Controlled Gastric Emptying. II. In Vitro Erosion and Gastric Residence Times of an Erodible Device in Beagle DogsSpringer Science and Business Media LLC - Tập 6 - Trang 506-509 - 1989
Robyn Cargill, Karen Engle, Colin R. Gardner, Patricia Porter, Randall V. Sparer, Joseph A. Fix
An erodible gastric retention device fabricated from various polymeric blends
was examined in vitro for its dissolution properties and in vivo in fasting dogs
for assessment of its gastric retention potential. Dissolution studies were
conducted with extruded rods of polymer blends to assess their potential as
candidates for the erodible component of a gastrically retained device. Based on
results ... hiện toàn bộ
Excipient Interaction with Cetylpyridinium Chloride Activity in Tablet Based LozengesSpringer Science and Business Media LLC - - 1996
R. Michael E. Richards, James Z. Xing, Kirsty M. B. Mackay
Purpose. The purpose of the investigation was to determine the effect of tablet
excipients on the activity of cetylpyridinium chloride (CPC) and the relative
interaction between excipients and CPC. Methods. An analytical assay was
developed to evaluate the interaction between CPC and the excipients. In vivo
activity was investigated using six volunteers by determining the reduction in
colony formi... hiện toàn bộ
Physiology-Based IVIVE Predictions of Tramadol from in Vitro Metabolism DataSpringer Science and Business Media LLC - Tập 32 - Trang 260-274 - 2014
Huybrecht T’jollyn, Jan Snoeys, Pieter Colin, Jan Van Bocxlaer, Pieter Annaert, Filip Cuyckens, An Vermeulen, Achiel Van Peer, Karel Allegaert, Geert Mannens, Koen Boussery
To predict the tramadol in vivo pharmacokinetics in adults by using in vitro
metabolism data and an in vitro-in vivo extrapolation (IVIVE)-linked
physiologically-based pharmacokinetic (PBPK) modeling and simulation approach
(Simcyp®). Tramadol metabolism data was gathered using metabolite formation in
human liver microsomes (HLM) and recombinant enzyme systems (rCYP). Hepatic
intrinsic clearance (... hiện toàn bộ
Diffusion of lonizable Solutes Across Planar Lipid Bilayer Membranes: Boundary-Layer pH Gradients and the Effect of BuffersSpringer Science and Business Media LLC - Tập 10 - Trang 1654-1661 - 1993
Tian-xiang Xiang, Bradley D. Anderson
The diffusion of weak acids or bases across planar lipid bilayer membranes
results in aqueous boundary layer pH gradients. If not properly taken into
account, such pH gradients will lead to errors in estimated membrane
permeability coefficients, P m. The role of the permeant concentration, the
buffer capacity, and the physicochemical properties of both permeant and buffer
on the magnitude and impa... hiện toàn bộ
Mechanistic Modeling of the Effect of Recombinant Human Hyaluronidase (rHuPH20) on Subcutaneous Delivery of Cetuximab in RatsSpringer Science and Business Media LLC - Tập 39 - Trang 1867-1880 - 2022
Xizhe Gao, Jongbong Lee, Kiran Deshpande, David W. Kang, Anas M. Fathallah, Leonid Kagan
To evaluate the duration of effect of rHuPH20 on SC absorption of cetuximab and
to develop a mechanistic pharmacokinetic model linking the kinetics of rHuPH20
action with hyaluronan (HA) homeostasis and absorption of cetuximab from the SC
space. Serum pharmacokinetics of cetuximab was evaluated after IV and SC dosing
at 0.4 and 10 mg/kg (control groups). In test groups, SC cetuximab was
administer... hiện toàn bộ
Proton-Cotransport of Pravastatin Across Intestinal Brush-Border MembraneSpringer Science and Business Media LLC - Tập 12 - Trang 1727-1732 - 1995
Ikumi Tamai, Hitomi Takanaga, Hiroshi Maeda, Takuo Ogihara, Masaru Yoneda, Akira Tsuji
Purpose. The purpose of the present study is to clarify the intestinal
brush-border transport mechanism of a weak organic acid, pravastatin, an HMG-CoA
reductase inhibitor. Methods. The transport of pravastatin was studied by using
intestinal brush-border membrane vesicles prepared from rabbit jejunum, and
uptake by the membrane vesicles was measured using rapid filtration technique.
Results. The ... hiện toàn bộ