Effects of treatment with DMA (6,7 dimethoxi-4-N(3 - N , N -dimethil) phenilaminazoline in atherosclerosis in LDLr-I-mice / Efeitos do tratamento com DMA 6, 7-Dimetoxi-4-N-(3 - N , N -dimetil) fenilaminoquinazolina na aterosclerose em camundongos LDLr

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

Atherosclerosis is characterized by the recruitment of monocytes and lymphocytes to the artery wall. A triggering event for this process is the accumulation of minimmally oxidized LDL, which stimulates the overlying endothelial cells to produce a number of pro-inflammatory molecules, including hemodynamic forces, sex hormones and infection. We demonstrated that DMA, ,7-Dimethoxi-4-N-(3?-N?,N?-dimethyl)phenilaminoquinazoline, have an anti-atherogenic effect in mice LDLr-/-. This effect could have a relationship with an anti-inflammatory property of adenosine in tissues, by the inhibition of adenosine kinase. Results showed that DMA administrated by oral via, as prevent treatment, as pre-established lesions, in mice LDLr-/- with hypercholesterolemic diet (1,25% cholesterol and 0,5% colic acid), decreases atherosclerotic lesions in 67% and 52% respectively in relation of the vehicle group. These data was obtained by planimmetric study of atherosclerotic lesions in the base of aortic arthery with Oil Red O especific for lipids. The hypercholesterolemic diet by 15 and 30 days, decreases serum tryglicerides in 50%, in the other way, the treatment with DMA cancelled this reduction. At the same time, HC diet by 15 and 30 days increases total cholesterol serum, in 2 times in mice LDLr-/-. Mice treatment with DMA and hypercholesterolemic diet showed serum cholesterol higher than the HC group (control). Results demonstrated that this increase have relationship with higher HDL serum level in mice treated with compound. All mice in treatment (DMA and Vehicle group) had the weight decreased

ASSUNTO(S)

aterosclerose cholesterol colesterol inflammation atherosclerosis inflamação

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