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Spots Global Cancer Trial Database for Chemoprevention of Colorectal Cancer: the Role of Non-digestible Carbohydrates

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Trial Identification

Brief Title: Chemoprevention of Colorectal Cancer: the Role of Non-digestible Carbohydrates

Official Title: Chemoprevention of Colorectal Cancer: the Role of Non-digestible Carbohydrates

Study ID: NCT01214681

Study Description

Brief Summary: Colorectal cancer is a common disease worldwide. It is now thought that colorectal cancer cells arise from stem cells where the genetic material regulating growth and division of the stem cell has become defective. This leads to unregulated production of cells which in turn have defective genetic information and cancer formation. Research into colorectal cancer is hampered by the fact that studies must take a very long time to produce results and be very large if the development of a cancer is the endpoint. Therefore alternative methods of quantifying the risk of developing a cancer are required so trials can be a realistic size and be completed in a realistic time frame. The investigators have previously identified several candidates for these 'biomarkers'. The next stage in proving or disproving these as useful biomarkers is to test their response to a dietary agent that the investigators know reduces the risk of colon cancer.

Detailed Description: This project is designed to enhance understanding of links between food and the health of the gut. The particular purpose of the project is to investigate the impact of a well-defined intervention in human volunteers on a panel of novel, and established, diet-related biomarkers of bowel cancer risk. We have developed a number of novel biomarkers of diet-related CRC risk measured in colo-rectal mucosal biopsies (and in stool). These biomarkers include differentially expressed proteins, DNA methylation markers and inflammation markers. In our on-going BORICC Study we are investigating the relationships between dietary exposure and nutritional status for these biomarkers in a cross-sectional study. The next logical step in this research is to determine whether a selected panel of the most promising biomarkers responds to a dietary intervention i.e. to test their utility as biomarkers of GI health and potential as surrogate endpoints in future human studies. We propose to use Hi-maize 260 and polydextrose (PD) as our model resistant starch (RS) intervention agents. RS describes the fraction of dietary starch which is not digested in the small bowel and which flows to the colon where it is a substrate for bacterial fermentation. (Asp, 1996) PD is produced by the bulk melt polycondensation of glucose and sorbitol to produce an oligosaccharide with a mean degree of polymerisation of 12 which is resistant to mammalian GI enzymes and, like other RSs, is a substrate for bacterial fermentation. (Auerbach, 2007) Both Hi-maize and PD are fermented (to a greater or lesser extent) producing short-chain fatty acids (SCFA) including butyrate. (Asp, 1996) Butyrate has beneficial effects on gut physiology and immune function including anti-inflammatory effects. (Wächtershäuser, 2000; Dronamraju, 2009) In the present project we will investigate the impact of PD and RS, as food-borne substrates for delivery of butyrate, on biomarkers of bowel cancer risk.

Eligibility

Minimum Age: 16 Years

Eligible Ages: CHILD, ADULT, OLDER_ADULT

Sex: ALL

Healthy Volunteers: Yes

Locations

Wansbeck General Hospital, Ashington, Northumberland, United Kingdom

North Tyneside General Hospital, North Shields, Tyne & Wear, United Kingdom

Contact Details

Name: John Mathers, PhD

Affiliation: Newcastle University

Role: STUDY_DIRECTOR

Name: Naomi Willis, PhD

Affiliation: Newcastle University

Role: PRINCIPAL_INVESTIGATOR

Useful links and downloads for this trial

Clinicaltrials.gov

Google Search Results

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