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- Klinische proef NCT01647997
Lactate Metabolism After an Endotoxin Challenge in Healthy Humans
Effects of an Acute Administration of Bacterial Endotoxin on Whole Body and Regional Lactate Metabolism in Healthy Male Volunteers
Sepsis is characterized by hyperlactatemia, the severity of which is proportionate with sepsis severity. The pathophysiological mechanisms (increased lactate production vs decreased lactate utilization; tissues involved in sepsis-induced lactate production) remain largely unknown.
In this study, the investigators will assess whole body and regional metabolism in healthy young male subjects on two occasions, once after administration of an intravenous bacterial endotoxin challenge, and once without intervention.
In one group of subjects, whole body lactate metabolism will be measured over 10 hours after the endotoxin challenge
- Energy expenditure and net substrate oxidation rates (indirect calorimetry)
- Lactate kinetics (measured by means of a continuous, exogenous sodium lactate infusion)
- Glucose kinetics (measured with 6,6 d2 glucose)
- Hemodynamic parameters and body temperature
- Blood clinical chemistry In one group of subjects, whole body lactate metabolism will be measured over 10 hours after the endotoxin challenge
- Energy expenditure and net substrate oxidation rates (indirect calorimetry)
- Lactate kinetics (measured by means of a continuous, exogenous sodium lactate infusion)
- Glucose kinetics (measured with 6,6 d2 glucose)
- Hemodynamic parameters and body temperature
- Blood clinical chemistry
In a second group of subjects, regional muscle lactate metabolism will be measured over 10 hours after the endotoxin challenge by means of muscle microdialysis
Studie Overzicht
Studietype
Inschrijving (Werkelijk)
Fase
- Niet toepasbaar
Contacten en locaties
Studie Locaties
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Vaud
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Lausanne, Vaud, Zwitserland, CH-1011
- Centre Hospitalier Universitaire Vaudois
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Beschrijving
Inclusion Criteria:
- gender male
- body mass index (BMI) < 25 kg/m2
- absence of known disease
Exclusion Criteria:
- any known pathology
- abnormal cardio-pulmonary and hemodynamic status
- electrocardiographic alterations
- history of allergy
- current medications
- drug abuse
- consumption of more than 20g/day alcohol
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Fundamentele wetenschap
- Toewijzing: Gerandomiseerd
- Interventioneel model: Opdracht voor een enkele groep
- Masker: Geen (open label)
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
|---|---|
|
Experimenteel: study 1a
whole body lactate production after bacterial endotoxin challenge
|
iv administration of 2ng/kg bacterial endotoxin
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|
Geen tussenkomst: study 1b
basal whole body lactate production
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Experimenteel: study 2a
muscle lactate concentration after bacterial endotoxin challenge
|
iv administration of 2ng/kg bacterial endotoxin
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Geen tussenkomst: study 2b
basal muscle lactate concentrations
|
Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
Whole body lactate production
Tijdsspanne: single bacterial endotoxin administration; measurements over 6.5 hours following administration
|
Whole body lactate clearance will be measured by measuring the increase in blood lactate at steady state during a conrtinuous exogenous sodium lactate infusion. Lactate production will be calculated as the product of lactate clearance times per-infusion blood lactate concentration |
single bacterial endotoxin administration; measurements over 6.5 hours following administration
|
|
skeletal muscle lactate concentration
Tijdsspanne: single bacterial endotoxin administration; measurements over 6.5 hours following administration
|
interstitial muscle measured by means of in vivo microdialysis ; calculation of muscle-blood lactate gradient
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single bacterial endotoxin administration; measurements over 6.5 hours following administration
|
Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
whole body energy expenditure
Tijdsspanne: single bacterial endotoxin administration; measurements over 6.5 hours following administration
|
open circuit indirect calorimetry (hood)
|
single bacterial endotoxin administration; measurements over 6.5 hours following administration
|
|
body temperature
Tijdsspanne: single bacterial endotoxin administration; measurements over 6.5 hours following administration
|
single bacterial endotoxin administration; measurements over 6.5 hours following administration
|
Medewerkers en onderzoekers
Sponsor
Medewerkers
Onderzoekers
- Hoofdonderzoeker: René Chiolero, MD, Centre Hospitalier Universitaire Vaudois
Publicaties en nuttige links
Studie record data
Bestudeer belangrijke data
Studie start
Primaire voltooiing (Werkelijk)
Studie voltooiing (Werkelijk)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Schatting)
Updates van studierecords
Laatste update geplaatst (Schatting)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Andere studie-ID-nummers
- Lsne-128/01
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