Contact dermatitis · 2019
Screening for Compositae contact sensitization with sesquiterpene lactones and Compositae mix 2.5% pet.
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Paulsen Evy, Andersen Klaus E
Аннотация
BACKGROUND: Compositae contact sensitization may be difficult to diagnose, because of a lack of reliable screening allergens.
OBJECTIVES: To assess the suitability of Compositae mix II 2.5% pet. (CM2.5) as a screening mix in the baseline series combined with sesquiterpene lactone (SL) mix and parthenolide (PTH).
METHODS: CM2.5 was added to the baseline series, which included SL mix and PTH 0.1% pet., in January 2015, and PTH was included in TRUE Test Panel 3 in October 2015. All Compositae-sensitive patients diagnosed or tested in the next 4 years were assessed.
RESULTS: Altogether, 57 patients (2.7%) presented with Compositae allergy. On primary testing in 53 newly diagnosed patients, SL mix elicited positive reactions most frequently (53% positive), followed by CM2.5 (47% positive), and PTH (45% positive). CM2.5 and PTH pet. elicited a few irritant reactions. Three patients had late reactions. Altogether, 16 patients (28%) were not detected by any of the three screening agents.
CONCLUSIONS: SL mix is an indispensable, although insufficient, screening mixture in Denmark. It may be relatively safely supplemented with CM2.5 and PTH in the TRUE Test system for screening, but, when Compositae sensitization is suspected, further extracts should be tested on the basis of the history.
OBJECTIVES: To assess the suitability of Compositae mix II 2.5% pet. (CM2.5) as a screening mix in the baseline series combined with sesquiterpene lactone (SL) mix and parthenolide (PTH).
METHODS: CM2.5 was added to the baseline series, which included SL mix and PTH 0.1% pet., in January 2015, and PTH was included in TRUE Test Panel 3 in October 2015. All Compositae-sensitive patients diagnosed or tested in the next 4 years were assessed.
RESULTS: Altogether, 57 patients (2.7%) presented with Compositae allergy. On primary testing in 53 newly diagnosed patients, SL mix elicited positive reactions most frequently (53% positive), followed by CM2.5 (47% positive), and PTH (45% positive). CM2.5 and PTH pet. elicited a few irritant reactions. Three patients had late reactions. Altogether, 16 patients (28%) were not detected by any of the three screening agents.
CONCLUSIONS: SL mix is an indispensable, although insufficient, screening mixture in Denmark. It may be relatively safely supplemented with CM2.5 and PTH in the TRUE Test system for screening, but, when Compositae sensitization is suspected, further extracts should be tested on the basis of the history.