We investigated the correlations of blood pressure with intra- or extracellular and bone calcium matabolisms in the elderly. We measured serum calcium (Ca), inorganic phosphorus (Pi), C-terminal parathyroid hormone fragment (PTH-C), and calcitonin. Intracellular free calcium ([Ca2+]I) in platelet and erythrocyte was measured by fura- 2/AM from dual excitation wavelength using a fluorescence spectrophotometer. We calculated bone mineral content (BMC) of lumbar vertebral body using a calibration phantom by computed tomography. Systolic blood pressure had significant positive correlation with platelet [Ca2+]I (r=0.691
Vestibular ganglion cells
Embryonic development
Morphology
Chick embryo