User profiles for Ayman El-Kattan

AYMAN EL-KATTAN

Pfizer
Verified email at pfizer.com
Cited by 5576

The road map to oral bioavailability: an industrial perspective

…, N Surendran, CL Stoner, A El-Kattan - Expert opinion on …, 2006 - Taylor & Francis
Optimisation of oral bioavailability is a continuing challenge for the pharmaceutical and
biotechnology industries. The number of potential drug candidates requiring invivo evaluation …

Enhancement of transdermal drug delivery: chemical and physical approaches

CS Asbill, AF El-Kattan… - Critical Reviews™ in …, 2000 - dl.begellhouse.com
Transdermal drug delivery has been intensively studied over the last two decades because
of the many advantages offered by this route of administration. However, the number of …

Impact of physiological, physicochemical and biopharmaceutical factors in absorption and metabolism mechanisms on the drug oral bioavailability of rats and humans

…, CM Loi, J Brodfuehrer, A El-Kattan - Expert opinion on drug …, 2007 - Taylor & Francis
The onset, intensity and duration of therapeutic response to a compound depend on the intrinsic
pharmacological activity of the drug and pharmacokinetic factors related to its absorption…

Delineating the role of cooperativity in the design of potent PROTACs for BTK

…, S Luthra, JC Shah, A El-Kattan… - Proceedings of the …, 2018 - National Acad Sciences
Proteolysis targeting chimeras (PROTACs) are heterobifunctional small molecules that
simultaneously bind to a target protein and an E3 ligase, thereby leading to ubiquitination and …

Development of a new permeability assay using low‐efflux MDCKII cells

…, S Kempshall, K Fenner, AF Elkattan… - Journal of …, 2011 - Elsevier
Permeability is an important property of drug candidates. The Madin–Darby canine kidney
cell line (MDCK) permeability assay is widely used and the primary concern of using MDCK …

Physicochemical space for optimum oral bioavailability: contribution of human intestinal absorption and first-pass elimination

…, G Chang, SJ Steyn, A El-Kattan… - Journal of medicinal …, 2010 - ACS Publications
Oral bioavailability (F) is a product of fraction absorbed (Fa), fraction escaping gut-wall
elimination (Fg), and fraction escaping hepatic elimination (Fh). In this study, using a database …

Predicting clearance mechanism in drug discovery: extended clearance classification system (ECCS)

MV Varma, SJ Steyn, C Allerton, AF El-Kattan - Pharmaceutical research, 2015 - Springer
Early prediction of clearance mechanisms allows for the rapid progression of drug discovery
and development programs, and facilitates risk assessment of the pharmacokinetic …

Mechanistic pharmacokinetic modeling for the prediction of transporter-mediated disposition in humans from sandwich culture human hepatocyte data

…, E Kimoto, S Kempshall, SC Tate, A El-Kattan… - Drug Metabolism and …, 2012 - ASPET
With efforts to reduce cytochrome P450-mediated clearance (CL) during the early stages of
drug discovery, transporter-mediated CL mechanisms are becoming more prevalent. …

Physicochemical determinants of human renal clearance

…, J Chupka, HR Miller, A El-Kattan - Journal of medicinal …, 2009 - ACS Publications
Kidney plays an important role in the elimination of drugs, especially with low or negligible
hepatic clearance. An analysis of the interrelation of physicochemical properties and the …

The effects of terpene enhancers on the percutaneous permeation of drugs with different lipophilicities

AF El-Kattan, CS Asbill, N Kim, BB Michniak - International Journal of …, 2001 - Elsevier
Four model drugs were selected based on their lipophilicity denoted as log P (nicardipine
hydrochloride log P −0.99±0.1, hydrocortisone log P 1.43±0.47, carbamazepine log P 2.67±…