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The aim of this work was to evaluate the IgE-sensitivity to shrimp tropomyosin (ST) in a Moroccan population from Fez region, and then to study the effect of temperature and enzymatic digestion on the allergenicity of ST. This work was conducted with a questionnaire completed by a sera-bank, obtained from 500 patients recruited from Fez Hospitals. Their sera were analyzed for specific IgE-sensitivity to ST. From questionnaire, 9.8% reported allergy to fish and shellfish where shrimp was one of the most common species causing allergy in patients. Evaluation of specific IgE showed that 10.2% of patients present higher values. Further indirect ELISA and Dot-blot results indicated that ST showed a decrease in the human IgE binding under heating or pepsin hydrolysis. These results demonstrate that this population was sensitive to ST and the sensitivity could be reduced by heating and more where it was digested by pepsin. ARTICLE HISTORY

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The aim of this study was to evaluate the immunoglobulin E (IgE) sensitivity to common pandora (Pagellus erythrinus) parvalbumin (CPP) in a Moroccan population from the Fez region, and then to study the effect of temperature and enzymatic digestion on the allergenicity of CPP. This work was conducted with a questionnaire completed by a sera-bank, obtained from 500 patients recruited from Fez hospitals. Their sera were analyzed for specific IgE against CPP. Evaluation of specific IgE showed that 11.8% of patients present higher values (>150 IU/ml). Further indirect ELISA and dot-blot results indicated that CPP showed a decrease in the binding of anti-IgE under heating with an average diminution of 41.9%, while pepsin hydrolysis reduced IgE recognition by 22.9%. These results demonstrate that this population was sensitive to CPP and the sensitivity could be reduced by heating and pepsin hydrolysis with an action higher with temperature than enzymatic digestion processing. ARTICLE HISTORY

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