qzmjef 发表于 2024-6-22 05:09:09

癌症为么难以被治愈?为么癌症治疗会容易显现抗药性 ?


    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">癌症<span style="color: black;">为何</span>难以被治愈?</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">总的<span style="color: black;">来讲</span>有四个<span style="color: black;">原由</span>:</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">第1</span>,是身<span style="color: black;">身体</span>部<span style="color: black;">没</span>法区分。免疫系统并不会把癌细胞当做敌人对待,<span style="color: black;">那样</span>免疫细胞就不会攻击癌细胞。<span style="color: black;">因此</span>,癌细胞才会不受限制的生长<span style="color: black;">非常多</span>年以上,形成恶性肿瘤。</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">那样</span>,<span style="color: black;">为何</span>免疫系统<span style="color: black;">不可</span>区分癌细胞呢?</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">由于</span><span style="color: black;">每日</span>都有变异的细胞产生,但还不叫癌细胞,变异的细胞都给免疫系统给清除了。但有<span style="color: black;">有些</span>变异的细胞,变异出了绕过免疫系统的<span style="color: black;">检测</span>机制。这些变异的细胞才有机会<span style="color: black;">作为</span>癌细胞。</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">但这个过程是非常<span style="color: black;">繁杂</span>的,<span style="color: black;">乃至</span>有些变异细胞<span style="color: black;">起始</span>是被免疫系统识别的,但慢慢进化出了反识别能力。这<span style="color: black;">便是</span><span style="color: black;">为何</span>,热肿瘤会有癌细胞和免疫细胞生长在<span style="color: black;">一块</span>的<span style="color: black;">状况</span>,免疫细胞<span style="color: black;">起始</span>是过去清除癌细胞的,<span style="color: black;">然则</span>过去了却识别不了了。</p>
    <div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://pic2.zhimg.com/80/v2-25ef63c52309fc9021b28ad3a3fa3e25_720w.webp" style="width: 50%; margin-bottom: 20px;"></div>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">因此</span>事实上,变异出免疫系统反识别能力的癌细胞,对<span style="color: black;">咱们</span>的身体<span style="color: black;">来讲</span>,与正常的细胞没什么区别,只<span style="color: black;">不外</span>复制增殖过快,不会自我凋亡,但依然算“自己人”。而免疫系统<span style="color: black;">无</span>理由去清除自己正常的细胞。</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">第二,是身体<span style="color: black;">外边</span><span style="color: black;">没</span>法区分。身体<span style="color: black;">外边</span><span style="color: black;">便是</span>指医学,<span style="color: black;">日前</span>医学科技水平还<span style="color: black;">没</span>法找到<span style="color: black;">精细</span>有效<span style="color: black;">办法</span>,区分人体正常细胞和癌细胞,但正在向这个方向<span style="color: black;">持续</span>的<span style="color: black;">奋斗</span>。</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">细菌感染容易治愈,是<span style="color: black;">由于</span>抗生素只对细菌有效果,对身体正常细胞影响极小。<span style="color: black;">这般</span>就<span style="color: black;">能够</span>高剂量,<span style="color: black;">长期</span>的<span style="color: black;">运用</span>抗生素,直到细菌都死光光。</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">免疫系统不管癌细胞,<span style="color: black;">那样</span><span style="color: black;">仅有</span><span style="color: black;">外边</span>手段对付癌细胞。传统的化疗、放疗,都是对癌细胞和正常细胞<span style="color: black;">一块</span><span style="color: black;">损伤</span>。<span style="color: black;">倘若</span>像抗生素那样,高剂量、<span style="color: black;">长期</span><span style="color: black;">运用</span>,癌细胞是<span style="color: black;">能够</span>杀光光,但人<span style="color: black;">亦</span>死了。</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">可见,<span style="color: black;">倘若</span>能找到一种<span style="color: black;">办法</span>,对人体正常的细胞<span style="color: black;">无</span>影响,只杀癌细胞,<span style="color: black;">那样</span>癌症就<span style="color: black;">能够</span>简单的治愈了。</p>
    <div style="color: black; text-align: left; margin-bottom: 10px;"><img src="https://pic3.zhimg.com/80/v2-6c8d3e3355f2cb13c1a9eab65c760cf6_720w.webp" style="width: 50%; margin-bottom: 20px;"></div>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">第三,容易产生抗药性。医药<span style="color: black;">开发</span>并不是<span style="color: black;">无</span>发明<span style="color: black;">有些</span><span style="color: black;">药品</span>,对特定的癌细胞<span style="color: black;">特别有</span>效果。<span style="color: black;">然则</span>癌细胞变异的<span style="color: black;">火速</span>,经过有效的治疗后,只要<span style="color: black;">不足</span>彻底,再次复发的癌症,再<span style="color: black;">运用</span><span style="color: black;">起始</span>的有效药,就<span style="color: black;">没</span>效了。在癌细胞这个微观尺度上,天<span style="color: black;">晓得</span>有<span style="color: black;">无</span>几个癌细胞在治疗中幸存活了下来,<span style="color: black;">亦</span>检测不出来。</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">那<span style="color: black;">为何</span>癌细胞会容易<span style="color: black;">显现</span>抗药性?</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">答案,是<span style="color: black;">由于</span>变异,变异是进化的一种方式,而进化<span style="color: black;">能够</span>对抗<span style="color: black;">有害</span>的环境<span style="color: black;">原因</span>。对癌细胞<span style="color: black;">来讲</span>,<span style="color: black;">药品</span><span style="color: black;">便是</span><span style="color: black;">有害</span>环境<span style="color: black;">原因</span>。而最<span style="color: black;">要紧</span>的是,癌细胞分裂复制的速度<span style="color: black;">火速</span>,每次复制就有变异的概率,就有产生抗药性的概率。<span style="color: black;">因此</span>,复制的越快越多,产生抗药性的概率就越高。</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">亦</span><span style="color: black;">便是</span>说,癌细胞<span style="color: black;">由于</span>其快速复制和变异的特性,让它<span style="color: black;">持有</span>了快速适应<span style="color: black;">有害</span>环境<span style="color: black;">原因</span>的能力——<span style="color: black;">便是</span>容易产生抗药性。</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">第四,容易转移。癌细胞<span style="color: black;">经过</span>血液和淋巴循环,<span style="color: black;">能够</span>去到身体任意部位,<span style="color: black;">乃至</span><span style="color: black;">能够</span>突破血脑屏障进入“密不透风”的大脑——可见癌细胞真的是被当做了“自己人”了。</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">那样</span>,可怕的是在转移的路上,并<span style="color: black;">无</span>定居生长,这是很难被检测到的。都</p>




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