Confocal Endomicroscopy During Endoscopy
Confocal Endomicroscopy in Patients Undergoing Endoscopy
The main objective of this study is to determine the role of epithelial cell homeostasis in the pathogenesis of intestinal diseases.
Background: Alterations in intestinal barrier function may play a significant role in the pathogenesis of chronic intestinal diseases such as inflammatory bowel disease (IBD). The intestinal epithelium functions as a barrier to the luminal contents, thereby preventing undesirable solutes, micro-organisms and other luminal antigens from entering the body. Confocal endomicroscopy has recently been shown that increased epithelial cell shedding may contribute to increased intestinal permeability, at least locally. In our study, we want to determine the contribution of epithelial cell shedding to intestinal permeability in vivo in patients with inflammatory bowel disease compared to controls.
Scope:
In inflammatory bowel disease patients and controls (patients undergoing endoscopy for other indications).
Methods:
We will perform confocal endoscopy during the patient's endoscopic procedure.
Procedure:
The patient will receive intravenous fluorescein, followed by confocal imaging of the gastrointestinal tissue. The images are captured on the computer. The proposed study will provide important insights into epithelial cell shedding as a contributor to altered intestinal permeability.
調査の概要
研究の種類
入学 (実際)
連絡先と場所
研究場所
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Alberta
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Edmonton、Alberta、カナダ、T6G 2X8
- University of Alberta
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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
サンプリング方法
調査対象母集団
説明
Inclusion Criteria for patients includes:
- Subjects over 18 years of age.
- Subjects undergoing endoscopic procedures such as gastroscopy, colonoscopy, endoscopic retrograde cholangiopancreatography and endoscopic ultrasound will all be included.
Exclusion Criteria:
- Under 18 years of age.
- Cognitively impaired.
- Residing in institutions (eg. prison, extended care facility)
- Employees of research(s)' organization
- In emergency or life-threatening situations
- Have language barriers (eg. illiterate, not English-speaking, dysphasic) preventing adequate consent process
- Resides in another country
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
コホートと介入
グループ/コホート |
介入・治療 |
|---|---|
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Control
In patients undergoing endoscopy for indications other than Crohn's disease or ulcerative colitis
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Patients will undergo confocal endomicroscopy during their endoscopy, and findings of the confocal endomicroscopy in the control group will be compared to the diseased group.
他の名前：
Patients will undergo confocal endomicroscopy during their endoscopy, and findings of the confocal endomicroscopy in the diseased group will be compared to the control.
他の名前：
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Diseased group
Patients with Crohn's disease or ulcerative colitis undergoing endoscopy.
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Patients will undergo confocal endomicroscopy during their endoscopy, and findings of the confocal endomicroscopy in the control group will be compared to the diseased group.
他の名前：
Patients will undergo confocal endomicroscopy during their endoscopy, and findings of the confocal endomicroscopy in the diseased group will be compared to the control.
他の名前：
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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 |
メジャーの説明 |
時間枠 |
|---|---|---|
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The intestinal morphology as visualized using confocal laser endomicroscopy
時間枠：3 years.
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Intestinal morphology as measured by epithelial cells and gaps, presence of bacteria in the epithelial lining and the lamina propria will be quantitated.
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3 years.
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二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Clinical outcome and pathologic/molecular correlation with intestinal morphology
時間枠：3 years.
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The clinical outcomes of inflammatory bowel patients, location and severity of their disease, and correlation with molecular studies including tissue cytokine levels will be studied.
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3 years.
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協力者と研究者
スポンサー
出版物と役立つリンク
一般刊行物
- Liu JJ, Wong K, Thiesen AL, Mah SJ, Dieleman LA, Claggett B, Saltzman JR, Fedorak RN. Increased epithelial gaps in the small intestines of patients with inflammatory bowel disease: density matters. Gastrointest Endosc. 2011 Jun;73(6):1174-80. doi: 10.1016/j.gie.2011.01.018. Epub 2011 Mar 11.
- Turcotte JF, Wong K, Mah SJ, Dieleman LA, Kao D, Kroeker K, Claggett B, Saltzman JR, Wine E, Fedorak RN, Liu JJ. Increased epithelial gaps in the small intestine are predictive of hospitalization and surgery in patients with inflammatory bowel disease. Clin Transl Gastroenterol. 2012 Jul 26;3(7):e19. doi: 10.1038/ctg.2012.13.
- Liu JJ, Davis EM, Wine E, Lou Y, Rudzinski JK, Alipour M, Boulanger P, Thiesen AL, Sergi C, Fedorak RN, Muruve D, Madsen KL, Irvin RT. Epithelial cell extrusion leads to breaches in the intestinal epithelium. Inflamm Bowel Dis. 2013 Apr;19(5):912-21. doi: 10.1097/MIB.0b013e3182807600.
- Turcotte JF, Kao D, Mah SJ, Claggett B, Saltzman JR, Fedorak RN, Liu JJ. Breaks in the wall: increased gaps in the intestinal epithelium of irritable bowel syndrome patients identified by confocal laser endomicroscopy (with videos). Gastrointest Endosc. 2013 Apr;77(4):624-30. doi: 10.1016/j.gie.2012.11.006. Epub 2013 Jan 26.
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 (実際)
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
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