title: Relation between drug-induced taste disorder and chelating behavior with zinc ion; statistical approach to the drug-induced taste disorder, part II.
abstract: There are many reports that the drug-induced taste disorder is ascribable to the chelate reaction of a drug with zinc ion and the following zinc deficiency. As a quantitative measure of the chelating ability of drugs with zinc ions, the chelating ability was estimated from the electrode potential change of the Zn2+/Zn(Hg) system during the addition of a drug. The electrode potential was measured in a water-N,N-dimethylformamide mixed solution and in an aqueous solution depending on the solubility of the drugs. The observed electrode potential change showed a positive correlation to the frequency of the drug-induced taste disorder that was supplied from the manufacturer of the original drug. The regression analysis was carried out assuming that the frequency of the taste disorder and the electrode potential change was linear. The F-values, p-values, and R2-values were 4.29, 0.13, 0.589, and 4.15, 0.13, 0.580, respectively. The positive correlation between the drug-induced taste disorder and the electrode potential change appeared evident if the uncertainty in the frequency of the taste disorder was taken into consideration. Thus the assumption of the zinc ion chelating mechanism on the drug-induced disorder was also evident except for cisplatin. The frequency of the drug-induced taste disorder of bezafibrate was estimated to be 0.4--0.5 from the regression analysis.
authors.affiliation: Pharmacy Department, Saiseikai Yokohamashi Nanbu Hospital, Yokohama, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Fukasawa
authors.forename: Takao
authors.initials: T
authors.lastname: Orii
authors.forename: Masayo
authors.initials: M
authors.lastname: Tanaka
authors.forename: Noriko
authors.initials: N
authors.lastname: Suzuki
authors.forename: Yasushi
authors.initials: Y
authors.lastname: Kanzaki
mesh_terms: D002614:Chelating Agents / Q000737:chemistry*; D064420:Drug-Related Side Effects and Adverse Reactions; D007477:Ions; D013651:Taste Disorders / Q000139:chemically induced*; D015032:Zinc / Q000737:chemistry*
chemical_list: D002614:Chelating Agents; D007477:Ions; D015032:Zinc