Brown Adipose Tissue and Body Mass Index
Activation of Brown Adipose Tissue in Lean and Obese Men
In this study the investigators aim to investigate whether the sympathetic stimulation of BAT, as assessed with a 123I-metaiodobenzylguanidine single-photon emission computed tomography computed tomography scan, differs between lean and obese individuals, as an explanation for the diminished metabolic brown adipose tissue activity in obese subjects.
The investigators hypothesis is that sympathetic nervous system activity in the obese is diminished as compared to their leaner counterparts as an explanation for the diminished metabolic brown adipose tissue activity in the obese.
調査の概要
状態
詳細な説明
The sympathetic nervous system is the primary activator of Brown Adipose Tissue.
Obese humans are known to have less metabolically active brown adipose tissue as compared to their leaner counterparts.
The reason for this diminished metabolic brown adipose tissue activity is unknown.
However, a lower sympathetic nervous system activation to brown adipose tissue in the obese might explain a diminished metabolic brown adipose tissue.
Therefore, in this study, both the sympathetic nervous system activation to brown adipose tissue and the metabolic activity will be measured in lean and obese subjects.
sympathetic nervous system activity will be measured using 123I-metaiodobenzylguanidine single-photon emission computed tomography scans, metabolic activity will be measured using 18F- fluorodeoxyglucose positron emission tomography CT scans.
研究の種類
入学 (実際)
段階
- 適用できない
連絡先と場所
研究場所
-
-
-
Amsterdam、オランダ、1105AZ
- Academic Medical Center
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参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
Inclusion Criteria:
- Male
- Caucasian origin
- Subjects should be able and willing to give informed consent
- 18-40 years old
- BMI range of 19-25 kg/m2 (lean study subjects) or 28-40 kg/m2 (obese study subjects)
Exclusion Criteria:
- Renal failure (creatinine>135mmol/l)
- Daily use of prescription medication
研究計画
研究はどのように設計されていますか？
デザインの詳細
- 主な目的：防止
- 割り当て：ランダム化
- 介入モデル：並列代入
- マスキング：なし（オープンラベル）
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
|
他の：Lean subjects
Lean, young, healthy, Caucasian, male subjects
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|
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他の：Obese subjects
Obese, Young, Healthy, Caucasian, male subjects
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この研究は何を測定していますか？
主要な結果の測定
結果測定 |
時間枠 |
|---|---|
|
Difference in sympathetic stimulation to BAT between lean and obese individuals
時間枠：Participants will be followed for a mean duration of 2 weeks (the maximal time period between the two scans) The outcome measurements will be assessed when the last subject has been scanned approximately one year after starting the trial
|
Participants will be followed for a mean duration of 2 weeks (the maximal time period between the two scans) The outcome measurements will be assessed when the last subject has been scanned approximately one year after starting the trial
|
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Difference in correlation between sympathetic stimulation of BAT as assessed with 123I-MIBG SPECT scans and metabolic BAT activity as assessed with 18F-Fluorodeoxyglucose(FDG)- positron emission tomography(PET)-CT scan in lean and obese individuals
時間枠：Participants will be followed for a mean duration of 2 weeks (the maximal time period between the two scans) The outcome measurements will be assessed when the last subject has been scanned approximately one year after starting the trial.
|
The difference in correlation between sympathetic stimulation of BAT and metabolic BAT activity between lean and obese individuals.
|
Participants will be followed for a mean duration of 2 weeks (the maximal time period between the two scans) The outcome measurements will be assessed when the last subject has been scanned approximately one year after starting the trial.
|
協力者と研究者
研究記録日
主要日程の研究
研究開始
一次修了 (実際)
研究の完了 (実際)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (見積もり)
学習記録の更新
投稿された最後の更新 (見積もり)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。