Human GHRH was found to trigger histamine release from mast cells in rat pleural and peritoneal tissues. The release was temperature-dependent (optimal at 37 degrees Celsius) and could be blocked by a metabolic inhibitor, suggesting it involves active cellular processes rather than simple membrane disruption.
Estévez, M D; Botana, M A; Arnáez, E; Vieytes, M R; Botana, L M