A new constant C(X)for any Banach space X is introduced.It is proved that C(X)<2 implies the weak Banach–Saks property for the space X:In particular,C(cesp)is found for Cesàro sequence space cesp(1<p<∞...A new constant C(X)for any Banach space X is introduced.It is proved that C(X)<2 implies the weak Banach–Saks property for the space X:In particular,C(cesp)is found for Cesàro sequence space cesp(1<p<∞).Moreover,it is shown that the space cesp(1<p<∞)has property(β).展开更多
文摘目的通过动物实验和体外细胞实验探讨SAK-HV蛋白降胆固醇的机制。方法以0.5mg/kg浓度的SAK-HV蛋白治疗高脂喂养的Apo E-/-C57小鼠,酶法检测Apo E-/-C57小鼠血脂水平,定量PCR法(real-time quantitative PCR,q PCR)和蛋白质印迹(Western blot)法检测小肠ABCG5和ABCG8 m RNA和蛋白的表达水平。100μg/ml的SAK-HV蛋白作用caco-2细胞不同时间后,NBD胆固醇作为荧光探针检测SAK-HV蛋白对caco-2细胞胆固醇吸收的影响,q-PCR和Western blot法检测SAK-HV蛋白对caco-2细胞ABCG5和ABCG8 m RNA和蛋白表达水平的影响。结果 SAK-HV蛋白可以降低高脂喂养的Apo E-/-C57小鼠的血清胆固醇水平,同时上调小肠ABCG5和ABCG8 m RNA和蛋白的表达水平。体外实验表明,SAK-HV蛋白可以抑制caco-2细胞胆固醇的吸收,同时上调ABCG5和ABCG8 m RNA和蛋白的表达水平。结论 SAK-HV蛋白通过上调ABCG5和ABCG8的表达抑制小肠胆固醇的吸收从而降低血清胆固醇水平。
文摘A new constant C(X)for any Banach space X is introduced.It is proved that C(X)<2 implies the weak Banach–Saks property for the space X:In particular,C(cesp)is found for Cesàro sequence space cesp(1<p<∞).Moreover,it is shown that the space cesp(1<p<∞)has property(β).
