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能将A型血转为O型血的酶被发现!有望缓解供血短缺

2019-06-19 佚名 中国新闻网

据外媒19日报道,近期,一项发布在《自然?微生物学》杂志上的研究发现,存在于人体肠道中的微生物产生的两种酶,可以将A型血转换成万能的O型血。这一发现可能缓解各医疗机构血液供应不足的情况。据报道,在人类ABO血型系统中,有A型、B型、AB型和O型四种血型。红细胞上仅有抗原A的为A型血,只有抗原B的为B型血,若同时存在A和B抗原的则为AB型血,两者皆无的则为O型血。因为O型血的红血球表面没有A和B型抗

据外媒19日报道,近期,一项发布在《自然?微生物学》杂志上的研究发现,存在于人体肠道中的微生物产生的两种酶,可以将A型血转换成万能的O型血。这一发现可能缓解各医疗机构血液供应不足的情况。

据报道,在人类ABO血型系统中,有A型、B型、AB型和O型四种血型。红细胞上仅有抗原A的为A型血,只有抗原B的为B型血,若同时存在A和B抗原的则为AB型血,两者皆无的则为O型血。因为O型血的红血球表面没有A和B型抗原,因此可以输血给任何一种血型的人,当面临紧急情况时,O型血就是全能输血者。

然而,尽管全球范围内O型血的人口最多,但并不是平均分布的。在有些国家,比如日本,多数人是A型血。因此,为了缓解O型血供应不足的情况,科学家们决定尝试将第二常见的A型血转化为O型血。

经过研究,加拿大英属哥伦比亚大学(UBC)的科学家们发现,一种名为Flavonifractor plautii的肠道细菌能产生两种特殊的酶,同时使用这两种酶可去除红细胞上的抗原A,这样就可以使A型血转化为O型血。

研究人员表示,让A型血转化为O型血有助扩大血液供给,缓解医疗机构普遍面临的血液短缺问题。

目前研究还处于早期研究阶段,研究人员必须继续观察酶是否能清干净A型血红血球表面的所有抗原,还要确认酶是否会改变红血球的其他功能而造成不良影响。

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    2019-06-21 liuxiaona
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    2019-06-20 130****4638

    倡导人们积极无偿献血,形成机制,是当前的解决之道。

    0

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