Clinical trial NCT04540263: Cytokine Levels of Patients Who Underwent Obesity Surgery
Official title: Evaluation of Blood Cytokine Levels of Patients Who Underwent Sleeve Gastrectomy and Gastric Bypass Operations Due to Obesity
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Obesity
Keywords: Sleeve Gastrectomy
Gastric bypass
Flow-cytometry
Cytokine
Lead sponsor: Istanbul Training and Research Hospital
Sponsor class: OTHER_GOV
First posted: 2020-09-07
Enrollment: 30
Sex: ALL
Minimum age (years): 18
Maximum age (years): 80
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Observational model: CASE_ONLY
Time perspective: PROSPECTIVE
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

Brief 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. 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

Eligibility criteria: 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

Primary outcomes:
measure: Cytokine levels
timeFrame: 6 months
Secondary outcomes:
measure: Weight changes
timeFrame: 6 months
Other outcomes:
Locations:
city: Istanbul
country: Turkey
facility: Istanbul Training and Research Hospital
Study officials:
affiliation: Istanbul Training and Research Hospital
name: Ufuk Oguz Idiz, Assoc.Prof.
role: PRINCIPAL_INVESTIGATOR
References:
citation: 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.
citation: Shimizu 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.
citation: Cepeda-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.