Along with gastrin, this molecule stimulates hydrochloric acid release from the stomach's parietal cells when it is itself released from enterochromaffin-like cells.
Neurons in the tuberomammillary nucleus release this molecule during periods of wakefulness, but not during REM or non-REM sleep, suggesting that it maintains behavioral arousal. Ranitidine blocks its type 2 receptors. Along with gastrin, this molecule stimulates hydrochloric acid release from the stomach's parietal cells when it is itself released from enterochromaffin-like cells. This molecule is also secreted by certain (*) granulocytes that also release heparin. Those cells, which degranulate in response to antigen-triggered cross-linking of IgE, are mast cells. This molecule's type 1 receptor is blocked by Claritin and Benadryl. For 10 points, identify this molecule produced by decarboxylating histidine, which triggers the inflammatory response seen in allergies.
Neurons in the tuberomammillary nucleus release this molecule during periods of wakefulness, but not during REM or non-REM sleep, suggesting that it maintains behavioral arousal.
histamine [accept HA]