The Futile Quest of Proofing a Negative in the Presence of Overwhelming Absence of Harm

The cartilage damage caused by fluoroquinolones in juvenile beagle dogs is not subtle:  blister formation and erosions occur in a dose-dependent fashion resulting in reversible cartilage damage.  These lesions can be seen not just histologically but even macroscopically.  The animals are unable to walk as weight-bearing joints are predominantly affected.  Continue reading The Futile Quest of Proofing a Negative in the Presence of Overwhelming Absence of Harm

What is the “Niche” for Ceftolozane / Tazobactam?

There are currently a total of 6 beta-lactam + beta-lactamase inhibitor combinations in clinical trials. It will be a steep learning curve for the pharma reps (and physicians) to understand the resistance classifications, the confusing ESBL definitions, the CRE nomenclature, and how this all matters in clinical practice, on the Continue reading What is the “Niche” for Ceftolozane / Tazobactam?

The Breakpoint Dilemma

As antibiotic resistance increases over the years, originally established susceptibility breakpoints (S-I-R) are becoming less relevant.   This ‘creep’ towards higher MICs over time is a unique but well-known feature of antimicrobials ultimately making these drugs obsolete. In the past, FDA and CLSI did not bother to update breakpoints in Continue reading The Breakpoint Dilemma