注射武肺疫苗的主要目的,就是誘導身體產生對抗武肺病毒的抗體。321Please respect copyright.PENANA7MUYlddxem321Please respect copyright.PENANAA5uxbuT2Y8
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但身體製造抗體需時,而且免疫系統薄弱的人士亦有可能沒法製造足夠數量的抗體。在這層面上,直接注射人造抗體的話,便能免去這兩道隱憂。321Please respect copyright.PENANAEDK634w3Nl
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(圖2)從圖中所見,檢測者身體含有武肺抗體的話,身體的病毒數量相對上亦會較少,反之亦然。321Please respect copyright.PENANA618B5ls2MM321Please respect copyright.PENANApAbEOkuVhI
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可見病毒數量與體內抗體含量有著反比的關係。321Please respect copyright.PENANA7180gvf9HY
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(圖3)現今有一推斷,體內武肺病毒數量越多的話,出現重症的機會亦會相繼增加。321Please respect copyright.PENANAzR0lkI0cq0321Please respect copyright.PENANAKeavl9NOnQ
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針對這一點,REGN公司進行臨床測試,為武肺患者注射兩款武肺人造抗體321Please respect copyright.PENANA4G2uqbIPhp
casirivimab (REGN10933) 和imdevimab (REGN10987),321Please respect copyright.PENANAbIf3cMiNdh
觀察能否透過注射人造抗體來減低體內病毒的數量(Ref1)。321Please respect copyright.PENANAv6OFy5e0eK
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(圖4)分別往測試者注射安慰劑(灰線)、2g人造抗體(藍線)和8g人造抗體(綠線)後,可以見得到接受人造抗體注射的人士,其病毒在體內的下降速度比注射安慰劑的來得更快。321Please respect copyright.PENANA42W4LaK8VS321Please respect copyright.PENANARzVzReBqT9
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(圖5)但若然在注射前已被驗出擁有武肺抗體的話,額外的人造抗體注射並不會導致病毒有顯著的加快下跌(右圖);這有可能是體內的抗體本身已足夠應付現況。321Please respect copyright.PENANAgeW3xLsabn321Please respect copyright.PENANA18H186bql0
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(圖6)值得留意的是,本身病毒數量越多的話,人造抗體所促使的病毒量下跌效果便會越見明顯。321Please respect copyright.PENANASqwZ1bKutz321Please respect copyright.PENANARTfnGFWGp1
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亦即是代表當體外病毒數量超過某一定數量的時候,體內自身的抗體便會未能足以應付現況,而此時候所注射的人造抗體便會派上用場。321Please respect copyright.PENANAUNHr5gNSSL
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(圖7)人造抗體注射後的第28日,其濃度亦相對非常穩定,能給予注射人士一道保護時間。321Please respect copyright.PENANAaInrzDovGV321Please respect copyright.PENANAJuvulAogQd
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人造抗體雖能加快病毒下降的速度,但能否預防重症這一方面並未有充份證據支持。321Please respect copyright.PENANAnGtAuXK4gd
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而當患者已出現嚴重症狀後,注射人造抗體能否緩和或解決症狀亦是相當成疑。321Please respect copyright.PENANAkKreSxw4Ap
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但無論如何,若然想達到在短時間內減低體內病毒的數量,人造抗體相信是其中一道的選擇。321Please respect copyright.PENANA7VJfhhsIFL
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如果想我快啲出文的話,請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark,這對我非常之重要。321Please respect copyright.PENANAtInsY7sPnm
321Please respect copyright.PENANAzJnnCcjFiB
Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc321Please respect copyright.PENANA0aSFzi0J0u
321Please respect copyright.PENANAUlpvjtgZDP
同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」,以課金的方式推動我繼續搜羅資料寫文,多謝。321Please respect copyright.PENANAtVnOErhHXq
321Please respect copyright.PENANABBhXJXVvoi
Link:321Please respect copyright.PENANA3wJFksmTfs
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio321Please respect copyright.PENANAPuqQdkjNKq
321Please respect copyright.PENANA0LFR3RdAZq
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。321Please respect copyright.PENANAQ0jjBOrqez
321Please respect copyright.PENANAceWTNvTMGC
https://www.instagram.com/potatopigtongue/321Please respect copyright.PENANA10a6EOf0Yj
321Please respect copyright.PENANARe4EnTbQnr
321Please respect copyright.PENANAaUyq3DC3xp
Ref1:https://www.nejm.org/doi/full/10.1056/NEJMoa2035002321Please respect copyright.PENANAjeqdq2IIIn
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科普專欄–薯不揀單
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ISSUE #124
深入淺出–REGN武肺人造抗體的中期報告
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