Role of Endoplasmic Reticulum Stress in the Pathophysiology of Type 2 Diabetes (GLUCOSTRESS)
The purpose of this study is to investigate whether Endoplasmic Reticulum (ER) stress pathway is activated in peripheral tissues (adipose tissue) in insulin resistant diabetic patients compared to healthy subjects normoglycemic matched for age and sex an to investigate whether ER stress pathway can be activated in response to insulin. Indeed, some preliminar on rates studies shows that ER stress pathway is activated by insulin in liver and adipose tissue showing that hyperinsulinemia might help trigger stress path ER.
For this, we propose a case control study of type 2 diabetic patients vs control subjects in which markers of ER stress will be evaluated from abdominal subcutaneous adipose tissue obtained before and after euglycemic hyperinsulinemic. We chose to consider adipose tissue subcutaneous rather than visceral adipose tissue for obvious reasons of lesser invasiveness.
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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Paris、フランス、75010
- Saint-Louis Hospital
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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:
- Specific criteria for diabetic patients:
- Having type 2 diabetes for at least 6 months
- HbA1c ≤ 8%
- Treated by lifestyle and dietary rules associated or not to a hypoglycemic therapy (metformin and / or sulfamid) and / or insulin secretors dependent glucose as inhibitors of DPP4 (dipeptidyl peptidase-4): Vildagliptin, Sitagliptin, Saxagliptin
- No modification of hypoglycemic therapy and / or insulin secretors for at least 3 months
Specific criteria for control subjects:
- Nondiabetic subjects (fasting blood glucose <7.0 mmol / l without hypoglycemic treatment).
- The control subjects should be matched to patients for age (± 5 years), sex, and BMI (± 2 kg/m2).
Common criteria for patients and control subjects:
- Aged 18 to 60 years
- Body Mass Index between 25 and 35 kg/m2
- Accepting the constraints of the protocol and who signed the informed consent
- Systolic blood pressure < 160 mmHg, diastolic blood pressure < 90 mm Hg (with or without antihypertensive treatment)
- Resting heart rate between 55 and 100 beats/min.
- Normal laboratory tests or not clinically significant abnormality for NFS platelets, PT, aPTT, fibrinogen ALT, AST, GGT, Serum electrolytes, urea, creatinine, Uric acid Triglycerides, total cholesterol, HDL cholesterol
- HCG negative blood (for female subjects)
- Affiliated to the Social Security.
Exclusion Criteria:
- Current infections or recent infections (<10 days)
- Neoplastic disorders (with the exception of carcinoma in situ of the cervix or cutaneous epithelioma), haematological, cardiovascular, psychiatric, neurological
- Poisoning smoking (>10 cigarettes per day, what ever the duration of intoxication)
- Treatment with insulin or glitazones Pregnancy, Breastfeeding
- Body Mass Index > 35 kg/m2
- Any drug taken for less than 8 days without the inclusion of minor analgesics (aspirin, paracetamol), anti-hypertensive medications, oral hypoglycemic (metformin and sulphonylureas) and insulin secretors dependent glucose as inhibitors of DPP4 (dipeptidyl peptidase-4) and oral contraceptives.
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
- 観測モデル：ケースコントロール
- 時間の展望：断面図
コホートと介入
グループ/コホート |
介入・治療 |
|---|---|
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control
control subjects with :
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case
Diabetic patients with :
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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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Show an increase in markers of ER stress in fasting patients with type 2 diabetes
時間枠：2 days
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Protein expression markers of ER stress pathway BiP / GRP 78, CHOP, ATF4 EDEM and XBP-1
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2 days
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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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Assess whether insulin induces an increase in markers of ER stress
時間枠：2 days
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Insulin sensitivity
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2 days
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Insulin secretion in response to glucose infusion
時間枠：2 days
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2 days
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Insulin secretion in response to arginine infusion
時間枠：2 days
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2 days
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Lipolysis on insulin
時間枠：2 days
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2 days
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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 (予想される)
研究の完了 (予想される)
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。
2型糖尿病の臨床試験
介入なしの臨床試験
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University of California, San FranciscoSan Francisco Veterans Affairs Medical Center; Tobacco Related Disease Research Program完了
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