- ICH GCP
- 미국 임상 시험 레지스트리
- 임상시험 NCT05080205
Effects of Morbid Obesity and Bariatric Surgery on Brain Inflammation, Insulin Resistance and Central Reward System (BariBrainPET)
Effects of Morbid Obesity and Bariatric Surgery on Brain Inflammation, Insulin Resistance and Activation of Central Reward System Studied Using PET- and MRI-imaging
Background: Morbid obesity is associated with decreased brain µ-opioid receptor availability, possibly resulting in higher food intake needed to gain pleasure from eating. This decrease seems to normalize already 6 months after bariatric surgery, but the longer-term effects have not been studied. Obesity and insulin resistance result in significantly increased brain insulin-stimulated glucose uptake, whereas in every other tissue glucose uptake is lower. One possible explanation to this could be central inflammation and activation of brain glial cells, which has been shown to occur in animal models of obesity. Obesity has also been shown to associate with increased risk of Alzheimer's disease and cognitive decline in several studies.
Aims: The first objective of this study is to both study the effects of bariatric surgery as well as compare the effects of gastric bypass and sleeve gastrectomy on food-associated pleasure, extending the follow-up period to 2 years postoperatively. The second aim is to investigate the effect of morbid obesity and weight loss on brain inflammation and gliosis and its association with increased brain insulin-stimulated glucose uptake. Furthermore, association of obesity, insulin resistance, central inflammation and neurocognitive dysfunction are evaluated.
연구 개요
상세 설명
연구 유형
등록 (실제)
단계
- 해당 없음
연락처 및 위치
연구 장소
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Turku, 핀란드, 20520
- Turku PET Centre
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참여기준
자격 기준
공부할 수 있는 나이
건강한 자원 봉사자를 받아들입니다
연구 대상 성별
설명
Inclusion criteria:
Morbidly obese group
- BMI 35.0-45.0 kg/m2, or BMI 32.0-45.0 kg/m2 and diagnosed diabetes
- Age 18-60 years
- Eligible to bariatric surgery evaluated according to normal treatment paradigm
Non-obese controls
- BMI 18-27 kg/m2
- Age 18-60 years
- Fasting plasma glucose ≤6.1 mmol/L
- Normal values in 2-hour oral glucose tolerance test
Exclusion criteria:
Morbidly obese group
- Metal objects in the body (including pacemakers, metallic artificial valve prostheses, inner ear implants, surgical clipses, braces, foreign fragments)
- Previous participation in PET studies
- Pregnancy
- Poor compliance, alcohol or drug abuse
- Weight over 150 kg or waist circumference over 150 cm
- Diabetes with fasting glucose levels ≥7.0 mmol/L, or treatment with insulin
- Any chronic disease, medication or condition that could create a hazard to subject safety, endanger study procedures or interfere with the interpretation of results.
Non-obese controls
- Metal objects in the body (including pacemakers, metallic artificial valve prostheses, inner ear implants, surgical clipses, braces, foreign fragments)
- Previous participation in PET studies
- Pregnancy
- Poor compliance, alcohol or drug abuse
- Smoking
- History of eating disorders, drastic weight-gain or weight-loss
- History of psychiatric disorders
- Any chronic disease, medication or condition that could create a hazard to subject safety, endanger study procedures or interfere with the interpretation of results
공부 계획
연구는 어떻게 설계됩니까?
디자인 세부사항
- 주 목적: 치료
- 할당: 무작위화되지 않음
- 중재 모델: 단일 그룹 할당
- 마스킹: 없음(오픈 라벨)
무기와 개입
참가자 그룹 / 팔 |
개입 / 치료 |
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실험적: Morbidly obese subjects
Bariatric surgery (Roux-en-Y gastric bypass or sleeve gastrectomy)
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Roux-en-Y gastric bypass or sleeve gastrectomy, chosen based on routine evaluation process
다른 이름들:
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간섭 없음: Control subjects
Non-obese controls are only studied at baseline
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연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
측정값 설명 |
기간 |
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Change in central inflammation
기간: Controls: 0 months; Morbidly obese: preoperatively, 6 months postoperatively
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Assessment of brain glial cell activation using [11C]-PK11195 tracer and positron emission tomography
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Controls: 0 months; Morbidly obese: preoperatively, 6 months postoperatively
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2차 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
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Changes in central reward system using fMRI imaging
기간: Controls: 0 months; Morbidly obese: preoperatively, 6 months, 12 months, 24 months postoperatively
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Assessment of brain reward system activation after visual/taste cues using functional MRI
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Controls: 0 months; Morbidly obese: preoperatively, 6 months, 12 months, 24 months postoperatively
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Changes in brain μ-opioid receptor availability using PET imaging
기간: Controls: 0 months; Morbidly obese: preoperatively, 6 months, 12 months postoperatively
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Assessment of brain μ-opioid receptor availability using [11C]-carfentanil tracer and positron emission tomography
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Controls: 0 months; Morbidly obese: preoperatively, 6 months, 12 months postoperatively
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Changes in cognitive function studied with testing
기간: Controls: 0 months; Morbidly obese: preoperatively, 6 months, 12 months, 24 months postoperatively
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Neuropsychological testing focusing on memory, decision-making and inhibition
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Controls: 0 months; Morbidly obese: preoperatively, 6 months, 12 months, 24 months postoperatively
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Changes in whole-body insulin sensitivity usign FDG-PET imaging
기간: Controls: 0 months; Morbidly obese: preoperatively, 6 months postoperatively
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Assessment of whole-body insulin sensitivity using hyperinsulinemic, euglycemic clamp
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Controls: 0 months; Morbidly obese: preoperatively, 6 months postoperatively
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Changes in tissue-specific insulin sensitivity using FDG-PET imaging
기간: Controls: 0 months; Morbidly obese: preoperatively
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Assessment of insulin-stimulated glucose uptake in the brain, liver, skeletal muscle and adipose tissue by performing positron emission tomography with [18F]-fluorodeoxyglucose tracer during hyperinsulinemic, euglycemic clamp
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Controls: 0 months; Morbidly obese: preoperatively
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공동 작업자 및 조사자
수사관
- 수석 연구원: Pirjo Nuutila, MD, PhD, Turku University Hospital
연구 기록 날짜
연구 주요 날짜
연구 시작 (실제)
기본 완료 (실제)
연구 완료 (예상)
연구 등록 날짜
최초 제출
QC 기준을 충족하는 최초 제출
처음 게시됨 (실제)
연구 기록 업데이트
마지막 업데이트 게시됨 (실제)
QC 기준을 충족하는 마지막 업데이트 제출
마지막으로 확인됨
추가 정보
이 연구와 관련된 용어
추가 관련 MeSH 약관
기타 연구 ID 번호
- BariBrain-PET
- T153/2018 (기타 식별자: The Hospital District of Southwest Finland)
개별 참가자 데이터(IPD) 계획
개별 참가자 데이터(IPD)를 공유할 계획입니까?
IPD 계획 설명
IPD 공유 지원 정보 유형
- 연구 프로토콜
- 통계 분석 계획(SAP)
- 정보에 입각한 동의서(ICF)
- 임상 연구 보고서(CSR)
약물 및 장치 정보, 연구 문서
미국 FDA 규제 의약품 연구
미국 FDA 규제 기기 제품 연구
이 정보는 변경 없이 clinicaltrials.gov 웹사이트에서 직접 가져온 것입니다. 귀하의 연구 세부 정보를 변경, 제거 또는 업데이트하도록 요청하는 경우 register@clinicaltrials.gov. 문의하십시오. 변경 사항이 clinicaltrials.gov에 구현되는 즉시 저희 웹사이트에도 자동으로 업데이트됩니다. .
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