g*****a 发帖数: 1112 | 1 http://6d.dxy.cn/article/82406
感染埃博拉美国医生应用实验性药物后病情改善
2014-08-05 12:26 来源:丁香园 作者:dadadayu
据CNN报道,日前感染了埃博拉病毒的两名美国医生,肯特•布兰特利博士和南希
•怀特博尔德医生,经一种实验药物治疗后,病情好转。
7月22日,在利比里亚参与救助的布兰特利博士起床后出现发热症状,他随即将自己隔
离,3天后怀特博尔德医生出现类似症状,包括发热、呕吐和腹泻,两人经血液检查证
实已感染埃博拉病毒。
据知情人士透露,经实验药物治疗后,上周被专机接回美国的肯特•布兰特利博
士已能自行走入亚特兰大埃默里大学医院,而怀特博尔德医生则将在当地时间8月5日到
达亚特兰大。
该实验药物“ZMapp”由位于美国圣地亚哥一家名为“Mapp Biopharmaceutical”的生
物科技公司研制。在将其用于两名感染埃博拉病毒的美国医生之前,该实验药物还未进
行临床试验,而只在小样本的猴子身上进行过实验。
根据公司相关文件显示,在感染埃博拉病毒24小时内接受上述实验用药治疗的4只猴子
存活了下来;另有4只猴子在感染48小时内接受实验药物治疗,其中2只存活;另有1只
猴子未接受治疗,在5天内死亡。
据知情人士透露,布兰特利博士和怀特博尔德医生知晓该实验用药的风险并同意接受治
疗。但在动物实验中,猴子在48内即注射了实验血清,而布兰特利博士在出现症状后9
天才接受治疗。
该药物是一种小鼠单克隆抗体,3只小鼠暴露于埃博拉病毒片段,抗体在小鼠血液中不
断积累直至成为实验用药。该抗体可阻止病毒进入并感染细胞。
埃博拉病毒的感染累及多系统并伴发出血,最终导致病毒性出血热。其症状包括突然出
现的发热、无力、肌痛、头痛及咽喉疼痛,之后进展为呕吐、腹泻及肝肾功能损害,有
时还会出现内外部出血。
布兰特利博士和怀特博尔德医生于当地时间7月31日在利比里亚当地医院接受了实验性
药物ZMapp的治疗。运输过程中实验血清低温保存,药物研发人员要求医生将其在常温
下自然融化,并预计该过程将耗时8-10小时。
考虑到怀特博尔德医生更为年轻,布兰特利博士建议由怀特博尔德医生先接受血清治疗
。然而,在药物还未融化时,布兰特利博士的病情突然恶化并出现了呼吸困难,据可靠
消息透露,布兰特利博士当时对其主治医生表达了将要死亡的可能。由于为怀特博尔德
医生准备的血清已经融化,随即主治医生为布兰特利博士进行了静脉注射。
1小时后,布兰特利博士的症状得到了显著缓解,呼吸情况改善,躯干部皮疹消退。他
的一名主治医生甚至将此情况称作“奇迹”。治疗第2日早晨,在被专机运送回国之前
,布兰特利博士甚至可以自己淋浴。
怀特博尔德医生在接受第一瓶血清治疗后情况改善并不显著,然而在美国时间上周日接
受第二瓶血清治疗后,症状随即得到明显缓解。目前其情况稳定,可被运送回国。
世界卫生组织发言人Gregory Hartl 则表示:“出于很多原因,未经临床试验的药物不
宜在疾病爆发过程中应用。我们始终需要铭记,大规模应用实验初期的治疗手段和疫苗
将会带来一系列的科学和人道主义问题。作为一名医生,在患者身上应用未经临床试验
的药物是非常困难的选择,因为我们治疗的首要目的是减小伤害,而我们并不清楚这些
尚处于试验中的治疗是否会带来更大的伤害。”
信源地址:http://edition.cnn.com/2014/08/04/health/experimental-ebola-serum/ | g*****a 发帖数: 1112 | 2 国防部2010年就投了1.4亿给另一个加拿大制药公司, FDA也给了“快速通道”的优惠
政策
Correction: An earlier version of this article mistakenly identified TKM-
Ebola as a vaccine. While it has been tested as an Ebola treatment, it is
not a vaccine.
Finding money to back an investment in Ebola treatments has been difficult
— but not impossible.
A Canadian pharmaceutical company called Tekmira has been at work for the
past few years on an Ebola treatment called TKM-Ebola. It has been among the
most advanced attempts at a drug that could protect against, and treat, the
disease — but was also recently dealt a setback by the Food and Drug
Administration.
Diseases like Ebola often have difficulty attracting investment, as
pharmaceutical companies rarely see a large payday in tackling a disease
that has rare outbreaks and affects a low-income area of the world.
But TKM-Ebola has attracted the interest of the government. The Defense
Department awarded it a contract for $140 million in 2010, after the vaccine
proved completely effective in treating non-human primates in chimps. The
government's interest in vaccinating against Ebola is largely rooted in
preventing bioterrorism attacks, where the disease could be used a weapon.
In January, TKM-Ebola began Phase One trials with the Food and Drug
Administration, injecting its first patient with the drug on January 14.
This is the phase where drug companies test whether a drug is safe — that
it doesn't create dangerous complications or side effects — before bigger
studies look at whether the drug actually works.
The drug got added to the FDA's "fast track" schedule two months later, in
March. That's a designation given to drugs that can help treat conditions
without any current therapies. Once a drug receives that designation, its
creators are eligible for more frequent meetings with FDA regulators, aimed
at speeding up the drug's development.
But more recently the federal government has dealt TKM-Ebola a setback: the
FDA halted the treatment's phase one trials at the start of July, requesting
that Tekmira provide additional information about how the drug actually
works, before the company begins giving trial subjects even larger dosages.
That happens in Phase One trials to test how much the human body can handle.
So for the past month now, the TKM-Ebola trial has been on hold as Tekmira
pulls together this information. "Our team is working expediently to respond
to the FDA," Tekmira chief executive Mark Murray said in a recent statement
. "We are mindful of the need for this important therapeutic in situations
such as the ongoing Ebola outbreak in West Africa."
TKM-Ebola may not be the only hope: the New York Times reported Sunday that
unnamed Ebola vaccine has been added to the FDA's Fast Track, and will be
injected into human subjects beginning in September.
Still, both of these treatments are early in the research and development
project. After Phase One testing comes Phases Two and Three, which typically
involve running trials on hundreds and then thousands of subjects,
respectively.
The halting of the Phase One research, Jonathan Gardner at EPVantage writes,
not only "represent a setback for research into treating the deadly virus,
it also serves to demonstrate how far the sector is from discovering a cure
or vaccine." | w*****n 发帖数: 2693 | 3 这是生物WSN的胜利!
【在 g*****a 的大作中提到】 : http://6d.dxy.cn/article/82406 : 感染埃博拉美国医生应用实验性药物后病情改善 : 2014-08-05 12:26 来源:丁香园 作者:dadadayu : 据CNN报道,日前感染了埃博拉病毒的两名美国医生,肯特•布兰特利博士和南希 : •怀特博尔德医生,经一种实验药物治疗后,病情好转。 : 7月22日,在利比里亚参与救助的布兰特利博士起床后出现发热症状,他随即将自己隔 : 离,3天后怀特博尔德医生出现类似症状,包括发热、呕吐和腹泻,两人经血液检查证 : 实已感染埃博拉病毒。 : 据知情人士透露,经实验药物治疗后,上周被专机接回美国的肯特•布兰特利博 : 士已能自行走入亚特兰大埃默里大学医院,而怀特博尔德医生则将在当地时间8月5日到
| S*******l 发帖数: 4637 | 4 免疫疗法也是治疗癌症的最有希望的一个途径。前景很光明。
都想回国自己搞了。
【在 g*****a 的大作中提到】 : http://6d.dxy.cn/article/82406 : 感染埃博拉美国医生应用实验性药物后病情改善 : 2014-08-05 12:26 来源:丁香园 作者:dadadayu : 据CNN报道,日前感染了埃博拉病毒的两名美国医生,肯特•布兰特利博士和南希 : •怀特博尔德医生,经一种实验药物治疗后,病情好转。 : 7月22日,在利比里亚参与救助的布兰特利博士起床后出现发热症状,他随即将自己隔 : 离,3天后怀特博尔德医生出现类似症状,包括发热、呕吐和腹泻,两人经血液检查证 : 实已感染埃博拉病毒。 : 据知情人士透露,经实验药物治疗后,上周被专机接回美国的肯特•布兰特利博 : 士已能自行走入亚特兰大埃默里大学医院,而怀特博尔德医生则将在当地时间8月5日到
| l**m 发帖数: 88 | 5 Tekmira跑非洲放的埃博拉病毒?
the
the
【在 g*****a 的大作中提到】 : 国防部2010年就投了1.4亿给另一个加拿大制药公司, FDA也给了“快速通道”的优惠 : 政策 : Correction: An earlier version of this article mistakenly identified TKM- : Ebola as a vaccine. While it has been tested as an Ebola treatment, it is : not a vaccine. : Finding money to back an investment in Ebola treatments has been difficult : — but not impossible. : A Canadian pharmaceutical company called Tekmira has been at work for the : past few years on an Ebola treatment called TKM-Ebola. It has been among the : most advanced attempts at a drug that could protect against, and treat, the
| d**********r 发帖数: 24123 | 6 还是在 Pre-clinical 的药物阿
【在 g*****a 的大作中提到】 : http://6d.dxy.cn/article/82406 : 感染埃博拉美国医生应用实验性药物后病情改善 : 2014-08-05 12:26 来源:丁香园 作者:dadadayu : 据CNN报道,日前感染了埃博拉病毒的两名美国医生,肯特•布兰特利博士和南希 : •怀特博尔德医生,经一种实验药物治疗后,病情好转。 : 7月22日,在利比里亚参与救助的布兰特利博士起床后出现发热症状,他随即将自己隔 : 离,3天后怀特博尔德医生出现类似症状,包括发热、呕吐和腹泻,两人经血液检查证 : 实已感染埃博拉病毒。 : 据知情人士透露,经实验药物治疗后,上周被专机接回美国的肯特•布兰特利博 : 士已能自行走入亚特兰大埃默里大学医院,而怀特博尔德医生则将在当地时间8月5日到
| S*******l 发帖数: 4637 | 7 问题不大,humanized antibody, 而且这种紧急情况下,当然要上。
不过这个挣不了钱,ebola根本成不了气候。也就非洲太烂,可以肆虐。放在别的地方
,没多久就被控制了。
用处是可以做成功案例来忽悠风投。
【在 d**********r 的大作中提到】 : 还是在 Pre-clinical 的药物阿
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