- ICH GCP
- 미국 임상 시험 레지스트리
- 임상시험 NCT01138787
Cholesterol Absorption Inhibition Study (CASTELL)
CASTELL = Cholesterol Absorption Study STErols (LL)
Rationale: Consuming Plant Sterols (PS) fortified foods is widely accepted as easy to apply, life-style change to combat modestly elevated plasma cholesterol concentrations. PS are typically formulated as PS fatty acid ester (PSE) from margarines. In this study, PS will be formulated in a new innovative type spread. To confirm that the new spread results in a comparable cholesterol absorption inhibition as the reference product a dual isotope cholesterol study is planned, prior to any larger efficacy study.
Primary objective: Cholesterol absorption inhibition (%) calculated from plasma concentration vs. time curves from labeled cholesterol, for the PS or PSE containing products, compared to a control product without PS or PSE.
Secondary objectives: PK parameters for cholesterol as derived from the plasma concentration vs. time curves.
Study design: Acute, single dose, double-blind, randomized, cross-over. Study population: 18 healthy, non-obese men (BMI 20-27 kg∙m-2, age range 20 - 65 yr) Test products: PS (2250 mg) formulated in innovatively processed spread (30 g); PSE (2250 mg PS) reference product (30 g); Control product without PS or PSE (30 g) Intervention: Three study periods during which a single dose of either Test, Reference or Control (regular light spread) spreads will be consumed together with standard breakfast. At each study period, 50 mg of D7-cholesterol is added to the meal and 30 mg of 13C-cholesterol is injected to measure cholesterol absorption. Before and four times after consumption of each spread, blood samples will be taken at 24 h intervals up to 7 days.
Key parameters: Enrichments of labeled cholesterol isotopes as determined by GCMS and IRMS. Fractional absorption is determined by the ratio of the two isotopes in plasma cholesterol after 7 days.
연구 개요
상태
연구 유형
등록 (예상)
단계
- 해당 없음
연락처 및 위치
연구 장소
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Noord-Holland
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Amsterdam, Noord-Holland, 네덜란드
- Academisch Medisch Centrum, vasculaire geneeskunde
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참여기준
자격 기준
공부할 수 있는 나이
건강한 자원 봉사자를 받아들입니다
연구 대상 성별
설명
Inclusion Criteria:
- Apparently healthy: no medical conditions which might effect study measurements (judged by study physician).
- Males aged 20 - 65
- BMI 20-27 kg∙m-2
- LDL-C levels between 3.0 - 5.0 mmol/L, triglycerides < 3.0 mmol/L
- Not more than 10 hours per week of strenuous exercise
- Ability to give informed consent.
- Ability to follow verbal and written instructions.
- Non-smoker (tobacco, marijuana).
- The ability to attend and to commute to the performance site for each of study day visit and follow-up throughout the study period are required.
- Willing to consume a breakfast in the morning of each study day.
- Willing to consume margarine on each study occasion.
- Having a general practitioner.
- No use of medication which interferes with study measurements (as judged by the study physician).
- Agreeing to be informed about medically relevant personal test-results after the screening visit by a physician.
- Consumption =< 21 alcoholic drinks in a typical week.
- No blood donation 1 month prior to pre-study examination or during the study.
- Has accessible veins on the forearm as determined by examination at screening.
- Not being an employee of Unilever.
- No reported participation in another nutritional or biomedical trial 3 months before the pre-study examination or during the study.
No reported participation in night shift work during the study.
Exclusion Criteria:
- Unwilling to refrain from consumption of plant sterol or stanol containing products one week before and during the study..
- Plasma lipid profile which indicates deviating lipid / cholesterol homeostasis, to be judged by study physician.
- Evidence of severe cardiovascular, respiratory, urogenital, gastrointestinal/ hepatic, hemato¬logical/ immunologic, HEENT (head, ears, eyes, nose, throat), dermatological/ connective tissue, musculoskeletal, metabolic/nutritional, endocrine, neurological/ psychiatric diseases, allergy, major surgery and/or laboratory assessments which might limit participation in or completion of the study protocol.
- Gastrointestinal or hepatic disorders influencing gastrointestinal absorption or transit, including gallstones or biliary diseases.
- History of surgery related to the gastro-intestinal tract
- On a medically prescribed or weight reduction diet
- Recreational (intravenous) drug use.
- The use of psychotropic drugs, including: benzodiazepines or alcohol in excess of 21 units/ week for males
- Concomitant medication that may modulate gastro-intestinal secretions and pH (e.g. antacids, proton-pump-inhibitors, prostaglandins, anticholinergic agents, H2-receptor antagonists)
- Concomitant medication that can alter gastric emptying (e.g. metoclopramide, cisapride, domperidone and erythromycin, anticholinergics, tricyclic antidepressants, narcotic analgesics, adrenergic agents, calcium channel blockers)
- Concomitant medication that can alter intestinal transit (e.g. loperamide, chemical/ osmotic/bulk laxatives), or influence satiety/energy intake (e.g. sibutramine, gluco¬corticoids, anabolic steroids)
- Intolerance or allergy for test product.
공부 계획
연구는 어떻게 설계됩니까?
디자인 세부사항
- 주 목적: 방지
- 할당: 무작위
- 중재 모델: 크로스오버 할당
- 마스킹: 삼루타
무기와 개입
참가자 그룹 / 팔 |
개입 / 치료 |
---|---|
활성 비교기: Reference spread
2250 mg PS (as PSE) in spread (30 g)
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Single dose (30 gr) of spread, containing 2250 mg PS
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위약 비교기: Placebo spread
regular light margarine (30 g)
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Single dose (30 gr) of regular light margarine
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실험적: Test spread
2250 mg PS in innovatively processed spread (30 g)
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Single dose (30 gr) of innovatively processed spread containing 2250 mg PS.
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연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
기간 |
---|---|
cholesterol absorption calculated from plasma cholesterol enrichments vs. time curves
기간: 5 blood samples within one week for each intervention
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5 blood samples within one week for each intervention
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2차 결과 측정
결과 측정 |
기간 |
---|---|
PK parameters derived from plasma curves (Cmax, Tmax, cholesterol pool, flux).
기간: 5 blood samples within one week for each intervention
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5 blood samples within one week for each intervention
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공동 작업자 및 조사자
스폰서
수사관
- 수석 연구원: Maud N Vissers, Dr. Ir, Academisch Medisch Centrum, afdeling vasculaire geneeskunde
- 연구 책임자: Guus SM Duchateau, Dr, Unilever Research & Development Vlaardingen
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 (실제)
QC 기준을 충족하는 마지막 업데이트 제출
마지막으로 확인됨
추가 정보
이 연구와 관련된 용어
기타 연구 ID 번호
- 09030V
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