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Estrogen is a naturally occurring hormone produced in a woman's body. The purpose of this 15-month study is to determine the effectiveness of hormone replacement therapy in improving memory and the ability to live independently in postmenopausal women with Alzheimer's disease and without other dementias.
Patients who volunteer for this study will either receive a patch containing 17-ß-estradiol or will receive an inactive placebo patch. In addition, patients will be given either medroxyprogesterone or an inactive placebo pill. Neither the volunteers nor the study staff will know which type of patch or pill a patient receives. Patients must be generally healthy and have mild-to-moderate dementia. There must be a patient caregiver who can watch for side effects and ensure that the patient takes the study medications on schedule. Patients will undergo neuropsychological tests and an evaluation of the ability to live independently at each visit as well as laboratory evaluations, such as the taking of blood. Each visit will last approximately 3 hours. A total of 160 participants are being recruited.
Allocation: Randomized, Control: Placebo Control, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment
Transdermal estradiol, Medroxyprogesterone, Placebo Patch, Placebo
University of Wisconsin Memory Research Program
National Institute on Aging (NIA)
Published on BioPortfolio: 2014-07-24T14:33:39-0400
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A medicated adhesive patch placed on the skin to deliver a specific dose of medication into the bloodstream.
Misunderstanding among individuals, frequently research subjects, of scientific methods such as randomization and placebo controls.
An effect usually, but not necessarily, beneficial that is attributable to an expectation that the regimen will have an effect, i.e., the effect is due to the power of suggestion.
An electrophysiologic technique for studying cells, cell membranes, and occasionally isolated organelles. All patch-clamp methods rely on a very high-resistance seal between a micropipette and a membrane; the seal is usually attained by gentle suction. The four most common variants include on-cell patch, inside-out patch, outside-out patch, and whole-cell clamp. Patch-clamp methods are commonly used to voltage clamp, that is control the voltage across the membrane and measure current flow, but current-clamp methods, in which the current is controlled and the voltage is measured, are also used.
Steroidal compounds related to ESTRADIOL, the major mammalian female sex hormone. Estradiol congeners include important estradiol precursors in the biosynthetic pathways, metabolites, derivatives, and synthetic steroids with estrogenic activities.
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