Ultrastructural aspects of acid phosphatase activity in Malpighian tubules of Triatoma infestans Klug

Detalhes bibliográficos
Autor(a) principal: De Azeredo-Oliveira, Maria Tercília Vilela [UNESP]
Data de Publicação: 1998
Outros Autores: Mello, Maria Luiza Silveira
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://hdl.handle.net/11449/224665
Resumo: Acid phosphatase activity was investigated ultrastructurally in Malpighian tubules of Triatoma infestans. Enzyme activity was demonstrated in laminated 'concretions' (distal cells) and in typical lysosomes, as well as in basal plasmalemma infoldings and basement membranes (especially in distal cells). This activity was assumed to be related to the excretory functions carried out mostly by the distal cells. Heterochromatin-nucleolus functional relationships involving RNA transcription may promote the nuclear reaction verified in the proximal cells and in some distal cells. A lead phosphate precipitate appeared free in the cytoplasm encircling the nuclei and was assumed to be a contamination from the nuclear precipitates.
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spelling Ultrastructural aspects of acid phosphatase activity in Malpighian tubules of Triatoma infestans KlugAcid phosphatasesHeterochromatinLysosomesMalpighian tubulesNucleolusTriatoma infestansAcid phosphatase activity was investigated ultrastructurally in Malpighian tubules of Triatoma infestans. Enzyme activity was demonstrated in laminated 'concretions' (distal cells) and in typical lysosomes, as well as in basal plasmalemma infoldings and basement membranes (especially in distal cells). This activity was assumed to be related to the excretory functions carried out mostly by the distal cells. Heterochromatin-nucleolus functional relationships involving RNA transcription may promote the nuclear reaction verified in the proximal cells and in some distal cells. A lead phosphate precipitate appeared free in the cytoplasm encircling the nuclei and was assumed to be a contamination from the nuclear precipitates.Department of Biology Universidade Estadual Paulista, R. Cristovao Colombo 2265, Sao Jose do Rio Preto, SPDepartment of Cell Biology Institute of Biology UNICAMP, CEP 13083-970, Campinas, SPDepartment of Biology Universidade Estadual Paulista, R. Cristovao Colombo 2265, Sao Jose do Rio Preto, SPUniversidade Estadual Paulista (UNESP)Universidade Estadual de Campinas (UNICAMP)De Azeredo-Oliveira, Maria Tercília Vilela [UNESP]Mello, Maria Luiza Silveira2022-04-28T20:06:50Z2022-04-28T20:06:50Z1998-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article33-42Cytobios, v. 1998, n. 372, p. 33-42, 1998.0011-4529http://hdl.handle.net/11449/2246652-s2.0-2942578137Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengCytobiosinfo:eu-repo/semantics/openAccess2022-04-28T20:06:50Zoai:repositorio.unesp.br:11449/224665Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:08:26.764248Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Ultrastructural aspects of acid phosphatase activity in Malpighian tubules of Triatoma infestans Klug
title Ultrastructural aspects of acid phosphatase activity in Malpighian tubules of Triatoma infestans Klug
spellingShingle Ultrastructural aspects of acid phosphatase activity in Malpighian tubules of Triatoma infestans Klug
De Azeredo-Oliveira, Maria Tercília Vilela [UNESP]
Acid phosphatases
Heterochromatin
Lysosomes
Malpighian tubules
Nucleolus
Triatoma infestans
title_short Ultrastructural aspects of acid phosphatase activity in Malpighian tubules of Triatoma infestans Klug
title_full Ultrastructural aspects of acid phosphatase activity in Malpighian tubules of Triatoma infestans Klug
title_fullStr Ultrastructural aspects of acid phosphatase activity in Malpighian tubules of Triatoma infestans Klug
title_full_unstemmed Ultrastructural aspects of acid phosphatase activity in Malpighian tubules of Triatoma infestans Klug
title_sort Ultrastructural aspects of acid phosphatase activity in Malpighian tubules of Triatoma infestans Klug
author De Azeredo-Oliveira, Maria Tercília Vilela [UNESP]
author_facet De Azeredo-Oliveira, Maria Tercília Vilela [UNESP]
Mello, Maria Luiza Silveira
author_role author
author2 Mello, Maria Luiza Silveira
author2_role author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
Universidade Estadual de Campinas (UNICAMP)
dc.contributor.author.fl_str_mv De Azeredo-Oliveira, Maria Tercília Vilela [UNESP]
Mello, Maria Luiza Silveira
dc.subject.por.fl_str_mv Acid phosphatases
Heterochromatin
Lysosomes
Malpighian tubules
Nucleolus
Triatoma infestans
topic Acid phosphatases
Heterochromatin
Lysosomes
Malpighian tubules
Nucleolus
Triatoma infestans
description Acid phosphatase activity was investigated ultrastructurally in Malpighian tubules of Triatoma infestans. Enzyme activity was demonstrated in laminated 'concretions' (distal cells) and in typical lysosomes, as well as in basal plasmalemma infoldings and basement membranes (especially in distal cells). This activity was assumed to be related to the excretory functions carried out mostly by the distal cells. Heterochromatin-nucleolus functional relationships involving RNA transcription may promote the nuclear reaction verified in the proximal cells and in some distal cells. A lead phosphate precipitate appeared free in the cytoplasm encircling the nuclei and was assumed to be a contamination from the nuclear precipitates.
publishDate 1998
dc.date.none.fl_str_mv 1998-12-01
2022-04-28T20:06:50Z
2022-04-28T20:06:50Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv Cytobios, v. 1998, n. 372, p. 33-42, 1998.
0011-4529
http://hdl.handle.net/11449/224665
2-s2.0-2942578137
identifier_str_mv Cytobios, v. 1998, n. 372, p. 33-42, 1998.
0011-4529
2-s2.0-2942578137
url http://hdl.handle.net/11449/224665
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Cytobios
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 33-42
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808128900711055360

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