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| Name | Class |
|---|---|
| University of Reading | OTHER |
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The traditional risk factors for obesity are inappropriate diet, lack of exercise and genetic factors. However, recent observations have involved gut microbiota profiles as having an additional influence. In this case, there exists the possibility to modulate this through diet. Research has shown that the gut microbiota of both obese humans and mouse models of obesity is altered towards less beneficial one compared to lean counterparts. This raises the possibility of modulating the gut microbiota as a novel strategy in tackling the epidemic of obesity and diabetes sweeping the developed world. In addition, a more direct effect of high-fat induced disruption of the intestinal microbiota has also been seen with a murine model. Elevated circulating levels of lipopolysaccharide (LPS) a major building block and antigen of Gram-negative bacteria, was shown to generate a low grade chronic inflammation, termed metabolic endotoxemia, which then onsets insulin resistance. High-fat diets were shown to disrupt the Gram-negative intestinal populations of these animals, liberating LPS. The effects of prebiotics on the microbiota or metabolic syndrome (combination of disorders that increase the risk of developing cardiovascular disease and diabetes) in overweight adults have not been investigated thus far. The investigators therefore propose to investigate the effect of galactooligosaccharide (GOS) on the faecal microbiota and metabolic syndrome risk factors in overweight adults in a double-blind, randomised, placebo controlled, cross-over trial.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| MDn | Placebo Comparator |
| |
| B-GOS | Active Comparator |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Bimuno | Dietary Supplement | 5.5g daily intake |
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| Measure | Description | Time Frame |
|---|---|---|
| Faecal microbiota changes enumerated by Fluorescent In Situ Hybridisation and qualitatively assessed by Denaturing Gradient Gel Electrophoresis. | 3 months | |
| Lipid profile (total, LDL and HDL cholesterol, triglycerides and non-esterified fatty acids) | 3 months | |
| Inflammatory/thrombotic biomarkers (including C-reactive protein, TNF-a, IL6, IL-8, IL-10, sCD40L, sP-selectin, t-PA) | 3 months |
| Measure | Description | Time Frame |
|---|---|---|
| Insulin resistance derived from fasted measures of glucose and insulin ratio | 3 months |
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| Name | Affiliation | Role |
|---|---|---|
| Jelena Vulevic, PhD | The University of Reading | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| School of Chemistry, Food Biosciences and Pharmacy, The University of Reading | Reading | Berkshire | RG6 6AU | United Kingdom |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 23303873 | Derived | Vulevic J, Juric A, Tzortzis G, Gibson GR. A mixture of trans-galactooligosaccharides reduces markers of metabolic syndrome and modulates the fecal microbiota and immune function of overweight adults. J Nutr. 2013 Mar;143(3):324-31. doi: 10.3945/jn.112.166132. Epub 2013 Jan 9. |
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| ID | Term |
|---|---|
| D024821 | Metabolic Syndrome |
| ID | Term |
|---|---|
| D007333 | Insulin Resistance |
| D006946 | Hyperinsulinism |
| D044882 | Glucose Metabolism Disorders |
| D008659 | Metabolic Diseases |
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| ID | Term |
|---|---|
| C072242 | 4'-galactooligosaccharide |
| C008315 | maltodextrin |
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| Maltodextrin | Dietary Supplement | 5.5g daily intake |
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| D009750 |
| Nutritional and Metabolic Diseases |