目的 探讨孕妇抗M抗体漏检致新生儿溶血病(hemolytic disease of the newborn,HDN)的原因及策略。方法选取2021年1—12月首都医科大学附属北京友谊医院就诊的孕妇5例。采用全自动血型仪微柱凝集法检测孕妇血型并筛查不规则抗体、采用盐...目的 探讨孕妇抗M抗体漏检致新生儿溶血病(hemolytic disease of the newborn,HDN)的原因及策略。方法选取2021年1—12月首都医科大学附属北京友谊医院就诊的孕妇5例。采用全自动血型仪微柱凝集法检测孕妇血型并筛查不规则抗体、采用盐水试管法检测MN抗原,采用微柱凝集法检测新生儿溶血三项。分析产妇血型、抗体筛查、鉴定补做试验和新生儿溶血试验等结果。结果 5例孕妇产前不规则抗体筛查阴性,复查产妇4℃不规则抗体筛查为阳性,经抗体鉴定为抗M抗体;新生儿溶血三项试验4℃微柱凝集法试验阳性。结论 传统微柱凝集抗人球蛋白法可导致孕妇冷反应抗M抗体漏检。建议孕妇增加盐水法检测不规则抗体,避免冷反应抗M抗体漏检致HDN。展开更多
蛋白质是牛乳中重要的营养成分,然而关于脱脂处理对牛乳蛋白含量的影响尚不清楚。本文采用串联质谱标签(Tandem Mass Tags,TMT)标记定量蛋白组学方法,对全脂牛乳和脱脂牛乳中全蛋白组进行分析,探究脱脂对牛乳蛋白的影响。全脂和脱脂牛...蛋白质是牛乳中重要的营养成分,然而关于脱脂处理对牛乳蛋白含量的影响尚不清楚。本文采用串联质谱标签(Tandem Mass Tags,TMT)标记定量蛋白组学方法,对全脂牛乳和脱脂牛乳中全蛋白组进行分析,探究脱脂对牛乳蛋白的影响。全脂和脱脂牛乳中共鉴定出1352个蛋白,筛选出199个差异表达蛋白。与全脂牛乳相比,脱脂后有67个蛋白上调,132个蛋白下调。牛乳主要活性蛋白中,κ-酪蛋白在脱脂后相对含量降低,而β-乳球蛋白和乳铁蛋白在脱脂后相对含量升高,α-乳白蛋白、αs1-酪蛋白、αs2-酪蛋白、β-酪蛋白、牛血清蛋白及乳过氧化物酶相对含量则无显著性差异。乳脂肪球膜蛋白中嗜乳脂蛋白和乳凝集素在脱脂后相对含量降低。脱脂对牛乳中骨架蛋白、代谢相关蛋白等也有影响,改变了牛乳品质及营养价值。通过对全脂和脱脂牛乳中蛋白质分析,明确了脱脂对牛乳蛋白的影响,可以为婴幼儿乳品开发及消费者购买不同脂肪含量的牛奶提供参考。展开更多
With the increase of economic environment uncertainty,it is of great importance to study the linkage and spillover effects of economic policy uncertainty among countries.Especially,this article selects eight countries...With the increase of economic environment uncertainty,it is of great importance to study the linkage and spillover effects of economic policy uncertainty among countries.Especially,this article selects eight countries along the Belt and Road as the core countries(China,Korea,Croatia,India,Russia,Greece,Pakistan,and Singapore)and four countries(Germany,France,Japan,and UK)as the peripheral countries,and then copula technique and mixed-frequency global vector autoregressive model are employed to analyze the correlation and the spillover effect of the economic policy uncertainty(EPU)for the twelve selected countries,respectively.The proposed empirical findings show clearly that the EPU correlation among the eight core Belt and Road countries is stronger and the spillover effect of the core countries to the peripheral countries is statistically significant.As a result,for harmonious and win-win development,the Belt and Road countries should pay a close attention to the EPU,because the stability of the EPU promotes greatly the economy development.展开更多
文摘目的 探讨孕妇抗M抗体漏检致新生儿溶血病(hemolytic disease of the newborn,HDN)的原因及策略。方法选取2021年1—12月首都医科大学附属北京友谊医院就诊的孕妇5例。采用全自动血型仪微柱凝集法检测孕妇血型并筛查不规则抗体、采用盐水试管法检测MN抗原,采用微柱凝集法检测新生儿溶血三项。分析产妇血型、抗体筛查、鉴定补做试验和新生儿溶血试验等结果。结果 5例孕妇产前不规则抗体筛查阴性,复查产妇4℃不规则抗体筛查为阳性,经抗体鉴定为抗M抗体;新生儿溶血三项试验4℃微柱凝集法试验阳性。结论 传统微柱凝集抗人球蛋白法可导致孕妇冷反应抗M抗体漏检。建议孕妇增加盐水法检测不规则抗体,避免冷反应抗M抗体漏检致HDN。
文摘蛋白质是牛乳中重要的营养成分,然而关于脱脂处理对牛乳蛋白含量的影响尚不清楚。本文采用串联质谱标签(Tandem Mass Tags,TMT)标记定量蛋白组学方法,对全脂牛乳和脱脂牛乳中全蛋白组进行分析,探究脱脂对牛乳蛋白的影响。全脂和脱脂牛乳中共鉴定出1352个蛋白,筛选出199个差异表达蛋白。与全脂牛乳相比,脱脂后有67个蛋白上调,132个蛋白下调。牛乳主要活性蛋白中,κ-酪蛋白在脱脂后相对含量降低,而β-乳球蛋白和乳铁蛋白在脱脂后相对含量升高,α-乳白蛋白、αs1-酪蛋白、αs2-酪蛋白、β-酪蛋白、牛血清蛋白及乳过氧化物酶相对含量则无显著性差异。乳脂肪球膜蛋白中嗜乳脂蛋白和乳凝集素在脱脂后相对含量降低。脱脂对牛乳中骨架蛋白、代谢相关蛋白等也有影响,改变了牛乳品质及营养价值。通过对全脂和脱脂牛乳中蛋白质分析,明确了脱脂对牛乳蛋白的影响,可以为婴幼儿乳品开发及消费者购买不同脂肪含量的牛奶提供参考。
基金supported by the National Natural Science Foundation of China under Grant Nos. 71631004,72033008the Humanity and Social Science Foundation of Ministry of Education of China under Grant No.18YJA790101
文摘With the increase of economic environment uncertainty,it is of great importance to study the linkage and spillover effects of economic policy uncertainty among countries.Especially,this article selects eight countries along the Belt and Road as the core countries(China,Korea,Croatia,India,Russia,Greece,Pakistan,and Singapore)and four countries(Germany,France,Japan,and UK)as the peripheral countries,and then copula technique and mixed-frequency global vector autoregressive model are employed to analyze the correlation and the spillover effect of the economic policy uncertainty(EPU)for the twelve selected countries,respectively.The proposed empirical findings show clearly that the EPU correlation among the eight core Belt and Road countries is stronger and the spillover effect of the core countries to the peripheral countries is statistically significant.As a result,for harmonious and win-win development,the Belt and Road countries should pay a close attention to the EPU,because the stability of the EPU promotes greatly the economy development.
