title: Bone-marrow regeneration after therapy-induced hypoplasia monitored by serum measurements of lactoferrin, lysozyme and myeloperoxidase.
abstract: Serum levels of lactoferrin, lysozyme and myeloperoxidase were measured sequentially after induction treatment in 30 patients with AML in order to test the hypothesis that these proteins may be used to monitor activity and different stages of myelopoiesis in the bone-marrow. The results showed that myeloperoxidase and lysozyme started to rise again 6-8 days after initiation of treatment as compared to 12 d for lactoferrin and 16 d for blood polymorphonuclear leukocytes. The rate of marrow regeneration was exponential and estimated to be 9-20% per d. The comparison between two different chemotherapy regimes showed that the initial reduction in lysozyme, in contrast to other measured variables, was significantly larger with the therapy that contained vincristine and glucocorticosteroids. This might reflect a reduction in lysozyme secretion in addition to the effects on the leukemic cell mass. We conclude that the measurements of lactoferrin, lysozyme and myeloperoxidase in serum under certain circumstances may be used to monitor the myelopoietic activity in the bone-marrow.
mesh_terms: D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use*; D001853:Bone Marrow / Q000503:physiopathology*; D003561:Cytarabine / Q000008:administration & dosage; D003630:Daunorubicin / Q000008:administration & dosage; D004317:Doxorubicin / Q000008:administration & dosage; D006410:Hematopoiesis / Q000187:drug effects; D006801:Humans; D007781:Lactoferrin / Q000097:blood*; D007782:Lactoglobulins / Q000097:blood*; D015470:Leukemia, Myeloid, Acute / Q000188:drug therapy* / Q000503:physiopathology; D007958:Leukocyte Count; D009113:Muramidase / Q000097:blood*; D009504:Neutrophils / Q000201:enzymology; D009195:Peroxidase / Q000097:blood*; D011239:Prednisolone / Q000008:administration & dosage; D013866:Thioguanine / Q000008:administration & dosage; D013997:Time Factors; D014750:Vincristine / Q000008:administration & dosage
chemical_list: D007782:Lactoglobulins; D003561:Cytarabine; D014750:Vincristine; D004317:Doxorubicin; D011239:Prednisolone; D009195:Peroxidase; D009113:Muramidase; D007781:Lactoferrin; D013866:Thioguanine; D003630:Daunorubicin