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机构地区:[1]上海生物制品研究所有限责任公司第七研究室,200052 [2]上海生物制品研究所有限责任公司血液制剂室,200052 [3]上海生物制品研究所有限责任公司第五研究室,200052
出 处:《国际生物制品学杂志》2015年第1期17-21,共5页International Journal of Biologicals
摘 要:目的 研究静脉注射人免疫球蛋白(intravenous immunoglobulin,IVIG)工艺中辛酸处理联合20 nm膜过滤的病毒灭活/去除方法.方法 分别将脂包膜Sindbis病毒和伪狂犬病病毒(pseudorabies virus,PRV)加入pH(4.6±0.1)和pH(5.3±0.1)IVIG中间品(辛酸沉淀后上清液),在(7.47±0.39)、(14.47±0.39)和(22.47±0.39) mmol/L辛酸条件下维持(25±1)℃处理120min;将非脂包膜猪细小病毒(porcine parovirus,PPV)加入pH(6.0±0.2)MG中间品(层析流穿液),用20 nm膜过滤.检测所有样品处理前后的病毒滴度.结果 (25±1)℃处理120m in后,pH(4.6±0.1)IVIG中间品分别经(7.47±0.39)和(14.47±0.39) mmol/L辛酸钠处理后的残余病毒滴度均≤0.501g,pH(5.3±0.1)IVIG中间品分别经(14.47±0.39)和(22.47±0.39) mmol/L辛酸处理后的残余病毒滴度均≤0.50lg;20 nm膜过滤可使MG中间品的PPV滴度下降≥4.00lg.2种处理方法的结果均符合相关规定的要求.结论 在一定条件下,辛酸处理联合20 nm膜过滤可有效灭活/去除MG生产过程的相关病毒.Objective To study a virus inactivation/removel method by caprylic acid treatment combining nanofilm (20 nm) filter in production process of intravenous immunoglobulin (MG).Methods MG intermediates (supernatant after caprylic acid precipitation) at pH(4.6 ± 0.1) and pH(5.3 ± 0.1) were treated respectively with (7.47 ± 0.39),(14.47 ± 0.39) and (22.47 ± 0.39) mmol/L caprylic acid for 120 min at (25 ± 1) ℃ after lipid-enveloped Sindbis virus and pseudorabies virus (PRV) were added.MG intermediates (flowing liquid in chromatography) at pH(6.0 ± 0.2) were treated by nanofilm (20 nm) filter after non-lipid-enveloped porcine parvovirus (PPV) was added.The virus titers of all samples were determined before and after treatment.Resllts After treatment for 120 min at (25 ± 1) ℃,the residual virus titers were ≤0.50lg in IVIG intermediates at pH(4.6 ± 0.1) treated respectively with (7.47 ± 0.39) and (14.47 ± 0.39) rnmol/L caprylic acid and IVIG intermediates at pH (5.3 ± 0.1) treated respectively with (14.47 ± 0.39) and (22.47 ± 0.39) mmol/L caprylic acid.The titers of residual PPV were reduced by ≥4.00lg after using nanofilm (20 nm) filter.The results for 2 kinds of treatment methods all met requirements.Conclusion Caprylic acid treatment combining nanofilm (20 nm) filter can effectively inactivate/remove related viruses in production process of MG under certain condition.
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