A pharmacist developed an allergic contact dermatitis while working with Arnica sachalinensis. Patch testing with sesquiterpene lactones was negative. The contact allergen of A. sachalinensis was identified as 10-acetoxy-8,9-epoxy-thymol-isobutyrate. This compound, or structurally related
Sesquiterpene lactones (SL), secondary plant metabolites from flowerheads of Arnica, exert anti-inflammatory effects mainly by preventing nuclear factor (NF)-kappaB activation because of alkylation of the p65 subunit. Despite its known immunosuppressive action, Arnica has been classified as a plant
Arnica montana L. (plant family: Compositae) is one of the oldest and most important drug plants. Besides its healing effects it also reveals sensitizing properties. From the literature more than 35 references with more than 100 cases of contact dermatitis could be cited, completed by four own
Three patients with occupational contact dermatitis due to Arnica longifolia Eaton and Arnica montana L. are reported. During cultivation, harvesting of the flower heads, chemical investigation of the sesquiterpene lactone constituents and preparation of therapeutic tinctures, they had frequent
After repeated intermittent use of Arnica tincture for rosacea a 66-year-old patient developed acute allergic contact dermatitis with blistering upon the single application of Arnica tincture to the dorsum of the right hand for minor swelling. Contact allergy of the delayed type to Arnica tincture
A 69-year-old patient, with known mercury and adhesive plaster allergy, developed facial dermatitis within 24 h of contact with arnica (Arnica). Skin testing showed positive reactions to arnica and, among various other plants of the Compositae, also to Tagetes sp. hybr. (marigold). Cross-reactivity
Arnica Montana Extract is an extract of dried flowerheads of the plant, Arnica montana. Arnica Montana is a generic term used to describe a plant material derived from the dried flowers, roots, or rhizomes of A. montana. Common names for A. montana include leopard's bane, mountain tobacco, mountain
Medical remedies of plant origin have gained increasing popularity in recent years. Both anaphylactic and eczematous allergic reactions are on the rise, accordingly. Arnica and marigold, both of the Compositae family, are in widespread use, but only limited data are available on their allergenic
This open multicenter trial investigated the safety and efficacy of an Arnica montana fresh plant gel, applied twice daily, in 26 men and 53 women with mild to moderate osteoarthritis (OA) of the knee. After 3 and 6 weeks, significant decreases in median total scores on the Western Ontario and
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