Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 12 de 12
Filtrar
Mais filtros










Base de dados
Intervalo de ano de publicação
6.
J Physiol Pharmacol ; 45(4): 493-9, 1994 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-7727794

RESUMO

During ischaemia, there was no apparent change in malondialdehyde (MDA) content in rat myocardium. However, reoxygenation resulted in a significant increase in MDA content. The changes evoked by ischaemia and reoxygenation were significantly attenuated by addition of fenistil (histamine H1 receptor antagonist). Enzymatic antioxidant systems were not significantly modified in the different periods of ischaemia and after 30 min of reoxygenation. It is suggested, that maintenance of an adequate endogenous antioxidant reserve during ischaemia may be important in recovery upon reoxygenation.


Assuntos
Isquemia Miocárdica/patologia , Traumatismo por Reperfusão Miocárdica/patologia , Receptores Histamínicos H1/fisiologia , Animais , Antioxidantes/metabolismo , Sistema de Condução Cardíaco/efeitos dos fármacos , Peroxidação de Lipídeos/fisiologia , Masculino , Malondialdeído/metabolismo , Isquemia Miocárdica/enzimologia , Isquemia Miocárdica/metabolismo , Traumatismo por Reperfusão Miocárdica/enzimologia , Traumatismo por Reperfusão Miocárdica/metabolismo , Ratos , Ratos Wistar
8.
Mech Ageing Dev ; 29(2): 111-6, 1985 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-3156264

RESUMO

Rabbits fed a high-cholesterol diet for 3 months showed an increase in peripheral blood lymphocytes with membrane receptors for the Fc portion of immunoglobulin G and a decrease in lymphocytes with receptors for the Fc portion of immunoglobulin M and also with receptors for the third component of the complement. Thus our results indicate changes in lymphocyte membrane receptor expression in experimental hyperlipidemia that may supposedly influence some lymphocyte functions.


Assuntos
Hiperlipidemias/sangue , Fragmentos Fc das Imunoglobulinas/metabolismo , Fragmentos de Imunoglobulinas/metabolismo , Linfócitos/ultraestrutura , Receptores de Complemento/metabolismo , Receptores Fc , Receptores Imunológicos/metabolismo , Animais , Colesterol/análise , Colesterol/sangue , HDL-Colesterol/sangue , LDL-Colesterol/sangue , Eritrócitos/imunologia , Lipoproteínas VLDL/análise , Coelhos , Receptores de IgG , Formação de Roseta , Linfócitos T/imunologia
10.
Acta Physiol Pol ; 33(4): 353-60, 1982.
Artigo em Inglês | MEDLINE | ID: mdl-7184319

RESUMO

In order to explain whether the arterial smooth muscle exhibits altered contractile properties in atherosclerosis, normal and atherosclerotic rabbit aortic strips were exposed to noradrenaline (NA) and potassium chloride (KCl). The experiments were repeated with normal blood and the containing an excess of free fatty acids (FFA) added to the bath. Contraction induced by NA was markedly enhanced in the atherosclerotic trips. In contrast the response of atherosclerotic aorta strips to KCl was reduced. Excess FFA blood added to the bath with NA normalized the previously enhanced contractile response in atherosclerotic aortic strips. An opposite change in KCl induced contraction was observed under the some conditions namely increased response occurred. We conclude that the enhanced reaction of atherosclerotic aortic strips to NA depending on a specific mechanism might be reversed by elevation of FFA in blood.


Assuntos
Aorta/fisiopatologia , Arteriosclerose/fisiopatologia , Contração Muscular/efeitos dos fármacos , Norepinefrina/farmacologia , Potássio/farmacologia , Animais , Ácidos Graxos não Esterificados/sangue , Masculino , Coelhos
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...