Cell Membrane Lipids Peroxidation
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Efeito da acupuntura e da eletro acupuntura sobre a glicemia lactacemia e as concentraÃÃes de lactato no fÃgado e rim de ratos sadios / Effects of acupuncture and electroacupunture on oxidative stress in healthy rats
A acupuntura (Ac) Ã uma forma de terapia que busca a cura das enfermidades pela aplicaÃÃo de estÃmulos atravÃs da pele, com a inserÃÃo de agulhas em pontos especÃficos denominados acupontos. A eletroacupuntura (EAc) consiste na aplicaÃÃo de corrente elÃtrica de baixa intensidade e freqÃÃncia variÃvel em agulhas metÃlicas introduzidas no corpo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/12/2010
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2. Efeitos do tratamento com l-alanil-glutamina sobre o estresse oxidativo em ratos jovens submetidos à torÃÃo do cordÃo espermÃtico / Effects of l-alanil-glutamine treatment upon oxidative stress in youn rats subjected to torsion of spermatic cord
The effect of L-alanil-glutamine was tested in a situation of oxidative stress induced by torsion of the spermatic cord. Eighty four male young Wistar rats were distributed randomly in 6 groups: Saline group 1h (GSa1) and Ala-Gln Group 1h (GAg1), animals of these groups were submitted to 1 hour of ischemia and 6 hours of reperfusion and were treated 30 minut
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/01/2008
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3. Effects of dimethylsulfoxide, lipoic acid or ternatin pretreatment upon the oxidative stress in young rats subjected to torsion of the spermatic cord / Efeitos do pré-tratamento com dimetilsufóxido, ácido lipóico ou ternatina sobre o estresse oxidativo
The protective role of dimethylsulfoxide (DMSO), lipoic acid (LA) and ternatin (TN), known free radical scavengers and cell membrane protectants were evaluated in an experimental model of testis ischemia/reperfusion. One hundred and twenty young male Wistar rats, mean weight 172.515g, were randomized in five equal groups (GS - Sham, GC Control, GD Dimethylsu
Publicado em: 2005
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4. Aluminum Tolerance Acquired during Phosphate Starvation in Cultured Tobacco Cells.
Al toxicity in cultured tobacco cells (Nicotiana tabacum L. cv Samsun; nonchlorophyllic cell line SL) has been investigated in nutrient medium. In this system, Al and Fe(II) (ferrous ion) in the medium synergistically result in the accumulation of both Al and Fe, the peroxidation of lipids, and eventually death in cells at the logarithmic phase of growth (+P
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5. Peroxidation of Tobacco Membrane Lipids by the Photosensitizing Toxin, Cercosporin 1
Cercosporin, a nonspecific toxin from Cercospora species, is a photosensitizing compound which rapidly kills plant cells in the light. Cell death appears to be due to a cercosporin-mediated peroxidation of membrane lipids. Tobacco leaf discs treated with cercosporin showed a large increase in electrolyte leakage 1 to 2 minutes after irradiation with light. A
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6. Impact of Post-Anoxia Stress on Membrane Lipids of Anoxia-Pretreated Potato Cells. A Re-Appraisal1
The importance of lipid peroxidation and its contributing pathways (via reactive oxygen species and lipoxygenase) during post-anoxia was evaluated with respect to the biphasic behavior of membrane lipids under anoxia (A. Rawyler, D. Pavelic, C. Gianinazzi, J. Oberson, R. Brändle [1999] Plant Physiol 120: 293–300), using potato (Solanum tuberosum cv Bintje
American Society of Plant Physiologists.
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7. Potential for free radical-induced lipid peroxidation as a cause of endothelial cell injury in Rocky Mountain spotted fever.
Cells infected by Rickettsia rickettsii, the causative agent of Rocky Mountain spotted fever, display unusual intracellular morphological changes characterized by dilatation of the membranes of the endoplasmic reticulum and outer nuclear envelope. These changes are consistent with those that might be expected to occur following peroxidation of membrane lipid
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8. Changes in Lipid Peroxidation and Lipolytic and Free-Radical Scavenging Enzyme Activities during Aging and Sprouting of Potato (Solanum tuberosum) Seed-Tubers.
Previous research has shown that cell membranes of potato (Solanum tuberosum L. cv Russet Burbank) seed-tubers lose integrity between 7 and 26 months of storage (4[deg]C, 95% relative humidity), and this loss coincides with a significant decrease in growth potential. The age-induced decline in membrane integrity is apparently due to increased peroxidative da
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9. Anaerobic phagocytosis, killing, and degradation of Streptococcus pneumoniae by human peripheral blood leukocytes.
Encapsulated Streptococcus pneumoniae of serotypes 2, 9N, 14, 21, and 23F and an unencapsulated variant of type 2 pneumococci were efficiently phagocytosed by both aerobically and anaerobically incubated human leukocytes. In the presence of O2, the pneumococci rapidly lost their viability, whereas during anaerobiosis, killing was considerably delayed. Type 1
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10. Recognition of oxidatively damaged erythrocytes by a macrophage receptor with specificity for oxidized low density lipoprotein.
Macrophages specifically bind and internalize oxidatively modified low density lipoprotein (LDL) via the acetyl-LDL receptor and possibly one or more additional receptors jointly designated here as scavenger receptors. It is well accepted that these receptors are intimately involved in the formation of foam cells during atherogenesis. However, the normal phy