The fluctuation of urine electrolyte excretion and its relation to mortality of multiple irradiated mice

I/D ACE gene polymorphism in survival of leukemia patients -- hypothesis and pilot study

Angiotensin-I converting enzyme (ACE) is involved not only in intracellular volume regulation but also in proliferation control. Since both ACE gene polymorphism (I/D ACE) and ABO blood group determine ACE level in peripheral blood and probably also in bone marrow, the hypothesis to the interindividual differences in survival of leukemic patients was suggested. The data of 25 patients of both sexes with acute myelogenous (AML), acute lymphatic (ALL), chronic myelogenous (CML) and chronic lymphatic (CLL) leukemia treated by conventional were used for the study. The overall survival (SUR) was estimated as the time from the date of diagnosis to the date of death. The difference between patient's individual SUR (iSUR) and median SUR according to the type of leukemia (mSUR) was calculated. This difference (iSUR-mSUR) varied with I/D ACE genotype (p<0.02) but neither with diagnosis nor with ABO blood group. The regression model for iSUR calculation, from mSUR and I/D ACE genotype, has been suggested.

Bone marrow as multidimensional orbit oscillator after autologous bone marrow transplantation

The local renin-angiotensin system (RAS) in bone marrow is probably involved in the control of hematopoiesis. Earlier observations suggest the relationship between the frequency of sodium and potassium concentration changes in urine and bone marrow recovery after chemotherapy. The purpose of this study was to prove the relationship between sodium and potassium excretion changes 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 granulocytes, recorded k days later, was found in 12 patients with autologous bone marrow transplantation (BMT) and/or PBSCT. In patients with successful engraftment, k ranged from 4 to 7 days. In the patient with unsuccessful BMT, k was 12 days. The results imply the interaction between systemic and bone marrow RAS.