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Pagina 1 a partire dal 25 risultati
Structure-activity relationships in allergic contact dermatitis (I). Studies on the influence of side-chain length with derivatives of primin.
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Primin (2-methoxy-6-pentyl-1,4-benzoquinone) is a naturally-occurring strong sensitizer from Primula obconica (Primulacease). To determine the effect of side-chain length on sensitizing potency, 15 analogues with linear side chains from C1 to C15 and 4 C6-analogues with branched side chains were
Primula dermatitis: versatility in its clinical presentation and the advantages of patch tests with synthetic primin.
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Unusual primin dermatitis.
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Erythema multiforme-like contact dermatitis from primin.
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[Contact eczema due to cousling. Value of the primin test].
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[Diagnosis of dermatitis due to plants].
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Contact dermatitis from plants may occur by several mechanisms. It may arise as a result of simple irritation or by allergic mechanism; co-exposure to sunlight can evoke the phenomena of phototoxicity or photoallergy. Etiologic diagnosis require botanical, chemical and immunologic knowledges. Patch
Allergic contact dermatitis: clinical features and profile of sensitizing allergens in Riyadh, Saudi Arabia.
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BACKGROUND
No reports are available on allergic contact dermatitis in Saudi Arabia, although it seems to be a common skin problem. We attempted to explore certain clinical aspects in addition to the profile of sensitizing allergens in our area. As no standard panel for patch testing is available in
European Standard Series patch test results from a contact dermatitis clinic in Israel during the 7-year period from 1998 to 2004.
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The results of a 7-year retrospective study (1998-2004) from patch testing with the European Standard Series (ESS) establishing the frequency of sensitization in a contact dermatitis clinic in Israel are presented. 23 allergens were patch tested on 2156 patients, 1462 females (67.8%) and 694 males
Direct emission of the allergen primin from intact Primula obconica plants.
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The allergen primin and its precursor miconidin were collected by dynamic headspace technique from Primula obconica Hance and quantified and identified by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). The primin concentrations in leaves/stems and flowers (including
[Primula eczema--well-known and overlooked].
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A case of primula dermatitis presenting as recurrent hand eczema is reported. In spite of a positive patch test reaction to primin, the diagnosis was not made until three years later, when the patient was shown a colour photo of Primula obconica and admitted contact with the plant. Since few
Primin in the European standard patch test series for 20 years.
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Primin was included in the European standard series (ESS) in 1984. In 2000, a primin-free variant of Primula obconica, the main source of contact allergy to primin, was introduced in the market. The aim of this study was to analyse the trends of primin allergy in 13 986 consecutively patch-tested
On the occurrence of the contact allergen primin and other quinoid compounds in species of the family of primulaceae.
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82 different species of the Primulacea family have been investigated by a screening test. In 16 Primula species and 4 species of other genera the strong contact allergen primin could be detected by the Craven-test. Extracts of only 12 plants gave no color reaction. In the remaining species other
Primin sensitization in north-eastern Italy: a temporal trend from 1996 to 2012.
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BACKGROUND
Primin is the main contact allergen found in the ornamental plant Primula obconica Hance.
OBJECTIVE
To analyse the temporal trend of sensitivity to primin in north-eastern Italy and to evaluate the associations with occupations in our geographical area.
METHODS
From 1996 to 2012, 24 052
Primin standard patch testing: 5 years experience.
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From 1 November 1984 to 1 November 1989. 3075 patients (1949 female and 1126 male) were patch tested with the European standard series, including primin 0.01% pet. 57 positive reactions were obtained (1.8%). About 95% of the patients with positive patch tests were female. 60% of the
Primula dermatitis.
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We report the cases of 2 patients diagnosed as having primula dermatitis. Both patients were housewives who had been exposed to primula plants. Although only one related her clinical manifestations with looking after plants, the symptoms of both remitted when contact with primula was avoided. The
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