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Tensile strength and histological changes of abdominal aorta of malnourished rats
(1995-01-01)
The resistance of the abdominal aorta of rats after 6, 7 and 8 weeks of malnutrition, compared with control animals, was evaluated by longitudinal tensiometry. Weakness of this vessel in malnourished rats was demonstrated; ...
Morphologic and biomechanical changes of thoracic and abdominal aorta in a rat model of cigarette smoke exposure
(2013-08-01)
Background: Smoking is the most relevant environmental factor that affects the development of aortic aneurysm. Smokers have elevated levels of elastase activity in the arterial wall, which leads to weakening of the aorta. ...
Effects of castration on alpha(1)-adrenoceptor subtypes in the rat aorta
(Elsevier B.V., 2002-12-01)
The expression of alpha(1)-adrenoceptor subtypes in several tissues is regulated by gonadal hormones. In this study, we investigated whether castration regulates the alpha(1)-adrenoceptor subtypes mediating the contractions ...
Características ultraestruturais do segmento abdominal da aorta de rato albino
(2007-10-01)
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 ...
Gross anatomical study of the aortic ARC branches of the paca (Agouti paca, Linnaeus, 1766)
(Universidade de São Paulo (USP), Faculdade de Medicina Veterinária e Zootecnia (FMVZ), 2001-01-01)
Foi descrita a distribuição do arco aórtico de oito animais da espécie Agouti paca, sendo duas fêmeas adultas e seis filhotes jovens (3 machos e 3 fêmeas) que foram obtidos no Setor de Animais Silvestres da Faculdade de ...
Morphological and biomechanical study of abdominal aorta of rats submitted to experimental chronic alcoholism
(Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia, 2005-06-01)
OBJETIVO: avaliar a influência do alcoolismo crônico experimental na morfologia e biomecânica da artéria aorta de ratos. MÉTODOS:ratos Wistar foram divididos em dois grupos de 22 animais. Grupo alcoolista: os ratos receberam ...
Utilização de endoprótese autoexpansível (stent) posicionada naaorta torácica do cão
(Sociedade Brasileira de Cirurgia Cardiovascular, 1997-07-01)
We present 5 dogs who underwent treatment with an auto-expandable Dacron-covered stent in the thoracic aorta. The catheter with stents was deployed through the abdominal aorta. The procedure was performed under total ...
Carotid artery atherosclerotic profile as a predictor of the aorta atherosclerotic profile in patients with cerebrovascular events
(2013-09-01)
Background: It is well known that the presence of atheroma of the thoracic aorta is a risk factor for cerebrovascular events. We sought to evaluate whether the presence and the morphology of atherosclerotic plaque in the ...
The sympathetic adrenomedullary system, but not the hypothalamic-pituitary-adrenal axis, participates in aorta adaptive response to stress: nitric oxide involvement
(Elsevier B.V., 2000-10-02)
Stress induced a decrease in the reactivity of the aorta to noradrenaline (NA), as a consequence of an endothelial nitric oxide (NO) system hyperactivity. The main characteristic of the stress response is activation of the ...
Endovascular treatment of pseudoaneurysm of the thoracic aorta from a firearm injury
(2008-06-01)
A 24-year-old male patient was the victim of a firearm wound that penetrated the thorax. He arrived at another hospital hemodynamically unstable and was submitted to exploratory surgery by means of bithoracotomy. A lesion ...