目的了解新鲜冰冻血浆、普通冰冻血浆与去冷沉淀血浆中部分有效成分的实际含量,为临床选择不同血浆输注提供实验室依据。方法采集23袋(200 m l袋/)ACD-B血液保存液保存的血液,4 h内分离制备新鲜冰冻血浆,各袋均留2份标本;1份同新鲜冰冻...目的了解新鲜冰冻血浆、普通冰冻血浆与去冷沉淀血浆中部分有效成分的实际含量,为临床选择不同血浆输注提供实验室依据。方法采集23袋(200 m l袋/)ACD-B血液保存液保存的血液,4 h内分离制备新鲜冰冻血浆,各袋均留2份标本;1份同新鲜冰冻一起置-35℃保存,于第3天速融后检测总蛋白、白蛋白、纤维蛋白原、凝血因子Ⅴ、Ⅷ、Ⅹ含量;1份置4℃保存21 d后检测总蛋白、白蛋白、纤维蛋白原、凝血因子Ⅴ、Ⅷ、Ⅹ含量;新鲜冰冻血浆于第3天取出制备冷沉淀,留取去冷沉淀血浆标本1份检测总蛋白、白蛋白、纤维蛋白原、凝血因子Ⅴ、Ⅷ、Ⅹ含量。结果去冷沉淀血浆中的血浆蛋白和凝血因子含量均低于普通冰冻血浆与新鲜冰冻血浆(P<0.001),普通冰冻血浆与新鲜冰冻血浆中的血浆蛋白无差别(P>0.001),普通冰冻血浆中的凝血因子含量低于新鲜冰冻血浆(P<0.001)。结论新鲜冰冻血浆、普通冰冻血浆与去冷沉淀血浆有效成分各不相同,在临床上不能等同使用。展开更多
目的探讨亚甲蓝光化学法(methylene blue photochemistry,MB-P)病毒灭活前后血浆有效成分及残留白细胞含量的变化,为临床应用病毒灭活血浆进行治疗提供剂量使用依据。方法对152份全血分离制备的血浆进行MB-P病毒灭活,灭活前后留样,制成...目的探讨亚甲蓝光化学法(methylene blue photochemistry,MB-P)病毒灭活前后血浆有效成分及残留白细胞含量的变化,为临床应用病毒灭活血浆进行治疗提供剂量使用依据。方法对152份全血分离制备的血浆进行MB-P病毒灭活,灭活前后留样,制成新鲜冰冻血浆后融化,测定纤维蛋白原、因子、总蛋白及残留白细胞的含量,同时计算有效成分回收率。结果经MB-P病毒灭活后新鲜冰冻血浆中因子和纤维蛋白原含量明显降低,差异有统计学意义;但总蛋白含量无明显变化,因子回收率达到80.8%,纤维蛋白原回收率为74.9%;残留白细胞计数由(3.0±2.1)×106/L下降到(7.4±1.4)×104/L(n=30),差异有统计学意义(P<0.05)。结论MB-P病毒灭活血浆可以提高血浆输注安全性。建议临床应用MB-P病毒灭活血浆应在原使用剂量基础上增加25%的用量,以保证临床治疗效果。展开更多
The most fundamental property of biomarkers is change.But changes are hard to maintain in plasma since it is strictly controlled by homeostatic mechanisms of the body.There is no homeostatic mechanism for urine.Beside...The most fundamental property of biomarkers is change.But changes are hard to maintain in plasma since it is strictly controlled by homeostatic mechanisms of the body.There is no homeostatic mechanism for urine.Besides,urine is partly a filtration of blood,and systematic information can be reflected in urine.We hypothesize that change of blood can be reflected in urine more sensitively.Here we introduce the interference into the blood by two anticoagulants heparin or argatroban.Plasma and urine proteins were profiled by LC-MS/MS and then validated by Western blot in totally six SD female rats before and after the drug treatments.In argatroban treated group,with exactly the same experimental procedure and the same cutoff value for both plasma and urine proteins,62 proteins changed in urine,only one of which changed in plasma.In heparin treated group,27 proteins changed in urine but only three other proteins changed in plasma.Both LC-MS/MS and Western blot analyses demonstrated drug-induced increases in transferrin and hemopexin levels in urine but not in plasma.Our data indicates that urine may serve as a source for more sensitive detection of protein biomarkers than plasma.展开更多
文摘目的了解新鲜冰冻血浆、普通冰冻血浆与去冷沉淀血浆中部分有效成分的实际含量,为临床选择不同血浆输注提供实验室依据。方法采集23袋(200 m l袋/)ACD-B血液保存液保存的血液,4 h内分离制备新鲜冰冻血浆,各袋均留2份标本;1份同新鲜冰冻一起置-35℃保存,于第3天速融后检测总蛋白、白蛋白、纤维蛋白原、凝血因子Ⅴ、Ⅷ、Ⅹ含量;1份置4℃保存21 d后检测总蛋白、白蛋白、纤维蛋白原、凝血因子Ⅴ、Ⅷ、Ⅹ含量;新鲜冰冻血浆于第3天取出制备冷沉淀,留取去冷沉淀血浆标本1份检测总蛋白、白蛋白、纤维蛋白原、凝血因子Ⅴ、Ⅷ、Ⅹ含量。结果去冷沉淀血浆中的血浆蛋白和凝血因子含量均低于普通冰冻血浆与新鲜冰冻血浆(P<0.001),普通冰冻血浆与新鲜冰冻血浆中的血浆蛋白无差别(P>0.001),普通冰冻血浆中的凝血因子含量低于新鲜冰冻血浆(P<0.001)。结论新鲜冰冻血浆、普通冰冻血浆与去冷沉淀血浆有效成分各不相同,在临床上不能等同使用。
文摘目的探讨亚甲蓝光化学法(methylene blue photochemistry,MB-P)病毒灭活前后血浆有效成分及残留白细胞含量的变化,为临床应用病毒灭活血浆进行治疗提供剂量使用依据。方法对152份全血分离制备的血浆进行MB-P病毒灭活,灭活前后留样,制成新鲜冰冻血浆后融化,测定纤维蛋白原、因子、总蛋白及残留白细胞的含量,同时计算有效成分回收率。结果经MB-P病毒灭活后新鲜冰冻血浆中因子和纤维蛋白原含量明显降低,差异有统计学意义;但总蛋白含量无明显变化,因子回收率达到80.8%,纤维蛋白原回收率为74.9%;残留白细胞计数由(3.0±2.1)×106/L下降到(7.4±1.4)×104/L(n=30),差异有统计学意义(P<0.05)。结论MB-P病毒灭活血浆可以提高血浆输注安全性。建议临床应用MB-P病毒灭活血浆应在原使用剂量基础上增加25%的用量,以保证临床治疗效果。
基金supported by the National Basic Research Program of China (2012CB517606,2013CB530805)Expertise-Introduction Project for Disciplinary Innovation of Universities (B08007)+1 种基金National Natural Science Foundation of China (31200614)Beijing Natural Science Foundation (5132028)
文摘The most fundamental property of biomarkers is change.But changes are hard to maintain in plasma since it is strictly controlled by homeostatic mechanisms of the body.There is no homeostatic mechanism for urine.Besides,urine is partly a filtration of blood,and systematic information can be reflected in urine.We hypothesize that change of blood can be reflected in urine more sensitively.Here we introduce the interference into the blood by two anticoagulants heparin or argatroban.Plasma and urine proteins were profiled by LC-MS/MS and then validated by Western blot in totally six SD female rats before and after the drug treatments.In argatroban treated group,with exactly the same experimental procedure and the same cutoff value for both plasma and urine proteins,62 proteins changed in urine,only one of which changed in plasma.In heparin treated group,27 proteins changed in urine but only three other proteins changed in plasma.Both LC-MS/MS and Western blot analyses demonstrated drug-induced increases in transferrin and hemopexin levels in urine but not in plasma.Our data indicates that urine may serve as a source for more sensitive detection of protein biomarkers than plasma.
