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Delayed type allergic itch-associated response induced by toluene-2,4-diisocyanate in hairless mice. 2003

Kazuhiro Fuchibe, and Takeshi Nabe, and Masanori Fujii, and Nobuaki Mizutani, and Kiichiro Danno, and Akihide Koda, and Shigekatsu Kohno
Department of Pharmacology, Kyoto Pharmaceutical University, Kyoto, Japan.

To develop an allergic dermatitis model showing persistent scratching in mice, toluene-2,4-diisocyanate (TDI) was repeatedly painted onto the skin of hairless HR-1 mice, and induction of itch-associated scratching behavior was observed. When HR-1 mice were epicutaneously sensitized with 1% TDI and then challenged by repeated painting the cervicodorsal skin with 0.1% TDI once every 10 days until the 10th challenge, delayed type scratching responses peaked at 1 - 2 days after challenge. TDI at 0.1% hardly induced scratching in non-sensitized HR-1 mice. The delayed scratching response was influenced by neither an H(1) nor 5-HT(1/2) receptor antagonist. On the other hand, intradermal injection of histamine and serotonin induced frequent scratching in HR-1 mice. In conclusion, repeated application of TDI can induce delayed type allergic scratching. Although HR-1 mice are high responders to both histamine and serotonin, induction of the delayed response depends on neither of these chemical mediators. This delayed response may be useful in analyzing the mechanisms of allergic pruritus.

UI MeSH Term Description Entries
D008297 Male Males
D008812 Mice, Hairless Mutant strains of mice that produce little or no hair. Hairless Mice,Mice, Inbred HRS,Mice, hr,Hairless Mouse,Mice, HRS,Mouse, HRS,Mouse, Inbred HRS,HRS Mice,HRS Mice, Inbred,HRS Mouse,HRS Mouse, Inbred,Inbred HRS Mice,Inbred HRS Mouse,Mouse, Hairless
D008813 Mice, Inbred ICR An inbred strain of mouse that is used as a general purpose research strain, for therapeutic drug testing, and for the genetic analysis of CARCINOGEN-induced COLON CANCER. Mice, Inbred ICRC,Mice, ICR,Mouse, ICR,Mouse, Inbred ICR,Mouse, Inbred ICRC,ICR Mice,ICR Mice, Inbred,ICR Mouse,ICR Mouse, Inbred,ICRC Mice, Inbred,ICRC Mouse, Inbred,Inbred ICR Mice,Inbred ICR Mouse,Inbred ICRC Mice,Inbred ICRC Mouse
D011537 Pruritus An intense itching sensation that produces the urge to rub or scratch the skin to obtain relief. Itching,Pruritis
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D013997 Time Factors Elements of limited time intervals, contributing to particular results or situations. Time Series,Factor, Time,Time Factor
D014051 Toluene 2,4-Diisocyanate Skin irritant and allergen used in the manufacture of polyurethane foams and other elastomers. Diisocyanatotoluene,Tolylene Diisocyanate,2,4-Toluenediisocyanate,Toluene Diisocyanate,2,4 Toluenediisocyanate,2,4-Diisocyanate, Toluene,Diisocyanate, Toluene,Diisocyanate, Tolylene,Toluene 2,4 Diisocyanate
D017449 Dermatitis, Allergic Contact A contact dermatitis due to allergic sensitization to various substances. These substances subsequently produce inflammatory reactions in the skin of those who have acquired hypersensitivity to them as a result of prior exposure. Allergic Contact Dermatitis,Dermatitis, Allergic Eczematous,Dermatitis, Contact, Allergic,Allergic Contact Dermatitides,Allergic Eczematous Dermatitides,Allergic Eczematous Dermatitis,Contact Dermatitides, Allergic,Contact Dermatitis, Allergic,Dermatitides, Allergic Contact,Dermatitides, Allergic Eczematous,Eczematous Dermatitides, Allergic,Eczematous Dermatitis, Allergic
D051379 Mice The common name for the genus Mus. Mice, House,Mus,Mus musculus,Mice, Laboratory,Mouse,Mouse, House,Mouse, Laboratory,Mouse, Swiss,Mus domesticus,Mus musculus domesticus,Swiss Mice,House Mice,House Mouse,Laboratory Mice,Laboratory Mouse,Mice, Swiss,Swiss Mouse,domesticus, Mus musculus

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