Cholesterol Oxides
Mostrando 13-21 de 21 artigos, teses e dissertações.
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13. Factors influencing the formation of cholesterol oxides in seafoods rich in polyunsaturated fatty acids. / Fatores que influenciam a formação de oxidos de colesterol em produtos marinhos ricos em acidos graxos poliinsaturados.
Devido aos efeitos adversos dos óxidos de colesterol, a ocorrência e quantificação destes compostos em alimentos in natura ou processados são consideradas de grande importância para a saúde pública. A intensidade da oxidação do colesterol em pescados depende de diversos fatores como concentração do colesterol, tipos de ácidos graxos presentes na
Publicado em: 2006
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14. Effect of gamma radiation and storage on cholesterol oxidative stability of raw and processed eggs. / Efeito da radiação ionizante e do armazenamento sobre a estabilidade oxidativa do colesterol em ovos crus e processados
The egg have being studied due its nutritional wealth, for show industrial interest as a raw material, e due its higher cholesterol content. At the same time, due its susceptibility to contamination mainly with salmonella, it is being proposed the ionizating radiation as a hygienic measure. Cholesterol is subject to oxidation, that it is facilitated by sever
Publicado em: 2005
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15. Estabilidade oxidativa do colesterol em ovo integral em pó e em macarrão contendo ovos medida através do 7-cetocolesterol livre / Cholesterol oxidative stability in whole egg powder and pasta with eggs measured by free 7-ketocholesterol
O ovo é importante como alimento e matéria-prima industrial. O ovo é rico em colesterol que, por sua vez, está sujeito à oxidação, formando-se óxidos tóxicos. O presente trabalho teve como objetivos, a avaliação da formação do 7-cetocolesterol livre em ovo integral em pó e em macarrão contendo ovos, e a verificação da estabilidade oxidativa
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/04/2004
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16. Determinação dos óxidos de colesterol em pacientes diabéticos e intolerantes à glicose / Cholesterol oxides as biomarkers of oxidative stress in type 1 and type 2 diabetes mellitus
Oxidative stress can play an important role in the etiology of the complications of diabetes mellitus. The increase in the production of oxidant species promotes alterations in endogenous molecules, including cholesterol. Cholesterol oxides (COx) are formed by the oxidation of cholesterol by enzymatic processes or by processes involving free radicals. They p
Publicado em: 2004
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17. Oxidos de coleterol, colesterol, lipidios totais e acidos graxos em produtos caneos processados. / Oxides of cholesterol, total and acid cholesterol, greasy lipídios in processed cárneos products.
Produtos cárneos processados como lingüiça, salsicha, mortadela, presunto e salame são muito apreciados pela população, mas, em geral, são considerados alimentos que apresentam altos teores de colesterol, lipídios totais e ácidos graxos saturados. O alto teor de colesterol sangüíneo é uma das causas das doenças cardíacas coronarianas e o colest
Publicado em: 2004
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18. Lipid peroxidation and nitric oxide inactivation in postmenopausal women
OBJECTIVE: To assess the effect of endogenous estrogens on the bioavailability of nitric oxide (·NO) and in the formation of lipid peroxidation products in pre- and postmenopausal women. METHODS: NOx and S-nitrosothiols were determined by gaseous phase chemiluminescence, nitrotyrosine was determined by ELISA, COx (cholesterol oxides) by gas chromatography,
Arquivos Brasileiros de Cardiologia. Publicado em: 2003-04
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19. Nitric oxide, cholesterol oxides and endothelium-dependent vasodilation in plasma of patients with essential hypertension
The objective of the present study was to identify disturbances of nitric oxide radical (·NO) metabolism and the formation of cholesterol oxidation products in human essential hypertension. The concentrations of·NO derivatives (nitrite, nitrate, S-nitrosothiols and nitrotyrosine), water and lipid-soluble antioxidants and cholesterol oxides were measured in
Brazilian Journal of Medical and Biological Research. Publicado em: 2002-11
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20. Diet-induced atherosclerosis increases the release of nitrogen oxides from rabbit aorta.
We examined the hypothesis that impaired endothelium-dependent vasodilation in atherosclerosis is associated with decreased synthesis of nitrogen oxides by the vascular endothelium. The descending thoracic aortae of rabbits fed either normal diet, a high cholesterol diet for 2-5 wk (hypercholesterolemic, HC), or a high cholesterol diet for 6 mo (atherosclero
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21. 7-Ketocholesterol Incorporation into Sphingolipid/Cholesterol-enriched (Lipid Raft) Domains Is Impaired by Vitamin E: A SPECIFIC ROLE FOR α-TOCOPHEROL WITH CONSEQUENCES ON CELL DEATH*
Cholesterol oxides, in particular 7-ketocholesterol, are proatherogenic compounds that induce cell death in the vascular wall when localized in lipid raft domains of the cell membrane. Deleterious effects of 7-ketocholesterol can be prevented by vitamin E, but the molecular mechanism involved is unclear. In this study, unlike γ-tocopherol, the α-tocopherol
American Society for Biochemistry and Molecular Biology.