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4.
Chem Res Toxicol ; 8(7): 911-6, 1995.
Artículo en Inglés | MEDLINE | ID: mdl-8555405

RESUMEN

During late 1989, the eosinophilia-myalgia syndrome (EMS) developed as an epidemic in the United States, with numerous additional cases reported in several other countries worldwide. Eight years earlier, a closely-related disease, the toxic oil syndrome (TOS), occurred in Spain as a massive food-borne epidemic. Although EMS was linked to the ingestion of tainted L-tryptophan, and TOS to aniline-denatured rapeseed oil, the etiologic agent(s) responsible for both diseases remains undetermined. Contaminants in these foodstuffs are believed to have triggered the diseases. Aniline contaminants, including 3-(phenylamino)-1,2-propanediol (PAP), have been reported in oil used by patients who developed TOS. A related aniline derivative, 3-(phenylamino)-L-alanine (PAA), was recently isolated from L-tryptophan associated with the onset of EMS. Here, we demonstrate the biotransformation of PAP into PAA by both rat hepatocytes and human liver tissue. The structural characterization of PAA was unequivocally determined using on-line HPLC coupled with atmospheric pressure chemical ionization tandem mass spectrometry (LC-APCI-MS/MS). This finding is the first reported chemical link between TOS and EMS and suggests that these two related diseases share a common etiology, namely, PAA.


Asunto(s)
Alanina/análogos & derivados , Brassica/química , Síndrome de Eosinofilia-Mialgia/etiología , Contaminación de Alimentos , Enfermedades Transmitidas por los Alimentos/etiología , Aceites de Plantas/envenenamiento , Glicoles de Propileno/toxicidad , Alanina/metabolismo , Alanina/toxicidad , Animales , Biotransformación , Cromatografía Líquida de Alta Presión , Brotes de Enfermedades , Ácidos Grasos Monoinsaturados , Enfermedades Transmitidas por los Alimentos/metabolismo , Humanos , Técnicas In Vitro , Hígado/citología , Hígado/metabolismo , Espectrometría de Masas , Peso Molecular , Aceites de Plantas/química , Glicoles de Propileno/metabolismo , Aceite de Brassica napus , Ratas , Ratas Sprague-Dawley , España , Espectrofotometría Ultravioleta , Síndrome , Triptófano/envenenamiento
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