The aim of the project is to study the connection between bacterial fermentation in the colon of prebiotic substrates and effects on systemic metabolism and appetite i healthy humans
The purpose with this project is to study the association between bacterial fermentation in the colon of specific mixtures of cereal dietary fiber and effects on systemic metabolism and appetite regulation. For this purpose, short term studies are performed in healthy adult subjects. Different cereals, cereal blends and from cereal extracted dietary fiber will be studied, as well as effects of different processing of the cereals. Cardiometabolic test markers and colonic fermentation metabolites will be followed up to 14 h after intake of the test substrates, and gut microbiota composition will be determined prior to and after the interventions.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
SINGLE
Enrollment
18
Cereal products based on rye, barley, wheat, oat, and corn
Cereal products based on rye, barley, wheat, oat, and corn
Cereal products based on rye, barley, wheat, oat, and corn
Food Technology, engineering and Nutrition, LTH, Lund University
Lund, Sweden
Blood glucose regulation
Postprandial blood glucose regulation (incremental area under the curve) acute after intake of the test products and at forthcoming meals within 14 h after consumption of test products.
Time frame: 0-14 h after intake
serum insulin
Postprandial serum insulin concentrations (incremental area under the curve) acute after intake of the test products and at forthcoming meals within 14 h after consumption of test products.
Time frame: 0-14 h after intake
gut microbiota composition
effects on gut microbiota composition after intake of prebiotics
Time frame: first stool delivered from14 h after intake
plasma GLP-1 (glucagon-like peptide-1 ), PYY (peptide tyrosine tyrosine), Ghrelin
Gastro-intestinale hormones involved in appetite and metabolic regulation
Time frame: 0-14 h after intake
plasma: CRP (C reactive protein ), IL (interleukin)-6, IL-18, IL-8, IL-1, IL-10, LBP (lipopolysaccharide-binding protein), (PAI-1plasminogen activator inhibitor)
Inflammatory markers in blood
Time frame: 0-14 h after intake
plasma GLP-2
gut hormone involved in gut mucosa integrity
Time frame: 0-14 h after intake
plasma SCFA (short-chain fatty acid)
colonic fermentation metabolites
Time frame: 0-14 h after intake
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Cereal products based on rye, barley, wheat, oat, and corn
Cereal products based on rye, barley, wheat, oat, and corn
A cereal based product with low concentrations of df
blood lipids
cholesterol and free fatty acids in plasma
Time frame: 0-14 h after intake
plasma adiponectin
hormone involved in metabolic regulation
Time frame: 0-14 h after intake
plasma BDNF (Brain-derived neurotrophic factor)
signal protein important for brain functions, but also involved in metabolic regulation
Time frame: 0-14 h after intake
plasma neurotensin
a neuro peptide peptides involved in appetite and metabolic regulation
Time frame: 0-14 h after intake
plasma Nesfatin-1
a neuro peptide that participates in the regulation of hunger and fat storage.
Time frame: 0-14 h after intake