To elucidate the mechanism of photodynamic damage of cells, the effect of HPD plus light on transcriptlonal ectlvlty In the mucleus Isolate from the normal rat liver was studied in vitor by 3H- UTP incorporation into ...To elucidate the mechanism of photodynamic damage of cells, the effect of HPD plus light on transcriptlonal ectlvlty In the mucleus Isolate from the normal rat liver was studied in vitor by 3H- UTP incorporation into RNA. Measurements of fluorescence spectrum showed that HPD was bound to the nucleus and its fluorescence Intensity Increased with the Increase of HPD concentration. The experimental results Indicated that no changes could be observed when either HPD or light was used alone. Whereas the nuclear transcription activity was found to be inhibited significantly by both HPD and light treatment, and the degree of Inhibition was dependent on the HPD concentration and the time of exposure to light. After treatment by 3 μg/ ml HPD, the inhibition rate of the nuclear transcription activity was 23% ,45% ,69% ,80% and 90%, respectively for light exposure of 2, 5, 10, 20 and 30 minutes. Our results suggested that dose-dependent decreases in the nuclear transcription activity, and marked inhibition of the activity was found in the range from 3 to 7 μg/ml HPD following exposure to light.展开更多
目的探讨血清IL-8、IL-17对Hp阳性胃溃疡患者Hp根除率的影响。方法共174例在我院就诊的的Hp阳性胃溃疡患者,均行胃溃疡常规治疗及抗Hp三联疗法治疗。治疗前、完成3个治疗疗程后,采集患者血液检测血清IL-8、IL-17水平,并对所有患者行治疗...目的探讨血清IL-8、IL-17对Hp阳性胃溃疡患者Hp根除率的影响。方法共174例在我院就诊的的Hp阳性胃溃疡患者,均行胃溃疡常规治疗及抗Hp三联疗法治疗。治疗前、完成3个治疗疗程后,采集患者血液检测血清IL-8、IL-17水平,并对所有患者行治疗后Hp C 13呼气实验。采用Pearson相关性分析,Hp胃溃疡患者Hp根除率与患者治疗前血清IL-8、IL-17水平间的相关性。结果治疗3个疗程后,Hp阳性胃溃疡患者血清IL-8、IL-17水平水平较治疗前明显下降,Hp根除率为70.11%,治疗前观察组血清IL-8、IL-17水平明显低于对照组(P<0.05);不同年龄、不同胃溃疡病程、既往抗Hp治疗史的Hp阳性胃溃疡患者血清IL-8、IL-17水平及Hp根除率比较均有差异(P<0.05);Hp阳性胃溃疡患者治疗前血清IL-8、IL-17水平与Hp根除率呈负相关(r=-0.613、-0.497,P<0.01)。结论Hp阳性胃溃疡患者治疗后Hp根除率与治疗前血清IL-8、IL-17水平呈负相关,提示临床对Hp阳性胃溃疡患者治疗时应关注机体细胞因子IL-8、IL-17水平,并辅以改善相应的治疗措施,以提升Hp根除率。展开更多
In this study, we found, through biochemical synthesis of DNA with the incorporation of ~3HTdR and morphological observation of the tumor cells, that aidiron (912), an extract from earthworm, had a stronger kilting ef...In this study, we found, through biochemical synthesis of DNA with the incorporation of ~3HTdR and morphological observation of the tumor cells, that aidiron (912), an extract from earthworm, had a stronger kilting effect (27%) on mouse ascitic hepatoma tumor cells (H_(22)) in vitro, and that laser-hematoporphyrin derivative (HpD) combined with 912 markedly enhanced the kilting effect (74%) on tumor cells. By means of the fluoresoence spectrophotography we also dis- covered that the killing effect of laser-HpD-912 on tumor calls was closely related with the produc- tion of free radicals and lipid peroxidation.展开更多
文摘To elucidate the mechanism of photodynamic damage of cells, the effect of HPD plus light on transcriptlonal ectlvlty In the mucleus Isolate from the normal rat liver was studied in vitor by 3H- UTP incorporation into RNA. Measurements of fluorescence spectrum showed that HPD was bound to the nucleus and its fluorescence Intensity Increased with the Increase of HPD concentration. The experimental results Indicated that no changes could be observed when either HPD or light was used alone. Whereas the nuclear transcription activity was found to be inhibited significantly by both HPD and light treatment, and the degree of Inhibition was dependent on the HPD concentration and the time of exposure to light. After treatment by 3 μg/ ml HPD, the inhibition rate of the nuclear transcription activity was 23% ,45% ,69% ,80% and 90%, respectively for light exposure of 2, 5, 10, 20 and 30 minutes. Our results suggested that dose-dependent decreases in the nuclear transcription activity, and marked inhibition of the activity was found in the range from 3 to 7 μg/ml HPD following exposure to light.
文摘目的探讨血清IL-8、IL-17对Hp阳性胃溃疡患者Hp根除率的影响。方法共174例在我院就诊的的Hp阳性胃溃疡患者,均行胃溃疡常规治疗及抗Hp三联疗法治疗。治疗前、完成3个治疗疗程后,采集患者血液检测血清IL-8、IL-17水平,并对所有患者行治疗后Hp C 13呼气实验。采用Pearson相关性分析,Hp胃溃疡患者Hp根除率与患者治疗前血清IL-8、IL-17水平间的相关性。结果治疗3个疗程后,Hp阳性胃溃疡患者血清IL-8、IL-17水平水平较治疗前明显下降,Hp根除率为70.11%,治疗前观察组血清IL-8、IL-17水平明显低于对照组(P<0.05);不同年龄、不同胃溃疡病程、既往抗Hp治疗史的Hp阳性胃溃疡患者血清IL-8、IL-17水平及Hp根除率比较均有差异(P<0.05);Hp阳性胃溃疡患者治疗前血清IL-8、IL-17水平与Hp根除率呈负相关(r=-0.613、-0.497,P<0.01)。结论Hp阳性胃溃疡患者治疗后Hp根除率与治疗前血清IL-8、IL-17水平呈负相关,提示临床对Hp阳性胃溃疡患者治疗时应关注机体细胞因子IL-8、IL-17水平,并辅以改善相应的治疗措施,以提升Hp根除率。
文摘In this study, we found, through biochemical synthesis of DNA with the incorporation of ~3HTdR and morphological observation of the tumor cells, that aidiron (912), an extract from earthworm, had a stronger kilting effect (27%) on mouse ascitic hepatoma tumor cells (H_(22)) in vitro, and that laser-hematoporphyrin derivative (HpD) combined with 912 markedly enhanced the kilting effect (74%) on tumor cells. By means of the fluoresoence spectrophotography we also dis- covered that the killing effect of laser-HpD-912 on tumor calls was closely related with the produc- tion of free radicals and lipid peroxidation.