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Histochemistry and histoenzymology of the hydatid cyst (Echinococcus granulosus Batsch, 1786)

I. The germinal membrane

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Summary

Healthy germinal membranes of hydatid cysts from lungs of human and bovine sources were dissected and isolated for histochemical and histoenzymatic research. These techniques were performed in frozen sections and pieces of the whole membrane.

Enzymatic research showed that the germinal membrane presents highly differentiated metabolic areas. These areas were topographically related with the origin and insertion of brood capsules, having differentiated structures for metabolic interchange with scolices. Taking our data into account it may be suggested that this functional differentiation could be transitory and variable for all the membrane surface.

The accumulation of lipids and enzymes such as simple esterase, lipase, β-HDH, α-GDH and NADPH-reductase in those areas, suggests that lipids are not a simple excretory product. This distribution probably implies that lipid metabolism or its resultant products are important in development and growth of scolices. In that sense other authors' findings and hypothesis about the possible existence of an endocrine system of the parasite, are considered.

This idea being demonstra tedin further researches, the lipid metabolic pathways shall bring a good pharmacological approach to the interference with parasite development.

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Authors and Affiliations

  1. Facultad de Medicina, Hospital de Clínicas, Montevideo

    Jorge Vercelli-Retta, Nelson J. Reissenweber, Winston Lozano & Ana M. Siri

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  1. Jorge Vercelli-Retta
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  2. Nelson J. Reissenweber
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  3. Winston Lozano
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  4. Ana M. Siri
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Vercelli-Retta, J., Reissenweber, N.J., Lozano, W. et al. Histochemistry and histoenzymology of the hydatid cyst (Echinococcus granulosus Batsch, 1786). Z. F. Parasitenkunde 48, 15–23 (1975). https://doi.org/10.1007/BF00389825

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  • DOI: https://doi.org/10.1007/BF00389825

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