benzyl salicylate/hypersensitivity

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Benzyl salicylate: a survey of consumer patch-test sensitization.

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The potential of benzyl salicylate, an important fragrance and flavour ingredient, to induce hypersensitivity or to elicit reactions to pre-existing hypersensitivity in the general population was evaluated by analysing patch-test data. Results obtained from fragrance and formulator companies for a

Pigmented Facial Contact Dermatitis to Benzyl Salicylate: A Comparative Histopathological and Immunohistochemical Study of the Involved Skin and the Positive Patch Test Site.

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Pigmented contact dermatitis (PCD) is a noneczematous variant of allergic contact dermatitis, and benzyl salicylate is one of its causes. This type of PCD shows nonlichenoid interface dermatitis with pigment incontinence. We aimed to characterize the earliest histopathological changes of this

Differential hypermelanosis induced by allergic contact dermatitis.

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In moderately colored guinea-pig skin, UVB, PUVA (psoralen plus UVA), and allergic contact dermatitis were shown to induce visibly well-defined hyperpigmentation that resembled the pigmentary changes observed in Mongoloid human skin. To clarify mechanisms of allergen-induced hyperpigmentation, we

Propolis specimens from different locations of central Italy: chemical profiling and gas chromatography-mass spectrometry (GC-MS) quantitative analysis of the allergenic esters benzyl cinnamate and benzyl salicylate.

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Propolis is a beehive product popular in natural medicine thanks to its noteworthy properties. Propolis is non-toxic but is responsible for allergic reactions in sensitive individuals. In this paper, we propose a new gas chromatography-mass spectrometry (GC-MS) analytical methodology for the

Allergic contact dermatitis from propolis.

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Propolis is commonly used in cosmetic and medicinal preparations because of its antiseptic, antiinflammatory, and anesthetic properties. Its therapeutic qualities have been well documented. However, 1.2 to 6.6% of patients who are patch-tested for dermatitis are sensitive to propolis. The main

Molecular docking predictions of fragrance binding to human leukocyte antigen molecules.

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Over 4000 small chemicals have been identified as allergens capable of inducing skin sensitization. Many sensitizers are hypothesized to act as haptens producing novel antigens, which can be presented to T cells by human leukocyte antigens (HLAs). Recent studies suggest that some

Correlation between experimental human and murine skin sensitization induction thresholds.

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Quantitative risk assessment for skin sensitization is directed towards the determination of levels of exposure to known sensitizing substances that will avoid the induction of contact allergy in humans. A key component of this work is the predictive identification of relative skin sensitizing

Sensitization to 26 fragrances to be labelled according to current European regulation. Results of the IVDK and review of the literature.

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To study the frequency of sensitization to 26 fragrances to be labelled according to current European regulation. During 4 periods of 6 months, from 1 January 2003 to 31 December 2004, 26 fragrances were patch tested additionally to the standard series in a total of 21 325 patients; the number of

Fragrance contact dermatitis: a worldwide multicenter investigation (Part I).

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OBJECTIVE The aim of this study was to determine the prevalence of responses to selected fragrance materials in patients with suspect fragrance allergy and to evaluate risk factors and associations with such responses. The validity of using specific fragrance ingredients versus a mixture of

Propolis from northern California and Oregon: chemical composition, botanical origin, and content of allergens.

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Propolis is a beehive product that bees manufacture by mixing their own wax with vegetable resins collected from different species of trees and bushes. The chemical composition of propolis is very variable because it depends on the flora locally available, and specimens from different geographical

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