A nonionic waterborne polyurethane(WPU) was synthesized by the self-emulsification method using polyether diol(N220),isophorone diisocyanate(IPDI),trimethylolpropane poly(ethylene glycol monomethyl ether)(N120),1,4-bu...A nonionic waterborne polyurethane(WPU) was synthesized by the self-emulsification method using polyether diol(N220),isophorone diisocyanate(IPDI),trimethylolpropane poly(ethylene glycol monomethyl ether)(N120),1,4-butanediol(BDO) and trimethylolpropane(TMP) as the main materials.The effects of the NCO/OH ratio on the emulsion and film properties of NWPU were explored.The experimental results show that the NWPU prepared at an NCO/OH ratio of 1.1 has good emulsion stability and easy film formation,and the resultant film was elastic,soft,and transparent.The sample was used for wool finishing and the application performance was evaluated.When the NWPU dosage reached 40 g·L^(-1),the fabric area felt shrinkage rate reduced from 8.97% to 4.75%,the pilling rating raised from grade 2-3 to grade 4,and the whiteness value only decreased by 3.87%.展开更多
目的 探讨脂肪因子代谢对冠状动脉微血管功能障碍(MVD)的影响及麝香通心滴丸(STDP)的临床应用价值。方法 纳入2018年9月至2019年12月上海交通大学医学院附属新华医院心内科收治的41例冠心病患者,分为非MVD组(20例)和MVD组(21例);29例MV...目的 探讨脂肪因子代谢对冠状动脉微血管功能障碍(MVD)的影响及麝香通心滴丸(STDP)的临床应用价值。方法 纳入2018年9月至2019年12月上海交通大学医学院附属新华医院心内科收治的41例冠心病患者,分为非MVD组(20例)和MVD组(21例);29例MVD患者随机分为基础治疗组(14例)和STDP组(15例),分别进行为期3个月的基础治疗和基础治疗加STDP治疗;分析各组患者主诉、血生物化学指标、血浆炎症因子及脂肪因子水平的变化。采用12~14周龄雄性C57BL/6小鼠制备心肌缺血再灌注(IR)模型,分为假手术组、IR组(生理盐水灌胃)和IR+STDP组(STDP灌胃),每组5只,采用ELISA测定血浆炎症因子水平,通过硫黄素-S荧光密度法测定心脏组织微血管阻塞情况,采用蛋白质组学分析探寻IR组与IR+STDP组间差异表达蛋白质并通过蛋白质印迹法进行验证。结果 与非MVD组比较,MVD组血浆瘦素水平增高[(9.89±2.42)μg/L vs (4.76±1.02)μg/L,P<0.01],脂联素水平下降[(5.02±1.30)pg/mL vs (7.19±1.76)pg/mL,P<0.05],抵抗素水平升高[(9.20±2.03)μg/L vs (5.70±1.32)μg/L,P<0.05]。Pearson相关分析显示血浆瘦素水平与微循环阻力呈正相关(r=0.82,P<0.01)。ROC曲线分析结果显示,根据血浆瘦素水平判断MVD的AUC值为0.855,最佳临界值为>9.395 μg/L,灵敏度为0.714,特异度为0.867。MVD患者治疗3个月后,相较于基础治疗组,STDP组主诉胸闷、胸痛症状改善率较高[73.3%(11/15) vs 21.4% (3/14)],血浆瘦素、IL-6、TNF-α水平均降低[(11.36±0.54)μg/L vs (12.12±0.85)μg/L、(3.96±1.76)pg/mL vs (8.65±1.29)pg/mL、(24.82±3.07)ng/mL vs (32.45±3.32)ng/mL,均P<0.05]。在动物实验中,与IR组相比,IR+STDP组小鼠IR术后无回流面积减少45%(P<0.01)、低回流及无回流面积减少23%(P<0.05),血浆IL-6、TNF-α水平均下降[(378.25±19.66)pg/mL vs (457.32±32.01)pg/mL、(289.71±47.62)pg/mL vs (371.28±41.05)pg/mL,均P<0.05]。蛋白质组学分析结果显示,IR+STDP组小鼠心脏组织中血管性血友病因子(vWF)、细胞间黏附分子-1(ICAM-1)蛋白质表达水平低于IR组,蛋白质印迹法验证结果亦提示IR+STDP组vWF及ICAM-1蛋白质表达较IR组下调(均P<0.01)。结论 MVD患者存在脂肪因子代谢异常,血浆瘦素水平较高。STDP治疗可改善MVD患者的临床症状,降低血浆瘦素水平和炎症指标,机制可能与其抗血小板、抗炎作用有关。展开更多
文摘A nonionic waterborne polyurethane(WPU) was synthesized by the self-emulsification method using polyether diol(N220),isophorone diisocyanate(IPDI),trimethylolpropane poly(ethylene glycol monomethyl ether)(N120),1,4-butanediol(BDO) and trimethylolpropane(TMP) as the main materials.The effects of the NCO/OH ratio on the emulsion and film properties of NWPU were explored.The experimental results show that the NWPU prepared at an NCO/OH ratio of 1.1 has good emulsion stability and easy film formation,and the resultant film was elastic,soft,and transparent.The sample was used for wool finishing and the application performance was evaluated.When the NWPU dosage reached 40 g·L^(-1),the fabric area felt shrinkage rate reduced from 8.97% to 4.75%,the pilling rating raised from grade 2-3 to grade 4,and the whiteness value only decreased by 3.87%.
文摘目的 探讨脂肪因子代谢对冠状动脉微血管功能障碍(MVD)的影响及麝香通心滴丸(STDP)的临床应用价值。方法 纳入2018年9月至2019年12月上海交通大学医学院附属新华医院心内科收治的41例冠心病患者,分为非MVD组(20例)和MVD组(21例);29例MVD患者随机分为基础治疗组(14例)和STDP组(15例),分别进行为期3个月的基础治疗和基础治疗加STDP治疗;分析各组患者主诉、血生物化学指标、血浆炎症因子及脂肪因子水平的变化。采用12~14周龄雄性C57BL/6小鼠制备心肌缺血再灌注(IR)模型,分为假手术组、IR组(生理盐水灌胃)和IR+STDP组(STDP灌胃),每组5只,采用ELISA测定血浆炎症因子水平,通过硫黄素-S荧光密度法测定心脏组织微血管阻塞情况,采用蛋白质组学分析探寻IR组与IR+STDP组间差异表达蛋白质并通过蛋白质印迹法进行验证。结果 与非MVD组比较,MVD组血浆瘦素水平增高[(9.89±2.42)μg/L vs (4.76±1.02)μg/L,P<0.01],脂联素水平下降[(5.02±1.30)pg/mL vs (7.19±1.76)pg/mL,P<0.05],抵抗素水平升高[(9.20±2.03)μg/L vs (5.70±1.32)μg/L,P<0.05]。Pearson相关分析显示血浆瘦素水平与微循环阻力呈正相关(r=0.82,P<0.01)。ROC曲线分析结果显示,根据血浆瘦素水平判断MVD的AUC值为0.855,最佳临界值为>9.395 μg/L,灵敏度为0.714,特异度为0.867。MVD患者治疗3个月后,相较于基础治疗组,STDP组主诉胸闷、胸痛症状改善率较高[73.3%(11/15) vs 21.4% (3/14)],血浆瘦素、IL-6、TNF-α水平均降低[(11.36±0.54)μg/L vs (12.12±0.85)μg/L、(3.96±1.76)pg/mL vs (8.65±1.29)pg/mL、(24.82±3.07)ng/mL vs (32.45±3.32)ng/mL,均P<0.05]。在动物实验中,与IR组相比,IR+STDP组小鼠IR术后无回流面积减少45%(P<0.01)、低回流及无回流面积减少23%(P<0.05),血浆IL-6、TNF-α水平均下降[(378.25±19.66)pg/mL vs (457.32±32.01)pg/mL、(289.71±47.62)pg/mL vs (371.28±41.05)pg/mL,均P<0.05]。蛋白质组学分析结果显示,IR+STDP组小鼠心脏组织中血管性血友病因子(vWF)、细胞间黏附分子-1(ICAM-1)蛋白质表达水平低于IR组,蛋白质印迹法验证结果亦提示IR+STDP组vWF及ICAM-1蛋白质表达较IR组下调(均P<0.01)。结论 MVD患者存在脂肪因子代谢异常,血浆瘦素水平较高。STDP治疗可改善MVD患者的临床症状,降低血浆瘦素水平和炎症指标,机制可能与其抗血小板、抗炎作用有关。
