title: Sustained telomere erosion due to increased stem cell turnover during triple autologous hematopoietic stem cell transplantation.
abstract: Telomeres cap chromosomal ends and are shortened throughout a lifetime. Additional telomere erosion has been documented during conventional chemotherapy or hematopoietic stem cell transplantation. Previous studies of stem cell transplantation reported variable amounts of telomere shortening with inconsistent results regarding the persistence of telomere shortening. Here we have prospectively studied telomere length and proliferation kinetics of hematopoietic cells in aggressive non-Hodgkin lymphoma patients who underwent a four-course high-dose chemotherapy protocol combined with triple autologous stem cell transplantation. We observed sustained telomere shortening in hematopoietic cells after triple stem cell transplantation with prolonged stem cell replication during the first year after stem cell transplantation.
authors.affiliation: Klinik und Poliklinik für Innere Medizin I, Universitätsklinikum Homburg, Homburg, Germany. Thomas.Widmann@uniklinikum-saarland.de
authors.forename: Thomas
authors.initials: T
authors.lastname: Widmann
authors.forename: Harald
authors.initials: H
authors.lastname: Kneer
authors.forename: Jochem
authors.initials: J
authors.lastname: König
authors.forename: Markus
authors.initials: M
authors.lastname: Herrmann
authors.forename: Michael
authors.initials: M
authors.lastname: Pfreundschuh
mesh_terms: D000911:Antibodies, Monoclonal / Q000008:administration & dosage; D058846:Antibodies, Monoclonal, Murine-Derived; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000008:administration & dosage / Q000627:therapeutic use; D002455:Cell Division; D016922:Cellular Senescence; D017326:Clinical Trials, Phase III as Topic; D003131:Combined Modality Therapy; D003520:Cyclophosphamide / Q000008:administration & dosage; D004317:Doxorubicin / Q000008:administration & dosage; D004334:Drug Administration Schedule; D005047:Etoposide / Q000008:administration & dosage; D005260:Female; D016179:Granulocyte Colony-Stimulating Factor / Q000008:administration & dosage; D006098:Granulocytes / Q000187:drug effects / Q000648:ultrastructure*; D006412:Hematopoietic Stem Cells / Q000166:cytology / Q000187:drug effects*; D006801:Humans; D008214:Lymphocytes / Q000187:drug effects / Q000648:ultrastructure*; D008228:Lymphoma, Non-Hodgkin / Q000188:drug therapy / Q000473:pathology / Q000532:radiotherapy / Q000601:surgery; D008297:Male; D008875:Middle Aged; D019653:Myeloablative Agonists / Q000009:adverse effects / Q000494:pharmacology; D038042:Myelopoiesis / Q000187:drug effects* / Q000528:radiation effects; D036102:Peripheral Blood Stem Cell Transplantation / Q000009:adverse effects / Q000379:methods*; D011239:Prednisolone / Q000008:administration & dosage; D011446:Prospective Studies; D000069283:Rituximab; D016615:Telomere / Q000648:ultrastructure*; D019172:Transplantation Conditioning / Q000009:adverse effects; D014182:Transplantation, Autologous; D014750:Vincristine / Q000008:administration & dosage
chemical_list: D000911:Antibodies, Monoclonal; D058846:Antibodies, Monoclonal, Murine-Derived; D019653:Myeloablative Agonists; D016179:Granulocyte Colony-Stimulating Factor; D000069283:Rituximab; D014750:Vincristine; D005047:Etoposide; D004317:Doxorubicin; D003520:Cyclophosphamide; D011239:Prednisolone