Linked Life Data

16860560

Source:http://linkedlifedata.com/resource/pubmed/id/16860560

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2007-1-8
pubmed:abstractText
Lysosomes of trypanosomatid protozoa are poorly known. In this work we have cytochemically detected the lysosomal enzyme aryl sulphatase in the trypanosomatids Trypanosoma cruzi and Crithidia fasciculata, by using p-nitrocatecholsulphate as substrate. Positive reaction was located exclusively inside membrane-bound cytoplasmic vesicles distributed throughout the cell body. Electron-dense reaction was either dispersed homogeneously through the vesicular matrix or located at the vesicle periphery, apposed to the membrane, with fine granular deposits occasionally found at the vesicular matrix. Trypomastigote and epimastigote forms of T. cruzi lacked electron-dense deposits at the plasma membrane, thus indicating that aryl sulphatase was not secreted to the environment. Furthermore, no positive reaction was detected in epimastigote reservosomes, which are organelles considered as pre-lysosomal compartments. Thus, our data show that reservosomes and lysosomes are organelles that can be distinguished by the cytochemical localization of aryl sulphatase in T. cruzi epimastigotes and trypomastigotes. Positive reaction in cytoplasmic vesicles of C. fasciculata choanomastigotes confirmed the specificity of the reaction for lysosomes in other trypanosomatid species.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0968-4328
pubmed:author
pubmed:issnType
Print
pubmed:volume
38
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
252-6
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Ultrastructural localization of Trypanosoma cruzi lysosomes by aryl sulphatase cytochemistry.
pubmed:affiliation
Laboratório de Biologia Celular de Microrganismos, Departamento de Ultra-estrutura e Biologia Celular, Instituto Oswaldo Cruz, FIOCRUZ, Av. Brasil 4365, 21040-900 Rio de Janeiro, RJ, Brazil. cadade@ioc.fiocruz.br
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't