- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02863276
Modulating the Stress Response in Diabetes Mellitus Type 2 Patients Undergoing Colon Surgery
Background Surgical injury provokes a stress response. These pathways mediated by stress hormones and cytokines cause a catabolic state. The loss of body cell mass may result in prolonged convalescence and increased morbidity. Protein catabolism after colorectal surgery is even more increased in patients with type 2 diabetes mellitus. Epidural blockade, by reducing the intensity of the catabolic response, improves substrate utilization after surgery in non-diabetic patients. This effect is even more pronounced in diabetic patients receiving amino acids.
The aim of the study is to explore the effect of two different protocols to manage blood glucose control on glucose and protein metabolism in patients with type 2 diabetes mellitus undergoing colon surgery and receiving epidural analgesia and perioperative feeding with amino acids. The following hypotheses are tested:
- Tight perioperative blood glucose control with intensified insulin therapy compared to standard blood glucose control in presence of general anesthesia with epidural analgesia and amino acid infusion would reduce endogenous glucose production and leucine oxidation.
- Tight blood glucose control and perioperative infusion of amino acids induce a more positive protein balance compared to standard blood glucose control by better oxidative glucose utilization and redirecting amino acids from oxidative to synthetic pathways.
Material and Methods A total of 20 patients with diabetes mellitus type 2 undergoing elective colorectal surgery will be admitted to the study. Patients will be randomly assigned to receive standard blood glucose control (blood glucose target <10 mmol*l-1; control group; cytotoxic T lymphocyte (CTL) group, n=8) or to receive tight blood glucose control with intensified insulin therapy (blood glucose target<6 mmol*l-1; intensified insulin group; II group, n=8). All patients will receive general anesthesia and an epidural catheter for perioperative analgesia. During surgery (intraoperative state) and immediately after surgery (postoperative state) when receiving an amino acid infusion protein and glucose kinetics will be assessed using a stable isotope technique with L-[1-13C]leucine and [6,6-2H2]glucose and circulating concentrations of glucose, glucagon, insulin and cortisol will be measured. The primary endpoints of the study will be protein balance. Sample size is set to ensure at least 80% power at a significance level of 0.05.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Patients undergoing elective colorectal surgery for non-metastatic disease
- Type 2 diabetes mellitus with plasma level of glycosylated hemoglobin level (HbA(1c)) less than 10% indicating normal or moderate glycemic control
- Being capable of signing informed consent
- Accepting an epidural catheter for perioperative analgesia
Exclusion Criteria:
- American Society of Anesthesiologists (ASA) Physical Status classification system 4 with major cardiac disorders (severe arrhythmias, recent myocardial ischemia (MI), heart failure, uncontrolled hypertension)
- Hepatic disorders (liver failure, jaundice, metastatic disease), renal disorders (acute or chronic renal failure or on dialysis)
- Metabolic disorders (untreated hyperthyroidism, pyrexia, more than 10% weight loss over the preceding three months, plasma albumin concentration < 35g/l)
- Anemia (hemoglobin < 10 g/dl)
- Chemotherapy or radiotherapy during six months before surgery
- Inflammatory bowel disease or other inflammatory condition
- Pregnancy
- Previous spine surgery precluding placement of an epidural catheter.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Basic Science
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Intensified insulin group
Patients undergoing elective colorectal surgery will receive standard anesthesia including epidural analgesia and nutritional support with an intravenous amino acid solution while receiving tight blood glucose control with intensified insulin therapy (blood glucose target<6 mmol*l-1) via an continuous insulin infusion.
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Other Names:
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No Intervention: Control group
Patients undergoing elective colorectal surgery will receive standard anesthesia including epidural analgesia and nutritional support with an intravenous amino acid solution while receiving standard blood glucose control (blood glucose target <10 mmol*l-1) via subcutaneous insulin boluses
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Postoperative protein balance (leucine) (umol/kg/h)
Time Frame: Postoperative period: starting with arrival in the postoperative care unit and ending after 3 hours
|
Measured and calculated with a 3-hour stable isotope tracer technique with L-(1-13C)leucine and calorimetry towards the end of the 3 hour period
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Postoperative period: starting with arrival in the postoperative care unit and ending after 3 hours
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Intraoperative protein metabolism: Rate of appearance of leucine (umol/kg/h)
Time Frame: Intraoperative period: starting with the induction of anesthesia and ending after 3 hours (during surgery)
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Measured and calculated with a 3-hour stable isotope tracer technique with L-(1-13C)leucine
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Intraoperative period: starting with the induction of anesthesia and ending after 3 hours (during surgery)
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Intraoperative protein metabolism: endogenous rate of appearance of leucine (umol/kg/h)
Time Frame: Intraoperative period: starting with the induction of anesthesia and ending after 3 hours (during surgery)
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Measured and calculated with a 3-hour stable isotope tracer technique with L-(1-13C)leucine
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Intraoperative period: starting with the induction of anesthesia and ending after 3 hours (during surgery)
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Intraoperative glucose metabolism: Endogenous rate of appearance of glucose (umol/kg/min)
Time Frame: Intraoperative period: starting with the induction of anesthesia and ending after 3 hours (during surgery)
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Measured and calculated with a 3-hour stable isotope tracer technique with D-(6,6-2H2)glucose
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Intraoperative period: starting with the induction of anesthesia and ending after 3 hours (during surgery)
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Intraoperative glucose metabolism: Glucose clearance (ml/kg/min)
Time Frame: Intraoperative period: starting with the induction of anesthesia and ending after 3 hours (during surgery)
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Measured and calculated with a 3-hour stable isotope tracer technique with D-(6,6-2H2)glucose and plasma glucose measurement
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Intraoperative period: starting with the induction of anesthesia and ending after 3 hours (during surgery)
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Postoperative protein metabolism: Rate of appearance of leucine (umol/kg/h)
Time Frame: Postoperative period: starting with arrival in the postoperative care unit and ending after 3 hours
|
Measured and calculated with a 3-hour stable isotope tracer technique with L-(1-13C)leucine and calorimetry towards the end of the 3 hour period
|
Postoperative period: starting with arrival in the postoperative care unit and ending after 3 hours
|
Postoperative protein metabolism: Endogenous rate of appearance of leucine (umol/kg/h)
Time Frame: Postoperative period: starting with arrival in the postoperative care unit and ending after 3 hours
|
Measured and calculated with a 3-hour stable isotope tracer technique with L-(1-13C)leucine and calorimetry towards the end of the 3 hour period
|
Postoperative period: starting with arrival in the postoperative care unit and ending after 3 hours
|
Postoperative protein metabolism: Leucine oxidation (umol/kg/h)
Time Frame: Postoperative period: starting with arrival in the postoperative care unit and ending after 3 hours
|
Measured and calculated with a 3-hour stable isotope tracer technique with L-(1-13C)leucine and calorimetry towards the end of the 3 hour period
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Postoperative period: starting with arrival in the postoperative care unit and ending after 3 hours
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Postoperative protein metabolism: Protein synthesis (leucine) (umol/kg/h)
Time Frame: Postoperative period: starting with arrival in the postoperative care unit and ending after 3 hours
|
Measured and calculated with a 3-hour stable isotope tracer technique with L-(1-13C)leucine and calorimetry towards the end of the 3 hour period
|
Postoperative period: starting with arrival in the postoperative care unit and ending after 3 hours
|
Postoperative glucose metabolism: Endogenous rate of appearance of glucose (umol/kg/min)
Time Frame: Postoperative period: starting with arrival in the postoperative care unit and ending after 3 hours
|
Measured and calculated with a 3-hour stable isotope tracer technique with D-(6,6-2H2)glucose
|
Postoperative period: starting with arrival in the postoperative care unit and ending after 3 hours
|
Postoperative glucose metabolism: Glucose clearance (ml/kg/min)
Time Frame: Postoperative period: starting with arrival in the postoperative care unit and ending after 3 hours
|
Measured and calculated with a 3-hour stable isotope tracer technique with D-(6,6-2H2)glucose and plasma glucose measurement
|
Postoperative period: starting with arrival in the postoperative care unit and ending after 3 hours
|
Collaborators and Investigators
Investigators
- Study Chair: Andrea Kopp Lugli, MD, MSc, University Hospital, Basel, Switzerland
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 230/09
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