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Experimental allergic orchitis in mice. II. Association of disease susceptibility with the locus controlling Bordetella pertussis-induced sensitivity to histamine.

Susceptibility to the induction of murine autoimmune orchitis was found to be associated with the locus controlling Bordetella pertussis-induced sensitivity to the vasoactive amine, histamine. Only those inbred and H-2 congenic strains of mice possessing both the H-2d haplotype and the locus for susceptibility to B. pertussis-induced sensitivity to histamine developed autoimmune orchitis. In addition, segregation analysis of backcross generation mice also demonstrated a high degree of correlation between susceptibility both to disease and to histamine sensitization, which was indicative of additional multigene control. Pertussigen-histamine sensitization factor (P-HSF) was only effective in eliciting disease when it was administered on the same day, or within a period up to 6 days following sensitization with mouse testicular homogenate-emulsified in complete Freund's adjuvant. P-HSF induced sensitivity to histamine was not found to be associated with an increase in the vascular permeability of target tissue. Thus, B. pertussis-induced sensitivity to histamine appears to play a more crucial role during the sensitization phase of autoimmune orchitis induction, rather than at the inflammatory or effector phase of the disease.