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Trypanosoma cruzi: Ultrastructural, cytochemical and freeze-fracture studies of protein uptake

de Souza, Wanderley ; de Carvalho, Técia Ulisses ; Benchimol, Marlene ; Chiari, Egler

Experimental parasitology, 1978-06, Vol.45 (1), p.101-115 [Periódico revisado por pares]

United States: Elsevier Inc

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Título:
Trypanosoma cruzi: Ultrastructural, cytochemical and freeze-fracture studies of protein uptake
Autor: de Souza, Wanderley ; de Carvalho, Técia Ulisses ; Benchimol, Marlene ; Chiari, Egler
Assuntos: Animals ; Carbohydrates - analysis ; Cell membrane ; Cell Membrane - analysis ; Cell Membrane - ultrastructure ; Cytostome ; Epimastigote ; Freeze Fracturing ; Freeze-fracture ; Horseradish Peroxidase - metabolism ; Organoids - metabolism ; parasitic ; Pinocytosis ; Proteins - metabolism ; Protozoa ; Trypanosoma cruzi ; Trypanosoma cruzi - metabolism ; Trypanosoma cruzi - ultrastructure ; Trypomastigote
É parte de: Experimental parasitology, 1978-06, Vol.45 (1), p.101-115
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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Descrição: Epimastigotes and trypomastigotes of Trypanosoma cruzi, obtained from liquid cultures, have vesicles and multivesicular structures in their cytoplasm. Horseradish peroxidase (HRP) was used as a tracer to study the uptake of protein by these two forms. In epimastogotes HRP is ingested by a process of pinocytosis which occurs through the cytostome. Trypomastigotes do not have a cytostome, and pinocytosis occurs through the flagellar pocket region. The pinocytotic vesicles can fuse with each other to form large multivesicular structures that are more abundant in epimastigotes than in trypomastigotes. The cell membrane as well as the membranes of the pinocytotic vesicles and the large multivesicular structure have carbohydrates, as detected by the periodic acid-thiosemicarbazide-silver proteinate technique. Intramembranous particles were observed by using the freeze-fracture technique. The cell membrane has many particles, whereas the membranes of the vesicles and multivesicular structure have few or no particles.
Editor: United States: Elsevier Inc
Idioma: Inglês

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Trypanosoma cruzi: Ultrastructural, cytochemical and freeze-fracture studies of protein uptake

de Souza, Wanderley ; de Carvalho, Técia Ulisses ; Benchimol, Marlene ; Chiari, Egler

United States: Elsevier Inc

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