Influence of somatostatin on peripheral leucocyte count and granulation tissue in man and rats.

Subcutaneous injection of synthetic protamin-zink-somatostatin completely prevents endotoxin-induced leucocytosis in normal rats. Piromen-induced elevated stab neutrophil, neutrophil and monocyte counts remain within the normal range during somatostatin administration. There is an inhibiting effect of synthetic protamin-zink-somatostatin on the wet weights of granulation tissue of cotton pellet granulomata, too. Incorporation of 35S-sulfate in sulfated mucopolysaccharides of granulation tissue in cotton pellet granulomata is not inhibited. Intravenous administration of synthetic linear somatostatin decreases stab neutrophil and neutrophil blood count in patients with acute bacterial leucocytosis. After the termination of somatostatin infusion a rebound phenomenon occurs. In healthy subjects lymphocyte count increases during somatostatin infusion. This effect can not be demonstrated in patients with bacterial leucocytosis.