PMID- 21944846 OWN - NLM STAT- MEDLINE DCOM- 20111229 LR - 20131121 IS - 1873-3778 (Electronic) IS - 0021-9673 (Linking) VI - 1218 IP - 43 DP - 2011 Oct 28 TI - Computational approaches to design a molecular imprinted polymer for high selective extraction of 3,4-methylenedioxymethamphetamine from plasma. PG - 7739-47 LID - 10.1016/j.chroma.2011.08.020 [doi] AB - In this work, a molecular imprinted polymer (MIP) as a novel selective sorbent for extraction of 3,4-methylenedioxymethamphetamine (MDMA) from plasma samples was prepared. For selecting a more suitable monomer and polymerization solvent a methodology based on density functional theory calculations was developed. This computational design is based on the comparison of stabilization energies of the prepolymerization adducts between the template and different functional monomers. The effect of polymerization solvent was studied using of polarizable continuum model (PCM). The computational results revealed that the best suitable monomer and polymerization solvent for preparation of MIP is methacrylic acid (MAA) and chloroform, respectively. Also, another MIP with methacrylic acid (MAA) as monomer in acetonitrile was prepared to evaluate the validity of polarizable continuum model for selection of polymerization solvent. The performance of each polymer was evaluated by using Langmuir-Freundlich (LF) isotherm. As it is expected, the best results were obtained for the MIP which was prepared in chloroform. This MIP was used as a selective sorbent in solid-phase extraction coupled with high performance liquid chromatography-ultraviolet detector (MISPE-HPLC-UV) for rapid screening of MDMA in human plasma. For the proposed MISPE-HPLC-UV method, the linearity between responses (peak areas) and concentrations was found over the range of 3.6-11500 ng mL(-1) with a linear regression coefficient of 0.998. The limit of detection (LOD) and quantification (LOQ) in plasma were 1.0 and 3.3 ng mL(-1), respectively. The %RSD (n=5) data for five plasma samples containing 15, 25, 50, and 100 ng mL(-1) of MDMA were 1.02, 1.12, 2.05, 2.54, respectively. CI - Copyright (c) 2011 Elsevier B.V. All rights reserved. FAU - Ahmadi, Farhad AU - Ahmadi F AD - Department of Medicinal Chemistry, Faculty of Pharmacy, Kermanshah University of Medical Sciences, Bagh Abrisham, Kermanshah, Iran. fahmadi@kums.ac.ir FAU - Ahmadi, Jafar AU - Ahmadi J FAU - Rahimi-Nasrabadi, Mehdi AU - Rahimi-Nasrabadi M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110812 PL - Netherlands TA - J Chromatogr A JT - Journal of chromatography. A JID - 9318488 RN - 0 (Acetonitriles) RN - 0 (Methacrylates) RN - 1CS02G8656 (methacrylic acid) RN - 7V31YC746X (Chloroform) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) RN - Z072SB282N (acetonitrile) SB - IM MH - Acetonitriles/chemistry MH - Chloroform/*chemistry MH - Chromatography, High Pressure Liquid MH - *Computer-Aided Design MH - Humans MH - Hydrogen-Ion Concentration MH - Linear Models MH - Methacrylates/*chemistry MH - Models, Chemical MH - Models, Molecular MH - Molecular Imprinting/*methods MH - N-Methyl-3,4-methylenedioxyamphetamine/*blood/isolation & purification MH - Reproducibility of Results MH - Sensitivity and Specificity EDAT- 2011/09/29 06:00 MHDA- 2011/12/30 06:00 CRDT- 2011/09/28 06:00 PHST- 2011/04/03 00:00 [received] PHST- 2011/06/29 00:00 [revised] PHST- 2011/08/07 00:00 [accepted] PHST- 2011/09/28 06:00 [entrez] PHST- 2011/09/29 06:00 [pubmed] PHST- 2011/12/30 06:00 [medline] AID - S0021-9673(11)01185-X [pii] AID - 10.1016/j.chroma.2011.08.020 [doi] PST - ppublish SO - J Chromatogr A. 2011 Oct 28;1218(43):7739-47. doi: 10.1016/j.chroma.2011.08.020. Epub 2011 Aug 12.