婴幼儿也可用羟基脲治疗贫血
发布时间:2011-05-18 11:25 来源:君健网
英国医学期刊《柳叶刀》刊登的一项新研究成果显示,对于那些患镰刀型细胞贫血症的婴幼儿来说,可使用一种名为羟基脲的药物来减少疼痛等并发症。这是医学界首次试验该药对婴幼儿的疗效,结果显示副作用不大,可安全使用。
美国圣祖德儿童研究医院等机构的研究人员报告说,参加试验者为大约200名年龄在9个月到18个月的婴幼儿患者,其中一部分婴幼儿服用羟基脲,另一部分婴幼儿作为对照组。随后的跟踪调查发现,那些服用羟基脲的婴幼儿会显著减少因镰刀型细胞贫血症而出现疼痛、指趾炎等并发症的频率。
镰刀型细胞贫血症是一种遗传疾病,患者血液中的红细胞会呈镰刀型,而不是像正常人的红细胞那样呈圆饼型。镰刀型细胞也不像正常细胞那样有弹性,因此不能通过某些较窄的血管,会引起贫血及一系列并发症,如疼痛、脾和肾等器官受损,在婴幼儿中还会引起指趾炎。这种疾病目前不能治愈,只能使用药物来缓解症状。
此前羟基脲已被用于成人治疗镰刀型细胞贫血症,它可以帮助缓解一些并发症。但年龄很小的婴幼儿是否也能用这种药,此前缺少相关证据。本次研究显示,该药在婴幼儿身上引起的副作用主要是造成一种白细胞减少,影响不是很大,因此可以安全使用。
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