Cytokine Levels of Patients Who Underwent Obesity Surgery

July 25, 2021 updated by: Ufuk Oguz Idiz, Istanbul Training and Research Hospital

Evaluation of Blood Cytokine Levels of Patients Who Underwent Sleeve Gastrectomy and Gastric Bypass Operations Due to Obesity

Obesity is an important public health problem worldwide. There are large regional differences in the prevalence of overweight and obesity. Obesity is a growing problem in both developed and low-income countries. Obesity is a common condition characterized by excessive fat accumulation in adipose tissue. It is associated with metabolic, hematological and musculoskeletal complications, increased risk of dyslipidemia, heart disease, diabetes and some malignancies, leading to a shortened life span. Inflammation from adipose tissue has been identified as the main source of systemic inflammation and may also be associated with insulin resistance. Adipocytes and adipose tissue-related macrophages from obese individuals are an important source of inflammatory mediators such as TNF-α, IL-6, IL-1 and MCP-1. It has also been shown that decreased levels of IL-10, an anti-inflammatory cytokine, are associated with obesity and metabolic syndrome.We aimed to evaluate changes in 13 different proinflammatory and anti-inflammatory cytokines in patients who underwent sleeve gastrectomy or gastric bypass.

Study Overview

Status

Status

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

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.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Obesity is an important public health problem worldwide. There are large regional differences in the prevalence of overweight and obesity. Obesity is a growing problem in both developed and low-income countries. Obesity is a common condition characterized by excessive fat accumulation in adipose tissue. It is associated with metabolic, hematological and musculoskeletal complications, increased risk of dyslipidemia, heart disease, diabetes and some malignancies, leading to a shortened life span. Inflammation from adipose tissue has been identified as the main source of systemic inflammation and may also be associated with insulin resistance. Adipocytes and adipose tissue-related macrophages from obese individuals are an important source of inflammatory mediators such as TNF-α, IL-6, IL-1 and MCP-1. It has also been shown that decreased levels of IL-10, an anti-inflammatory cytokine, are associated with obesity and metabolic syndrome.There are many studies examining the changes in the weight and blood values of patients after bariatric surgery. Among these blood values, cytokines, which are inflammation mediators, were evaluated. However, in these studies, either sleeve gastrectomy or gastric bypass was evaluated separately and generally focused on TNF-α, IL-6, IL-1, IL10, and MCP-1 cytokines. There are conflicting results regarding the parameters examined in these studies. In some studies, no difference was found in the cytokines examined, while some regression was observed in proinflammatory cytokines. The situation is similar for IL10, which is one of the anti-inflammatory cytokines. An increase in IL10 values was observed in a study evaluating patients who underwent gastritic bypass, whereas no difference was found in a study evaluating sleeve gastrectomy patients.We aimed to evaluate changes in 13 different proinflammatory and anti-inflammatory cytokines before and 6 month after the surgery in patients who underwent sleeve gastrectomy or gastric bypass

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 (Actual)

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.
30

Contacts and Locations

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

Study Locations

  • Turkey
      • Istanbul, Turkey, 34371
        • Istanbul Training and Research Hospital

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 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Patients who had >35 body mass index and had obesity surgery (sleeve gastrectomy, gastric bypass) will be included

Description

Inclusion Criteria:

  • Patients who had sleeve gastrectomy or gastric bypass due to obesity

Exclusion Criteria:

  • Cancer patients,
  • Pregnant women,
  • Have a history of immunodeficiency
  • Patients with previous obesity surgery

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

  • Observational Models: Case-Only
  • 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.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Sleeve Gastrectomy
Patients who underwent Sleeve gastrectomy operation
Diagnostic test: Flow Cytometric analysis
Measuring the level of IL-1β, IFN-α2, IFN-γ, TNF-α, MCP-1 (CCL2), IL-6, IL-8 (CXCL8), IL-10, IL-12p70, IL-17A, IL-18, IL-23, IL-33 cytokines in the serum
Gastric Bypass
Patients who underwent Gastric Bypass operation
Diagnostic test: Flow Cytometric analysis
Measuring the level of IL-1β, IFN-α2, IFN-γ, TNF-α, MCP-1 (CCL2), IL-6, IL-8 (CXCL8), IL-10, IL-12p70, IL-17A, IL-18, IL-23, IL-33 cytokines in the serum

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
Measure Description
Time Frame
Cytokine levels
Time Frame: 6 months
Serum IL-1β, IFN-α2, IFN-γ, TNF-α, MCP-1 (CCL2), IL-6, IL-8 (CXCL8), IL-10, IL-12p70, IL-17A, IL-18, IL-23, IL-33 levels
6 months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Weight changes
Time Frame: 6 months
The weight changes over time after the surgery
6 months

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.
Istanbul Training and Research Hospital

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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 (Actual)

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.
June 1, 2020

Primary Completion (Actual)

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.
June 1, 2021

Study Completion (Actual)

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.
July 1, 2021

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).
September 3, 2020

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.
September 3, 2020

First Posted (Actual)

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.
September 7, 2020

Study Record Updates

Last Update Posted (Actual)

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.
July 27, 2021

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.
July 25, 2021

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.
July 1, 2021

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

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.
  • Obesity Cytokine

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

Undecided

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

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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