p hydroxybenzoic acid/hypersensitivity

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Safety assessment of propyl paraben: a review of the published literature.

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Propyl paraben (CAS no. 94-13-3) is a stable, non-volatile compound used as an antimicrobial preservative in foods, drugs and cosmetics for over 50 years. It is an ester of p-hydroxybenzoate. Propyl paraben is readily absorbed via the gastrointestinal tract and dermis. It is hydrolyzed to

Prenylated Phenolics that Cause Contact Dermatitis from Glandular Trichomes of Turricula parryi.

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The principal phenolic constituents were isolated from the exudate of the glandular trichomes of TURRICULA PARRYI, a California shrub that causes severe contact dermatitis. The phenolic constituents consist of a complex mixture of methoxylated flavones and derivatives of both farnesylhydroquinone

Evaluation of the health aspects of methyl paraben: a review of the published literature.

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Methyl paraben (CAS No. 99-76-3) is a methyl ester of p-hydroxybenzoic acid. It is a stable, non-volatile compound used as an antimicrobial preservative in foods, drugs and cosmetics for over 50 years. Methyl paraben is readily and completely absorbed through the skin and from the gastrointestinal

Characterization of the Escherichia coli AaeAB efflux pump: a metabolic relief valve?

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Treatment of Escherichia coli with p-hydroxybenzoic acid (pHBA) resulted in upregulation of yhcP, encoding a protein of the putative efflux protein family. Also upregulated were the adjacent genes yhcQ, encoding a protein of the membrane fusion protein family, and yhcR, encoding a small protein

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