Histamine Production by Transplantable Argyrophilic Gastric Carcinoid of <i>Praomys (Mastomys) natalensis</i>

Abstract

A transplantable argyrophilic gastric carcinoid of Praomys (Mastomys) natalensis contained appreciable amounts of histamine. Dialyzed, microsome-free supernatant of tumor tissue produced definite amounts of histamine in the presence of L-histidine and pyridoxal phosphate. These findings may relate to hypersecretion of gastric acid and formation of multiple ulcers in the stomach and duodenum of Mastomys bearing carcinoids.