Characterization of Proliferating Compartment in B-Cell Patients and in Healthy Aging Subjects
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.
Observational
Observational Model: Cohort, Time Perspective: Prospective
Characterization of the Proliferating Compartment in B-CLL Patients and in Healthy Aging Subjects
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.
1 year
No
Nicholas Chiorazzi, MD
Principal Investigator
Feinstein Institute for Medical Research
United States: Institutional Review Board
05-05-096
NCT01110863
December 2005
January 2015
Name | Location |
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Feinstein Institute for Medical Research | Manhassett, New York 11030 |