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。297Please respect copyright.PENANA7DcOBiT4mZ
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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。297Please respect copyright.PENANAKkLSiCjklg
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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。297Please respect copyright.PENANAV3MGdIiSiV
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可見病毒數量與體內抗體含量有著反比的關係。297Please respect copyright.PENANAKyJ59qe1vK
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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。297Please respect copyright.PENANAyp21lg3Qy4
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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297Please respect copyright.PENANAanjS0V4E1i
casirivimab (REGN10933) 和imdevimab (REGN10987),297Please respect copyright.PENANAFN5V35wTn1
觀察能否透過注射人造抗體來減低體內病毒的數量(Ref1)。297Please respect copyright.PENANAqg7dHDECyO
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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。297Please respect copyright.PENANAw7TklvzaeQ
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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。297Please respect copyright.PENANA6mvUltITVN
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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。297Please respect copyright.PENANAPY4KwLovBV
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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。297Please respect copyright.PENANAbWyuFXiDxa
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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。297Please respect copyright.PENANAFG9qy0D7gX
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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。297Please respect copyright.PENANAZ6bvkZzsVS
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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。297Please respect copyright.PENANAqkF8599JZM
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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。297Please respect copyright.PENANA5yApXs3HH0
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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。297Please respect copyright.PENANAV9YtMvqpO3
297Please respect copyright.PENANAMOoI7hVI8Q
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/toc297Please respect copyright.PENANAqIuR8OxdmW
297Please respect copyright.PENANAzF8AD2HnYI
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。297Please respect copyright.PENANATzafsa5j5I
297Please respect copyright.PENANA3fDEsUxGk2
Link:297Please respect copyright.PENANAHiDeR7W5r9
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio297Please respect copyright.PENANAsRKKJPJ1F0
297Please respect copyright.PENANAs6q0zZYboj
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。297Please respect copyright.PENANAdVJGXlEhaN
297Please respect copyright.PENANAJU6uhn6pnJ
https://www.instagram.com/potatopigtongue/297Please respect copyright.PENANATIuuFyLHuZ
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Ref1:https://www.nejm.org/doi/full/10.1056/NEJMoa2035002297Please respect copyright.PENANAKfNpO8lOZZ
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科普專欄–薯不揀單
Author:
薯仔聞茱莉
ISSUE #124
深入淺出–REGN武肺人造抗體的中期報告
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