Studies on the retest reaction in contact sensitivity to DNCB. 1978

S Nakagawa, and S Fukushiro, and M Gotoh, and M Kohda, and M Namba, and K Tanioku

DNCB-sensitized guinea pigs demonstrated an accelerated reactivity on retest of DNCB at the site of prior contact reaction, though presenting normal contact sensitivity at the virgin site. The retest reaction reached maximal at 9 h and waned at 24 h after antigenic challenge. Massive accumulation of eosinophils in either the epidermis or dermis was its distinguishing histologic feature. The reaction was induced at the site of delayed skin reaction to DNP-GPE in the animals sensitized with DNCB or DNP-GPE. A retest reaction in delayed sensitivity to DNP-GPE was also elicited at the site of contact reaction to DNCB in the animals. The significance of these findings is discussed.

UI MeSH Term Description Entries
D006968 Hypersensitivity, Delayed An increased reactivity to specific antigens mediated not by antibodies but by sensitized T CELLS. Hypersensitivity, Tuberculin-Type,Hypersensitivity, Type IV,Tuberculin-Type Hypersensitivity,Type IV Hypersensitivity,Delayed Hypersensitivity,Delayed Hypersensitivities,Hypersensitivity, Tuberculin Type,Tuberculin Type Hypersensitivity,Tuberculin-Type Hypersensitivities,Type IV Hypersensitivities
D008297 Male Males
D009578 Nitrobenzenes BENZENE derivatives carrying nitro group substituents.
D004137 Dinitrochlorobenzene A skin irritant that may cause dermatitis of both primary and allergic types. Contact sensitization with DNCB has been used as a measure of cellular immunity. DNCB is also used as a reagent for the detection and determination of pyridine compounds. 1-Chloro-2,4-Dinitrobenzene,2,4-Dinitrochlorobenzene,Benzene, 1-Chloro-2,4-Dinitro-,Chlorodinitrobenzene,DNCB,1 Chloro 2,4 Dinitrobenzene,2,4 Dinitrochlorobenzene
D004342 Drug Hypersensitivity Immunologically mediated adverse reactions to medicinal substances used legally or illegally. Allergy, Drug,Hypersensitivity, Drug,Drug Allergy,Allergies, Drug,Drug Allergies,Drug Hypersensitivities,Hypersensitivities, Drug
D004804 Eosinophils Granular leukocytes with a nucleus that usually has two lobes connected by a slender thread of chromatin, and cytoplasm containing coarse, round granules that are uniform in size and stainable by eosin. Eosinophil
D006168 Guinea Pigs A common name used for the genus Cavia. The most common species is Cavia porcellus which is the domesticated guinea pig used for pets and biomedical research. Cavia,Cavia porcellus,Guinea Pig,Pig, Guinea,Pigs, Guinea
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
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
D000941 Antigens Substances that are recognized by the immune system and induce an immune reaction. Antigen

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