Effects of a Dietary Supplement on Lipoprotein Lipids and Inflammatory Markers
An Open-label, Pilot Trial to Assess the Effects of a Dietary Supplement on Fasting Lipoprotein Lipids and a Marker of Inflammation in Men and Women With Above-desirable Levels of Low-density Lipoprotein Cholesterol
調査の概要
詳細な説明
Carrageenan is a naturally occurring plant polysaccharide extracted from edible seaweeds that is widely used in food and beverage products, with a history of use dating back hundreds of years. It is an FDA-approved food additive in the U.S. and has regulatory approval for use as a food ingredient in Europe, Asia, and Latin America.
An earlier clinical trial conducted by the Russian Academy of Sciences demonstrated that consumption of 250 mg/day of carrageenan in capsules, for 28 days, lowered low-density lipoprotein cholesterol (LDL-C) by 34%. In that study, carrageenan consumption also resulted in statistically significant decreases in important biomarkers of chronic inflammation: leukocytes by 16%, fibrinogen by 9%, and C-reactive protein (CRP) by 13%. Another clinical trial conducted by the University of the Philippines showed that carrageenan added to foods led to statistically significant decreases in total cholesterol (total-C) and triglycerides (TG), elevated levels of which are also linked to cardiovascular disease. That study showed that carrageenan consumption led to a 33% reduction in total-C and a 32% reduction in TG.
This is a pilot, open-label, 4 week trial with two screening visits, one baseline visit and two test visits. Subjects will consume 300 mg/day of a proprietary dietary capsule containing carrageenan, with a meal at a consistent time each day, starting at the baseline visit. Fasting blood samples will be collected for lipid profile (total-C, LDL-C, high-density lipoprotein cholesterol [HDL-C], and TG), and high-sensitivity CRP (hs-CRP) measurements at the second screening visit, baseline and the two test visits. Additionally, blood will be drawn for a comprehensive metabolic panel and complete blood count at the second screening and the last test visit only. Assessments of vital signs, body weight, evaluation of inclusion and exclusion criteria, concomitant medication/supplement use, and adverse events will be performed throughout the study. Written study instructions will be provided to the subjects including instructions about fasting, maintenance of adequate hydration, and refraining from vigorous physical activity, alcohol consumption, and tobacco products prior to and during the subsequent visit. At the end of the 4 week test period, subjects will return study product and compliance will be assessed.
研究の種類
入学 (実際)
段階
- 適用できない
連絡先と場所
研究場所
-
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Florida
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Boca Raton、Florida、アメリカ、33487
- MB Clinical Research
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-
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:
- Body mass index 18.5-34.9 kg/m2
- Judged to be in good health on basis of medical history and screening laboratory tests
- Fasting LDL-C ≥115 mg/dL and <190 mg/dL
Exclusion Criteria:
- Abnormal laboratory test results of clinical significance (e.g., TG ≥400 mg/dL, blood glucose ≥126 mg/dL, fasting creatinine ≥1.5 mg/dL, alanine aminotransferase or aspartate aminotransferase ≥1.5X the upper limit of normal)
- Atherosclerotic cardiovascular disease or other evidence of atherosclerotic cardiovascular disease (myocardial infarction or other acute coronary syndrome, coronary or other revascularization procedure, transient ischemic attack, ischemic stroke, atherosclerotic peripheral arterial disease or other documented atherosclerotic diseases)
- Recent major trauma or surgical event
- History or presence of clinically important pulmonary, endocrine, hepatic, renal, hematologic, immunologic, dermatologic, neurologic, psychiatric, or biliary disorders
- History or current gastrointestinal disorder with the potential to disrupt normal digestion and absorption
- Known allergy, sensitivity, or intolerance to any ingredients in the study product
- Uncontrolled hypertension
- Recent history of cancer (except non-melanoma skin cancer)
- Recent weight change ≥4.5 kg
- History of diagnosed eating disorder
- Extreme dietary habits
- Current or recent history of, or strong potential for, drug or alcohol abuse
- Recent use of medications intended to alter the lipid profile, (e.g., statins, bile acid sequestrants, cholesterol absorption inhibitor, fibrates, niacin [drug form] or omega-3 fatty acid drugs), weight-loss drugs or programs, systemic corticosteroids, anticoagulants, or unstable use of any antihypertensive medication
- Recent use of foods or dietary supplements with potential to influence lipid metabolism (e.g., omega-3 fatty acid supplements or fortified foods, sterol/stanol products, red rice yeast supplements, garlic supplements, soy isoflavone supplements, niacin or its analogues at doses >400 mg/d) and viscous dietary fiber supplements (e.g., psyllium, beta-glucan, methylceullylose and/or carrageenan)
- Recent use of antibiotics
- Pregnant, planning to be pregnant during the study period or lactating females or women of childbearing potential unwilling to commit to use of a medically approved form of contraception
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：支持療法
- 割り当て：なし
- 介入モデル：単一グループの割り当て
- マスキング：なし（オープンラベル）
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
|
実験的：Dietary supplement with carrageenan
300 mg/day of dietary supplement containing carrageenan
|
300 mg/day of dietary supplement containing carrageenan.
|
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 |
|---|---|---|
|
LDL-C
時間枠：Up to 28 days
|
Percent change in LDL-C from baseline (average of values at days -7 and 0) to end of treatment (average of values at days 21 and 28)
|
Up to 28 days
|
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Total-C
時間枠：Up to 28 days
|
Percent change in total-C from baseline (average of values at days -7 and 0) to end of treatment (average of values at days 21 and 28)
|
Up to 28 days
|
|
HDL-C
時間枠：Upto 28 days
|
Percent change in HDL-C from baseline (average of values at days -7 and 0) to end of treatment (average of values at days 21 and 28)
|
Upto 28 days
|
|
Total-C/HDL-C
時間枠：Up to 28 days
|
Percent change in the ratio of total-C/HDL-C from baseline (average of values at days -7 and 0) to end of treatment (average of values at days 21 and 28)
|
Up to 28 days
|
|
Non-high-density lipoprotein cholesterol (non-HDL-C)
時間枠：Upto 28 days
|
Percent change in non-HDL-C (calculated as total-C minus HDL-C) from baseline (average of values at days -7 and 0) to end of treatment (average of values at days 21 and 28)
|
Upto 28 days
|
|
Triglycerides (TG)
時間枠：Up to 28 days
|
Percent change in TG from baseline (average of values at days -7 and 0) to end of treatment (average of values at days 21 and 28)
|
Up to 28 days
|
|
hs-CRP
時間枠：Up to 28 days
|
Change in hs-CRP from baseline (average of values at days -7 and 0) to end of treatment (average of values at days 21 and 28)
|
Up to 28 days
|
協力者と研究者
捜査官
- スタディディレクター：Kevin C Maki, PhD、MB Clinical Research and Consulting LLC
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 (実際)
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
本研究に関する用語
その他の研究ID番号
- MB-1608
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