes namely S. mansoni and S. haematobium hosted in a model animal namely Cricentus auratus. The distribution of sensory papillae on the oral sucker were arranged in one circle around the rim in addition to some papillae in upper part of inner zone in male, female S. mansoni and in male S. haematobium. The differences in the types of papillae, their distribution and shape of ridges on various parts of the body surface which are quite specific for each species was studied. Also, the ventral tegument of female's displays larger and more numerous sensory papillae. Both ciliated and non-ciliated papillae were observed in this work which makes a link with another species of schistosome S. japonicum. Another characteristic feature in this study is unique of male of S. haematobium, the extensive formation of ridges and transformation to microvilli in the posterior region in males. These finding may provoke further study of schistosomes hosted in animal model for more detailed investigation at the molecular level.