A series of arylsulfonamide and arylamide derivatives have been prepared from anisole in good yields. The structures of those compounds were confirmed by 1H-NMR and MS analysis. Their activities against platelet aggre...A series of arylsulfonamide and arylamide derivatives have been prepared from anisole in good yields. The structures of those compounds were confirmed by 1H-NMR and MS analysis. Their activities against platelet aggregation were tested in vitro by using the Born test on rabbits.展开更多
A series of novel ligustrazine derivatives were synthesized. These compounds have not been reported in literature, and their chemical structures were confirmed by IR, ^1H NMR and ESI-MS. The preliminary antiplatelet a...A series of novel ligustrazine derivatives were synthesized. These compounds have not been reported in literature, and their chemical structures were confirmed by IR, ^1H NMR and ESI-MS. The preliminary antiplatelet aggregation screening results demonstrated that the compounds 7a, 7b and 7c showed higher potency than ligustrazine.展开更多
A convenient approach for the preparation of sarpogrelate hydrochloride was developed.Two series of sarpogrelate hydrochloride analogues were designed and synthesized in order to improve their platelet aggregation inh...A convenient approach for the preparation of sarpogrelate hydrochloride was developed.Two series of sarpogrelate hydrochloride analogues were designed and synthesized in order to improve their platelet aggregation inhibitory activities, biological tests suggested that these compounds have platelet aggregation inhibitory activities to some extent.展开更多
The regulatory effects of phospholipase A2(PLA2) inhibitors, chloroquine and dexamethasone, on the activity of blood PLA2 and its related lipid mediators during endotoxic shock were observed in rabbits. The rabbits we...The regulatory effects of phospholipase A2(PLA2) inhibitors, chloroquine and dexamethasone, on the activity of blood PLA2 and its related lipid mediators during endotoxic shock were observed in rabbits. The rabbits were randomized into 4 groups as follows : The normal control (NC) group consisted of 12 rabbits with sham injection . the endotoxic shork (ES) group of 31 rabbits, the chloquine pretreated (CQ) group of 16 rabbits receiving 3 mg/kg of chlorqouine and the dexamethasone-pretreated (DM) group of 10 rabbits receiving 5 mg/kg of dexamethasone. Blood was sampled before and 5 and 30 min, 1 ,3, 5 and 8 h after the administration of endotoxin for the determination of PLA2, platelet activating factor (PAF) , TXB2 and 6-keto-PGF1α. In addrtion, changes of mean arterial pressure (MAP) and respiratory rate (RR) were also carefully recorded. It was found that the activities of PLA2 and PAF and the levels of TXB2 and 6-keto-PGF1α. were significantly increased after the infusion of endotoxin. CQ and DM markedly suppressed the activities of PLA2 and PAF. The inhibition of CQ on TXB2 and 6-keto-PGF1α was greater than that of DM. Besides, CQ and DM could increase the survival rate of the animals from 48% to 75% (CQ group) and 70% (DM group). These findings suggest that PLA2 inhibitors such as CQ and DM can significantly attenuate the formation of shock mediators such as PLA2, PAF, TXB2 and 6-keto-PGF1α, and so improve the prognosis of the victims of endotoxic shock.展开更多
Thrombosis formation on disrupted atherosclerotic plaque is the most common acuse of cardiovascular diseases, in the pathophysiology, increased platelet reactivity is a descriptor of the risk of cardiovascular events ...Thrombosis formation on disrupted atherosclerotic plaque is the most common acuse of cardiovascular diseases, in the pathophysiology, increased platelet reactivity is a descriptor of the risk of cardiovascular events in healthy persons and in patients with overt coronary artery disease. Regardless of the stimulus for activation platelet-platelet interation and thrombus formation is ultimately regulated through the GP Ⅱ b/Ⅲ a receptor展开更多
目的:探讨血小板与白细胞比值(platelet and white blood cells ratio, PWR)、血小板与淋巴细胞比值(platelet and lymphocyte ratio, PLR)、中性粒细胞与淋巴细胞比值(neutrophil to lymphocyte ratio, NLR)以及尿白细胞计数(urinary l...目的:探讨血小板与白细胞比值(platelet and white blood cells ratio, PWR)、血小板与淋巴细胞比值(platelet and lymphocyte ratio, PLR)、中性粒细胞与淋巴细胞比值(neutrophil to lymphocyte ratio, NLR)以及尿白细胞计数(urinary leucocyte count, ULEU)与接受PD-1抑制剂治疗晚期尿路上皮癌(urothelial carcinoma, UC)患者预后的关系。方法:收集78例接受PD-1抑制剂治疗晚期UC患者的临床资料,利用Kaplan-Meier法计算生存率和Log-rank检验比较不同组间的生存差异,同时采用COX回归分析预后影响因素。结果:低PLR组与高PLR组的1年生存率分别为71.98%和47.63%,差异有统计学意义(P<0.05);低NLR组与高NLR组的1年生存率分别为71.36%和48.15%,差异有统计学意义(P<0.05);PWR高低两组和ULEU状态预测UC患者生存率无显著性差异(P>0.05)。单因素回归分析结果显示,N分期、M分期、TNM分期、远处转移个数、PLR、NLR是影响晚期UC患者生存情况的危险因素(P<0.05)。多因素回归分析显示,PLR是影响接受PD-1抑制剂治疗的UC患者预后的独立因素。结论:PLR、NLR为影响接受PD-1抑制剂治疗晚期UC患者预后的独立因素,PLR高值组和NLR高值组患者的预后较PLR低值组和NLR低值组的患者差。展开更多
基金KZ acknowledges supports from the National Young Scholar Award of the NSFC(#30125043)from the Chung Kong Scholars Program administered by the Ministry of Education,PRC and the Li Ka Shing Foundation,Hong Kong.
文摘A series of arylsulfonamide and arylamide derivatives have been prepared from anisole in good yields. The structures of those compounds were confirmed by 1H-NMR and MS analysis. Their activities against platelet aggregation were tested in vitro by using the Born test on rabbits.
基金This project was supported by Shandong Natural Science Foundation （Y2003C11）Shandong Science ＆ Technology Bureau Foundation and Jinan Excellent Young Scientist Program.
文摘A series of novel ligustrazine derivatives were synthesized. These compounds have not been reported in literature, and their chemical structures were confirmed by IR, ^1H NMR and ESI-MS. The preliminary antiplatelet aggregation screening results demonstrated that the compounds 7a, 7b and 7c showed higher potency than ligustrazine.
文摘A convenient approach for the preparation of sarpogrelate hydrochloride was developed.Two series of sarpogrelate hydrochloride analogues were designed and synthesized in order to improve their platelet aggregation inhibitory activities, biological tests suggested that these compounds have platelet aggregation inhibitory activities to some extent.
文摘The regulatory effects of phospholipase A2(PLA2) inhibitors, chloroquine and dexamethasone, on the activity of blood PLA2 and its related lipid mediators during endotoxic shock were observed in rabbits. The rabbits were randomized into 4 groups as follows : The normal control (NC) group consisted of 12 rabbits with sham injection . the endotoxic shork (ES) group of 31 rabbits, the chloquine pretreated (CQ) group of 16 rabbits receiving 3 mg/kg of chlorqouine and the dexamethasone-pretreated (DM) group of 10 rabbits receiving 5 mg/kg of dexamethasone. Blood was sampled before and 5 and 30 min, 1 ,3, 5 and 8 h after the administration of endotoxin for the determination of PLA2, platelet activating factor (PAF) , TXB2 and 6-keto-PGF1α. In addrtion, changes of mean arterial pressure (MAP) and respiratory rate (RR) were also carefully recorded. It was found that the activities of PLA2 and PAF and the levels of TXB2 and 6-keto-PGF1α. were significantly increased after the infusion of endotoxin. CQ and DM markedly suppressed the activities of PLA2 and PAF. The inhibition of CQ on TXB2 and 6-keto-PGF1α was greater than that of DM. Besides, CQ and DM could increase the survival rate of the animals from 48% to 75% (CQ group) and 70% (DM group). These findings suggest that PLA2 inhibitors such as CQ and DM can significantly attenuate the formation of shock mediators such as PLA2, PAF, TXB2 and 6-keto-PGF1α, and so improve the prognosis of the victims of endotoxic shock.
文摘Thrombosis formation on disrupted atherosclerotic plaque is the most common acuse of cardiovascular diseases, in the pathophysiology, increased platelet reactivity is a descriptor of the risk of cardiovascular events in healthy persons and in patients with overt coronary artery disease. Regardless of the stimulus for activation platelet-platelet interation and thrombus formation is ultimately regulated through the GP Ⅱ b/Ⅲ a receptor
文摘目的:探讨血小板与白细胞比值(platelet and white blood cells ratio, PWR)、血小板与淋巴细胞比值(platelet and lymphocyte ratio, PLR)、中性粒细胞与淋巴细胞比值(neutrophil to lymphocyte ratio, NLR)以及尿白细胞计数(urinary leucocyte count, ULEU)与接受PD-1抑制剂治疗晚期尿路上皮癌(urothelial carcinoma, UC)患者预后的关系。方法:收集78例接受PD-1抑制剂治疗晚期UC患者的临床资料,利用Kaplan-Meier法计算生存率和Log-rank检验比较不同组间的生存差异,同时采用COX回归分析预后影响因素。结果:低PLR组与高PLR组的1年生存率分别为71.98%和47.63%,差异有统计学意义(P<0.05);低NLR组与高NLR组的1年生存率分别为71.36%和48.15%,差异有统计学意义(P<0.05);PWR高低两组和ULEU状态预测UC患者生存率无显著性差异(P>0.05)。单因素回归分析结果显示,N分期、M分期、TNM分期、远处转移个数、PLR、NLR是影响晚期UC患者生存情况的危险因素(P<0.05)。多因素回归分析显示,PLR是影响接受PD-1抑制剂治疗的UC患者预后的独立因素。结论:PLR、NLR为影响接受PD-1抑制剂治疗晚期UC患者预后的独立因素,PLR高值组和NLR高值组患者的预后较PLR低值组和NLR低值组的患者差。
