State-of-the-art tools for computational site of metabolism predictions: comparative analysis, mechanistical insights, and future applications

L Afzelius, C Hasselgren Arnby, A Broo… - Drug metabolism …, 2007 - Taylor & Francis
In drug design, it is crucial to have reliable information on how a chemical entity behaves in
the presence of metabolizing enzymes. This requires substantial experimental efforts. …

Competitive CYP2C9 inhibitors: enzyme inhibition studies, protein homology modeling, and three-dimensional quantitative structure-activity relationship analysis

L Afzelius, I Zamora, M Ridderström, TB Andersson… - Molecular …, 2001 - ASPET
This study describes the generation of a three-dimensional quantitative structure activity
relationship (3D-QSAR) model for 29 structurally diverse, competitive CYP2C9 inhibitors …

Comparison of methods for the prediction of the metabolic sites for CYP3A4-mediated metabolic reactions

D Zhou, L Afzelius, SW Grimm, TB Andersson… - Drug metabolism and …, 2006 - ASPET
Predictions of the metabolic sites for new chemical entities, synthesized or only virtual, are
important in the early phase of drug discovery to guide chemistry efforts in the synthesis of …

Predicting drug metabolism: a site of metabolism prediction tool applied to the cytochrome P450 2C9

I Zamora, L Afzelius, G Cruciani - Journal of medicinal chemistry, 2003 - ACS Publications
The aim of the present study is to develop a method for predicting the site at which molecules
will be metabolized by CYP 2C9 (cytochrome P450 2C9) using a previously reported …

Evaluation of the human prediction of clearance from hepatocyte and microsome intrinsic clearance for 52 drug compounds

AK Sohlenius-Sternbeck, L Afzelius, P Prusis… - Xenobiotica, 2010 - Taylor & Francis
We compare three different approaches to scale clearance (CL) from human hepatocyte and
microsome CL int (intrinsic CL) for 52 drug compounds. By using the well-stirred model with …

Discriminant and quantitative PLS analysis of competitive CYP2C9 inhibitors versus non-inhibitors using alignment independent GRIND descriptors

L Afzelius, CM Masimirembwa, A Karlén… - Journal of computer …, 2002 - Springer
This study describes the use of alignment-independent descriptors for obtaining qualitative
and quantitative predictions of the competitive inhibition of CYP2C9 on a serie of highly …

Practical use of the regression offset approach for the prediction of in vivo intrinsic clearance from hepatocytes

…, D Projean, E Floby, J Bylund, L Afzelius - Xenobiotica, 2012 - Taylor & Francis
Systematic under-prediction of clearance is frequently associated with in vitro kinetic data
when extrapolated using physiological scaling factors, appropriate binding parameters and the …

Functional ATP-binding cassette drug efflux transporters in isolated human and rat hepatocytes significantly affect assessment of drug disposition

…, J Lööf, J Johansson, J Hoogstraate, L Afzelius… - Drug Metabolism and …, 2014 - ASPET
Freshly isolated hepatocytes are considered the gold standard for in vitro studies of hepatic
drug disposition. To ensure a reliable supply of cells, cryopreserved human hepatocytes are …

Cytochrome p450 inhibitory properties of common efflux transporter inhibitors

…, J Johansson, J Hoogstraate, L Afzelius… - Drug Metabolism and …, 2014 - ASPET
Drug transporter inhibitors are important tools to elucidate the contribution of transporters to
drug disposition both in vitro and in vivo. These inhibitors are often unselective and affect …

The impact of solute carrier (SLC) drug uptake transporter loss in human and rat cryopreserved hepatocytes on clearance predictions

…, J Bylund, J Hoogstraate, L Afzelius… - Drug Metabolism and …, 2014 - ASPET
Cryopreserved hepatocytes are often used as a convenient tool in studies of hepatic drug
metabolism and disposition. In this study, the expression and activity of drug transporters in …