title: Leukotriene B4 and 12-hydroxyeicosatetraenoic acid stimulate epidermal proliferation in vivo in the guinea pig.
abstract: Epidermal proliferation was studied in the guinea-pig ear in vivo using the incorporation of [3H]thymidine into DNA as a measure of cell proliferation. Twenty-four-hour pretreatment of the skin topically with nanomolar amounts of either leukotriene B4 (LTB4), 12-hydroxyeicosatetraenoic acid, ionophore A23187, or the epidermal mitogen 12-O-tetradecanoylphorbol-13-acetate induced dose-dependent increases in epidermal proliferation. The stimulatory effect of LTB4 was stereospecific since a number of biologically inactive LTB4 stereoisomers had no effect.
mesh_terms: D000818:Animals; D000001:Calcimycin / Q000494:pharmacology; D002455:Cell Division; D004423:Ear / Q000033:anatomy & histology; D000078404:Epidermal Cells; D006168:Guinea Pigs; D006893:Hydroxyeicosatetraenoic Acids / Q000494:pharmacology*; D007975:Leukotriene B4 / Q000494:pharmacology*; D013237:Stereoisomerism; D013755:Tetradecanoylphorbol Acetate / Q000494:pharmacology
chemical_list: D006893:Hydroxyeicosatetraenoic Acids; D007975:Leukotriene B4; D000001:Calcimycin; D013755:Tetradecanoylphorbol Acetate