Effects of 13-nle-motilin in man--inhibition of gastric evacuation and stimulation of pepsin secretion. 1975

H Ruppin, and S Domschke, and W Domschke, and E Wünsch, and E Jaeger, and L Demling

In 3 healthy male volunteers, graded doses of 13-norleucine-motilin (13-nle-motilin)--synthetic analogue of motilin and biologically equivalent to the natural polypeptide--were given intravenously on separate days. Gastric emptying, as determined by means of a radioisotope method, was slowed down dose-dependently by increasing doses of 13-nle-motilin. This was indicated by increasing "half-lives" and "starting indices" of the gastric emptying process, and by decreasing pyloric loss rates, respectively. The gastric pepsin output rose markedly from the basal level during intravenous infusion of 13-nle-motilin.

UI MeSH Term Description Entries
D007275 Injections, Intravenous Injections made into a vein for therapeutic or experimental purposes. Intravenous Injections,Injection, Intravenous,Intravenous Injection
D008297 Male Males
D009037 Motilin A peptide of about 22-amino acids isolated from the DUODENUM. At low pH it inhibits gastric motor activity, whereas at high pH it has a stimulating effect.
D009646 Norleucine An unnatural amino acid that is used experimentally to study protein structure and function. It is structurally similar to METHIONINE, however it does not contain SULFUR. Norleucine, L-Isomer,L-Isomer Norleucine,Norleucine, L Isomer
D010434 Pepsin A Formed from pig pepsinogen by cleavage of one peptide bond. The enzyme is a single polypeptide chain and is inhibited by methyl 2-diaazoacetamidohexanoate. It cleaves peptides preferentially at the carbonyl linkages of phenylalanine or leucine and acts as the principal digestive enzyme of gastric juice. Pepsin,Pepsin 1,Pepsin 3
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
D003864 Depression, Chemical The decrease in a measurable parameter of a PHYSIOLOGICAL PROCESS, including cellular, microbial, and plant; immunological, cardiovascular, respiratory, reproductive, urinary, digestive, neural, musculoskeletal, ocular, and skin physiological processes; or METABOLIC PROCESS, including enzymatic and other pharmacological processes, by a drug or other chemical. Chemical Depression,Chemical Depressions,Depressions, Chemical
D004305 Dose-Response Relationship, Drug The relationship between the dose of an administered drug and the response of the organism to the drug. Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
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
D005769 Gastrointestinal Motility The motor activity of the GASTROINTESTINAL TRACT. Intestinal Motility,Gastrointestinal Motilities,Intestinal Motilities,Motilities, Gastrointestinal,Motilities, Intestinal,Motility, Gastrointestinal,Motility, Intestinal

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