Blockade of the flush associated with metastatic gastric carcinoid by combined histamine H1 and H2 receptor antagonists. Evidence for an important role of H2 receptors in human vasculature. Roberts LJ, Marney SR, Oates JA (1979) N Engl J Med 300: 236-8 Histamine directly and synergistically with lipopolysaccharide stimulates cyclooxygenase-2 expression and prostaglandin I(2) and E(2) production in human coronary artery endothelial cells. Tan X, Essengue S, Talreja J, Reese J, Stechschulte DJ, Dileepan KN (2007) J Immunol 179: 7899-906 Functional selectivity induced by mGlu₄ receptor positive allosteric modulation and concomitant activation of Gq coupled receptors. Yin S, Zamorano R, Conn PJ, Niswender CM (2013) Neuropharmacology 66: 122-32 Histamine elevates free intracellular calcium in mouse retinal dopaminergic cells via H1-receptors. Frazão R, McMahon DG, Schunack W, Datta P, Heidelberger R, Marshak DW (2011) Invest Ophthalmol Vis Sci 52: 3083-8
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