|
Home
Search
Study Topics
Glossary
|
![]() |
![]() |
|
![]() |
|
![]() |
|
![]() |
![]() |
![]() |
|
![]() |
![]() |
||||||||||||||||||||||||||||||||||||
| Tracking Information | |||||
|---|---|---|---|---|---|
| First Received Date ICMJE | August 7, 2007 | ||||
| Last Updated Date | September 30, 2009 | ||||
| Start Date ICMJE | August 2007 | ||||
| Primary Completion Date | August 2008 (final data collection date for primary outcome measure) | ||||
| Current Primary Outcome Measures ICMJE |
|
||||
| Original Primary Outcome Measures ICMJE |
|
||||
| Change History | Complete list of historical versions of study NCT00513110 on ClinicalTrials.gov Archive Site | ||||
| Current Secondary Outcome Measures ICMJE | |||||
| Original Secondary Outcome Measures ICMJE | |||||
| Descriptive Information | |||||
| Brief Title ICMJE | A Possible Therapeutic Role for Adenosine During Inflammation | ||||
| Official Title ICMJE | A Possible Therapeutic Role for Adenosine During Inflammation | ||||
| Brief Summary | The adenosine receptor is known for its anti-inflammatory actions and could therefore be a potential target in the treatment of sepsis and septic shock. Stimulation of the adenosine receptor could potentially lead to a decrease in inflammation and tissue damage. Under normal conditions adenosine is formed either by an intracellular 5`nucleotidase, which dephosphorylates AMP, or by the hydrolysis of S-adenosylhomcysteine by hydrolase. An alternative pathway of AMP degradations is provided by the cytosolic enzyme AMP deaminase (AMPD), which catalyses the irreversible deamination of AMP to inosine monophosphate and ammonia. In humans four AMPD isoforms have been described, named after the source from which they were initially purified; M (muscle), L (liver), E1 and E2 (erythrocyte), encoded by AMPD1, AMPD2 and AMPD3. Approximately 15-20% of Caucasian and African American individuals are heterozygous or homozygous for the 34C>T variant of AMPD1. We hypothesize that healthy volunteers who have the polymorphism for AMPD1 have a less severe inflammatory response to LPS and show less (severe) organ failure. This hypothesis is based on the expected higher levels of adenosine in patients with the AMPD1 polymorphism. This hypothesis is strengthened by the fact that patients with coronary artery disease and the AMPD1 polymorphism show improved cardiovascular survival (Anderson JL et al. J Am Coll Cardiol 2000; 36: 1248-52) possibly based on higher adenosine levels by reduced AMPD activity. Furthermore the polymorphism predicts improved clinical outcome in patients with heart failure (Loh E et al. Circulation 1999) also based on a hypothetical elevation of adenosine. We hypothesize that: The C34T-polymorphism of the enzyme AMP-deaminase leads to a decreased inflammatory respons and thereby a decrease of LPS-induced tissue damage. A second hypothesis is based on the antagonism of the adenosine receptor, by caffeine; Antagonism of the adenosine receptor by caffeine leads to an increased LPS-induced inflammatory reaction and an increase in (subclinical) tissue damage? |
||||
| Detailed Description | |||||
| Study Phase | Phase I | ||||
| Study Type ICMJE | Interventional | ||||
| Study Design ICMJE | Prevention, Randomized, Double Blind (Subject, Investigator), Placebo Control, Parallel Assignment, Pharmacokinetics/Dynamics Study | ||||
| Condition ICMJE | Endotoxemia | ||||
| Intervention ICMJE |
|
||||
| Study Arms / Comparison Groups |
|
||||
| Publications * | |||||
|
* Includes publications given by the data provider as well as publications identified by National Clinical Trials Identifier (NCT ID) in Medline. |
|||||
| Recruitment Information | |||||
| Recruitment Status ICMJE | Completed | ||||
| Estimated Enrollment ICMJE | 33 | ||||
| Completion Date | August 2008 | ||||
| Primary Completion Date | August 2008 (final data collection date for primary outcome measure) | ||||
| Eligibility Criteria ICMJE | Inclusion Criteria:
Exclusion Criteria:
|
||||
| Gender | Male | ||||
| Ages | 18 Years to 35 Years | ||||
| Accepts Healthy Volunteers | Yes | ||||
| Contacts ICMJE | Contact information is only displayed when the study is recruiting subjects | ||||
| Location Countries ICMJE | Netherlands | ||||
| Administrative Information | |||||
| NCT ID ICMJE | NCT00513110 | ||||
| Responsible Party | P.Pickkers MD PhD, Radboud University Nijmegen Medical Centre | ||||
| Study ID Numbers ICMJE | 2007/099, CMO 2007/099 | ||||
| Study Sponsor ICMJE | Radboud University | ||||
| Collaborators ICMJE | |||||
| Investigators ICMJE |
|
||||
| Information Provided By | Radboud University | ||||
| Verification Date | August 2007 | ||||
|
ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP |
|||||