ObesityNCT04540263
Cytokine Levels of Patients Who Underwent Obesity Surgery
An observational study of Obesity, run by Istanbul Training and Research Hospital at 1 site in Turkey (Türkiye).
Trial summary
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. Read more about this study
- Who is it for?
- Ages 18 to 80 years
- Conditions the study is for
- Obesity
- What is being tested?
- Flow Cytometric analysis
- How many people
- 30 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 1 Jun 2020to 1 Jul 2021
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 80 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Patients who had >35 body mass index and had obesity surgery (sleeve gastrectomy, gastric bypass) will be included
Who may be able to join
- Patients who had sleeve gastrectomy or gastric bypass due to obesity
Who cannot join
- Cancer patients,
- Pregnant women,
- Have a history of immunodeficiency
- Patients with previous obesity surgery
Trial locations and contacts
1 site in 1 country.
Turkey (Türkiye)1 site
Istanbul Training and Research Hospital
Istanbul, 34371
About this study
Official title: 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.
Read the 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
- Conditions
- Obesity
- Being tested
- Flow Cytometric analysis
- Keywords
- Sleeve Gastrectomy, Gastric bypass, Flow-cytometry, Cytokine
- Medical subject headings
- Obesity
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Flow Cytometric analysisDiagnostic test
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
| Study group | Role | What they receive |
|---|---|---|
| Sleeve Gastrectomy | Patients who underwent Sleeve gastrectomy operation Receives: Diagnostic Test: Flow Cytometric analysis | |
| Gastric Bypass | Patients who underwent Gastric Bypass operation Receives: Diagnostic Test: Flow Cytometric analysis |
What is being measured
The primary outcome is the main question the study is designed to answer.
Cytokine levels
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
Measured: 6 months
Secondary outcomes (1)
Weight changes
The weight changes over time after the surgery
Measured: 6 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted7 Sep 2020
- Study start1 Jun 2020
- Primary completion1 Jun 2021
- Study completion1 Jul 2021
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (3)Papers the sponsor has linked to this study.
- Other trials for ObesityStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case only
- Time perspective
- Prospective
- Enrolment
- 30 participants (actual)
Sponsor and investigators
- Lead sponsor
- Istanbul Training and Research Hospital
- Sponsor type
- Other government
- Responsible party
- Principal investigator, Ufuk Oguz Idiz, Istanbul Training and Research Hospital
- Investigators
- Ufuk Oguz Idiz, Assoc.Prof., Principal investigator, Istanbul Training and Research Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04540263
- Sponsor's protocol ID
- Obesity Cytokine
- Status last verified
- Jul 2021
- First submitted
- 3 Sep 2020
- Last updated
- 27 Jul 2021
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Undecided
Publications
Salman MA, Salman AA, Nafea MA, Sultan AAEA, Anwar HW, Ibrahim AH, Awad A, Ahmed RA, Seif El Nasr SM, Abouelregal TE, Shaaban HE, Mohamed FAH. Study of changes of obesity-related inflammatory cytokines after laparoscopic sleeve gastrectomy. ANZ J Surg. 2019 Oct;89(10):1265-1269. doi: 10.1111/ans.15427. Epub 2019 Sep 11.
PubMed 31508889Shimizu H, Hatao F, Imamura K, Takanishi K, Tsujino M. Early Effects of Sleeve Gastrectomy on Obesity-Related Cytokines and Bile Acid Metabolism in Morbidly Obese Japanese Patients. Obes Surg. 2017 Dec;27(12):3223-3229. doi: 10.1007/s11695-017-2756-9.
PubMed 28569359Cepeda-Lopez AC, Allende-Labastida J, Melse-Boonstra A, Osendarp SJ, Herter-Aeberli I, Moretti D, Rodriguez-Lastra R, Gonzalez-Salazar F, Villalpando S, Zimmermann MB. The effects of fat loss after bariatric surgery on inflammation, serum hepcidin, and iron absorption: a prospective 6-mo iron stable isotope study. Am J Clin Nutr. 2016 Oct;104(4):1030-1038. doi: 10.3945/ajcn.115.115592. Epub 2016 Aug 24.
PubMed 27557657
Study at a glance
From the registry record, last updated by the sponsor on 27 Jul 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Evaluation of Blood Cytokine Levels of Patients Who Underwent Sleeve Gastrectomy and Gastric Bypass Operations Due to Obesity
- ClinicalTrials.gov ID
- NCT04540263
- Acronym / sponsor ID
- Obesity Cytokine
- Conditions
- Obesity
- Keywords
- Sleeve Gastrectomy, Gastric bypass, Flow-cytometry, Cytokine
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 30 participants (actual)
- Lead sponsor
- Istanbul Training and Research HospitalOther government
- Study start
- 1 Jun 2020 (actual)
- Primary completion
- 1 Jun 2021 (actual)
- Study completion
- 1 Jul 2021 (actual)
- First posted
- 7 Sep 2020 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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.
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 design
- Observational model
- Case only
- Time perspective
- Prospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Sleeve Gastrectomy | – | Diagnostic Test: Flow Cytometric analysisPatients who underwent Sleeve gastrectomy operation |
| Gastric Bypass | – | Diagnostic Test: Flow Cytometric analysisPatients who underwent Gastric Bypass operation |
Who may qualify
- Ages
- 18 to 80 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Patients who had >35 body mass index and had obesity surgery (sleeve gastrectomy, gastric bypass) will be included
Key inclusion criteria (1 listed)
- Patients who had sleeve gastrectomy or gastric bypass due to obesity
Key exclusion criteria (4 listed)
- Cancer patients,
- Pregnant women,
- Have a history of immunodeficiency
- Patients with previous obesity surgery
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Flow Cytometric analysisMeasuring 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 | Diagnostic test | Gastric Bypass, Sleeve Gastrectomy |
Primary outcome
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
1 secondary outcome
Weight changes
Time frame: 6 months
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 27 Jul 2021.
- Background: PubMed 31508889Salman MA, Salman AA, Nafea MA, Sultan AAEA, Anwar HW, Ibrahim AH, Awad A, Ahmed RA, Seif El Nasr SM, Abouelregal TE, Shaaban HE, Mohamed FAH. Study of changes of obesity-related inflammatory cytokines after laparoscopic sleeve gastrectomy. ANZ J Surg. 2019 Oct;89(10):1265-1269. doi: 10.1111/ans.15427. Epub 2019 Sep 11.
- Background: PubMed 28569359Shimizu H, Hatao F, Imamura K, Takanishi K, Tsujino M. Early Effects of Sleeve Gastrectomy on Obesity-Related Cytokines and Bile Acid Metabolism in Morbidly Obese Japanese Patients. Obes Surg. 2017 Dec;27(12):3223-3229. doi: 10.1007/s11695-017-2756-9.
- Background: PubMed 27557657Cepeda-Lopez AC, Allende-Labastida J, Melse-Boonstra A, Osendarp SJ, Herter-Aeberli I, Moretti D, Rodriguez-Lastra R, Gonzalez-Salazar F, Villalpando S, Zimmermann MB. The effects of fat loss after bariatric surgery on inflammation, serum hepcidin, and iron absorption: a prospective 6-mo iron stable isotope study. Am J Clin Nutr. 2016 Oct;104(4):1030-1038. doi: 10.3945/ajcn.115.115592. Epub 2016 Aug 24.
- Individual participant dataSharing planned: Undecided
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Ufuk Oguz Idiz, Assoc.Prof. principal investigator
Istanbul Training and Research Hospital
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Obesity, run by Istanbul Training and Research Hospital at 1 site in Turkey (Türkiye).
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 27 Jul 2021. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Turkey (Türkiye). Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Cytokine levels (time frame: 6 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT04540263, which also lists 3 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 27 Jul 2021.