A new series of compounds, 1-aryl-3-（3,4-dihydro-2H-chromen-5-yl） ureas, have been synthesized and their structures were confirmed by FAB-MS and IH NMR. The preliminary pharmacological screening showed that these co...A new series of compounds, 1-aryl-3-（3,4-dihydro-2H-chromen-5-yl） ureas, have been synthesized and their structures were confirmed by FAB-MS and IH NMR. The preliminary pharmacological screening showed that these compounds inhibited TNF-α production in lipopolysaccharide （LPS）-stimulated THP-1 cells.展开更多
Objective： To observe the effects of p38 mitogen activated protein kinase （MAPK） inhibitor SB203580 by intrathecal injection on the pain behavior and the spinal proinflammatory cytokines in a rat model of bone canc...Objective： To observe the effects of p38 mitogen activated protein kinase （MAPK） inhibitor SB203580 by intrathecal injection on the pain behavior and the spinal proinflammatory cytokines in a rat model of bone cancer pain induced by breast cancer cells. Methods： Eleven rats were used to establish the models of bone cancer pain, six rats were treated by intrathecal SB203580 injection, and the other 5 were as the controls. The paw withdrawal latency （PWL）, histology and the spinal levels of IL-1β and TNF-α were detected. Results： All the 11 rats presented evident bone destruction and thermal hyperalgesia after intra-tibial injection of breast cancer cells. No effect of SB203580 on the bone destruction was observed. However, following intrathecal injection of SB203580, the left PWLs （12.12± 1.26 s at 16 days and 12.99 ± 1.65 s at 19 days） were significant higher than that of controls （9.05 ± 1.08 s at 16 days and 8.55 ± 1.60 s at 19 days）, P 〈 0.05. Meanwhile, inkathecal injection of SB203580 evidently reduced the levels of spinal IL-1β and TNF-α. Conclusion： Intrathecal injection of SB203580 in a rat model of bone cancer pain cannot prevent the tibial destruction but significantly depress the thermalgia sensitivity, which might result from inhibiting inkacellular p38 MAPK signaling transduction, and thereby reducing the release of the proinflammatory cytokines.展开更多
目的:探讨p38MAPK抑制剂SB239063对香烟烟雾暴露变应性鼻炎大鼠p38MAPK信号通路、TNF-α、MKP-1表达的影响。方法:先构建变应性鼻炎(AR)大鼠模型,然后给予AR大鼠被动吸入香烟烟雾(CS),再行腹腔注射AR大鼠SB239063(100mg/kg),分为AR组、A...目的:探讨p38MAPK抑制剂SB239063对香烟烟雾暴露变应性鼻炎大鼠p38MAPK信号通路、TNF-α、MKP-1表达的影响。方法:先构建变应性鼻炎(AR)大鼠模型,然后给予AR大鼠被动吸入香烟烟雾(CS),再行腹腔注射AR大鼠SB239063(100mg/kg),分为AR组、AR+CS组、AR+CS+SB239063组。造模后对各组大鼠进行症状学评分;苏木精-伊红(HE)染色法观察大鼠鼻黏膜的形态学变化;实时荧光定量PCR(RT-PCR)检测鼻黏膜p38MAPK、MKP-1 m RNA的表达水平;酶联免疫吸附试验(ELISA)分析外周血、脾脏TNF-α的含量;Western blots检测鼻黏膜p38MAPK、p-p38MAPK、MKP-1蛋白的表达水平。结果:与AR组比较,AR+CS组大鼠的过敏症状(P<0.05)加重;鼻黏膜嗜酸性粒细胞(P<0.05)、中性粒细胞浸润(P<0.01)增多;MKP-1m RNA及其蛋白的表达水平均升高(P<0.001);外周血、脾脏TNF-α的表达水平升高(P<0.001);p-p38MAPK蛋白的表达水平升高(P<0.001)。与AR+CS组比较,AR+CS+SB239063组大鼠过敏症状评分下降(P<0.01);鼻黏膜中嗜酸性粒细胞、中性粒细胞计数下降(P值均<0.05);p38MAPK m RNA的表达水平降低(P<0.05),MKP-1 m RNA及其蛋白的表达水平下降(P<0.001);外周血、脾脏TNF-α的表达水平降低(P值均<0.001);p38MAPK、p-p38MAPK蛋白的表达水平降低,差异均具有显著统计学意义(P值均<0.001)。结论:SB239063通过抑制TNF-α、p38MAPK及其自磷酸化,减轻香烟烟雾暴露变应性鼻炎大鼠MKP-1的表达。展开更多
文摘A new series of compounds, 1-aryl-3-（3,4-dihydro-2H-chromen-5-yl） ureas, have been synthesized and their structures were confirmed by FAB-MS and IH NMR. The preliminary pharmacological screening showed that these compounds inhibited TNF-α production in lipopolysaccharide （LPS）-stimulated THP-1 cells.
基金a grant from the National Nature Sciences Foundation of China (No. 30672426).
文摘Objective： To observe the effects of p38 mitogen activated protein kinase （MAPK） inhibitor SB203580 by intrathecal injection on the pain behavior and the spinal proinflammatory cytokines in a rat model of bone cancer pain induced by breast cancer cells. Methods： Eleven rats were used to establish the models of bone cancer pain, six rats were treated by intrathecal SB203580 injection, and the other 5 were as the controls. The paw withdrawal latency （PWL）, histology and the spinal levels of IL-1β and TNF-α were detected. Results： All the 11 rats presented evident bone destruction and thermal hyperalgesia after intra-tibial injection of breast cancer cells. No effect of SB203580 on the bone destruction was observed. However, following intrathecal injection of SB203580, the left PWLs （12.12± 1.26 s at 16 days and 12.99 ± 1.65 s at 19 days） were significant higher than that of controls （9.05 ± 1.08 s at 16 days and 8.55 ± 1.60 s at 19 days）, P 〈 0.05. Meanwhile, inkathecal injection of SB203580 evidently reduced the levels of spinal IL-1β and TNF-α. Conclusion： Intrathecal injection of SB203580 in a rat model of bone cancer pain cannot prevent the tibial destruction but significantly depress the thermalgia sensitivity, which might result from inhibiting inkacellular p38 MAPK signaling transduction, and thereby reducing the release of the proinflammatory cytokines.
文摘目的:探讨p38MAPK抑制剂SB239063对香烟烟雾暴露变应性鼻炎大鼠p38MAPK信号通路、TNF-α、MKP-1表达的影响。方法:先构建变应性鼻炎(AR)大鼠模型,然后给予AR大鼠被动吸入香烟烟雾(CS),再行腹腔注射AR大鼠SB239063(100mg/kg),分为AR组、AR+CS组、AR+CS+SB239063组。造模后对各组大鼠进行症状学评分;苏木精-伊红(HE)染色法观察大鼠鼻黏膜的形态学变化;实时荧光定量PCR(RT-PCR)检测鼻黏膜p38MAPK、MKP-1 m RNA的表达水平;酶联免疫吸附试验(ELISA)分析外周血、脾脏TNF-α的含量;Western blots检测鼻黏膜p38MAPK、p-p38MAPK、MKP-1蛋白的表达水平。结果:与AR组比较,AR+CS组大鼠的过敏症状(P<0.05)加重;鼻黏膜嗜酸性粒细胞(P<0.05)、中性粒细胞浸润(P<0.01)增多;MKP-1m RNA及其蛋白的表达水平均升高(P<0.001);外周血、脾脏TNF-α的表达水平升高(P<0.001);p-p38MAPK蛋白的表达水平升高(P<0.001)。与AR+CS组比较,AR+CS+SB239063组大鼠过敏症状评分下降(P<0.01);鼻黏膜中嗜酸性粒细胞、中性粒细胞计数下降(P值均<0.05);p38MAPK m RNA的表达水平降低(P<0.05),MKP-1 m RNA及其蛋白的表达水平下降(P<0.001);外周血、脾脏TNF-α的表达水平降低(P值均<0.001);p38MAPK、p-p38MAPK蛋白的表达水平降低,差异均具有显著统计学意义(P值均<0.001)。结论:SB239063通过抑制TNF-α、p38MAPK及其自磷酸化,减轻香烟烟雾暴露变应性鼻炎大鼠MKP-1的表达。
