AGN and 34 healthy children were investigated in this study to research FRs and PGs roles in the patbyphysiology process with AGN.We measured the plasma levels of TXB2,6-KPGF1a,LPO, SOD,GSH-px,etc.by radioimmunoassay ...AGN and 34 healthy children were investigated in this study to research FRs and PGs roles in the patbyphysiology process with AGN.We measured the plasma levels of TXB2,6-KPGF1a,LPO, SOD,GSH-px,etc.by radioimmunoassay method.The result showed that,in acute phase of AGN,the level of LPO and TXB2 increased(P< 0. 01,P<0.001),but that of GSH-px and 6KPGF1a decreased(both P<0.001 )significantly. Meanwhile, there was a significant positive correlation between LPO and TXB2(r=0. 475,P<0.001 ), and a negative correlation between LPO and 6-KPGF1a(r=-0. 636,P<0. 001).All these indicate that FRs and PGs were all involved in the process of AGN and FRs destroyed renal tissue and physiology function themselves or by PGs generating.展开更多
To investigate the effects of prostaglandins (PGs) and leukotrienes (LTs) on hypoxic pulmonary vasoconstriction (HPV), in vivo rats experiment and in vitro perfused lung experiment were conducted. The effect o...To investigate the effects of prostaglandins (PGs) and leukotrienes (LTs) on hypoxic pulmonary vasoconstriction (HPV), in vivo rats experiment and in vitro perfused lung experiment were conducted. The effect of hypoxia on hemodynamics, concentrations of TXB 2 and 6 keto PGF 1α in serum and lung tissue during hypoxia and effects of PGs and LTs on HPV were observed. The results showed that pulmonary arterial pressure (P pa ) and pulmonary vascular resistance were increased during hypoxia, but cardiac output and systemic arterial pressure were decreased. There were increases of the concentrations of TXB 2 and 6 keto PGF 1α and their ratio in serum and lung tissue during hypoxia. After use of cyclooxygenase inhibitor (indomethacin) in vivo and in vitro , HPV was augmented respectively, but after use of lipoxygenase inhibitor (diethylcorbamazine) or leukotriene receptor blocker (LY 171883), HPV was attenuated. It was suggested that LTs mediated pulmonary vasoconstriction, PGs inhibited pulmonary vasoconstriction and they played a modulating role during hypoxia.展开更多
文摘AGN and 34 healthy children were investigated in this study to research FRs and PGs roles in the patbyphysiology process with AGN.We measured the plasma levels of TXB2,6-KPGF1a,LPO, SOD,GSH-px,etc.by radioimmunoassay method.The result showed that,in acute phase of AGN,the level of LPO and TXB2 increased(P< 0. 01,P<0.001),but that of GSH-px and 6KPGF1a decreased(both P<0.001 )significantly. Meanwhile, there was a significant positive correlation between LPO and TXB2(r=0. 475,P<0.001 ), and a negative correlation between LPO and 6-KPGF1a(r=-0. 636,P<0. 001).All these indicate that FRs and PGs were all involved in the process of AGN and FRs destroyed renal tissue and physiology function themselves or by PGs generating.
文摘To investigate the effects of prostaglandins (PGs) and leukotrienes (LTs) on hypoxic pulmonary vasoconstriction (HPV), in vivo rats experiment and in vitro perfused lung experiment were conducted. The effect of hypoxia on hemodynamics, concentrations of TXB 2 and 6 keto PGF 1α in serum and lung tissue during hypoxia and effects of PGs and LTs on HPV were observed. The results showed that pulmonary arterial pressure (P pa ) and pulmonary vascular resistance were increased during hypoxia, but cardiac output and systemic arterial pressure were decreased. There were increases of the concentrations of TXB 2 and 6 keto PGF 1α and their ratio in serum and lung tissue during hypoxia. After use of cyclooxygenase inhibitor (indomethacin) in vivo and in vitro , HPV was augmented respectively, but after use of lipoxygenase inhibitor (diethylcorbamazine) or leukotriene receptor blocker (LY 171883), HPV was attenuated. It was suggested that LTs mediated pulmonary vasoconstriction, PGs inhibited pulmonary vasoconstriction and they played a modulating role during hypoxia.
