Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 5 de 5
Filtrar
Mais filtros








Base de dados
Intervalo de ano de publicação
1.
Auton Autacoid Pharmacol ; 30(3): 167-72, 2010 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-20102360

RESUMO

Pregnancy courses with low response to angiotensin II and adrenergic agonists. In preeclampsia, both effects are reverted. It is known that angiotensin II regulates adrenergic system. It is not known, however, the interaction between both systems receptors. Our aim was to study if AT(1)R and alpha1D adrenoceptor heterodimerize in preeclampsia. We used subrenal aorctic coarctation in pregnant rats. Aortic tissues were prepared for confocal imaging and coimmunoprecipitated for alpha1D and AT(1) receptors. We found that AT(1)R and alpha1D adrenoceptor heterodimerize in both, healthy and preeclamptic groups. In healthy pregnant rats, heterodimer is barely detected. In preeclamptic rats however, we found higher heterodimerization. These results suggest that AT(1)R and alpha1D -adrenoceptor may form heterodimers, and may play a role in preeclampsia.


Assuntos
Hipertensão Induzida pela Gravidez/metabolismo , Multimerização Proteica/fisiologia , Receptor Tipo 1 de Angiotensina/metabolismo , Receptores Adrenérgicos alfa 1/metabolismo , Animais , Aorta Abdominal/metabolismo , Aorta Abdominal/cirurgia , Pressão Sanguínea/fisiologia , Peso Corporal , Modelos Animais de Doenças , Feminino , Peso Fetal , Hipertensão Induzida pela Gravidez/patologia , Hipertensão Induzida pela Gravidez/fisiopatologia , Hipertensão Induzida pela Gravidez/urina , Músculo Liso/metabolismo , Gravidez , Proteinúria/urina , Ratos , Ratos Wistar
5.
Pharmacology ; 47(5): 330-6, 1993 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-7903464

RESUMO

Administration of the leukotriene synthesis inhibitors nordihydroguaiaretic acid (NDHGA, 30 mg/kg), caffeic acid (20 mg/kg) or nafazatrom (100 mg/kg) and of the phosphodiesterase inhibitor and free radical trapper dipyridamole (10 mg/kg) prevented the alterations in enzyme activity displayed by acute CCl4 administration. The effect was less evident in preventing hepatic glycogen depletion or lipid peroxidation. A synergistic protective effect between dipyridamole and NDHGA or caffeic acid was observed. In conclusion, the present results show that acute hepatic damage induced by CCl4 can be partially prevented by leukotriene synthesis inhibitors and the protection is enhanced with the simultaneous use of phosphodiesterase inhibitors.


Assuntos
Tetracloreto de Carbono/toxicidade , Leucotrienos/biossíntese , Fígado/efeitos dos fármacos , Alanina Transaminase/metabolismo , Fosfatase Alcalina/metabolismo , Animais , Dipiridamol/farmacologia , Fígado/enzimologia , Fígado/patologia , Masculino , Masoprocol/farmacologia , Ratos , Ratos Wistar , gama-Glutamiltransferase/metabolismo
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA