Ethanol Induces Skeletal Muscle Autophagy
Study Details
Study Description
Brief Summary
In this study we plan to demonstrate that ethanol induces skeletal muscle autophagy to degrade MAA adducts.
Condition or Disease | Intervention/Treatment | Phase |
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Detailed Description
Hypothesis: Ethanol mediated modification of skeletal muscle proteins to form MAA adducts that in turn induce skeletal muscle autophagy.
Patients with alcoholic steatosis, hepatitis and cirrhosis (n=10 each) will be recruited from the liver transplant nutrition clinic or the hepatology inpatient service and their body composition quantified using anthropometry, bioelectrical impedance analysis, CT image analysis and DEXA if available.
Control Subjects. Controls will be recruited by advertisement. All control subjects will have a normal clinical history, physical examination, and screening chemistries. They will not have any significant medical conditions requiring the use of medications. Their nutritional status within 20% of normal as defined by ideal body weight.
Study Design
Arms and Interventions
Arm | Intervention/Treatment |
---|---|
Alcoholic Steatosis This group will have 10 patients with alcoholic steatosis which is milder disease and muscle biopsies will be performed |
Other: Biopsies
Biopsy will be done on the Vastus Lateralis muscle in all groups
|
Cirrhosis This group will consist of 10 patients with cirrhosis. We anticipate a 50% difference in these patients and the controls in the autophagy readouts and muscle biopsies will be performed |
Other: Biopsies
Biopsy will be done on the Vastus Lateralis muscle in all groups
|
Steatohepatitis This group will have 10 patients with alcoholic steatohepatitis that have more severe necroinflammation in the liver but for a shorter duration of illness and muscle biopsies will be performed |
Other: Biopsies
Biopsy will be done on the Vastus Lateralis muscle in all groups
|
controls This group will consist of 10 patients who are healthy and have no liver disease diagnosis and muscle biopsies will be performed |
Other: Biopsies
Biopsy will be done on the Vastus Lateralis muscle in all groups
|
Outcome Measures
Primary Outcome Measures
- Skeletal Muscle Autophagy [4 hours]
We will measure Malonyldialdehyde Acetaldehyde protein adducts to see skeletal muscle proteolysis during a one time muscle biopsy
Eligibility Criteria
Criteria
Inclusion Criteria:
Alcoholic liver disease:
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clinical, biochemical, imaging criteria and liver biopsy where available
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Age 18 - 65 years old
Controls:
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Serum liver transaminases (i.e. ALT and AST) 40 IU/L
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Normal liver ultrasound
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Age 18 - 65 years old
Exclusion Criteria:
For both groups - alcoholic liver disease and controls:
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Poorly controlled diabetes mellitus (HbA1C>9.5 g/dl)
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Untreated Hyper- / hypo- thyroidism
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Patients on dialysis, renal disease with serum creatinine 1.5 mg/dL
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Active intravenous drug use
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History of bowel surgery or gastric bypass surgery
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Medications known to alter muscle protein metabolism (i.e. corticosteroids, tamoxifen, high-dose estrogen, testosterone or anabolic steroids)
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Metastatic disease, Advanced cardiac or pulmonary disease
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Pregnancy
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Coagulopathy- INR >1.4 and platelet count <80,000/ml.
Contacts and Locations
Locations
Site | City | State | Country | Postal Code | |
---|---|---|---|---|---|
1 | Cleveland Clinic | Cleveland | Ohio | United States | 44195 |
Sponsors and Collaborators
- The Cleveland Clinic
Investigators
- Principal Investigator: Srinivasan Dasarathy, MD, The Cleveland Clinic
Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- 14-1287