نتایج جستجو برای: p gp inhibition

تعداد نتایج: 1574865  

Journal: :Molecules 2018
Tae Hwan Kim Soyoung Shin Sun Dong Yoo Beom Soo Shin

Pungent spice constituents such as piperine, capsaicin and [6]-gingerol consumed via daily diet or traditional Chinese medicine, have been reported to possess various pharmacological activities. These dietary phytochemicals have also been reported to inhibit P-glycoprotein (P-gp) in vitro and act as an alternative to synthetic P-gp modulators. However, the in vivo effects on P-gp inhibition are...

Journal: :JAMA 2003
A Michael Lincoff John A Bittl Robert A Harrington Frederick Feit Neal S Kleiman J Daniel Jackman Ian J Sarembock David J Cohen Douglas Spriggs Ramin Ebrahimi Gadi Keren Jeffrey Carr Eric A Cohen Amadeo Betriu Walter Desmet Dean J Kereiakes Wolfgang Rutsch Robert G Wilcox Pim J de Feyter Alec Vahanian Eric J Topol

CONTEXT The direct thrombin inhibitor bivalirudin has been associated with better efficacy and less bleeding than heparin during coronary balloon angioplasty but has not been widely tested during contemporary percutaneous coronary intervention (PCI). OBJECTIVE To determine the efficacy of bivalirudin, with glycoprotein IIb/IIIa (Gp IIb/IIIa) inhibition on a provisional basis for complications...

Journal: :The Journal of pharmacology and experimental therapeutics 2006
Hao-Jie Zhu Jun-Sheng Wang John S Markowitz Jennifer L Donovan Bryan B Gibson Holly A Gefroh C Lindsay Devane

The ATP-dependent drug efflux transporter P-glycoprotein (P-gp) plays a significant role in the absorption and disposition of many compounds. The purpose of this study was to investigate the possible interaction of P-gp with each of four major marijuana constituents: Delta(9)-tetrahydrocannabinol (THC), 11-nor-Delta(9)-tetrahydrocannabinol-carboxylic acid (THC-COOH), cannabinol (CBN), and canna...

Journal: :Molecular pharmacology 2000
G K Chen N J Lacayo G E Durán D Cohen B I Sikic

In this study, we further characterize a mutant P-glycoprotein (P-gp) that has a deletion of Phe(335) and is resistant to inhibition by cyclosporins. Photoaffinity labeling with [(3)H]cyclosporine and [(3)H]azidopine revealed markedly decreased binding to the mutant P-gp compared with wild-type P-gp. Expression of the mutant P-gp in multidrug-resistant variant cell line MES-SA/DxP (DxP) cells w...

2014
Jinfeng Hou Qian Liu Yingfei Li Hua Sun Jinlan Zhang

FLZ (N-[2-(4-hydroxy-phenyl)-ethyl]-2-(2,5-dimethoxy-phenyl)-3-(3-methoxy-4-hydroxy-phenyl)-acrylamide) is a novel synthetic squamosamide derivative and a potential anti-Parkinson's disease (PD) agent. The objective of the present study was to investigate the penetration of free FLZ across the BBB and the effects of P-gp inhibition on FLZ transport in normal and 6-hydroxydopamine (6-OHDA) induc...

2013
Jennifer Pasquier Damien Rioult Nadine Abu-Kaoud Sabine Marie Arash Rafii Bella S. Guerrouahen Frank Le Foll

BACKGROUND P-gp expression has been linked to the efflux of chemotherapeutic drugs in human cancers leading to multidrug resistance. Fluorescence techniques have been widely applied to measure the P-gp activity. In this paper, there is a comparison between the advantages of two fluorescence approaches of commonly available and affordable instruments: the microplate reader (MPR) and the flow cyt...

Journal: :Molecular pharmaceutics 2011
Lei Chen Youyong Li Qing Zhao Hui Peng Tingjun Hou

P-Glycoprotein (P-gp), an efflux transporter, plays a crucial role in drug pharmacokinetic properties (ADME), and is critical for multidrug resistance (MDR) by mediating the active transport of anticancer drugs from the intracellular to the extracellular compartment. Here we reported an original database of 1273 molecules that are categorized into P-gp inhibitors and noninhibitors. The impact o...

Journal: :Circulation 2000
M Merten P Thiagarajan

BACKGROUND P-selectin mediates rolling of platelets and leukocytes on activated endothelial cells. After platelet activation, P-selectin is translocated from intracellular granules to the external membrane, whereas fibrinogen aggregates platelets by bridging glycoprotein (GP) IIb/IIIa between adjacent platelets. METHODS AND RESULTS In this study, we define a novel role for P-selectin in plate...

2013
Wataru Kishimoto Naoki Ishiguro Eva Ludwig-Schwellinger Thomas Ebner Olaf Schaefer

Dabigatran etexilate, an oral, reversible, competitive, and direct thrombin inhibitor, is an in vitro and in vivo substrate of Pglycoprotein (P-gp). Dabigatran etexilate was proposed as an in vivo probe substrate for intestinal P-gp inhibition in a recent guidance on drug-drug interactions (DDI) from the European Medicines Agency (EMA) and the Food and Drug Administration (FDA). We conducted tr...

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