- UID
- 54368
- 热情
- 3670
- 人气
- 3499
- 主题
- 59
- 帖子
- 11360
- 精华
- 8
- 积分
- 9393
- 分享
- 0
- 记录
- 0
- 相册
- 0
- 好友
- 9
- 日志
- 0
- 在线时间
- 8280 小时
- 注册时间
- 2005-10-29
- 阅读权限
- 30
- 最后登录
- 2016-7-15
升级 87.86% - UID
- 54368
- 热情
- 3670
- 人气
- 3499
- 主题
- 59
- 帖子
- 11360
- 精华
- 8
- 积分
- 9393
- 阅读权限
- 30
- 注册时间
- 2005-10-29
|
本帖最后由 prayer914 于 2010-12-15 16:28 编辑
为什么呢?分享一下好吗,谢谢!
.紫幻姬. 发表于 2010-12-15 09:10
Safety and effectiveness of using one's own cells unclearUsing one's own cord blood cells might not be wise or effective, especially in cases of childhood cancers and leukemia.[26] Children who develop an immunological disorder often are unable to use their own cord blood for transplant because the blood also contains the same genetic defect. Nearly all of the transplants using privately banked cord blood have gone to relatives with pre-existing conditions, not to the donors.[18]
Additional issues include the possible contamination of the cord blood unit with the same cancer diagnosed later in life; for example, abnormal cells have been detected in filters containing newborn blood of children who were not diagnosed with acute leukemia until the age of 2 to 6 years. The high relapse rates after autologous or syngeneic tranplant and the benefit of a graft-vs.-leukemia effect of an allogeneic transplant suggest that autologous cord blood would not be the ideal source of stem cells for patients with leukemia needing a transplant.[27]
[edit] Usability of one's own sample unknownMost cord blood samples - up to 75% - may be too small to be used for transplantation because they don't contain enough stem cells.[18] While a private bank will store a sample, the sample may be too small to be usable, even by a child. Larger numbers of blood cells are required for adults because of their typically larger body mass.
大致意思就是, 脐带血能用来治疗癌症, 白血病和免疫系统等疾病的可能性很低. 因为他们本身的脐带血里的就有不正常的基因和细胞.
还有就是近75%储藏的脐带血, 里面的细胞含量不够用来做移植, 即使是移植给一个孩子, 大人的话, 就会需要更多的细胞. |
|