Joya, Xavier, Pujadas, Mitona, Falcon, Maria, Civit, Ester, Garcia-Algar, Oscar, Vall, Oriol, Pichini, Simona, Luna, Aurelio, and de la Torre, Rafael
To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.forsciint.2009.12.044 Byline: Xavier Joya (a)(b)(c), Mitona Pujadas (d)(e), Maria Falcon (f), Ester Civit (d), Oscar Garcia-Algar (a)(c)(g), Oriol Vall (a)(c)(g), Simona Pichini (h), Aurelio Luna (f), Rafael de la Torre (d)(e)(i) Keywords: Placenta; Prenatal exposure; Drugs of abuse; Interruption of pregnancy; Gas chromatography-mass spectrometry Abbreviations: MDMA, 3,4-methylenedioxymethamphetamine; AP, amphetamine; BEC, benzoylecgonine; BUP, buprenorphine; COC, cocaine; COT, cotinine; [DELTA]-9-THC-COOH, 11-nor-9-carboxy-delta-9-tetrahydrocannabinol; EI, electron-impact; FAEEs, fatty acid ethyl esters; GC/MS, gas chromatography-mass spectrometry; ISTDs, internal standards; LOD, limit of detection; LOQ, limit of quantification; LC/MS/MS, liquid chromatography-tandem mass spectrometry; MA, methamphetamine; MOR, morphine; NIC, nicotine; MSTFA, N-Methyl-N-(trimethylsilyl)tri-fluoroacetamide; NBUP-Gluc, norbuprenorphine glucuronide; QC, quality control; SIM, selected-ion-monitoring; SPE, solid phase extraction; SD, standard deviation Abstract: We describe the development and validation of a method for the quantification of drugs of abuse, using gas chromatography-mass spectrometry (GC/MS), in human placenta. Concentration ranges covered were 5-500ng/g for amphetamine, methamphetamine, MDMA, methadone, cocaine, benzoylecgonine, cocaethylene, morphine, 11-nor-9-carboxy-delta-9-tetrahydrocannabinol, nicotine, and cotinine. Intra-assay and inter-assay imprecisions were less than 15.7% for lower quality control samples and less than 14.9% for medium and high quality control samples. Recovery range was 36.2-83.7%. Placenta samples were kept at -80[degrees]C until analysis; analytes were stable after three freeze-thaw cycles (samples stored at -20[degrees]C). This accurate and precise assay has sufficient sensitivity and specificity for the analysis of specimens collected from women who voluntarily terminated their pregnancy at 12th week of gestation. The method has proven to be robust and accurate for the quantification of the principal recreational drugs of abuse in this period of the prenatal life. This is the first report that highlights the presence of drugs of abuse during the first trimester of gestation. Author Affiliation: (a) Unitat de Recerca Infancia i Entorn (URIE), Institut Municipal d'Investigacio Medica - Hospital del Mar, Barcelona, Spain (b) Departament de Bioquimica i Biologia Molecular, Universitat AutA[sup.2]noma de Barcelona, Barcelona, Spain (c) Red de Salut Materno-Infantil y del Desarrollo (SAMID), Instituto Carlos III, Spain (d) Grup de Recerca en Farmacologia Humana i Neurociencies, Institut Municipal d'Investigacio Medica-Hospital del Mar, Barcelona, Spain (e) CIBER Fisiopatologia de la Obesidad y Nutricion, Instituto Carlos III, Spain (f) Departamento de Medicina Forense, Universidad de Murcia, Murcia, Spain (g) Departament de Pediatria, Obstetricia i Ginecologia i Medicina Preventiva, Universitat AutA[sup.2]noma de Barcelona, Barcelona, Spain (h) Department of Therapeutic Research and Medicines Evaluation, Istituto Superiore di Sanita, Rome, Italy (i) Departament de Ciencies Experimentals i de la Salut, Universitat Pompeu Fabra, Barcelona, Spain Article History: Received 18 July 2009; Accepted 15 September 2009