Mural features of the abdominal aortic segment of albino rat - DOI: 10.4025/actascibiolsci.v29i4.825
Autor(a) principal: | |
---|---|
Data de Publicação: | 2008 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Acta Scientiarum Biological Sciences |
Texto Completo: | http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/825 |
Resumo: | The objective of the present research was to investigate the ultrastructural peculiarities of the aortic wall of the rat. Seven young adult rats were used, from which fragments of the infrarenal abdominal aorta were collected. After collection, the vascular segments were fixed and sent for analysis by scanning electron microscope. The elastic lamellae appear interposed with smooth muscular fibers; this pattern was verified mainly at the medial layer structure. Among the mural elements a well defined interrelationship was established through connective lamellae of the arterial wall. The collagen lamellae mainly provided anchoring among the elastic and smooth muscular constituents. The intimal layer showed special ultrastructural features, such as a non-continuous inner elastic lamina presented in certain sites of the vascular wall, followed by endothelial pores. This mural pattern of the abdominal aorta provided support to vascular functions such as shrinkage among the laminar composition of the arterial layers, also acting in mechanical properties of the vascular wall, such as viscoelasticity and contractility – essential actions to blood vessel hemodynamics. |
id |
UEM-1_571bd8444f4b85d51f74da73dee9320b |
---|---|
oai_identifier_str |
oai:periodicos.uem.br/ojs:article/825 |
network_acronym_str |
UEM-1 |
network_name_str |
Acta Scientiarum Biological Sciences |
repository_id_str |
|
spelling |
Mural features of the abdominal aortic segment of albino rat - DOI: 10.4025/actascibiolsci.v29i4.825Características ultraestruturais do segmento abdominal da aorta de rato albino - DOI: 10.4025/actascibiolsci.v29i4.825aorta abdominalultraestruturarato albino2.06.04.00-9 AnatomiaThe objective of the present research was to investigate the ultrastructural peculiarities of the aortic wall of the rat. Seven young adult rats were used, from which fragments of the infrarenal abdominal aorta were collected. After collection, the vascular segments were fixed and sent for analysis by scanning electron microscope. The elastic lamellae appear interposed with smooth muscular fibers; this pattern was verified mainly at the medial layer structure. Among the mural elements a well defined interrelationship was established through connective lamellae of the arterial wall. The collagen lamellae mainly provided anchoring among the elastic and smooth muscular constituents. The intimal layer showed special ultrastructural features, such as a non-continuous inner elastic lamina presented in certain sites of the vascular wall, followed by endothelial pores. This mural pattern of the abdominal aorta provided support to vascular functions such as shrinkage among the laminar composition of the arterial layers, also acting in mechanical properties of the vascular wall, such as viscoelasticity and contractility – essential actions to blood vessel hemodynamics.O objetivo da presente pesquisa foi investigar as peculiaridades ultraestruturais da parede da aorta de rato. Foram utilizados sete ratos albinos, adultos jovens, dos quais foram coletados fragmentos da aorta abdominal infra-renal. Após a coleta, os segmentos vasculares foram fixados e encaminhados para a rotina de microscopia eletrônica de transmissão e varredura. As lamelas elásticas aparecem interpostas às fibras musculares lisas, sendo essa disposição principalmente notada na túnica média da parede vascular. Entre as fibras musculares lisas e as lamelas elásticas, observa-se um inter-relacionamento aparentemente estreito, feito por conexão e ancoramento entre ambos os elementos murais por meio de lamelas de colágeno. A túnica íntima da aorta abdominal do rato mostra algumas peculiaridades ultraestruturais marcantes, tais como a interrupção, em certos locais da parede, de continuidade da lâmina elástica interna, interrupção acompanhada por poros endoteliais, de certa extensão, suprajacentes à falha na estrutura elástica intimal. Este padrão de constituição mural, com destaque aos ancoramentos elástico-musculares, via o colágeno, parece garantir propriedades fundamentais da parede vascular, concernentes à hemodinâmica, tal como o cisalhamento, normalmente notado entre os estratos superpostos da parede vascular, bem como a contratilidade e a visco-elasticidade da parede arterial.Universidade Estadual De Maringá2008-02-21info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/82510.4025/actascibiolsci.v29i4.825Acta Scientiarum. Biological Sciences; Vol 29 No 4 (2007); 343-348Acta Scientiarum. Biological Sciences; v. 29 n. 4 (2007); 343-3481807-863X1679-9283reponame:Acta Scientiarum Biological Sciencesinstname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/825/420Mello, Josiane Medeiros deTorrejais, Márcia MirandaMatheus, Selma Maria MichelinDomeniconi, Raquel FantinSimões, KarinaOrsi, Antonio Marcosinfo:eu-repo/semantics/openAccess2022-11-23T17:33:00Zoai:periodicos.uem.br/ojs:article/825Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/oai||actabiol@uem.br1807-863X1679-9283opendoar:2022-11-23T17:33Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Mural features of the abdominal aortic segment of albino rat - DOI: 10.4025/actascibiolsci.v29i4.825 Características ultraestruturais do segmento abdominal da aorta de rato albino - DOI: 10.4025/actascibiolsci.v29i4.825 |
title |
Mural features of the abdominal aortic segment of albino rat - DOI: 10.4025/actascibiolsci.v29i4.825 |
spellingShingle |
Mural features of the abdominal aortic segment of albino rat - DOI: 10.4025/actascibiolsci.v29i4.825 Mello, Josiane Medeiros de aorta abdominal ultraestrutura rato albino 2.06.04.00-9 Anatomia |
title_short |
Mural features of the abdominal aortic segment of albino rat - DOI: 10.4025/actascibiolsci.v29i4.825 |
title_full |
Mural features of the abdominal aortic segment of albino rat - DOI: 10.4025/actascibiolsci.v29i4.825 |
title_fullStr |
Mural features of the abdominal aortic segment of albino rat - DOI: 10.4025/actascibiolsci.v29i4.825 |
title_full_unstemmed |
Mural features of the abdominal aortic segment of albino rat - DOI: 10.4025/actascibiolsci.v29i4.825 |
title_sort |
Mural features of the abdominal aortic segment of albino rat - DOI: 10.4025/actascibiolsci.v29i4.825 |
author |
Mello, Josiane Medeiros de |
author_facet |
Mello, Josiane Medeiros de Torrejais, Márcia Miranda Matheus, Selma Maria Michelin Domeniconi, Raquel Fantin Simões, Karina Orsi, Antonio Marcos |
author_role |
author |
author2 |
Torrejais, Márcia Miranda Matheus, Selma Maria Michelin Domeniconi, Raquel Fantin Simões, Karina Orsi, Antonio Marcos |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Mello, Josiane Medeiros de Torrejais, Márcia Miranda Matheus, Selma Maria Michelin Domeniconi, Raquel Fantin Simões, Karina Orsi, Antonio Marcos |
dc.subject.por.fl_str_mv |
aorta abdominal ultraestrutura rato albino 2.06.04.00-9 Anatomia |
topic |
aorta abdominal ultraestrutura rato albino 2.06.04.00-9 Anatomia |
description |
The objective of the present research was to investigate the ultrastructural peculiarities of the aortic wall of the rat. Seven young adult rats were used, from which fragments of the infrarenal abdominal aorta were collected. After collection, the vascular segments were fixed and sent for analysis by scanning electron microscope. The elastic lamellae appear interposed with smooth muscular fibers; this pattern was verified mainly at the medial layer structure. Among the mural elements a well defined interrelationship was established through connective lamellae of the arterial wall. The collagen lamellae mainly provided anchoring among the elastic and smooth muscular constituents. The intimal layer showed special ultrastructural features, such as a non-continuous inner elastic lamina presented in certain sites of the vascular wall, followed by endothelial pores. This mural pattern of the abdominal aorta provided support to vascular functions such as shrinkage among the laminar composition of the arterial layers, also acting in mechanical properties of the vascular wall, such as viscoelasticity and contractility – essential actions to blood vessel hemodynamics. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-02-21 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/825 10.4025/actascibiolsci.v29i4.825 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/825 |
identifier_str_mv |
10.4025/actascibiolsci.v29i4.825 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/825/420 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Biological Sciences; Vol 29 No 4 (2007); 343-348 Acta Scientiarum. Biological Sciences; v. 29 n. 4 (2007); 343-348 1807-863X 1679-9283 reponame:Acta Scientiarum Biological Sciences instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta Scientiarum Biological Sciences |
collection |
Acta Scientiarum Biological Sciences |
repository.name.fl_str_mv |
Acta Scientiarum Biological Sciences - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
||actabiol@uem.br |
_version_ |
1799317391907225600 |