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  • Title: An immunocytochemical analysis of a class-specific antibody response against Trichinella spiralis in humans.
    Author: Takahashi Y, Uno T, Mizuno N, Tokuda C, Shimazu K, Araki T.
    Journal: J Electron Microsc (Tokyo); 1991 Apr; 40(2):136-42. PubMed ID: 1895030.
    Abstract:
    The response of different classes of antibodies against antigens of the muscle larvae of Trichinella spiralis was tested using an immunocytochemical approach. Ultrathin sections of resin-embedded larvae were treated with sera from patients with trichinosis, then exposed to a biotinated second antibody and stained with avidin-gold complex. Antibody of the M-class was a major component in the response against a slow-responding group of antigens that included stichocyte granules, the cuticle surface, and the esophagus-occupying substance; a minor component in the response against antigens of the rapid-responding group that included cuticle inner layers, hypodermis, hemolymph, and intestinal gland granules. The response of G-class antibody against the rapid-responding group of antigens was detected in all patients tested, while against the slow-responding group of antigens it was detected in only half of the patients, suggesting that an antibody shift from the M to the G class occurred in some patients. The results, obtained in humans, were similar to those we obtained previously in rats (J. Parasitology, 76,230-239, 1990), suggesting that the rat immune system can serve as an experimental model of human trichinosis.
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