PMID- 27557133 OWN - NLM STAT- MEDLINE DCOM- 20180205 LR - 20191210 IS - 1097-0231 (Electronic) IS - 0951-4198 (Print) IS - 0951-4198 (Linking) VI - 30 IP - 21 DP - 2016 Nov 15 TI - Nontargeted analysis of the urine nonpolar sulfateome: a pathway to the nonpolar xenobiotic exposome. PG - 2341-2350 LID - 10.1002/rcm.7726 [doi] AB - RATIONALE: Testing the urine nonpolar sulfateome can enable discovery of xenobiotics that are most likely to be bioactive. This is based on the fact that nonpolar xenobiotics are more likely to enter cells where they tend to undergo metabolism, in part, to sulfates that are then largely excreted into the urine. METHODS: The following sequence of steps, with conditions that achieve high reproducibility, was applied to large human urine samples: (1) competitive nonpolar extraction with a porous extraction paddle; (2) weak anion-exchange extraction with strong organic washing; and (3) ultrahigh-performance liquid chromatography (UHPLC)/negative ion matrix-assisted laser desorption ionization tandem time-of-flight mass spectrometery (MALDI-TOF/TOF-MS) with recording of ions with signal-to-noise (S/N) >/= 20 that yielded M-1-80 (loss of SO(3) ) or m/z 97 (HSO(4)(-) ) upon fragmentation. RESULTS: From a collection of urine samples from six pregnant women, the masses of 1129 putative sulfates were measured. Three lists of candidate compounds (preliminary hits) from these masses were formed by searching METLIN, especially via MATLAB, yielding putative xenobiotic contaminants (35 compounds), steroids (122), and flavonoids (1582). CONCLUSIONS: A new way to reveal some of the nonpolar xenobiotic exposome has been developed that applies to urine samples. The value of the method is to suggest xenobiotics for subsequent targeted analysis in the population of people under study, in order to relate the environment to health and disease. Copyright (c) 2016 John Wiley & Sons, Ltd. CI - Copyright (c) 2016 John Wiley & Sons, Ltd. FAU - Yao, Yuanyuan AU - Yao Y AD - Northeastern University, Department of Pharmaceutical Sciences and Barnett Institute, Bouve College, 360, Huntington, Ave., Boston, MA, 02115, USA. FAU - Wang, Poguang AU - Wang P AD - Northeastern University, Department of Pharmaceutical Sciences and Barnett Institute, Bouve College, 360, Huntington, Ave., Boston, MA, 02115, USA. FAU - Shao, Gang AU - Shao G AD - Northeastern University, Department of Pharmaceutical Sciences and Barnett Institute, Bouve College, 360, Huntington, Ave., Boston, MA, 02115, USA. FAU - Del Toro, Liza V Anzalota AU - Del Toro LV AD - University of Puerto Rico, Medical Sciences Campus, San Juan, Puerto Rico. FAU - Codero, Jose AU - Codero J AD - University of Puerto Rico, Medical Sciences Campus, San Juan, Puerto Rico. FAU - Giese, Roger W AU - Giese RW AD - Northeastern University, Department of Pharmaceutical Sciences and Barnett Institute, Bouve College, 360, Huntington, Ave., Boston, MA, 02115, USA. r.giese@neu.edu. LA - eng GR - P42 ES017198/ES/NIEHS NIH HHS/United States PT - Evaluation Study PT - Journal Article PL - England TA - Rapid Commun Mass Spectrom JT - Rapid communications in mass spectrometry : RCM JID - 8802365 RN - 0 (Sulfates) RN - 0 (Xenobiotics) SB - IM MH - Chromatography, High Pressure Liquid/*methods MH - Female MH - Humans MH - Pregnancy MH - Sulfates/chemistry/*urine MH - Tandem Mass Spectrometry/*methods MH - Xenobiotics/chemistry/*urine PMC - PMC5070653 MID - NIHMS817879 EDAT- 2016/08/25 06:00 MHDA- 2018/02/06 06:00 PMCR- 2017/11/15 CRDT- 2016/08/25 06:00 PHST- 2016/06/15 00:00 [received] PHST- 2016/08/09 00:00 [revised] PHST- 2016/08/20 00:00 [accepted] PHST- 2016/08/25 06:00 [pubmed] PHST- 2018/02/06 06:00 [medline] PHST- 2016/08/25 06:00 [entrez] PHST- 2017/11/15 00:00 [pmc-release] AID - 10.1002/rcm.7726 [doi] PST - ppublish SO - Rapid Commun Mass Spectrom. 2016 Nov 15;30(21):2341-2350. doi: 10.1002/rcm.7726.