scholarly journals Efeito do Óleo de Coco sobre a Morfologia da Aorta de Ratos Obesos

2015 ◽  
Vol 8 (1) ◽  
pp. 35
Author(s):  
Willian Travain ◽  
Hanna Carolina Bet Dos Santos ◽  
Valéria Schoffen Romao Carrascoza ◽  
Márcia Do Nascimento Brito ◽  
Célia Regina Godoy Gomes

O objetivo desse estudo foi avaliar a influência do óleo de coco sobre morfologia da aorta torácica. Foram utilizados 23 animais, com 120 dias de idade. Os animais foram inicialmente separados em dois grupos, controle (tratado com dieta padrão para roedores) e obeso (tratado com dieta hipercalórica para induzir a obesidade). Aos 90 dias, os animais dos grupos controle e obeso foram subdivididos em dois grupos adicionais: C/ag, C/co, O/ag, O/co. Aos 120 dias foram eutanasiados com pentobarbitol sódico. As aortas torácicas extraídas foram processadas histologicamente e coradas com Tricrômico de Masson e Orceína-picrussírus-hematoxilina para visualização dos componentes colágeno, músculo liso e elástico, seguida da quantificação realizada por densidade de volume. Realizou-se a medida íntima-média, para verificação da espessura do vaso. A estatística seguiu Análise de Variância de um fator (ANOVA), seguida pelo teste de Tukey, para nível de significância de 5%. Concluímos que a utilização de óleo de coco em ratos obesos parece induzir uma remodelação vascular marcada pela diminuição na composição de colágeno e aumento de células musculares lisas em ratos obesos tratados com óleo de coco. Effects of Coconut Oil on the Morphology of Obese Rats´ Aorta ABSTRACT: Current study analyzes the influence of coconut oil on the morphology of the thorax aorta in 23 rats aged 120 days. The animals were separated into two groups, control (treated with standard ration for rodents) and obese (treated with a hypercaloric diet to induce obesity). After 90 days the control and obese groups were subdivided into two additional groups: C/ag, C/co, O/ag, O/co. On the 120th day the rats were euthanized with sodium pentobarbitol. The thorax aortas were removed and histologically processed. They were stained with Masson Trichromium and orcein-picrosirius-hematoxylin to visualize collagen components, smooth and elastic muscle, followed by volume density. Vessel thickness was evaluated by intima-media measure. Analysis of variance (ANOVA) and Tukey´s test were employed at 5% significance. The use of coconut oil in obese rats may have induced vascular re-modeling by decreasing the composition of collagen and increasing the smooth muscle cells in obese rats treated with coconut oil.

Author(s):  
J.M. Minda ◽  
E. Dessy ◽  
G. G. Pietra

Pulmonary lymphangiomyomatosis (PLAM) is a rare disease occurring exclusively in women of reproductive age. It involves the lungs, lymph nodes and lymphatic ducts. In the lungs, it is characterized by the proliferation of smooth muscle cells around lymphatics in the bronchovascular bundles, lobular septa and pleura The nature of smooth muscle proliferation in PLAM is still unclear. Recently, reactivity of the smooth muscle cells for HMB-45, a melanoma-related antigen has been reported by immunohistochemistry. The purpose of this study was the ultrastructural localization of HMB-45 immunoreactivity in these cells using gold-labeled antibodies.Lung tissue from three cases of PLAM, referred to our Institution for lung transplantation, was embedded in either Poly/Bed 812 post-fixed in 1% osmium tetroxide, or in LR White, without osmication. For the immunogold technique, thin sections were placed on Nickel grids and incubated with affinity purified, monoclonal anti-melanoma antibody HMB-45 (1:1) (Enzo Diag. Co) overnight at 4°C. After extensive washing with PBS, grids were treated with Goat-anti-mouse-IgG-Gold (5nm) (1:10) (Amersham Life Sci) for 1 hour, at room temperature.


2004 ◽  
Vol 171 (4S) ◽  
pp. 46-46
Author(s):  
Carlos R. Estrada ◽  
Theodora Danciu ◽  
Maximilian Stehr ◽  
Joseph Khoury ◽  
Keith R. Solomon ◽  
...  

2004 ◽  
Vol 171 (4S) ◽  
pp. 452-452
Author(s):  
Grace Hyun ◽  
Shaohua Chang ◽  
Stephen A. Zderic ◽  
Alan J. Wein ◽  
Samuel Chacko ◽  
...  

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