Characterization of Proliferating Compartment in B-Cell Patients and in Healthy Aging Subjects
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 90
- 试验地点
- 1
- 主要终点
- Characterization of the Proliferating Compartment in B-CLL Patients and in Healthy Aging Subjects
研究概览
简要总结
By ingesting a non-radioactive and non-toxic compound "heavy water" for 6 weeks, the DNA of newly developed cells in the body of subjects with B-cell chronic lymphocytic leukemia can be labeled and followed by performing routine blood draws at specified time intervals. By using mass spectrometric analysis we can measure how quickly new B-CLL cells are generated in the bone marrow and how quickly they leave the blood, a measure of cell turnover. This will help us to better understand the unique characteristics of this disease process.
详细描述
By ingesting a non-radioactive and non-toxic compound "heavy water" for 6 weeks, the DNA of newly developed cells in the body of subjects with B-cell chronic lymphocytic leukemia (B-CLL) can be labeled and followed by performing routine blood draws at specified time intervals. By using mass spectrometric analysis we can measure how quickly new B-CLL cells are generated in the bone marrow and how quickly they leave the blood, a measure of cell turnover. This will help us to better understand the unique characteristics of this disease process.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •18 years of age,
- •Patients must be willing to contribute the required amount of blood without compromising their well being,
- •Participants must be willing to be contacted in the future.
排除标准
- •Pregnancy,
- •Patients who are known to be anemic, with a hemoglobin < 8,
- •Patients who are known to be infected with HIV.
结局指标
主要结局
Characterization of the Proliferating Compartment in B-CLL Patients and in Healthy Aging Subjects
时间窗: 1 year
B-CLL is a dx of accumulation rather than proliferation. Evidence for various forms of clonal evolution suggests that B-CLL clones may be more dynamic than previously assumed. A non-radioactive, stable isotopic labeling method to measure B-CLL cell kinetics in vivo. Subjects drank an aliquot of 2H2O daily for 84 days, and 2H incorporation into the deoxyribose moiety of DNA of their newly divided B-CLL cells, measured by gc/ms, during the labeling period. Birth rates were calculated from the kinetic profiles. Death rates were defined as the difference between calculated birth and growth rates.
次要结局
未报告次要终点
研究者
Nicholas Chiorazzi
Investigator, The Feinstein Institute for Medical Research
Northwell Health