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Sponsors and Collaborators: |
National Center for Research Resources (NCRR) Alzheimer's Association Pfizer Eisai Inc. |
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Information provided by: | National Institute on Aging (NIA) |
ClinicalTrials.gov Identifier: | NCT00006399 |
The goal of this study is to examine whether the administration of estrogen to post-menopausal women and women with mild to moderate Alzheimer's disease will enhance their memory and their capacity for learning.
Condition | Intervention | Phase |
---|---|---|
Alzheimer Disease |
Drug: Donepezil Drug: Estrogen Drug: Progesterone |
Phase II |
Study Type: | Interventional |
Study Design: | Treatment, Double-Blind, Placebo Control |
Official Title: | Estrogen Modulation Effects on Cholinergic Function in Normal Post-Menopausal Women and Patients With Alzheimer's Disease |
Estimated Enrollment: | 45 |
Study Start Date: | September 1999 |
Study Completion Date: | March 2004 |
Primary Completion Date: | March 2004 (Final data collection date for primary outcome measure) |
Estrogen (EST) may have significant benefits in preserving cognitive functioning in normal aging after menopause and in decreasing the incidence of Alzheimer's disease (AD). On a molecular level, EST has effects on a variety of cholinergic neuronal and receptor-mediated mechanisms that may be responsible for these beneficial effects. These neurons have critical relevance for the development of age-related cognitive changes and dementing disorders. However, little is known about the clinical relevance of EST-cholinergic interactions, either in normal aging or in AD.
The primary goal of this study is to test the hypothesis that three months of administration of EST to 1) normal post-menopausal women, and 2) female patients with mild-moderate AD who are concurrently treated with anticholinesterase therapy (donepezil), will positively change or blunt the negative and behavioral effects of drugs that block central cholinergic receptors (both muscarinic and nicotinic). Participants will be blindly placed on EST or placebo for three months each. After each three month period, they will be cognitively assessed after receiving single doses of the cholinergic antagonists scopolamine and mecamylamine. These results will have direct implications for the use of EST in post-menopausal women as well as interactive treatment with cholinergic drugs for AD. Researchers plan to recruit a total of 45 women (30 healthy, and 15 patients with AD).
NOTE: This study is only recruiting participants with Alzheimer's Disease at this time.
Ages Eligible for Study: | 45 Years to 85 Years |
Genders Eligible for Study: | Female |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
Exclusion Criteria:
United States, Vermont | |
Clinical Neuroscience Research Unit, University of Vermont | |
Burlington, Vermont, United States, 05401 |
Principal Investigator: | Paul A. Newhouse, M.D. | Memory Center, Department of Psychiatry, University of Vermont College of Medicine |
Responsible Party: | University of Vermont College of Medicine ( Paul A. Newhouse, M.D, Department of Psychiatry ) |
Study ID Numbers: | IA0023, 2R56AG021476 |
Study First Received: | August 18, 2000 |
Last Updated: | January 13, 2009 |
ClinicalTrials.gov Identifier: | NCT00006399 History of Changes |
Health Authority: | United States: Federal Government |
Alzheimer disease Estrogen therapy Post-menopausal women |
Estrogens Progesterone Hormone Antagonists Alzheimer Disease Hormones, Hormone Substitutes, and Hormone Antagonists Central Nervous System Diseases Cholinergic Agents Brain Diseases Neurodegenerative Diseases |
Hormones Cognition Disorders Delirium, Dementia, Amnestic, Cognitive Disorders Mental Disorders Progestins Donepezil Dementia Menopause Delirium |
Estrogens Progesterone Physiological Effects of Drugs Alzheimer Disease Nervous System Diseases Hormones, Hormone Substitutes, and Hormone Antagonists Central Nervous System Diseases Brain Diseases |
Neurodegenerative Diseases Hormones Pharmacologic Actions Delirium, Dementia, Amnestic, Cognitive Disorders Mental Disorders Progestins Dementia Tauopathies |