Britt-Marie Fihn

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Our knowledge of the epithelial permeability of different sections of the colon as well as of the surface and crypt epithelium is patchy and contradictory. Therefore, movement of radiolabelled urea, mannitol and Cr-EDTA between the lumen and the plasma of rats was studied, and expressed as clearance. In experiments studying movement from the lumen to the(More)
AIM To test the hypothesis that nicotinic receptor mechanisms mediate the effects of bile acids on the colonic mucosa. METHODS The epithelial transport response to 4 mm deoxycholic acid (DCA) was studied in vitro and in vivo, in rat colon. In vitro, epithelial resistance was measured by square pulse analysis, and net membrane current was calculated from(More)
The effect of Pgp induction in rats by pregnenolone 16α-carbonitrile (PCN) (3 days, 35 mg/kg/d, p.o.) on digoxin pharmacokinetics and intestinal transport has been assessed. After intravenous or oral digoxin dosing the arterial and hepatic portal vein (oral) AUC(0-24h) were significantly reduced by PCN pre-treatment. Biliary digoxin clearance increased(More)
Investigation of pharmacokinetic/pharmacodynamic (PK/PD) relationships for inhaled drugs is challenging because of the limited possibilities of measuring tissue exposure and target engagement in the lung. The aim of this study was to develop a methodology for measuring receptor occupancy in vivo in the rat for the glucocorticoid receptor (GR) to allow more(More)
Wei Zheng, Roscoe Warner, Roger Ruggeri, Chunyan Su, Christian Cortes, Athanasia Skoura, Jessica Ward, Kay Ahn, Amit Kalgutkar, Dexue Sun, Tristan S. Maurer, Paul D. Bonin, Carlin Okerberg, Walter Bobrowski, Thomas Kawabe, Yanwei Zhang, Timothy Coskran, Sammy Bell, Bhupesh Kapoor, Kent Johnson, and Leonard Buckbinder Beneficial Effect of the Soluble(More)
1. The SureTran matrix is a novel method facilitating short-term maintenance of fresh primary hepatocyte cellular function and offers the potential use of primary cells "as fresh" for several days post isolation. In the study presented, the maintenance of several key phase I and II drug metabolizing enzyme and drug transporter activities is demonstrated(More)
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