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Mixed allogeneic chimerism in lung allograft recipients
V Kubit1, E Sonmez-Alpan, A Zeevi
1Department of Pathology, University of Pittsburgh, PA.
Human Pathology
|April 1, 1994
Summary
Donor cells from male lung transplants were found in female recipients, but in small numbers. Further research is needed to see if these microchimeric cells impact patient prognosis or bronchiolitis obliterans development.
Area of Science:
- Immunology
- Transplantation Biology
- Genetics
Background:
- Microchimerism, the presence of cells from another individual, can occur after organ transplantation.
- Understanding donor cell dissemination is crucial for post-transplant outcomes.
Purpose of the Study:
- To investigate the extent and distribution of donor-derived microchimeric cells in female recipients of male lung allografts.
- To quantify the absolute numbers of these cells in various organs.
Main Methods:
- Autopsy analysis of nine female lung allograft recipients who survived over one month post-transplantation.
- Utilized a Y chromosome-specific probe to detect male donor cells in recipient tissues.
- Employed cell counting to determine absolute cell numbers per organ volume.
Main Results:
- Donor-derived cells were detected beyond the lung allograft, indicating systemic dissemination.
- The absolute numbers of these disseminated donor cells were found to be small.
- Cells were found in various organs, suggesting widespread migration.
Conclusions:
- Male donor cells can disseminate systemically in female recipients of lung allografts.
- The low absolute numbers warrant further investigation in larger cohorts.
- Future studies should explore the correlation between microchimerism levels and clinical outcomes, including bronchiolitis obliterans.