Effect of Dapagliflozin on Inflammation and Endothelial Function
2020年4月7日 更新者:Mandeep Bajaj、Baylor College of Medicine
The Effect of Dapagliflozin on Inflammation and Endothelial Function
Sodium-glucose cotransporter 2 (SGLT-2) inhibitors reduce hyperglycemia and improve peripheral insulin sensitivity by ameliorating glucotoxicity.
Insulin resistance in type 2 diabetes (T2DM) is associated with endothelial dysfunction and vascular inflammation.
Thus strategies to improve insulin sensitivity and lower glucotoxicity may improve endothelial inflammation and vascular inflammation.
However, the effects of these agents on vascular inflammation and endothelial function is not known in patients with type 2 diabetes although anti-inflammatory properties have been demonstrated in various animal models.
In the present study the investigators will assess if dapagliflozin treatment for 12 weeks decreases monocyte inflammation and improves endothelial function in patients with type 2 diabetes on metformin monotherapy.
調査の概要
詳細な説明
The insulin-resistant state of type 2 diabetes mellitus (T2DM) is largely mediated by inflammatory pathways affecting skeletal muscle which is the primary site of whole body insulin resistance.
Nuclear factor kappa B (NFkappaB) regulates pro-inflammatory cytokines which ultimately impair skeletal muscle insulin signaling and fatty acid oxidation; its activity reflects overall inflammatory tone in skeletal muscle.
Recent human studies confirm that NFkappaB is elevated in the skeletal muscle of T2DM human subjects.
Furthermore, the same inflammatory processes and signaling impairments contribute to worsening endothelial dysfunction, which is an independent predictor for future cardiovascular events in T2DM.
In addition, these SGLT-2 Inhibitors reduce body weight, visceral adiposity, systolic and diastolic blood pressure, microalbuminuria, and oxidative stress.
However, there are no studies examining the effects of SGLT-2 inhibitor therapy on NFkappaB and other inflammatory mediators in humans with T2DM.
Moreover, no studies have examined the effect of SGLT-2 inhibitor therapy on endothelial function in this population.
In the present study the investigators will assess whether dapagliflozin treatment for 12 weeks reduces monocyte inflammation and improves endothelial dysfunction in patients with type 2 diabetes on metformin monotherapy.
研究の種類
介入
入学 (実際)
17
段階
- フェーズ 4
連絡先と場所
このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。
研究場所
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Texas
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Houston、Texas、アメリカ、77030
- Baylor College of Medicine
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参加基準
研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。
適格基準
就学可能な年齢
21年~70年 (大人、高齢者)
健康ボランティアの受け入れ
いいえ
受講資格のある性別
全て
説明
Inclusion Criteria:
- Provision of informed consent prior to any study specific procedures
Men and women, ages 21 to 70 years. i) Women of childbearing potential must be using an acceptable method of contraception to avoid pregnancy throughout the study in such a manner that the risk of pregnancy is minimized.
ii) Women must not be pregnant or breastfeeding.
- Patients with Type 2 Diabetes Mellitus with the following parameters at study entry: hemoglobin A1c ranging from 7.0% to 9.0% and a fasting blood glucose less than or equal to 200 mg/dL.
- Patients must be on a stable dose of Metformin therapy for 3 months; the dose of metformin will not change for the duration of the study.
- Patients are allowed, but not required, to be on statins, Angiotensin Converting Enzyme (ACE) inhibitors, and angiotensin-receptor blockers at doses that have been stable for at least the last 3 months prior to enrollment in the study. Doses will not be changed for the duration of the study.
- Patients must have a Body Mass Index between 27-35 kg/m2
- Patients must have a stable body weight for three months prior to enrollment in the study.
- Patients must have a Creatinine Clearance greater than 60 mL/min (calculated by Cockcroft-Gault formula).
- Patients must have Hematocrit greater than or equal to 34%; Serum creatinine less than1.5 mg/dl in men and 1.4 mg/dl in women and Creatinine Clearance greater than 60 ml/min; and serum aspartate aminotransferase (AST) less than 2.5 times upper limit of normal, serum alanine transaminase (ALT) less than 2.5 times upper limit of normal, serum alkaline phosphatase less than 2.5 times upper limit of normal.
Exclusion Criteria:
- History of Type 1 diabetes mellitus
- Women who are pregnant or breastfeeding
- Patients receiving lipid-lowering medications other than statins within the last 3 months.
- Patient receiving SGLT-2 inhibitors, incretin therapy, dipeptidyl peptidase 4 (DPP-4) inhibitors, thiazolidinediones, insulin, sulfonylureas, alpha-glucosidase inhibitors, corticosteroids, immunosuppressive therapy, thiazide or loop diuretics, or hormone replacement therapy within the last 3 months .
- Patient must stop treatment with nonsteroidal anti-inflammatory drugs (NSAID) and antioxidant vitamin supplements at least one week prior to the start of the study
- Patients with diabetic gastroparesis.
- Patients with current tobacco use.
- Patients with active malignancy.
- Patients with history of urinary bladder cancer
- Patients with a history of clinically significant heart disease, peripheral vascular disease, or pulmonary disease will not be studied
- Subjects with a history of any serious hypersensitivity reaction to dapagliflozin.
- Prisoners, or subjects who are involuntarily incarcerated.
- Subjects who are compulsorily detained for treatment of either a psychiatric or physical (eg, infectious disease) illness.
- Patients with significant cardiac,hepatic or renal disease (Creatinine Clearance less than 60 mL/min calculated by Cockcroft-Gault formula) will be excluded.
研究計画
このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。
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:基礎科学
- 割り当て:ランダム化
- 介入モデル:並列代入
- マスキング:4倍
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
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実験的:Dapagliflozin
Dapagliflozin 5 mg daily by mouth for 2 weeks followed by 10 mg by mouth daily for 10 weeks
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Patients with Type 2 diabetes will be randomized to receive dapagliflozin 5 mg daily for 2 weeks followed by10 mg daily for 10 weeks by mouth or matching placebo for 12 weeks.
All subjects will receive measurements of fasting plasma glucose, Free Fatty Acids, inflammatory markers and adipocytokines, monocyte inflammation, as well as ultrasound assessment of flow-mediated dilatation (FMD) of the brachial artery at baseline and after 12 weeks of drug treatment with either dapagliflozin or placebo.
他の名前:
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プラセボコンパレーター:Placebo
Placebo tablets by mouth daily for 12 weeks
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Patients with Type 2 diabetes will be randomized to receive dapagliflozin 5 mg daily for 2 weeks followed by10 mg daily for 10 weeks by mouth or matching placebo for 12 weeks.
All subjects will receive measurements of fasting plasma glucose, Free Fatty Acids, inflammatory markers and adipocytokines, monocyte inflammation, as well as ultrasound assessment of flow-mediated dilatation (FMD) of the brachial artery at baseline and after 12 weeks of drug treatment with either dapagliflozin or placebo.
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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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Monocyte Inflammatory Protein Nuclear Factor Kappa-B (NFkappaB) (%)
時間枠:12 weeks
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The percentage change in monocyte inflammatory proteins NFkappaB (%) from baseline in patients with type 2 diabetes.
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12 weeks
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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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Arterial Flow Mediated Dilatation (%)
時間枠:12 weeks
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The percentage change in arterial flow mediated dilation (%) from baseline as measured by ultrasound in patients with type 2 diabetes.
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12 weeks
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協力者と研究者
ここでは、この調査に関係する人々や組織を見つけることができます。
研究記録日
これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。
主要日程の研究
研究開始
2015年11月1日
一次修了 (実際)
2019年3月1日
研究の完了 (実際)
2019年3月1日
試験登録日
最初に提出
2015年11月17日
QC基準を満たした最初の提出物
2015年11月18日
最初の投稿 (見積もり)
2015年11月20日
学習記録の更新
投稿された最後の更新 (実際)
2020年4月8日
QC基準を満たした最後の更新が送信されました
2020年4月7日
最終確認日
2020年4月1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
Dapagliflozinの臨床試験
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