PMID- 32649984 OWN - NLM STAT- MEDLINE DCOM- 20210621 LR - 20210621 IS - 1879-0720 (Electronic) IS - 0928-0987 (Linking) VI - 152 DP - 2020 Sep 1 TI - Gastrointestinal diseases and their impact on drug solubility: Crohn's disease. PG - 105459 LID - S0928-0987(20)30248-7 [pii] LID - 10.1016/j.ejps.2020.105459 [doi] AB - In order to investigate differences in drug solubilisation and dissolution in luminal fluids of Crohn's disease (CD) patients and healthy subjects, biorelevant media representative of CD patients were developed using information from literature and a Design of Experiment (DoE) approach. The CD media were characterised in terms of surface tension, osmolality, dynamic viscosity and buffer capacity and compared to healthy biorelevant media. To identify which drug characteristics are likely to present a high risk of altered drug solubility in CD, the solubility of six drugs was assessed in CD media and solubility differences were related to drug properties. Identified differences in CD patients compared to healthy subjects were a reduced concentration of bile salts, a higher gastric pH and a higher colonic osmolality. Differences in the properties of CD compared to healthy biorelevant media were mainly observed for surface tension and osmolality. Drug solubility of ionisable compounds was altered in gastric CD media compared to healthy biorelevant media. For drugs with moderate to high lipophilicity, a high risk of altered drug solubilisation in CD is expected, since a significant negative effect of log P and a positive effect of bile salts on drug solubility in colonic and fasted state intestinal CD media was observed. Simulating the conditions in CD patients in vitro offers the possibility to identify relevant differences in drug solubilisation without conducting expensive clinical trials. CI - Copyright (c) 2020 Elsevier B.V. All rights reserved. FAU - Effinger, Angela AU - Effinger A AD - Department of Pharmacy and Pharmacology, University of Bath, Bath, UK. FAU - O'Driscoll, Caitriona M AU - O'Driscoll CM AD - School of Pharmacy, University College Cork, Cork, Ireland. FAU - McAllister, Mark AU - McAllister M AD - Pfizer Drug Product Design, Sandwich, UK. FAU - Fotaki, Nikoletta AU - Fotaki N AD - Department of Pharmacy and Pharmacology, University of Bath, Bath, UK. Electronic address: n.fotaki@bath.ac.uk. LA - eng PT - Journal Article DEP - 20200707 PL - Netherlands TA - Eur J Pharm Sci JT - European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences JID - 9317982 RN - 0 (Pharmaceutical Preparations) SB - IM MH - *Crohn Disease/drug therapy MH - Humans MH - Hydrogen-Ion Concentration MH - Osmolar Concentration MH - *Pharmaceutical Preparations MH - Solubility OTO - NOTNLM OT - Biorelevant media OT - Crohn's disease OT - Gastrointestinal diseases OT - Inflammatory bowel disease OT - Physicochemical properties OT - Solubility COIS- Declaration of Competing Interest None. EDAT- 2020/07/11 06:00 MHDA- 2021/06/22 06:00 CRDT- 2020/07/11 06:00 PHST- 2020/03/27 00:00 [received] PHST- 2020/06/12 00:00 [revised] PHST- 2020/07/05 00:00 [accepted] PHST- 2020/07/11 06:00 [pubmed] PHST- 2021/06/22 06:00 [medline] PHST- 2020/07/11 06:00 [entrez] AID - S0928-0987(20)30248-7 [pii] AID - 10.1016/j.ejps.2020.105459 [doi] PST - ppublish SO - Eur J Pharm Sci. 2020 Sep 1;152:105459. doi: 10.1016/j.ejps.2020.105459. Epub 2020 Jul 7.