“…In a clinical study [9], we determined the plasma concentrations of the (44-68) PTH peptide in patients who underwent heart catheterization. This was performed to demonstrate or exclude coronary artery dis ease in patients with myocardial infarction, typical or atypical angina and valvular heart disease.It is an established fact now that intracellular calcium is higher in arterial smooth muscle, red blood cells, thrombocytes, and lymphocytes [10][11][12][13] in laboratory animals and in patients with hypertention. It is also accepted that this is due to an increased calcium influx.…”