Estrogen Use in Protection From Cognitive Decline
연구 개요
상세 설명
A total of 71 postmenopausal women ages 50-65 on estrogen therapy will be randomized to continue or discontinue use of estrogen and will be followed for two years.
Participants will undergo PET and MRI scans and neuropsychological assessments initially and at the end of the two-year follow-up period. These procedures will allow us to evaluate brain metabolism and cognitive performance at baseline and two years following continuation or discontinuation of estrogen therapy.
We hypothesize that women who discontinue estrogen will show more evidence of decline than those who continue estrogen. This project will expand current knowledge of effects of estrogen by 1) determining whether estrogen use among postmenopausal women at risk for cognitive decline is protective of brain metabolism, 2) identifying early predictors for cognitive decline, and 3) developing guidelines for estrogen use in postmenopausal women.
연구 유형
등록 (예상)
연락처 및 위치
연구 장소
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California
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Stanford, California, 미국, 94070-5723
- Stanford University School of Medicine, Dept. of Psychiatry and Behavioral Sciences
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참여기준
자격 기준
공부할 수 있는 나이
건강한 자원 봉사자를 받아들입니다
연구 대상 성별
샘플링 방법
연구 인구
설명
Inclusion Criteria:
- Women between the ages of 45 and 65
- Currently on hormone replacement
- One year or more post complete cessation of menses
- Willing to sign the Human Subject Protection Consent form prior to enrollment in the study
- Willing to be randomized to continue or discontinue estrogen therapy
- Adequately visually and auditorially acute to allow neuropsychological testing
- Beyond 8 years of educational achievement to allow adequate neuropsychological testing
- Willing to undergo brain imaging
- At risk for cognitive decline, as defined by one or more of the following: Personal or family history of mood disorder, Hypothyroidism, Diabetes, Family history of Alzheimer's, APOE-4 allele
Exclusion Criteria:
- Diagnosis of possible or probable Alzheimer's disease or dementia
- Cerebrovascular disease or uncontrolled hypertension (systolic BP >170 or diastolic BP >100)
- History of myocardial infarction within previous year or unstable heart disease
- History of significant liver disease, pulmonary disease, or current cancer
- Contraindication for MRI (metal in body, claustrophobia, etc.)
공부 계획
연구는 어떻게 설계됩니까?
디자인 세부사항
코호트 및 개입
그룹/코호트 |
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1
Continue current hormone therapy
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2
Taper off hormone therapy
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연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
기간 |
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Changes in cognition and brain metabolism
기간: Baseline and 24 months
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Baseline and 24 months
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공동 작업자 및 조사자
수사관
- 수석 연구원: Terence Ketter, MD, Stanford University
- 수석 연구원: Natalie Rasgon, MD, PhD, Stanford University School of Medicine, Dept of Psychiatry and Behavioral Sciences
- 수석 연구원: Jennifer Hoblyn, MD, VA Palo Alto Health Care System
간행물 및 유용한 링크
일반 간행물
- Rasgon NL, Small GW, Siddarth P, Miller K, Ercoli LM, Bookheimer SY, Lavretsky H, Huang SC, Barrio JR, Phelps ME. Estrogen use and brain metabolic change in older adults. A preliminary report. Psychiatry Res. 2001 Jul 1;107(1):11-8. doi: 10.1016/s0925-4927(01)00084-1.
- Rasgon NL, Thomas MA, Guze BH, Fairbanks LA, Yue K, Curran JG, Rapkin AJ. Menstrual cycle-related brain metabolite changes using 1H magnetic resonance spectroscopy in premenopausal women: a pilot study. Psychiatry Res. 2001 Feb 28;106(1):47-57. doi: 10.1016/s0925-4927(00)00085-8.
- Dunkin J, Rasgon N, Wagner-Steh K, David S, Altshuler L, Rapkin A. Reproductive events modify the effects of estrogen replacement therapy on cognition in healthy postmenopausal women. Psychoneuroendocrinology. 2005 Apr;30(3):284-96. doi: 10.1016/j.psyneuen.2004.09.002.
- Rasgon NL, Geist CL, Kenna HA, Wroolie TE, Williams KE, Silverman DH. Prospective randomized trial to assess effects of continuing hormone therapy on cerebral function in postmenopausal women at risk for dementia. PLoS One. 2014 Mar 12;9(3):e89095. doi: 10.1371/journal.pone.0089095. eCollection 2014.
연구 기록 날짜
연구 주요 날짜
연구 시작
기본 완료 (실제)
연구 완료 (실제)
연구 등록 날짜
최초 제출
QC 기준을 충족하는 최초 제출
처음 게시됨 (추정)
연구 기록 업데이트
마지막 업데이트 게시됨 (추정)
QC 기준을 충족하는 마지막 업데이트 제출
마지막으로 확인됨
추가 정보
이 정보는 변경 없이 clinicaltrials.gov 웹사이트에서 직접 가져온 것입니다. 귀하의 연구 세부 정보를 변경, 제거 또는 업데이트하도록 요청하는 경우 register@clinicaltrials.gov. 문의하십시오. 변경 사항이 clinicaltrials.gov에 구현되는 즉시 저희 웹사이트에도 자동으로 업데이트됩니다. .