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Shiitake mushroom (Lentinus edodes): A poorly known allergen in Western countries responsible for severe work-related asthma

100%

Pravettoni V., Primavesi L., Piantanida M.

International Journal of Occupational Medicine and Environmental Health

2014

vol. 27

issue 5

871-874

Objectives: The aim of this study was to investigate the IgE-mediated pathogenesis of severe asthma presented by a patient only after handling shiitake (Lentinus edodes) mushrooms (SM). Material and Methods: Skin tests were performed using in-house extracts from mushrooms that the patient usually handled, i.e., shiitake, porcini, oyster and black fungus mushroom varieties. Specific IgE to champignons and various molds were determined. Sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) immunoblotting was performed to detect IgE-binding components. Four negative controls were included in the study. Results: Skin prick tests performed with in-house mushroom extracts from varieties other than shiitake were completely negative, in contrast to the positive test obtained for shiitake mushrooms. Serum specific IgE levels for common molds and champignons were all negative. SDS-PAGE revealed many protein bands in the four mushroom extracts. Immunoblotting using the patient’s serum showed allergenic bands at about 15 and 24 kDa exclusively for SM that were not shared with negative controls. Another faint band was detectable at approximately 37 kDa for SM and porcini varieties. Conclusions: Here, we present the first European case of SM-induced occupational asthma, a disease more frequently occurring in Asia. Asthma attacks stopped when the patient avoided contact with shiitake mushrooms. No skin reactions and no IgE-binding proteins by immunoblotting were detectable with the other mushrooms tested. The positive skin test with shiitake mushrooms and IgE-binding components in the shiitake extract confirmed the IgE-mediated etiology of the reaction.

Procesy wpływające na zawartość witaminy D w grzybach

58%

Kobus-Cisowska J., Zawadzka A.

Zagadnienia Doradztwa Rolniczego

2020

issue 4 (102)

69-79

Powszechnie spożywane gatunki grzybów pod wpływem działania promieni UV (światło słoneczne lub lampa UV) mogą generować istotne z punktu widzenia żywieniowego zawartości witaminy D. Główną formą witaminy D, która występuje w grzybach jest D2 (ergokalcyferol C28H44O) oraz mniejsze ilości D3 (cholekalcyferolC27H44O) i D4 (22-dihydroergokacyferol C28H46O). Witamina D3 w największych ilościach znajduje się w produktach pochodzenia zwierzęcego. Źródłem witaminy D2 są grzyby. Pomimo tego, że procesy technologiczne lub przechowywanie powodują spadek jej zawartości, zawartość D2 w grzybach może stanowić dobre jej źródło w diecie. Celem pracy była analiza aktualnych danych literaturowych w zakresie wpływu promieniowania UV na syntezę witaminy D2 w grzybach, a także wpływu ich przechowywania i obróbki termicznej na jej zawartość i biodostępność.

Commonly consumed mushroom species exposed to UV radiation (sunlight or UV lamp) can generate nutritionally important amounts of vitamin D. The most common form of vitamin D in mushrooms is D2, with lesser amounts of vitamin D3 and D4, while vitamin D3 is the most common form of vitamin in animal products. Although the level of vitamin D2 in mushrooms exposed to UV radiation may decrease with storage and cooking, if they are consumed before the expiry date, the level of vitamin D2 is likely to remain above 10 μg / 100 fresh masstherefor mushrooms have the potential to be the only non-animal and unenriched food source that can provide a significant amount of vitamin D2. This review analyses current information on the role of UV radiation in enhancing concentration of vitamin D2 in mushromms, the effects of storage and cooking on D2 content, and bioavailability of vitamin D2 from mushrooms.

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1 International Journal of Occupational Medicine and Environmental Health

1 Zagadnienia Doradztwa Rolniczego

1 Kobus-Cisowska J.

1 Piantanida M.

1 Pravettoni V.

1 Primavesi L.

1 Zawadzka A.

1 2020

1 2014

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Shiitake mushroom (Lentinus edodes): A poorly known allergen in Western countries responsible for severe work-related asthma

Procesy wpływające na zawartość witaminy D w grzybach