PMID- 21723208 OWN - NLM STAT- MEDLINE DCOM- 20111010 LR - 20240321 IS - 1873-376X (Electronic) IS - 1570-0232 (Print) IS - 1570-0232 (Linking) VI - 879 IP - 23 DP - 2011 Aug 1 TI - Determination of hexamethylene bisacetamide, an antineoplastic compound, in mouse and human plasma by LC-MS/MS. PG - 2206-12 LID - 10.1016/j.jchromb.2011.06.002 [doi] AB - Hexamethylene bisacetamide (HMBA) is a polar compound which has recently been discovered to have antineoplastic activity by up-regulating the expression of an endogenous antiproliferative breast cancer protein, HEXIM1 (hexamethylene bisacetamide inducible protein 1) in vivo. HMBA has been shown in the past to induce terminal differentiation in multiple leukemia types at a concentration of 2-5mM, but its phase I and II clinical trials were largely unsuccessful due to serious side effects (notably, thrombocytopenia) with dose escalation. In this work, a sensitive and simple LC-MS/MS method for direct determination of HMBA in mouse and human plasma is described. Plasma samples were prepared by deproteinization with acetonitrile. Separation was achieved on a Waters Atlantis((R)) T3 (2.1 mm x 50 mm, 3 mum) column with retention times of 2.2 and 3.7 min for HMBA and 7MBA (internal standard), respectively. The quantitation was carried out by tandem mass spectrometry using positive MRM mode. The linear range of the method was 0.500-100 ng/mL in both mouse and human plasma with injection volume of 5 muL. This method has been validated in accordance with the US Food and Drug Administration (FDA) guidelines for bioanalytical method development and applied to the determination of HMBA concentrations in FVB mice over time after a single dose of HMBA in saline (0.9% NaCl) at 10mg/kg. CI - Copyright (c) 2011 Elsevier B.V. All rights reserved. FAU - Smith, Kerri M AU - Smith KM AD - Department of Chemistry, Cleveland State University, 2121 Euclid Avenue, Cleveland, OH 44115, United States. FAU - Ketchart, Wannarasmi AU - Ketchart W FAU - Zhou, Xiang AU - Zhou X FAU - Montano, Monica M AU - Montano MM FAU - Xu, Yan AU - Xu Y LA - eng GR - R01 CA092440/CA/NCI NIH HHS/United States GR - CA92440/CA/NCI NIH HHS/United States PT - Evaluation Study PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20110613 PL - Netherlands TA - J Chromatogr B Analyt Technol Biomed Life Sci JT - Journal of chromatography. B, Analytical technologies in the biomedical and life sciences JID - 101139554 RN - 0 (Acetamides) RN - 0 (Antineoplastic Agents) RN - LA133J59VU (hexamethylene bisacetamide) SB - IM MH - Acetamides/*blood MH - Animals MH - Antineoplastic Agents/*blood MH - Chromatography, Liquid/*methods MH - Humans MH - Male MH - Mice MH - Tandem Mass Spectrometry/*methods PMC - PMC4068250 MID - NIHMS306962 EDAT- 2011/07/05 06:00 MHDA- 2011/10/11 06:00 PMCR- 2014/06/24 CRDT- 2011/07/05 06:00 PHST- 2010/11/18 00:00 [received] PHST- 2011/06/03 00:00 [revised] PHST- 2011/06/04 00:00 [accepted] PHST- 2011/07/05 06:00 [entrez] PHST- 2011/07/05 06:00 [pubmed] PHST- 2011/10/11 06:00 [medline] PHST- 2014/06/24 00:00 [pmc-release] AID - S1570-0232(11)00376-X [pii] AID - 10.1016/j.jchromb.2011.06.002 [doi] PST - ppublish SO - J Chromatogr B Analyt Technol Biomed Life Sci. 2011 Aug 1;879(23):2206-12. doi: 10.1016/j.jchromb.2011.06.002. Epub 2011 Jun 13.