Effects of Transfusion of Older Stored Red Cells
2016年8月11日 更新者：Steven L. Spitalnik、Columbia University
Harmful Effects of Transfusion of Older Stored Red Cells: Iron and Inflammation
The purpose of this study is to determine the effects of transfusion of fresh and stored blood on patients.
The investigators hope to test:
- whether a similar effect (older stored blood is associated with worse outcomes) is seen in chronically transfused patients with hemoglobinopathies. This patient population will also allow the investigators to test whether iron- chelation therapy is beneficial in this setting.
- whether washing or cryopreserving the red blood cells has any effect on this outcome.
These findings may explain the immunomodulatory effects of older stored blood in patients and will help us develop safer transfusion products for patients.
研究概览
详细说明
Epidemiologic studies suggest that older stored blood is associated with worse outcomes in certain hospitalized patients.
Storage of red cells is associated with a storage lesion and the survival of transfused red cells decreases with increasing storage time, thus older blood is associated with an increased acute delivery of hemoglobin-iron to the reticuloendothelial system.
The investigators have preliminary data in healthy human volunteers suggesting that delivery of a significant iron load to the reticuloendothelial system from aged red cells leads to the elaboration of a potentially toxic form of iron known as non-transferrin-bound iron.
研究类型
介入性
注册 (实际的)
3
阶段
- 不适用
联系人和位置
本节提供了进行研究的人员的详细联系信息，以及有关进行该研究的地点的信息。
学习地点
-
-
New York
-
New York、New York、美国、10032
- Columbia University Medical Center
-
-
参与标准
研究人员寻找符合特定描述的人，称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。
资格标准
适合学习的年龄
1年 至 65年 (孩子、成人、年长者)
接受健康志愿者
是的
有资格学习的性别
全部
描述
Inclusion Criteria (Recipient):
- specific, well-characterized hemoglobinopathy
- chronic simple transfusion therapy (transfusion episodes < 6 weeks apart in frequency)
- chronic iron chelation therapy
- not pregnant by self-report and not planning pregnancy
- age > 1 year old
Exclusion Criteria (Recipient):
- clinically unstable
- treatment for mental illness
- imprisonment
- institutionalization
Inclusion Criteria (Donor):
- 21-65 years of age
- male weight > 130 lbs, female weight > 150 lbs
- male height > 5'1", female height > 5'5"
- hemoglobin > 15.0 g/dL
- reasonably certain of intention to stay in New York City metropolitan area for study duration
- previously tolerated red blood cell donation
Exclusion Criteria (Donor):
- ineligible for donation based on New York Blood Center blood donor screening questionnaire
- systolic blood pressure < 90 or > 180 mm Hg, diastolic blood pressure < 50 or > 100 mm Hg
- heart rate < 50 or > 100
- temperature > 99.5 F prior to donation
- positive by standard infectious disease testing performed on blood donors
学习计划
本节提供研究计划的详细信息，包括研究的设计方式和研究的衡量标准。
研究是如何设计的？
设计细节
- 主要用途：治疗
- 分配：非随机化
- 介入模型：单组作业
- 屏蔽：无（打开标签）
武器和干预
参与者组/臂 |
干预/治疗 |
|---|---|
|
有源比较器：Transfusion of Fresh blood
The recipient will receive one or two units of fresh blood <14 days old, as per their chronic transfusion schedule - on or off chelation therapy.
|
A routine medical procedure to transfuse packed red blood cells.
其他名称：
Processing of RBC for transfusion include the following:
其他名称：
(non-experimental) A medical procedure that involves the administration of chelating agents to remove heavy metals from the body.
|
|
实验性的：Transfusion of Stored blood
The recipient will receive one or two units of old blood >28 days old, as per their chronic transfusion schedule - on or off chelation therapy.
|
A routine medical procedure to transfuse packed red blood cells.
其他名称：
Processing of RBC for transfusion include the following:
其他名称：
(non-experimental) A medical procedure that involves the administration of chelating agents to remove heavy metals from the body.
|
|
有源比较器：Transfusion of Cryopreserved Blood
The recipient will receive one or two units of cryopreserved (fresh/old) blood, as per their chronic transfusion schedule - off chelation therapy.
|
A routine medical procedure to transfuse packed red blood cells.
其他名称：
Processing of RBC for transfusion include the following:
其他名称：
|
|
有源比较器：Transfusion of Washed Blood
The recipient will receive one or two units of washed (fresh/old) stored blood >28 days old, as per their chronic transfusion schedule - off chelation therapy.
|
A routine medical procedure to transfuse packed red blood cells.
其他名称：
Processing of RBC for transfusion include the following:
其他名称：
|
研究衡量的是什么？
主要结果指标
结果测量 |
大体时间 |
|---|---|
|
Non-transferrin-bound Iron Level
大体时间：2 hours after transfusion
|
2 hours after transfusion
|
合作者和调查者
在这里您可以找到参与这项研究的人员和组织。
调查人员
- 首席研究员：Steven Spitalnik, MD、Columbia University
研究记录日期
这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查，以确保它们在发布到公共网站之前符合特定的质量控制标准。
研究主要日期
学习开始
2012年2月1日
初级完成 (实际的)
2013年3月1日
研究完成 (实际的)
2013年3月1日
研究注册日期
首次提交
2012年2月14日
首先提交符合 QC 标准的
2012年2月16日
首次发布 (估计)
2012年2月17日
研究记录更新
最后更新发布 (估计)
2016年10月5日
上次提交的符合 QC 标准的更新
2016年8月11日
最后验证
2016年8月1日
更多信息
此信息直接从 clinicaltrials.gov 网站检索，没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求，请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改，我们的网站上也会自动更新.