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.
研究概览
详细说明
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.
研究类型
介入性
注册 (实际的)
17
阶段
- 第四阶段
联系人和位置
本节提供了进行研究的人员的详细联系信息,以及有关进行该研究的地点的信息。
学习地点
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Texas
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Houston、Texas、美国、77030
- Baylor College of Medicine
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参与标准
研究人员寻找符合特定描述的人,称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。
资格标准
适合学习的年龄
21年 至 70年 (成人、年长者)
接受健康志愿者
不
有资格学习的性别
全部
描述
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.
学习计划
本节提供研究计划的详细信息,包括研究的设计方式和研究的衡量标准。
研究是如何设计的?
设计细节
- 主要用途:基础科学
- 分配:随机化
- 介入模型:并行分配
- 屏蔽:四人间
武器和干预
参与者组/臂 |
干预/治疗 |
|---|---|
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实验性的: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.
其他名称:
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安慰剂比较: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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研究衡量的是什么?
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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Monocyte Inflammatory Protein Nuclear Factor Kappa-B (NFkappaB) (%)
大体时间: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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次要结果测量
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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Arterial Flow Mediated Dilatation (%)
大体时间: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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合作者和调查者
在这里您可以找到参与这项研究的人员和组织。
研究记录日期
这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查,以确保它们在发布到公共网站之前符合特定的质量控制标准。
研究主要日期
学习开始
2015年11月1日
初级完成 (实际的)
2019年3月1日
研究完成 (实际的)
2019年3月1日
研究注册日期
首次提交
2015年11月17日
首先提交符合 QC 标准的
2015年11月18日
首次发布 (估计)
2015年11月20日
研究记录更新
最后更新发布 (实际的)
2020年4月8日
上次提交的符合 QC 标准的更新
2020年4月7日
最后验证
2020年4月1日
更多信息
此信息直接从 clinicaltrials.gov 网站检索,没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求,请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改,我们的网站上也会自动更新.