作者: Alex Yu , Trachette Jackson , Yasuhiro Tsume , Mark Koenigsknecht , Jeffrey Wysocki
DOI: 10.1208/S12248-017-0145-X
关键词:
摘要: Gastrointestinal (GI) fluid volume and its dynamic change are integral to study drug disintegration, dissolution, transit, absorption. However, key questions regarding the local absorption, secretion, transit remain unanswered. The compartment absorption (DFCAT) model is proposed estimate in vivo GI transport based on magnetic resonance imaging (MRI) quantified volume. was validated using concentration of phenol red human tract, which directly measured by intubation after oral dosing non-absorbable red. ranged from 0.05 168 μg/mL (stomach), 563 μg/mL (duodenum), 202 μg/mL (proximal jejunum), 478 μg/mL (distal jejunum). DFCAT characterized observed MRI changes 275 46.5 mL stomach (from 0 30 min) with mucus layer 40 mL. volumes 30 small intestine compartments were a max 14.98 mL min 0.26 mL (0–120 min) 5 mL per compartment. Regional over 120 min 5.6 20.38 mL proximal intestine, 36.4 44.08 mL distal 42 64.46 mL total intestine. can be applied predict dissolution tract future improvements.