目的研究扶阳祛邪方在脑缺血再灌注损伤患者中的应用效果及增效减毒作用。方法采取随机便利抽样法选取2019年10月—2020年9月医院脑缺血再灌注损伤患者68例为研究对象,按照单双号法将其随机分为观察组和对照组(各34例)。对照组予以常规...目的研究扶阳祛邪方在脑缺血再灌注损伤患者中的应用效果及增效减毒作用。方法采取随机便利抽样法选取2019年10月—2020年9月医院脑缺血再灌注损伤患者68例为研究对象,按照单双号法将其随机分为观察组和对照组(各34例)。对照组予以常规西医治疗方案,观察组在对照组治疗基础上结合扶阳祛邪方,7 d为1个疗程、连续两个疗程。观察和比较治疗前后两组患者中医证候评分、神经功能缺损积分(National Institutes of health neurological deficit score,NIHSS)和B细胞淋巴瘤2(B-cell lymphoma-2,Bcl-2)、Bcl-2相关x蛋白(Bcl-2 associatea x protein,Bax)、半胱氨酸天冬氨酸蛋白酶-3(Cysteinyl aspartate specfic protease,Caspase-3)蛋白表达水平。结果观察组总有效率94.12%(32/34)高于对照组的82.35%(28/34),差异有统计学意义(P<0.05)。治疗后较治疗前,两组患者NIHSS评分和血清Bax、Caspase-3蛋白表达均下降,Bcl-2蛋白表达均升高,且治疗后观察组NIHSS评分和血清Bax、Caspase-3蛋白表达均低于对照组,Bcl-2蛋白表达高于对照组,差异有统计学意义(P<0.05)。结论扶阳祛邪方通过调控脑缺血再灌注损伤患者血清Caspase-3、Bcl-2与Bax蛋白表达水平而具有抗神经细胞凋亡等作用,可使患者收获良好的增效减毒效应,更大程度地保护脑神经功能。展开更多
The Al-9Zn-2.8Mg-2.5Cu-xZr-ySc alloys （x=0, 0.15%, 0.15%; y=0, 0.05%, 0.15%）, produced by low-frequent electromagnetic casting technology, were subjected to homogenization treatment, hot extrusion, solution and agin...The Al-9Zn-2.8Mg-2.5Cu-xZr-ySc alloys （x=0, 0.15%, 0.15%; y=0, 0.05%, 0.15%）, produced by low-frequent electromagnetic casting technology, were subjected to homogenization treatment, hot extrusion, solution and aging treatment. The effects of minor Sc and Zr addition on microstructure, recrystallization and properties of alloys were studied by optical microscopy （OM）, scanning electron microscopy （SEM） and transmission electron microscopy （TEM）. The results show that Sc and Zr addition can refine grains of the as-cast alloy by precipitation of primary Al3（Sc,Zr） particles formed during solidification as heterogeneous nuclei. Secondary Al3（Sc,Zr） precipitates formed during homogenization treatment strongly pin the movement of dislocation and subgrain boundaries, which can effectively inhibit the alloys recrystallization. Compared with the alloy without Sc and Zr addition, the Al-Zn-Mg-Cu-Zr alloy with 0.05%Sc and 0.15%Zr shows the increase in tensile strength and yield strength by 172 MPa and 218 MPa, respectively. Strengthening comes from the contributions of precipitation, substructure and grain refining.展开更多
文摘目的研究扶阳祛邪方在脑缺血再灌注损伤患者中的应用效果及增效减毒作用。方法采取随机便利抽样法选取2019年10月—2020年9月医院脑缺血再灌注损伤患者68例为研究对象,按照单双号法将其随机分为观察组和对照组(各34例)。对照组予以常规西医治疗方案,观察组在对照组治疗基础上结合扶阳祛邪方,7 d为1个疗程、连续两个疗程。观察和比较治疗前后两组患者中医证候评分、神经功能缺损积分(National Institutes of health neurological deficit score,NIHSS)和B细胞淋巴瘤2(B-cell lymphoma-2,Bcl-2)、Bcl-2相关x蛋白(Bcl-2 associatea x protein,Bax)、半胱氨酸天冬氨酸蛋白酶-3(Cysteinyl aspartate specfic protease,Caspase-3)蛋白表达水平。结果观察组总有效率94.12%(32/34)高于对照组的82.35%(28/34),差异有统计学意义(P<0.05)。治疗后较治疗前,两组患者NIHSS评分和血清Bax、Caspase-3蛋白表达均下降,Bcl-2蛋白表达均升高,且治疗后观察组NIHSS评分和血清Bax、Caspase-3蛋白表达均低于对照组,Bcl-2蛋白表达高于对照组,差异有统计学意义(P<0.05)。结论扶阳祛邪方通过调控脑缺血再灌注损伤患者血清Caspase-3、Bcl-2与Bax蛋白表达水平而具有抗神经细胞凋亡等作用,可使患者收获良好的增效减毒效应,更大程度地保护脑神经功能。
基金Project(0211002605132)supported by Institute of Multipurpose Utilization of Mineral Resources,Chinese Academy of Geological Sciences,ChinaProject(0211005303101)supported by the Fundamental Research Funds for the Central Universities,China+1 种基金Project(2010BB4074)supported by Natural Science Foundation Project of CQ CSTC,ChinaProject(2010ZD-02)supported by State Key Laboratory for Advanced Metals and Materials,China
文摘The Al-9Zn-2.8Mg-2.5Cu-xZr-ySc alloys （x=0, 0.15%, 0.15%; y=0, 0.05%, 0.15%）, produced by low-frequent electromagnetic casting technology, were subjected to homogenization treatment, hot extrusion, solution and aging treatment. The effects of minor Sc and Zr addition on microstructure, recrystallization and properties of alloys were studied by optical microscopy （OM）, scanning electron microscopy （SEM） and transmission electron microscopy （TEM）. The results show that Sc and Zr addition can refine grains of the as-cast alloy by precipitation of primary Al3（Sc,Zr） particles formed during solidification as heterogeneous nuclei. Secondary Al3（Sc,Zr） precipitates formed during homogenization treatment strongly pin the movement of dislocation and subgrain boundaries, which can effectively inhibit the alloys recrystallization. Compared with the alloy without Sc and Zr addition, the Al-Zn-Mg-Cu-Zr alloy with 0.05%Sc and 0.15%Zr shows the increase in tensile strength and yield strength by 172 MPa and 218 MPa, respectively. Strengthening comes from the contributions of precipitation, substructure and grain refining.
