Strana 1 od 22 výsledky
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
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
Primula obconica, a member of the Primulaceae family, was introduced to Britain from China in 1880. P. obconica cultivars, which are reputed to contain less primin, have been developed over the past number of years in an attempt to reduce the incidence of allergic contact dermatitis. Primin
A female florist, who ran a flowershop from 1954 to 1966 had to quit her job because of her known contact allergy due to chrysanthemums and primrose. Though in the meantime 12 years had passed she suffered occasionally from redness of the pharynx and stomachache after ingestion of tea prepared from
In six persons with contact allergy to chrysanthemum of florists, patch tests were performed with 25 sequiterpene lactones. Positive responses were observed to 15 lactones. The most frequently encountered positive responses were to alantolactone (positive in all cases) and to arbusculin A,
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
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
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
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
Hundred patients (61 males, 39 females) suspected to have allergic contact dermatitis were patch tested with Indian standard series (ISS). Forty four showed one or more positive reactions. The frequent sensitizers observed were nickel sulphate--12 (15%), potassium dichromate--11 (13.75%), cobalt
Computer data on 4721 consecutive patients patch tested with an extended standard series were analysed for the frequency of allergic reactions to each substance. Particular attention was given to the negative first reading at day 2 (D2) which later became positive at day 4 (D4). A total of 4210
BACKGROUND
Periodically updated, the European baseline series (EBS), first introduced in France in 1980, is an indispensable tool for the exploration of contact allergy. The aim of our study was to describe the prevalence of contact sensitization in a French centre between 1981 and 2011 to determine
Allergic contact dermatitis to Primula obconica has long been established. It is considered a significant allergen in Europe and has been included in standard screening there. The allergen is much less common in the United States. The frequency of allergy to P obconica in the United States is
Background: Prevalences of sensitivity to contact allergens change over time as a result of variations in allergen exposure.
Objectives: The aim of the study was to describe
BACKGROUND
Identification of patients at risk of developing polysensitization is not possible at present. An association between weak sensitizers and polysensitization has been hypothesized.
OBJECTIVE
To examine associations of 21 allergens in the European baseline series to