Transient Elastography of the Liver ( Fibroscan ) and Bariatric Surgery

April 22, 2014 updated by: Assy Nimer, Ziv Hospital
To evaluate the effect of Bariatric surgery on the extent of liver fat and liver fibrosis and on different metabolic parameters in patients undergoing sleeve gastrectomy surgery.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Unknown

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Detailed Description

The effect of bariatric surgery on the extent of fat and extent of liver fibrosis following sleeve gastrtrectomy is unknown. Methods : 60 obese NAFLD patients will undergo sleeve gastrectomy surgery. Measurements will be conducted at: baseline, and at 6 Month and will include: abdominal US, Fibroscan elastography , biochemical tests, anthropometric measurements, and questionnaires for demographic details, quality of life, food intake, food tolerance and habitual physical activity. Primary Outcome Measures: Liver fat quantification (controlled attenuation parameter;CAP ) and stiffness at baseline and at 6 months by fibroscan. The liver stiffness is measured by Fibroscan in a volume of approximates 1 cm wide and 4 cm long cylinder, representing 1/500 of liver tissue (100 times greater than a biopsy sample). The results of the Fibroscan will be expressed in KiloPascals (kPa). The Fibroscan XL probe reduces Fibroscan failure and facilitates reliable liver stiffness measurement in obese patients compared with the common M probe. Secondary Outcome Measures: metabolic parameters including insuline resistance, CRP, MDA, Paraoxonase, and bile acid levels. Quality of life and Food tolerance after bariatric surgery

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Anticipated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
60

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • Israel
      • Safed, Israel, 13100
        • ZIV Medical Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

60 obese NAFLD patients after sleeve gastrectomy surgery

Description

Inclusion Criteria:

  • Subjects 18-65 years old
  • BMI > 40 kg/m² or BMI > 35 kg/m² with comorbidities
  • Willingness to take a metformin once a day for 6 months
  • Ultrasound diagnosed NAFLD patients
  • Reading and speaking Hebrew

Exclusion Criteria:

  • Subject with mental illness or cognitive deterioration
  • Use of probiotic/antibiotic 3 mounts before surgery
  • Use of other antibiotic for more than 1 week during the study
  • Drug addiction
  • Excessive alcohol consumption (≥ 30 g/day in men or ≥ 20 g/day in women)
  • Treatment with drugs known to cause hepatic steatosis or elevation of liver enzymes (e.g. Corticosteroids, HAART, Amiodarone, high dose estrogens)
  • Treatment with drugs or supplements that may improve hepatic steatosis or liver enzymes (Vitamin E, Milk thistle, ω-3 fatty acid, Ursodeoxycholic acid) 3 months prior to the initiation of the study
  • Other causes of chronic liver disease ( e.g. viral hepatitis: HBV/HCV +, autoimmune hepatitis, Hemochromatosis, Wilson's disease)
  • Diabetic patients who are treated with antidiabetic medications, except diabetic patients who are treated for at least 6 months exclusively with Metformin at a stable dose
  • Subjects who began a new lipid reduction medications less than 6 months prior to the initiation of the study
  • Subjects with chronic conditions that could interfere with our study: active cancer, organ transplant subjects, advanced kidney or liver disease, inflammatory bowel disease and other systemic inflammatory conditions
  • Bariatric surgery in the past

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
NAFLD after sleeve gastrectomy surgery

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Transient elastography
Time Frame: 6 month after baseline
6 month after baseline

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Ziv Hospital

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Nimer Assy, Prof, ZIV Medical Center

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
April 1, 2014

Primary Completion (Anticipated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
April 1, 2015

Study Completion (Anticipated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
April 1, 2015

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
March 20, 2014

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 22, 2014

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
April 24, 2014

Study Record Updates

Last Update Posted (Estimate)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 24, 2014

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 22, 2014

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2014

More Information

Terms related to this study

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 0007-14-ZIV

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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