Target Site Pharmacokinetics of Ertapenem After Multiple Doses in Diabetes Patients With Soft Tissue Infection (2007-005020-33)
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|ClinicalTrials.gov Identifier: NCT00658866|
Recruitment Status : Completed
First Posted : April 15, 2008
Last Update Posted : August 9, 2011
Background/rationale: Ertapenem is an innovative antimicrobial agent, which is approved in the European Union for diabetic foot infections of the skin and soft tissue. Although its antimicrobial spectrum and activity against ESBL-strains are promising to treat infected ulcers associated with diabetes, there is a lack of data on tissue pharmacokinetics of ertapenem in this patient population. However, for antimicrobial efficacy it is important to show that the antibiotic achieves sufficient concentrations at the site of infection, i.e. in tissue. A recent clinical study by Burkhardt et al. (Journal of Antimicrobial Chemotherapy, 2006) using the microdialysis technique showed that the free tissue concentrations after a single dose of 1 g ertapenem are sufficient and adequate to kill most relevant bacteria, suggesting efficacy of ertapenem for soft tissue infections. It is well known that there is no accumulation of ertapenem in plasma after multiple doses of 1 g every 24 h in patients without significantly impaired renal function. The single dose study by Burkhardt et al. also suggests that only negligible drug accumulation can be expected in soft tissues of healthy young volunteers after multiple doses. However, it was shown for other antibiotics that tissue PK may be significantly different under pathologic conditions, leading to impaired penetration, but subsequent accumulation after multiple doses due to a longer tissue half life than in healthy volunteers. Since the properties of inflamed tissue may diverge from those of healthy tissue it is important to evaluate which concentrations of ertapenem are reached in inflamed tissue after multiple doses.
Clinical study: In the present study we will measure the concentrations of ertapenem over time in plasma and infected tissue of 10 diabetes patients after multiple doses. The microdialysis technique will be used. The ertapenem concentrations will be measured in inflamed tissue and in non-inflamed subcutaneous tissue to identify the effect of inflammation on pharmacokinetics. The findings of the present study will help to confirm the efficacy of ertapenem for the indication of diabetic soft tissue infections.
|Condition or disease||Intervention/treatment||Phase|
|Soft Tissue Infection||Procedure: Microdialysis||Phase 4|
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||10 participants|
|Intervention Model:||Single Group Assignment|
|Masking:||None (Open Label)|
|Official Title:||Target Site Pharmacokinetics of Ertapenem After Multiple Doses in Diabetes Patients With Soft Tissue Infection|
|Study Start Date :||February 2008|
|Actual Primary Completion Date :||February 2011|
|Actual Study Completion Date :||February 2011|
- Procedure: Microdialysis
PK measurements with microdialysisOther Name: n.a.
- Pharmacokinetics in tissue [ Time Frame: 3 years ]
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00658866
|Medical University Vienna, Department of Clinical Pharacology|
|Vienna, Austria, 1090|
|Principal Investigator:||Markus Mueller, MD||Medical University of Vienna, Dep. of Clinical Pharmacology|