Biology in Patients With Reflux Esophagitis (BENCH)
Biology in Patients With Reflux Esophagitis and Mucosal Impedance
GERD is a common condition in the western world. In most cases, the diagnostic is established by good response to empiric proton pump inhibitor (PPI) therapy. When the patient symptoms are refractory to therapy, multiple invasive tests are available. The results of those tests (EGD, manometry, Ph monitoring and impedance) are clues that the physician use together to establish the diagnostic. No test however can be use alone because of their poor specificity and sensitivity. Recently, microscopy has been used to detect dilated intercellular space in between distal esophageal cells tissue; unfortunately this marker again failed to diagnose GERD.
In search of more sensitive and specific markers of GERD, we propose to assess if acid exposure affects: 1) gene and proteins expression in the esophageal/post-cricoid area tissue; and 2) local impedance of the mucosa. The secondary aim of this proposal is to determine if correlation exists between the two approaches.
調査の概要
状態
条件
研究の種類
入学 (実際)
連絡先と場所
研究場所
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-
Tennessee
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Nashville、Tennessee、アメリカ、37232
- Vanderbilt University Digestive Diseases 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
サンプリング方法
調査対象母集団
説明
Inclusion Criteria (GERD Cases):
- Male or female
- Ages 18 years or older
- Undergoing EGD as standard of care at Vanderbilt's Digestive Diseases Center
- Esophageal erosion detected at EGD
- Abnormal pH monitoring
Inclusion Criteria (Controls):
- Male or female
- Ages 18 years or older
- Undergoing EGD as standard of care at Vanderbilt's Digestive Diseases Center
- No complaints or history o heartburn or acid regurgitation
- No erosion at EGD
- Normal pH monitoring
Exclusion Criteria:
- Less than 18 years of age
- Unable to provide informed consent
- Use of acid suppressive therapy within last 14 days
- known history of Barrett's esophagus, gastric surgery, alcoholism, significant motility condition
- contraindications to biopsy such as taking anticoagulants other than aspirin (coumadin, plavix) or allergies to local anesthetic
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 |
|---|
|
Controls
No complaints or history of heartburn or acid regurgitation; no erosion at EGD; and normal pH monitoring
|
|
GERD Cases
Patients with esophageal erosion at EGD and abnormal pH monitoring.
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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 |
|---|---|---|
|
Change in gene and protein expression due to acid exposure in the esophagus
時間枠：Chronic exposure
|
We are assessing if acid exposure affects gene and protein expression in the esophageal/post-cricoid area tissue
|
Chronic exposure
|
|
Change in local impedance of the esophageal mucosa
時間枠：Chronic exposure
|
We are assessing if acid exposure affects local impedance of the mucosa
|
Chronic exposure
|
協力者と研究者
出版物と役立つリンク
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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