Role of Calcium in Phosphatidylserine Externalisation in Red Blood Cells from Sickle Cell Patients
Figure 4
Effect of manipulation of intracellular on phosphatidylserine (PS) exposure in red blood cells (RBCs) from sickle cell patients. RBCs were first treated with vanadate (1βmM) to inhibit the plasma membrane pump and also the aminophospholipid translocase (flippase) before addition of bromo-A23187 (1.2βM, 1% haematocrit) and requisite extracellular []s for 30βmin. They were then treated with (0.4βmM) before labelling with FITC-annexin. Intracellular [] is calculated from extracellular , where was taken as 2.05 [36]. Results presented are from a single experiment representative of 5 others.