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Scanning electron microscopy of the human low-density lipoprotein interaction with the tegument of Schistosoma mansoni

Pereira, Adriana S. A. ; Padilha, Rafael José R. ; Lima-Filho, José L. ; Chaves, Maria E. C.

Parasitology research (1987), 2011-11, Vol.109 (5), p.1395-1402 [Periódico revisado por pares]

Berlin/Heidelberg: Springer-Verlag

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Título:
Scanning electron microscopy of the human low-density lipoprotein interaction with the tegument of Schistosoma mansoni
Autor: Pereira, Adriana S. A. ; Padilha, Rafael José R. ; Lima-Filho, José L. ; Chaves, Maria E. C.
Assuntos: Analysis ; Animal Structures - physiology ; Animal Structures - ultrastructure ; Animals ; Biological and medical sciences ; Biomedical and Life Sciences ; Biomedicine ; Canals ; Electron microscopy ; Endocytosis ; Female ; Females ; Fundamental and applied biological sciences. Psychology ; General aspects ; General aspects and techniques. Study of several systematic groups. Models ; Host-Parasite Interactions ; Humans ; Immunology ; Internalization ; Invertebrates ; Lipids ; Lipoproteins, LDL - metabolism ; Low density lipoprotein ; Low density lipoproteins ; Male ; Medical Microbiology ; Microbiology ; Microscopy, Electron, Scanning ; Original Paper ; Scanning electron microscopy ; Schistosoma mansoni ; Schistosoma mansoni - physiology ; Schistosoma mansoni - ultrastructure ; Tegument ; Worms
É parte de: Parasitology research (1987), 2011-11, Vol.109 (5), p.1395-1402
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
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Descrição: The interaction between host molecules and Schistosoma mansoni has been regarded as a key feature for parasite survival. In this work, scanning electron microscopy was used to study the interaction of human low-density lipoprotein (LDL) with the tegument of the adult worm of S. mansoni . Worms were incubated in RPMI 1640 containing 10% of LPDS and 40 μg LDL/mL during 30, 60, and 120 min. Control worms were processed in the same way, without LDL. After the incubations, the samples were fixed and processed to scanning electron microscopy. The results demonstrated interaction of the LDL particles with the male parasite tegument. Male and female worms incubated without LDL from 0 (control) to 120 min did not show alterations in the tegument. It was observed a larger number of LDL particles on the dorsal region of male adult worm than others regions (anterior, posterior and gynecophoral canal). The female tegument did not show adherence of LDL. Aggregates on the tegument of the male worm were in greater number and size in the incubation times of 30 and 60 min than 120 min. The comparison between 30 and 120 min of incubation showed that the particles’ size diminished from 2,650–860 nm to 634–363 nm, respectively. Such reduction can be due to the capture and the use of the lipids by the worm. Therefore, the internalization of lipids from LDL by the male worms seems to be a mechanism independent of endocytosis. Differences between males and females suggest lipid transference from male to female through gynecophoral canal.
Editor: Berlin/Heidelberg: Springer-Verlag
Idioma: Inglês

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Scanning electron microscopy of the human low-density lipoprotein interaction with the tegument of Schistosoma mansoni

Pereira, Adriana S. A. ; Padilha, Rafael José R. ; Lima-Filho, José L. ; Chaves, Maria E. C.

Berlin/Heidelberg: Springer-Verlag

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