Mast cell participation during the elicitation of murine allergic contact hypersensitivity Article

Kerdel, FA, Belsito, DV, Scotto-Chinnici, R et al. (1987). Mast cell participation during the elicitation of murine allergic contact hypersensitivity . JOURNAL OF INVESTIGATIVE DERMATOLOGY, 88(6), 686-690. 10.1111/1523-1747.ep12470344

cited authors

  • Kerdel, FA; Belsito, DV; Scotto-Chinnici, R; Soter, NA

authors

abstract

  • In order to evaluate mast cell participation in allergic contact hypersensitivity (ACH), BALB/c mice were sensitized with 0.1% trinitrochlorobenzene (TNCB). Immediately before challenge and at 1, 1.5, 2, 4, 6, 8, 12, 24, and 48 h after challenge with 1% TNCB, groups of animals had car thickness measured, had blood collected for histamine determinations, and had both cars removed for histologic evaluation of mast cells. The increase in ear swelling was triphasic with peak increases at 1.5 h (14.3 ± 1.6 × 10-2 mm; mean ± SEM), 8 h (19.9 ± 1.8 × 10-2 mm), and 24 h (30.2 ± 2.9 × 10-2 mm). A triphasic pattern of increased serum histamine was noted at 1-4 h (117% over control levels), at 12 h (131%), and at 48 h (133%). Examination of the tissue specimens from challenged animals showed modest (1 +) degranulation of mast cells between 1 and 6 h with extensive (2+) degranulation at 12 h. In addition, hypogranulated mast cells were evident between 1 and 6 h, at 24 h, and at 48 h. There were no statistically significant differences in mast cell numbers at any time. Neither platelets nor other formed elements of the blood contributed to the increased blood histamine levels. These data show that mast cells are activated in a triphasic pattern during ACH, and thus suggest both early and late roles for the mast cell and its products in the evolution of ACH. © 1987.

publication date

  • January 1, 1987

published in

Digital Object Identifier (DOI)

start page

  • 686

end page

  • 690

volume

  • 88

issue

  • 6