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Plasma enteroglucagon, gastrin and peptide YY in conventional and germ-free rats refed with a fibre-free or fibre-supplemented diet. 1989

R A Goodlad, and B Ratcliffe, and J P Fordham, and M A Ghatei, and J Domin, and S R Bloom, and N A Wright
Department of Histopathology, Royal Postgraduate Medical School, London.

Germ-free rats and conventional rats were starved and then refed with either an elemental diet (Flexical), or Flexical plus 30% kaolin, or Flexical plus 30% of a fibre mixture. Plasma levels of enteroglucagon, gastrin and peptide YY (PYY) were all significantly affected by diet. Enteroglucagon and especially PYY were significantly increased by the addition of fermentable fibre to the diet, but only in the conventional, not in the germ-free rats. Gastrin was not affected by the addition of fermentable fibre, but was increased by kaolin. Enteroglucagon and PYY were, however, both very much elevated in the germ-free animals, in which there is no proliferative response to fibre. Enteroglucagon and PYY levels were similar to those usually associated with extreme hyperproliferative states, indicating that it is unlikely that these hormones are involved in the proliferative response of the gastrointestinal tract to dietary fibre, and casting doubt on their role in other responses.

UI MeSH Term Description Entries
D010455 Peptides Members of the class of compounds composed of AMINO ACIDS joined together by peptide bonds between adjacent amino acids into linear, branched or cyclical structures. OLIGOPEPTIDES are composed of approximately 2-12 amino acids. Polypeptides are composed of approximately 13 or more amino acids. PROTEINS are considered to be larger versions of peptides that can form into complex structures such as ENZYMES and RECEPTORS. Peptide,Polypeptide,Polypeptides
D011863 Radioimmunoassay Classic quantitative assay for detection of antigen-antibody reactions using a radioactively labeled substance (radioligand) either directly or indirectly to measure the binding of the unlabeled substance to a specific antibody or other receptor system. Non-immunogenic substances (e.g., haptens) can be measured if coupled to larger carrier proteins (e.g., bovine gamma-globulin or human serum albumin) capable of inducing antibody formation. Radioimmunoassays
D004035 Diet Therapy Adjusting the quantity and quality of food intake to improve health status of an individual. This term does not include the methods of food intake (NUTRITIONAL SUPPORT). Diet Therapy, Restrictive,Dietary Modification,Dietary Restriction,Restriction Diet Therapies,Restriction Diet Therapy,Restrictive Diet Therapies,Restrictive Diet Therapy,Diet Modification,Therapy, Diet,Diet Modifications,Diet Therapies,Diet Therapies, Restriction,Diet Therapy, Restriction,Dietary Modifications,Dietary Restrictions,Modification, Diet,Modification, Dietary,Restriction, Dietary,Therapy, Restriction Diet,Therapy, Restrictive Diet
D004043 Dietary Fiber The remnants of plant cell walls that are resistant to digestion by the alimentary enzymes of man. It comprises various polysaccharides and lignins. Fiber, Dietary,Roughage,Wheat Bran,Bran, Wheat,Brans, Wheat,Dietary Fibers,Fibers, Dietary,Roughages,Wheat Brans
D004763 Glucagon-Like Peptides Peptides derived from proglucagon which is also the precursor of pancreatic GLUCAGON. Despite expression of proglucagon in multiple tissues, the major production site of glucagon-like peptides (GLPs) is the INTESTINAL L CELLS. GLPs include glucagon-like peptide 1, glucagon-like peptide 2, and the various truncated forms. Enteroglucagon,Enteroglucagons,Glucagon-Like Peptide,Glucagon-Like Polypeptide,Gut Glucagon,Glucagon-Like Polypeptides,Glucagon Like Peptide,Glucagon Like Peptides,Glucagon Like Polypeptide,Glucagon Like Polypeptides,Glucagon, Gut,Peptide, Glucagon-Like,Polypeptide, Glucagon-Like
D005502 Food Substances taken in by the body to provide nourishment. Foods
D005526 Food, Formulated Food and dietary formulations including elemental (chemically defined formula) diets, synthetic and semisynthetic diets, space diets, weight-reduction formulas, tube-feeding diets, complete liquid diets, and supplemental liquid and solid diets. Diet, Chemically Defined,Diet, Elemental,Diet, Formula,Diet, Synthetic,Dietary Formulations,Chemically Defined Diet,Synthetic Diet,Chemically Defined Diets,Dietary Formulation,Diets, Chemically Defined,Diets, Elemental,Diets, Formula,Diets, Synthetic,Elemental Diet,Elemental Diets,Foods, Formulated,Formulated Food,Formulated Foods,Formulation, Dietary,Formulations, Dietary
D005755 Gastrins A family of gastrointestinal peptide hormones that excite the secretion of GASTRIC JUICE. They may also occur in the central nervous system where they are presumed to be neurotransmitters. Gastrin
D005768 Gastrointestinal Hormones HORMONES secreted by the gastrointestinal mucosa that affect the timing or the quality of secretion of digestive enzymes, and regulate the motor activity of the digestive system organs. Enteric Hormone,Enteric Hormones,Gastrointestinal Hormone,Intestinal Hormone,Intestinal Hormones,Hormone, Enteric,Hormone, Gastrointestinal,Hormone, Intestinal,Hormones, Enteric,Hormones, Gastrointestinal,Hormones, Intestinal
D005856 Germ-Free Life Animals not contaminated by or associated with any foreign organisms. Axenic Animals,Gnotobiotics,Germfree Life,Animal, Axenic,Animals, Axenic,Axenic Animal,Germ Free Life,Gnotobiotic,Life, Germ-Free,Life, Germfree

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