Pharmacokinetics and Pharmacodynamics of Antibiotics: 
a key to improved efficacy and prevention of resistance ...

 

30-11-00

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Table of Contents

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The ideal antibiotic ...

Will it always be ideal ?

Main causes of antibiotic failures... Adapted from Pechère J.C., 1988, 1993, 1998

Pharmacokinetics / pharmacodynamics as a step towards therapy...

Pharmacokinetics ...

Pharmacodynamics ...

Pharmacokinetic/ Pharmacodynamics in drug development and evaluation of efficacy 

PK/PD in drug develop-ment A view from FDA

Are PK/PD important for efficacy / toxicity ?

Pharmacokinetic/ Pharmacodynamics and antibiotic resistance...

Are PK/PD important in resistance ?

Single dose PK/PD parameters: a first sight

Multiple doses: the issues...

Pharmacokinetic / Pharmacodynamic parameters: a 2d sight

Pharmacokinetic/ Pharmacodynamics

PK/PD patterns of antimicrobial activity (1 of 3) (after WA. Craig, 2000)

PK/PD patterns of antimicrobial activity (2 of 3) (after WA. Craig, 2000)

PK/PD patterns of antimicrobial activity (3 of 3) (after WA. Craig, 2000)

PK/PD: role of concentration Point of Principle an example with Listeria monocytogenes

Pharmacokinetics / Pharmacodynamics in action ... 

Aminoglycosides : obtain a peak !

Aminoglycosides: practical applications for a 30 min infusion

Pharmacokinetics / Pharmacodynamics in action ... 

?-lactams : remain above the MIC ...

?-lactams : how long can you remain above the MIC ...

? - lactams* in clinical practice: is 1 g / 50 kg in bolus 2 times per day enough ?

? - lactams* in clinical practice: is 1 g / 50 kg in bolus 2 times per day enough ?

? - lactams* in clinical practice: is 1 g / 50 kg in bolus 2 times per day enough ?

Pharmacokinetics / Pharmacodynamics in action ... 

Als u een optimale bescherming met ? lactamen wenst… Voorstel : continu-infusie (vb. 4 g / dag)

? - lactamen in de praktijk: voorstel : continu-infusie (4 g / dag)

PK/PD of fluoroquinolones: role of the 24h-AUC MIC ciprofloxacin in hospital-acquired pneumonia

AUC / MIC ratio

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Pharmacokinetics / Pharmacodynamics in action ... 

24h-AUC / MIC as a tool to determine acceptable sensitivities to fluoroquinolones (p.o.)

The role of the peak for Fluoroquinolones ...

Peak concentrations of the main fluoroquinolones (p.o.)

Peak concentrations as a tool to determine acceptable sensitivities to fluoroquinolones (p.o.)

Combining it all …(Peak and 24h-AUC / MIC) as predictors of efficacy of FQ ...

Pharmacokinetics / Pharmacodynamics in action ... 

Pharmacokinetics / Pharmacodynamics in action ... 

Why would you not use low doses ?

Resistance: a global overview...

How do bacteria do it ? 

PK/PD and antibiotic efflux pumps...

PK/PD and antibiotic efflux pumps… an example with RND...

PK/PD for prevention of resistance: clinical data

PK/PD for prevention of resistance: clinical data

PK/PD for prevention of resistance: clinical data

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PK / PD: do they help ?

PK / PD: do they help ?

But we may, eventually have a brighter future...

Author: Paul M. Tulkens 

Email: tulkens@facm.ucl.ac.be

Home Page: http://www.md.ucl.ac.be/facm/facm-conferences.htm