title: Heparinized cadaveric organ donors (HCOD)--a potential source of hematopoietic cells for transplantation and gene therapy.
abstract: BACKGROUND
  Hematopoietic stem cells (HSC) from unrelated HLA-matched heparinized cadaveric organ donors (HCOD) are a new potential source of cells for transplantation and gene therapy. In addition, these cells could also be used as adjuvant therapy to increase microchimerism and graft tolerance after transplantations of various solid organs. Our purpose was to develop an efficient method for harvesting hematopoietic cells from HCODs,
  
  
  METHODS
  Bone marrow cells were harvested from pelvic bones and/or vertebral bodies from 50 adult HCODs before or up to 3 hr after disconnecting the donor from the respirator. Subsequently, we evaluated the hematological and gasometric parameters of aspirated marrow samples as well as the proliferative potential, viability, and expression of CD34 and AC133 antigens on these cells.
  
  
  RESULTS
  We noticed that up to 2-3 hr after disconnecting the donor from the respirator bone marrow cavities do not clot and remain uninfected and that it is possible to aspirate bone marrow mononuclear cells in quantities sufficient to perform allotransplantation. Nevertheless, due to the developing hypoxia and acidosis of the hematopoietic microenvironment the number and proliferative potential of CD34+ and AC133+ cells gradually decreases. Hence, to obtain viable early hematopoietic cells, bone marrow should be aspirated without delay; optimally before HCOD is disconnected from the respirator or at the very latest 2 hr after organ harvest.
  
  
  CONCLUSIONS
  Collectively, our results show that early hemopoietic cells may be efficiently harvested from HCOD in large quantities and used for research and/or transplantation purposes. We postulate to create an international network of banks in which hemopoietic stem cells from HCODs could be preserved for therapeutic purposes.
authors.affiliation: Department of General Pathology, Pomeranian Academy of Medicine, Szczecin, Poland.
authors.forename: B
authors.initials: B
authors.lastname: Machalinski
authors.forename: J
authors.initials: J
authors.lastname: Kijowski
authors.forename: W
authors.initials: W
authors.lastname: Marlicz
authors.forename: A
authors.initials: A
authors.lastname: Gontarewicz
authors.forename: M
authors.initials: M
authors.lastname: Markiewski
authors.forename: M
authors.initials: M
authors.lastname: Paczkowski
authors.forename: A
authors.initials: A
authors.lastname: Kopkowski
authors.forename: M
authors.initials: M
authors.lastname: Majka
authors.forename: M
authors.initials: M
authors.lastname: Ostrowski
authors.forename: M Z
authors.initials: MZ
authors.lastname: Ratajczak
mesh_terms: D000071916:AC133 Antigen; D000328:Adult; D015703:Antigens, CD; D018952:Antigens, CD34 / Q000032:analysis; D001854:Bone Marrow Cells / Q000276:immunology; D002102:Cadaver; D005260:Female; D015316:Genetic Therapy; D006023:Glycoproteins / Q000032:analysis; D018380:Hematopoietic Stem Cell Transplantation; D006412:Hematopoietic Stem Cells; D006493:Heparin / Q000494:pharmacology*; D006801:Humans; D001239:Inhalation; D008297:Male; D008875:Middle Aged; D010455:Peptides / Q000032:analysis; D013997:Time Factors; D014019:Tissue Donors; D020858:Tissue and Organ Harvesting / Q000379:methods
chemical_list: D000071916:AC133 Antigen; D015703:Antigens, CD; D018952:Antigens, CD34; D006023:Glycoproteins; C000606023:PROM1 protein, human; D010455:Peptides; D006493:Heparin