A prospective, randomized, mixed double- and single-blinded, placebo-controlled, cross-over clinical trial to test whether acute treatment with an IL-1 receptor antagonist impacts insulin secretion over time during the cephalic phase, defined as the first 10 minutes after the first sensorial contact to food, in healthy individuals in healthy humans (Group 1) and in obese patients with type 2 diabetes (Group 2).
The role of the immune system in metabolism has been extensively investigated in pancreatic islets and insulin sensitive tissues. However little attention has been given to a potential role of the innate immune system in the cephalic phase of insulin secretion. In humans, the cephalic phase of insulin secretion appear reduced in obesity and in patients with type 2 diabetes. In this prospective, randomized, mixed double- and single-blinded, placebo-controlled, cross-over clinical trial we aim to test whether acute treatment with an IL-1 receptor antagonist impacts insulin secretion over time during the cephalic phase, defined as the first 10 minutes after the first sensorial contact to food, in healthy individuals in healthy humans (Group 1) and in obese patients with type 2 diabetes (Group 2). Group 1: After screening, subjects will be randomized to two crossover visits with a washout period of at least 4 days in-between visits and at most two weeks: A) subcutaneous saline injection 3h before an oral standardized meal, B) subcutaneous injection of 100 mg of the IL-1 receptor antagonist anakinra 3h before an oral standardized meal. Treatments will be placebo controlled, crossover, double blinded. The study will be performed in a population of healthy individuals. Group 2: Same as for Group 1 with the following addition: after the second study day, participant in group 2 will be trained to self-inject the medication for 6 days. On the 7th day, an oral standardized meal test will be performed. Healthy subjects from group 1 will be matched for sex and age to the diabetic cohort from group 2.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
DOUBLE
Enrollment
18
Subcutaneous injection of 100 mg/ 0.67 ml of Kineret or placebo
University Hospital Basel
Basel, Basel BS, Switzerland
Change in insulin concentration in blood during the cephalic phase of insulin secretion in healthy individuals
Insulin concentration in blood at 0, 3,6 and 10 minutes after ingestion of a standardized meal in healthy individuals.
Time frame: 10 minutes
Change in insulin concentration in blood during the cephalic phase of insulin secretion in obese patients with type 2 diabetes
Insulin concentration in blood at 0, 3, 6 and 10 minutes after ingestion of a standardized meal in healthy individuals in obese patients with type 2 diabetes.
Time frame: 10 minutes
Change of C-peptide
Plasma level of c-peptide before and after a standardized meal after acute treatment or repeated treatment with anakinra or placebo. Repeated Treatment applies only to anakinra and to Group 2.
Time frame: 6 hours
Change of insulin
Plasma level of insulin before and after a standardized meal after acute treatment or repeated treatment with anakinra or placebo. Repeated Treatment applies only to anakinra and to Group 2.
Time frame: 6 hours
Change of glucose
Plasma level of glucose before and after a standardized meal after acute treatment or repeated treatment with anakinra or placebo. Repeated Treatment applies only to anakinra and to Group 2.
Time frame: 6 hours
Change of glucagon
Plasma level of glucagon before and after a standardized meal after acute treatment or repeated treatment with anakinra or placebo. Repeated Treatment applies only to anakinra and to Group 2.
Time frame: 6 hours
Change of GLP-1
Plasma level of GLP-1 before and after a standardized meal after acute treatment or repeated treatment with anakinra or placebo. Repeated Treatment applies only to anakinra and to Group 2.
Time frame: 6 hours
Change of pancreatic polypeptide
Plasma level of pancreatic polypeptide before and after a standardized meal after acute treatment or repeated treatment with anakinra or placebo. Repeated Treatment applies only to anakinra and to Group 2.
Time frame: 6 hours
Change of IL-1β
Plasma level of IL-1β before and after a standardized meal after acute treatment or repeated treatment with anakinra or placebo. Repeated Treatment applies only to anakinra and to Group 2.
Time frame: 6 hours
Change of IL-6
Plasma level of IL-6 before and after a standardized meal after acute treatment or repeated treatment with anakinra or placebo. Repeated Treatment applies only to anakinra and to Group 2.
Time frame: 6 hours
Change of IL-1Ra
Plasma level of IL-1Ra before and after a meal through nasogastric tube or with anakinra or placebo after a standardized meal.
Time frame: 6 hours
Change of TNFa
Plasma level of TNFa before and after a standardized meal after acute treatment or repeated treatment with anakinra or placebo. Repeated Treatment applies only to anakinra and to Group 2.
Time frame: 6 hours
change in hunger
Visual analogue scale (VAS) for hunger (from minimum value = not hungry at all to maximum value = extremely hungry) before and after a standardized meal after acute treatment or repeated treatment with anakinra or placebo. Repeated Treatment applies only to anakinra and to Group 2.
Time frame: 6 hours
Change in autonomic function
Change in heart-rate variability during a continuous ECG as indirect measure of measure of the autonomic function before and after a standardized meal after acute treatment or repeated treatment with anakinra or placebo. Repeated Treatment applies only to anakinra and to Group 2.
Time frame: 6 hours
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