Research & Development - Bioscience Industrial Group, Grifols, Barcelona, Spain.
Immunotherapy. 2020 Jun;12(8):571-576. doi: 10.2217/imt-2020-0095. Epub 2020 May 12.
There is a critical need for effective therapies that are immediately available to control the spread of COVID-19 disease. Gamunex-C and Flebogamma DIF (Grifols) intravenous immunoglobulin (IVIG) products were tested using ELISA techniques for antibodies against several antigens of human common betacoronaviruses that may crossreact with the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus. Both IVIGs showed consistent reactivity to components of the tested viruses. Positive crossreactivity was seen in SARS-CoV, middle east respiratory syndrome-CoV and SARS-CoV-2. For SARS-CoV-2, positive reactivity was observed at IVIG concentrations ranging from 100 μg/ml with Gamunex-C to 1 mg/ml with Flebogamma 5% DIF. Gamunex-C and Flebogamma DIF contain antibodies reacting against SARS-CoV-2 antigens. Studies to confirm the utility of IVIG preparations for COVID-19 management may be warranted.
目前急需有效的治疗方法来控制 COVID-19 疾病的传播。Gamunex-C 和 Flebogamma DIF(基立福)静脉注射用免疫球蛋白(IVIG)产品已通过 ELISA 技术针对几种可能与严重急性呼吸综合征冠状病毒 2(SARS-CoV-2)病毒发生交叉反应的人常见β冠状病毒的抗原进行了测试。两种 IVIG 均对测试病毒的成分表现出一致的反应性。在 SARS-CoV、中东呼吸综合征-CoV 和 SARS-CoV-2 中均观察到阳性交叉反应。对于 SARS-CoV-2,在 Gamunex-C 的 100μg/ml 至 Flebogamma 5% DIF 的 1mg/ml 的 IVIG 浓度范围内观察到阳性反应。Gamunex-C 和 Flebogamma DIF 含有针对 SARS-CoV-2 抗原的抗体。可能需要进行研究以确认 IVIG 制剂在 COVID-19 管理中的效用。