Alterations in Cognitive Function and Cerebral Blood Flow After Conversion From Immediate Release Tacrolimus to Slow Release Envarsus
2021年4月26日 更新者：Aditi Gupta, MD、University of Kansas Medical Center
The purpose of this study is to learn if conversion from immediate release tacrolimus to Envarsus improves cerebral blood flow, brain blood flow response to exercise, and cognition.
研究概览
详细说明
Each patient will have two study assessments: one at baseline and another one at 12 weeks after the baseline assessment.
Each assessment may be divided into 2 visits to accommodate the MRI and TCD (Transcranial Doppler ultrasound).
Detailed medical history will be extracted from the patients' medical records, interviews and questionnaires.
We will obtain brain MRI (without gadolinium contrast) in enrolled patients.
Neuropsychological test (NP) tests will include a standard battery to detect subclinical changes in cognition which can be missed by screening tests like the mini mental state exam.
研究类型
观察性的
注册 (实际的)
30
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
-
-
Kansas
-
Kansas City、Kansas、美国、66160
- University of Kansas Medical Center
-
-
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
18年 至 85年 (成人、年长者)
接受健康志愿者
不
有资格学习的性别
全部
取样方法
非概率样本
研究人群
Patients will be recruited from the KUMC kidney transplant clinic.
Both male and female kidney transplant recipients aged 18 to 85 will be included.
描述
Inclusion Criteria:
- age between 18 and 85 years
- English speaking (NP tests will be in English);
- able to sign informed consent
- able to arrange transportation to and from study sites
- without acute stroke, concussion or traumatic brain injury
- received a kidney transplant at least 12 weeks before recruitment
- stable kidney function with serum creatinine <3mg/dl
Exclusion Criteria:
- are claustrophobic or have other contra-indication for MRI
- have hearing or visual impairment
- are unable to read, write, speak or understand English
- have uncontrolled psychosis or seizure disorder or are currently using antipsychotics or anti-epileptics
- dual organ transplant
- oxygen-dependent chronic obstructive pulmonary disease
- diagnosis of dementia
- unable to perform exercise on the Nustep (muscle weakness or cardiac safety concern)
- uncontrolled blood pressure
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
队列和干预
团体/队列 |
干预/治疗 |
|---|---|
|
Study Arm
The patients in the study arm will be converted from immediate release Tacrolimus to Envarsus.
After obtaining informed consent, participants will undergo baseline tests for cognitive function and cerebral blood flow.
After 12 weeks, cognition and brain blood flow will be assesses again in all enrolled patients.
|
Patients will then be randomized in the ratio of 2:1 with 20 being in the study arm and 10 in the control arm.
Envarsus will be prescribed by the transplant team per conversion guidelines.
The transplant team will monitor drug levels, per the dosing guidelines.
|
|
Control Arm
Patients in the control arm will remain on the immediate release Tacrolimus.
After obtaining informed consent, participants will undergo baseline tests for cognitive function and cerebral blood flow.
After 12 weeks, cognition and brain blood flow will be assesses again in all enrolled patients.
|
患者的医生将根据标准做法开药方。
其他名称：
|
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 |
|---|---|---|
|
Change in cognitive function using a battery of neuropsychological tests
大体时间：Change from Baseline to Week 12
|
Battery aggregate scores include such tests as: Mini Mental Sate Exam, Montreal Cognitive Assessment, Digit Span, Logical Memory, Category Fluency, Trail Making, Digit Symbol, Block Design, Stroop, Buschke Free and Cued Reminding Test.
|
Change from Baseline to Week 12
|
|
Change in cerebral blood flow
大体时间：Change from Baseline to Week 12
|
including brain blood flow response curve to exercise or cerebral reactivity
|
Change from Baseline to Week 12
|
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。
调查人员
- 首席研究员：Aditi Gupta, MD、University of Kansas Medical Center
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 (实际的)
2018年10月25日
初级完成 (实际的)
2021年3月3日
研究完成 (实际的)
2021年3月3日
研究注册日期
首次提交
2018年9月13日
首先提交符合 QC 标准的
2018年10月9日
首次发布 (实际的)
2018年10月11日
研究记录更新
最后更新发布 (实际的)
2021年4月27日
上次提交的符合 QC 标准的更新
2021年4月26日
最后验证
2021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.
他克莫司的临床试验
-
Ain Shams UniversityNational Hepatology & Tropical Medicine Research Institute完全的