PMID- 27473014 OWN - NLM STAT- MEDLINE DCOM- 20170523 LR - 20181113 IS - 1096-0333 (Electronic) IS - 0041-008X (Print) IS - 0041-008X (Linking) VI - 307 DP - 2016 Sep 15 TI - A simple physiologically based pharmacokinetic model evaluating the effect of anti-nicotine antibodies on nicotine disposition in the brains of rats and humans. PG - 150-164 LID - S0041-008X(16)30209-5 [pii] LID - 10.1016/j.taap.2016.07.017 [doi] AB - Physiologically based pharmacokinetic (PBPK) modeling was applied to investigate the effects of anti-nicotine antibodies on nicotine disposition in the brains of rats and humans. Successful construction of both rat and human models was achieved by fitting model outputs to published nicotine concentration time course data in the blood and in the brain. Key parameters presumed to have the most effect on the ability of these antibodies to prevent nicotine from entering the brain were selected for investigation using the human model. These parameters, which included antibody affinity for nicotine, antibody cross-reactivity with cotinine, and antibody concentration, were broken down into different, clinically-derived in silico treatment levels and fed into the human PBPK model. Model predictions suggested that all three parameters, in addition to smoking status, have a sizable impact on anti-nicotine antibodies' ability to prevent nicotine from entering the brain and that the antibodies elicited by current human vaccines do not have sufficient binding characteristics to reduce brain nicotine concentrations. If the antibody binding characteristics achieved in animal studies can similarly be achieved in human studies, however, nicotine vaccine efficacy in terms of brain nicotine concentration reduction is predicted to meet threshold values for alleviating nicotine dependence. CI - Copyright (c) 2016 Elsevier Inc. All rights reserved. FAU - Saylor, Kyle AU - Saylor K AD - Department of Biological Systems Engineering, Virginia Tech, Seitz Hall, RM 210, 155 Ag Quad Lane, Blacksburg, VA 24061, USA. Electronic address: saylor@vt.edu. FAU - Zhang, Chenming AU - Zhang C AD - Department of Biological Systems Engineering, Virginia Tech, Seitz Hall, RM 210, 155 Ag Quad Lane, Blacksburg, VA 24061, USA. Electronic address: chzhang2@vt.edu. LA - eng GR - U01 DA036850/DA/NIDA NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20160726 PL - United States TA - Toxicol Appl Pharmacol JT - Toxicology and applied pharmacology JID - 0416575 RN - 0 (Antibodies) RN - 0 (Vaccines) RN - 6M3C89ZY6R (Nicotine) RN - K5161X06LL (Cotinine) SB - IM MH - Animals MH - Antibodies/*blood MH - Brain/*metabolism MH - Cotinine/immunology MH - Humans MH - *Models, Biological MH - Nicotine/blood/*immunology/*pharmacokinetics MH - Rats MH - Smoking/metabolism MH - Tissue Distribution MH - *Vaccines PMC - PMC5344185 MID - NIHMS850777 OTO - NOTNLM OT - Anti-nicotine antibodies OT - Nicotine dependence OT - Nicotine disposition OT - Nicotine vaccine OT - PBPK OT - Physiologically based pharmacokinetic model COIS- Conflict of interest statement The authors declare that they have no conflicting interests. EDAT- 2016/07/31 06:00 MHDA- 2017/05/24 06:00 PMCR- 2017/09/15 CRDT- 2016/07/31 06:00 PHST- 2016/05/09 00:00 [received] PHST- 2016/07/22 00:00 [revised] PHST- 2016/07/25 00:00 [accepted] PHST- 2016/07/31 06:00 [entrez] PHST- 2016/07/31 06:00 [pubmed] PHST- 2017/05/24 06:00 [medline] PHST- 2017/09/15 00:00 [pmc-release] AID - S0041-008X(16)30209-5 [pii] AID - 10.1016/j.taap.2016.07.017 [doi] PST - ppublish SO - Toxicol Appl Pharmacol. 2016 Sep 15;307:150-164. doi: 10.1016/j.taap.2016.07.017. Epub 2016 Jul 26.