Evaluating Simvastatin's Potential Role in Therapy (ESPRIT)
The purpose of this study is to see how simvastatin, a cholesterol lowering drug, affects processes related to the development of Alzheimer's disease, including: 1) levels of a substance called beta-amyloid 42 found in the fluid surrounding the brain, 2) blood flow in the brain, 3) inflammation in the brain, and 4) the brain's handling of cholesterol.
|Study Design:||Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
|Official Title:||Effect of Statins on Pathobiology of Alzheimer's Disease|
- Changes in cerebrospinal fluid beta-amyloid levels [ Time Frame: 9 months ] [ Designated as safety issue: No ]
- Changes in biomarkers of CNS cholesterol metabolism, inflammatory markers, and cerebral perfusion [ Time Frame: 9 months ] [ Designated as safety issue: No ]
- Changes in cognitive function [ Time Frame: 9 months ] [ Designated as safety issue: No ]
|Study Start Date:||February 2005|
|Study Completion Date:||June 2009|
|Primary Completion Date:||June 2009 (Final data collection date for primary outcome measure)|
40 mg tablet each night for one month, then 80 mg for 8 months
Other Name: Zocor
|Placebo Comparator: 2||
Matching tablet each night for 9 months
Some studies suggest that statin medications, which are a group of cholesterol-lowering medicines, may help prevent Alzheimer's disease. However, this has not been proven in humans. The purpose of this study is to see how simvastatin affects substances in the body called beta-amyloid 40 and beta-amyloid 42, as well as blood flow to the brain. These substances are found in both the brain and the fluid around the brain and spinal cord. High amounts of these substances may be associated with a greater risk of getting Alzheimer's disease.
The ESPRIT study will include 100 middle-aged adults (35-69 yrs) who have a parent with documented Alzheimer's disease. This study will see how the use of a particular statin medication, simvastatin, affects spinal fluid levels of beta-amyloid, inflammation, and cholesterol. In addition, these changes will be compared to changes in memory and thinking skills monitored throughout the study. Fifty of the ESPRIT subjects will also participate in the MRI substudy, which is examining the effects of the study medication on blood flow to structures in the brain that are associated with Alzheimer's disease.
Participants will take part in 5 visits (and an additional 2 visits, if participating in the MRI substudy) over the course of 9 months. Participants will undergo fasting blood tests (baseline, month 3, and month 9 visits), complete a medical history questionnaire (baseline), complete medication side effect review through questionnaire and/or blood sample (all visits), undergo lumbar puncture procedure (baseline and month 9 visits), complete memory testing (baseline, month 3 and month 9 visits), and MRI procedure (baseline and month 9 visits), if participating in MRI substudy. Participants will be randomly assigned to receive either simvastatin or a placebo each night for 9 months.
|United States, Wisconsin|
|University of Wisconsin|
|Madison, Wisconsin, United States, 53705|
|Principal Investigator:||Cynthia M. Carlsson, MD, MS||University of Wisconsin School of Medicine and Public Health|