トコトリエノールと閉経後の女性の骨の健康
骨の健康に対するトコトリエノールの効果：パイロット研究
Osteoporosis (severe bone loss) is a bone disease with bone fragility and an increased chance for bone fractures. Recent studies have indicated tocotrienols (one kind of vitamin E) supplement may be good for the bone health in postmenopausal women. However, no study has ever been done the role of tocotrienols in bone health in postmenopausal women. Our long-term goal is to develop a new strategy featuring a dietary supplement (i.e., tocotrienols) for slowing down bone loss in postmenopausal women. We examined the effects of 12-week tocotrienols supplemenation on bone measurements in postmenopausal women. We plan to enroll approximately 200 women to recruit 78 qualified women into 3 groups: no tocotrienols, low tocotrienols, or high tocotrienols group. The outcome measures will be assessed at baseline, after 6 weeks, and after 12 weeks. Bone-related measurements will be recorded using blood and urine samples. Investigators will monitor the safety of subjects after 6 and after 12 weeks. Food intake, physical activity, and quality of life will be assessed at baseline and 12 weeks. All data will be analyzed statistically.
調査の概要
詳細な説明
Osteoporosis (severe bone loss) is a bone disease with bone fragility and an increased chance for bone fractures. Women are 4 times more likely to have osteoporosis than men because there is no estrogen protection after menopause and women in general have lighter and thinner bones. Recent studies have indicated tocotrienols (one kind of vitamin E) supplement may be good for the bone health in postmenopausal women. However, no study has ever been done the role of tocotrienols in bone health in postmenopausal women. Our long-term goal is to develop a new strategy featuring a dietary supplement (i.e., tocotrienols) for slowing down bone loss in postmenopausal women. The purpose of the study is to examine the effect of 12-week tocotrienols on bone measurements in postmenopausal women. Investigators plan to recruit postmenopausal women using flyers, non-solicited e-mail system, campus announcement, local radio, newspapers, and TV scripts. We plan to enroll approximately 200 women, aiming to recruit 78 qualified women at the study's outset. After screening, qualified participants will be matched by body weight and age, and then randomly assigned to the no tocotrienols, low tocotrienols, or high tocotrienols group. The outcome measures will be assessed at baseline, after 6 weeks, and after 12 weeks. Bone-related measurements will be recorded using blood and urine samples. Investigators will monitor the safety of subjects after 6 and after 12 weeks. Food intake, physical activity, and quality of life will be assessed at baseline and 12 weeks. All data will be analyzed statistically.
研究の種類
入学 (実際)
段階
- フェーズ2
- フェーズ 1
連絡先と場所
研究場所
-
-
Texas
-
Lubbock、Texas、アメリカ、79430
- Texas Tech University Health Sciences Center
-
-
参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
Inclusion criteria
- Postmenopausal women with no menses for 1-10 years.
- Bone mass with bone mineral density (BMD) T-score between 0.5 and -2.5 at the spine and/or hip.
- Normal laboratory evaluation, thyroid function: TSH > 0.3 and < 5.0 mU/L; hepatic function: bilirubin ≤ 2.0 mg/dl; SGOT (also called AST)/SGPT (also called ALT) < 3x upper limit of normal; renal function: serum creatinine ≤ 2.0 mg/dl; BUN less than 1.5 times upper limit of normal; serum calcium, phosphorus, and alkaline phosphatase: within normal ranges. HbA1c < 7.0%.
- Serum 25-OH vitamin D >= 20 ng/mL.
- Age 40 and older
Exclusion criteria
- History of, or evidence for, metabolic bone disease including recent fractures (other than low BMD).
- Having received medication (calcitonin, raloxifene, or systemic glucocorticoids) within 3 months before the start of the study.
- Having bisphosphonate within 12 months before the start of the study.
- Having hormone/hormone-like replacement therapy within 3 months before the initiation of the study.
- History of cancer except for treated superficial basal or squamous cell carcinoma of the skin.
- History or evidence of endocrine disease or malabsorption syndrome that would be a contraindication to the investigation of tocotrienols' absorption.
- Uncontrolled diabetes mellitus defined by an HbA1c of ≥ 7% in the last 3 months.
- History of statin or other drug for cholesterol-control within 3 months before the start of the study.
- Alcohol intake greater than "moderate" (one drink per day) or use of nonsteroidal anti-inflammatory drugs on a regular basis.
- Cognitive impairment, depression or other medical/eating disorders, likely to move during the trial, lack of transportation, distance from the study site, or unavailable at sample collection times.
- Smoking > 10 cigarettes/day.
- Unwilling to accept randomization.
研究計画
研究はどのように設計されていますか？
デザインの詳細
- 主な目的：防止
- 割り当て：ランダム化
- 介入モデル：並列代入
- マスキング：ダブル
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
|
介入なし：Placebo group
No active dose of tocotrienols |
|
|
アクティブコンパレータ：Low tocotrienols group
Low dose of tocotrienols |
300 mg tocotrienols daily |
|
アクティブコンパレータ：High tocotrienols group
High dose of tocotrienol |
600 mg tocotrienols daily |
この研究は何を測定していますか？
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Serum Bone Resorption Marker
時間枠：baseline and 12 weeks
|
The percentage change in urine N-terminal telopeptide from baseline to 12 weeks. |
baseline and 12 weeks
|
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Serum Bone Formation Marker
時間枠：Baseline and 12 weeks
|
The percentage changes in serum bone specific alkaline phosphatase (BALP) from baseline to after 12 weeks. |
Baseline and 12 weeks
|
その他の成果指標
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Oxidative Stress Marker
時間枠：Baseline and 12 weeks
|
8-hydroxy-2'-deoxyguanosine (8-OHdG) and urinary F2-isoprostanes (also called 8-iso-PGF2α) |
Baseline and 12 weeks
|
|
Liver Function Test
時間枠：Baseline and after 12 weeks
|
serum aspartate aminotransferase (ALT) and alanine aminotransferase (AST) |
Baseline and after 12 weeks
|
|
Quality of Life Survey
時間枠：Baseline and 12 weeks
|
SF-36 survey (v2) to assess the quality of life. |
Baseline and 12 weeks
|
|
Serum Tocotrienols Concentrations
時間枠：Baseline and after 12 weeks
|
Serum tocotrienols concentrations in plasma. |
Baseline and after 12 weeks
|
協力者と研究者
捜査官
- 主任研究者：Chwan-Li (Leslie) Shen, PhD、Texas Tech University Health Sciences Center School of Medicine
出版物と役立つリンク
一般刊行物
- Shen CL, Mo H, Dunn DM, Watkins BA. Tocotrienol Supplementation Led to Higher Serum Levels of Lysophospholipids but Lower Acylcarnitines in Postmenopausal Women: A Randomized Double-Blinded Placebo-Controlled Clinical Trial. Front Nutr. 2021 Dec 24;8:766711. doi: 10.3389/fnut.2021.766711. eCollection 2021.
- Shen CL, Yang S, Tomison MD, Romero AW, Felton CK, Mo H. Tocotrienol supplementation suppressed bone resorption and oxidative stress in postmenopausal osteopenic women: a 12-week randomized double-blinded placebo-controlled trial. Osteoporos Int. 2018 Apr;29(4):881-891. doi: 10.1007/s00198-017-4356-x. Epub 2018 Jan 12.
- Shen CL, Wang S, Yang S, Tomison MD, Abbasi M, Hao L, Scott S, Khan MS, Romero AW, Felton CK, Mo H. A 12-week evaluation of annatto tocotrienol supplementation for postmenopausal women: safety, quality of life, body composition, physical activity, and nutrient intake. BMC Complement Altern Med. 2018 Jun 28;18(1):198. doi: 10.1186/s12906-018-2263-0.
- Shen CL, Mo H, Yang S, Wang S, Felton CK, Tomison MD, Soelaiman IN. Safety and efficacy of tocotrienol supplementation for bone health in postmenopausal women: protocol for a dose-response double-blinded placebo-controlled randomised trial. BMJ Open. 2016 Dec 23;6(12):e012572. doi: 10.1136/bmjopen-2016-012572.
研究記録日
主要日程の研究
研究開始 (実際)
一次修了 (実際)
研究の完了 (実際)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (推定)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。