Humoral immune responses in cats with dermatophytosis
1993
Sparkes, A.H. | Stokes, C.R. | Gruffydd-Jones, T.J.
The IgG and IgM classes of antibodies to a water-soluble antigen preparation derived from microsporum canis were determined by ELISA in the sera of 79 cats with dermatophytosis confirmed by results of fungal culture, and of 46 specific-pathogen-free-derived, barrier-maintained cats with no previous exposure to dermatophytes. Of the 79 cats with dermatophytosis, the species isolated were: M canis from 72, M gypseum from 6, and Trichophyton mentagrophytes from 1. Concentrations of soluble M canis antigen-specific IgG and IgM were significantly (P < 0.05) higher in the cats with dermatophytosis than in the control cats. The IgG concentration was larger than or equal to 2.0 ELISA units/ ml in 71% of the cats with dermatophytosis and in 9% of the control cats, whereas IgM concentration was greater than or equal to 4.0 ELISA units/ml in 38% of the cats with dermatophytosis and in 11% of control cats. There was no significant difference in either IgG or IgM values between the cats with M canis infection and those with other non-M canis dermatophyte infections.
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