Bone marrow as multidimensional orbit oscillator after autologous bone marrow transplantation

The local renin-angiotensin system (RAS) in bone marrow is probably involve d in the control of hematopoiesis. Earlier observations suggest the relatio nship between the frequency of sodium and potassium concentration changes i n urine and bone marrow recovery after chemotherapy, The purpose of this st udy was to prove the relationship between sodium and potassium excretion ch anges in urine and granulocyte counts in peripheral blood after autologous bone marrow and peripheral blood stem cell transplantation. The correlation between amplitude maximum FFmax of F=d[Na]/d[K], where d[Na ] and d[K] are changes of sodium and potassium excretions in 24 h, and gran ulocytes, recorded k days later, was found in 12 patients with autologous b one marrow transplantation (BMT) and/or PBSCT, In patients with successful engraftment, k ranged from 4 to 7 days. In the patient with unsuccessful BM T, k was 12 days. The results imply the interaction between systemic and bone marrow RAS.