| Resistant starch improves insulin sensitivity in metabolic syndrome. | |
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MedLine Citation:
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PMID: 20536509 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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AIMS: Diets rich in non-viscous fibre are linked to a reduced risk of both diabetes and cardiovascular disease; however, the mechanism of action remains unclear. This study was undertaken to assess whether chronic consumption of this type of fibre in individuals with the metabolic syndrome would improve insulin sensitivity via changes in ectopic fat storage. METHODS: The study was a single-blind, randomized, parallel nutritional intervention where 20 insulin resistant subjects consumed either the fibre supplement (resistant starch) (40 g/day) or placebo supplement (0 g/day) for 12 weeks. Insulin sensitivity was measured by euglycaemic-hyperinsulinaemic clamp and ectopic fat storage measured by whole-body magnetic resonance spectroscopy. RESULTS: Resistant starch consumption did not significantly affect body weight, fat storage in muscle, liver or visceral depots. There was also no change with resistant starch feeding on vascular function or markers of inflammation. However, in subjects randomized to consume the resistant starch, insulin sensitivity improved compared with the placebo group (P = 0.023). Insulin sensitivity correlated significantly with changes in waist circumference and fat storage in tibialis muscle and to a lesser extent to visceral-to-subcutaneous abdominal adipose tissue ratio. CONCLUSION: Consumption of resistant starch improves insulin sensitivity in subjects with the metabolic syndrome. Unlike in animal models, diabetes prevention does not appear to be directly related to changes in body adiposity, blood lipids or inflammatory markers. Further research to elucidate the mechanisms behind this change in insulin sensitivity in human subjects is required. |
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Authors:
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K L Johnston; E L Thomas; J D Bell; G S Frost; M D Robertson |
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Publication Detail:
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Type: Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Diabetic medicine : a journal of the British Diabetic Association Volume: 27 ISSN: 1464-5491 ISO Abbreviation: Diabet. Med. Publication Date: 2010 Apr |
Date Detail:
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Created Date: 2010-06-11 Completed Date: 2010-10-18 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8500858 Medline TA: Diabet Med Country: England |
Other Details:
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Languages: eng Pagination: 391-7 Citation Subset: IM |
Affiliation:
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Diabetes and Endocrinology, Postgraduate Medical School, University of Surrey, Guildford, UK. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Body Fat Distribution Body Weight / physiology Dietary Fiber / administration & dosage* Female Glucose Clamp Technique Humans Insulin Resistance / physiology* Lipid Metabolism / physiology* Magnetic Resonance Imaging / methods Male Metabolic Syndrome X / diet therapy*, metabolism, physiopathology* Middle Aged Obesity / complications, metabolism Waist Circumference |
| Grant Support | |
ID/Acronym/Agency:
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//Medical Research Council |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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