Role of histamine H3 receptor in glucagon-secreting αTC1.6 cells

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Abstract

Pancreatic α-cells secrete glucagon to maintain energy homeostasis. Although histamine has an important role in energy homeostasis, the expression and function of histamine receptors in pancreatic α-cells remains unknown. We found that the histamine H3 receptor (H3R) was expressed in mouse pancreatic α-cells and αTC1.6 cells, a mouse pancreatic α-cell line. H3R inhibited glucagon secretion from αTC1.6 cells by inhibiting an increase in intracellular Ca2+ concentration. We also found that immepip, a selective H3R agonist, decreased serum glucagon concentration in rats. These results suggest that H3R modulates glucagon secretion from pancreatic α-cells.

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Nakamura, T., Yoshikawa, T., Naganuma, F., Mohsen, A., Iida, T., Miura, Y., … Yanai, K. (2015). Role of histamine H3 receptor in glucagon-secreting αTC1.6 cells. FEBS Open Bio, 5, 36–41. https://doi.org/10.1016/j.fob.2014.12.001

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