血液中の蛋白質が赤血球の磁場配向に及ぼす影響

抄録

The magnetic orientations of human red blood cells (RBCs) were investigated under strong magnetic fields up to 8 T by measuring the electrical resistivity of suspensions containing RBCs. The electrical resistivities of the suspensions were decreased by applying magnetic fields parallel to the electric field. This phenomenon indicates that RBCs are redirected by a magnetic field. It was observed that the degrees of magnetic orientation of RBCs vary according to the surrounding medium, such as plasma, serum, or phosphate buffer solution. The changes in the electrical resistivity of samples of 40% RBCs suspended in phosphate buffer solution, serum, and plasma were 15%, 8%, and less than 4%, respectively. The electrical resistivity of anticoagulated whole blood was not changed by the application of magnetic fields up to 8 T. These results show that albumin, globulin, fibrinogen, and leukocyte prevent the magnetic orientation of RBCs in blood.