Paul Volcker: Think More Boldly

Paul Volcker: Think More Boldly

In December 2009, The Wall Street Journal sponsored its second Future of Finance Initiative (links to a dead page) to provide a forum for 80 of the world’s top financiers to brainstorm suggestions for reforming the financial system in the wake of the 2008 implosion of the global economy.

Modeling Drug Disposition of Timolol in Ocular Tissues of Rabbit following Topical Eye Drops

Modeling Drug Disposition of Timolol in Ocular Tissues of Rabbit following Topical Eye Drops

Conference: ISOPT
Software: GastroPlus®
Division: Simulations Plus

Recently, we reported the successful application of a novel mathematical model describing drug disposition in eye compartments to simulate disposition of clonidine  after topical (eye drop) administration.

Prediction of pharmacokinetic profile of valsartan in human based on in vitro uptake transport data

Prediction of pharmacokinetic profile of valsartan in human based on in vitro uptake transport data

Publication: J Pharmacokinet Pharmacodyn
Software: GastroPlus®

The aim of this study was to evaluate a strategy based on a physiologically based pharmacokinetic (PBPK) model for the prediction of PK profiles in human using in vitro...

Optimizing the Performance of In Silico ADMET General Models According to Local Requirements: MARS Approach. Solubility Estimations As Case Study

Optimizing the Performance of In Silico ADMET General Models According to Local Requirements: MARS Approach. Solubility Estimations As Case Study

Publication: J Chem Inf Model
Software: ADMET Predictor®

The quality of in vitro data used to build in silico absorption, distribution, metabolism, and toxicity (ADMET) models is, in many cases, inconsistent.

An Uncommon Vignette?

An Uncommon Vignette?

Part 1
The CEO of a pharmaceutical company, tired of late-stage development failures and FDA questioning regarding dose selection, decides to act on the promise of pharmacometrics. “Fix it,” he says to the head of clinical pharmacology, “I don’t care what it takes!” The clinical pharmacologist agrees to take on the challenge and asks for a data programmer and pharmacometrician. Seizing on an opportunity to spearhead an upcoming “end of phase 2” meeting with the FDA, the pharmacologist quickly sketches out his strategy for the modeling activities required for dose selection and justification. He then instructs his programmer to assemble the required dataset using the data from several phase 1 studies and a recently completed phase 2 study. A week later he discovers that the modeling has not begun because the dataset is still not ready. “What is taking so long?” he wonders.

Modeling Fluconazole – a Case with Concentration-Dependent Liver:Plasma Partition Coefficient

Modeling Fluconazole – a Case with Concentration-Dependent Liver:Plasma Partition Coefficient

Conference: AAPS
Division: Simulations Plus

Fluconazole is an antifungal agent widely used in the clinical setting   for the treatment of candidiasis and meningitis. It undergoes minimal metabolism and is excreted renally.

PBPK Modeling of Fluoxetine and its Metabolite Norfluoxetine: Prediction of the Extent of Their Involvement in Drug Interactions

PBPK Modeling of Fluoxetine and its Metabolite Norfluoxetine: Prediction of the Extent of Their Involvement in Drug Interactions

Conference: AAPS
Division: Simulations Plus

The aim of our study was to simulate the human pharmacokinetics of fluoxetine and its major metabolite, norfluoxetine, and predict the magnitude of their drug-drug interactions (DDIs) using physiologically…

In Silico Prediction of Aqueous Solubility: The Solubility Challenge

In Silico Prediction of Aqueous Solubility: The Solubility Challenge

Publication: J Chem Inf Model
Software: ADMET Predictor®

The dissolution of a chemical into water is a process fundamental to both chemistry and biology. The persistence of a chemical within the environment and the effects of a chemical...

A Pharmacokinetic Simulation-Based Comparison Of Varying Adherence Rates For Paliperidone ER And Risperidone In Patients With Schizophrenia

A Pharmacokinetic Simulation-Based Comparison Of Varying Adherence Rates For Paliperidone ER And Risperidone In Patients With Schizophrenia

Conference: U.S. Psychiatric and Mental Health Congress
Division: Cognigen

Medication adherence is important to successful management of • patients with schizophrenia and related psychotic disorders; patient nonadherence is documented in numerous studies (e.g., 30%-35%…

Square Pegs in Round Holes?

Square Pegs in Round Holes?

A crusading scientist identifies a potential public health threat and uses the internet to get access to a cache of data from several studies. After a quick analysis of the pooled data, he reports a previously unrecognized adverse effect of a widely used drug. Patients and physicians become alarmed, and the drug is pulled from the market. Sound like the plot of a new medical thriller? In fact, a similar scenario has hit the headlines several times in the last 10 years. Each time, controversy about the validity of the analysis and conclusions was loud and lasting.