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Sponsored by: |
Rockefeller University |
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Information provided by: | Rockefeller University |
ClinicalTrials.gov Identifier: | NCT00932308 |
The investigators are involved in a research program to understand how different diets may affect the risk of colorectal polyps and cancer. To that end, the investigators are conducting a study of a western style diet versus a "prudent style" diet in which volunteer subjects are provided a different diet for 2 separate 4 week periods at the Rockefeller University Hospital. During one of these 4 week inpatient periods they receive a Western style diet and during the other 4 week inpatient period they receive a "Prudent style" diet.
The investigators will determine changes within the colon as a result of the two different diets. A more detailed description of the study is provided below.
Condition | Intervention |
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Colorectal Cancer |
Dietary Supplement: Western-style diet (WD) Dietary Supplement: Prudent Diet (PD) |
Study Type: | Interventional |
Study Design: | Prevention, Randomized, Single Blind (Investigator), Active Control, Crossover Assignment, Efficacy Study |
Official Title: | Colorectal Inflammatory Response to a Western-Style Diet |
Enrollment: | 5 |
Study Start Date: | September 2006 |
Primary Completion Date: | May 2008 (Final data collection date for primary outcome measure) |
Arms | Assigned Interventions |
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1: Active Comparator
Western-style, high-fat, low-calcium diet (WD)
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Dietary Supplement: Western-style diet (WD)
Will comprise of approximately 40% fat, 40% carbohydrates, 20% protein, and 350mg calcium, prepared by the Bionutrition Department using the USDA Nutrient Database.
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2: Active Comparator
Prudent, low-fat, calcium sufficient diet (PD)
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Dietary Supplement: Prudent Diet (PD)
Will contain approximately 20% fat, 60% carbohydrate, 20% protein, and 1100mg calcium; the diets will consist of a 2-day rotating metabolic menu.
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Study subjects participate for about 3 months. During this time, there is one outpatient visit, a 4 week inpatient period, a 4 week outpatient period known as a wash out period and finally another 4 week inpatient period. During the inpatient periods The Rockefeller University Hospital becomes your home the subject must sleep here every night and consume all the food provided. During the screening visit blood and urine samples will be taken and an EKC (electrocardiogram) and a complete physical exam will be done. After enrollment into the study, the first 4 week inpatient period begins. You may continue to go to work or do other activities as long as you eat the diet provided and sleep at the Rockefeller University Hospital. You must eat everything that we give you and you may not substitute or supplement the diet in any way. During each 4 week stay at The Rockefeller University Hospital, there will be three flexible sigmoidoscopies done and biopsies taken of the mucosal lining of the colorectum. This procedure is painless and takes about 5 minutes. In addition, blood and stool samples will be taken every few days for follow-up and research, two 24 hour urine samples will be done on separate days during the hospitalization. Vital signs are measured every day and your weight will be measured three times per week. During the four week wash out period, the subject will return to their home, go about their normal activities and consume their normal diet. The subject will return to The Rockefeller University Hospital for the second 4 week inpatient period. The procedures and laboratory tests are the same during the second inpatient period. The study concludes with the subjects discharge from the RUH.
Ages Eligible for Study: | 50 Years to 72 Years |
Genders Eligible for Study: | Both |
Accepts Healthy Volunteers: | Yes |
Inclusion Criteria:
Exclusion Criteria:
Withdrawal Criteria:
If positive, the subject will be withdrawn from the study
United States, New York | |
Rockefeller University | |
New York, New York, United States, 10065 |
Principal Investigator: | Peter Holt, MD | Rockefeller University |
Responsible Party: | The Rockefeller University ( Peter Holt, MD ) |
Study ID Numbers: | PHO-0588 |
Study First Received: | December 11, 2008 |
Last Updated: | July 1, 2009 |
ClinicalTrials.gov Identifier: | NCT00932308 History of Changes |
Health Authority: | United States: Institutional Review Board |
Calcium, Dietary Digestive System Diseases Digestive System Neoplasms Gastrointestinal Diseases Colonic Diseases |
Gastrointestinal Neoplasms Intestinal Diseases Rectal Diseases Intestinal Neoplasms Colorectal Neoplasms |
Neoplasms Digestive System Diseases Neoplasms by Site Digestive System Neoplasms Gastrointestinal Diseases Colonic Diseases |
Gastrointestinal Neoplasms Intestinal Diseases Rectal Diseases Intestinal Neoplasms Colorectal Neoplasms |