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pubmed-article:15365786pubmed:abstractTextLinalool is a major component of essential oils and possesses various biological effects in sensory or central nervous systems. To investigate the pharmacological and biophysical effects of linalool on voltage-gated currents in sensory neurons, we used the whole-cell patch clamp and the Ca(2+) imaging techniques. Under the voltage clamp, membrane depolarization generated time- and voltage-dependent current responses in newt olfactory receptor cells (ORCs). Linalool significantly and reversibly suppressed the voltage-gated currents in ORCs. The dose-suppression relation of linalool for the voltage-gated Na(+) current could be fitted by the Hill equation with a half-blocking concentration of 0.56 mM and a Hill coefficient of 1.2. To test whether linalool suppresses voltage-gated currents in ORCs specifically or suppresses currents in other neurons generally, we next examined the effects of linalool on voltage-gated currents in newt retinal neurons and rat cerebellar Purkinje cells. Linalool suppressed the voltage-gated currents not only in retinal horizontal cells and ganglion cells but also in Purkinje cells. Furthermore, bath application of linalool inhibited the KCl-induced [Ca(2+)](i) response of ORCs, suggesting that linalool suppresses Ca(2+) currents in ORCs. These results suggest that linalool non-selectively suppresses the voltage-gated currents in newt sensory neurons and rat cerebellar Purkinje cells.lld:pubmed
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pubmed-article:15365786pubmed:dateRevised2006-11-15lld:pubmed
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pubmed-article:15365786pubmed:articleTitleLinalool suppresses voltage-gated currents in sensory neurons and cerebellar Purkinje cells.lld:pubmed
pubmed-article:15365786pubmed:affiliationDepartment of Physiology, School of Medicine, Fujita Health University, Toyoake, Aichi, Japan.lld:pubmed
pubmed-article:15365786pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:15365786pubmed:publicationTypeComparative Studylld:pubmed
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