title: Increase in intracellular calcium induced by stimulating histamine H1 receptors in macrophage-like P388D1 cells.
abstract: The addition of histamine to macrophage-like P388D1 cells resulted in a dose-dependent increase in intracellular calcium [Ca2+]i measured by fura-2 in single cells. The maximum level of [Ca2+]i was obtained by addition of 1 x 10(-4) M histamine. The increase was primarily due to release from the intracellular store. The addition of an H1 specific antagonist pyrilamine before histamine treatment inhibited the increase reversibly, while an H2 specific antagonist cimetidine had no inhibitory effect. Histamine also resulted in a dose-dependent increase in cGMP but not in cAMP. These data suggest the existence of histamine H1 receptors in these cells and histamine may have some biological effect on the function of macrophages via [Ca2+]i and cGMP as the second messengers.
authors.affiliation: First Department of Internal Medicine, Yokohama City University, School of Medicine, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Ohno
authors.forename: A
authors.initials: A
authors.lastname: Shirai
authors.forename: A
authors.initials: A
authors.lastname: Ueda
authors.forename: T
authors.initials: T
authors.lastname: Igarashi
authors.forename: Y
authors.initials: Y
authors.lastname: Ishigatsubo
authors.forename: K
authors.initials: K
authors.lastname: Tani
authors.forename: T
authors.initials: T
authors.lastname: Okubo
authors.forename: N
authors.initials: N
authors.lastname: Hikawa
authors.forename: T
authors.initials: T
authors.lastname: Kawakami
authors.forename: T
authors.initials: T
authors.lastname: Takenaka
mesh_terms: D000818:Animals; D002118:Calcium / Q000378:metabolism* / Q000494:pharmacology; D002460:Cell Line; D000242:Cyclic AMP / Q000378:metabolism; D006152:Cyclic GMP / Q000378:metabolism; D016257:Fura-2; D006632:Histamine / Q000494:pharmacology*; D007700:Kinetics; D007941:Leukemia P388; D008264:Macrophages / Q000187:drug effects / Q000502:physiology*; D008856:Microscopy, Fluorescence; D011738:Pyrilamine / Q000494:pharmacology*; D011969:Receptors, Histamine H1 / Q000187:drug effects / Q000502:physiology*
chemical_list: D011969:Receptors, Histamine H1; D006632:Histamine; D000242:Cyclic AMP; D006152:Cyclic GMP; D011738:Pyrilamine; D002118:Calcium; D016257:Fura-2