HMR-1426 is gastric emptying inhibitor. HMR1426 shows an anorectic potential in rats and decreased body weight and fat mass. This was achieved solely by reducing food intake without influencing overall energy expenditure or behavior.
SNAP-7941 is a selective antagonist of the melanin concentrating hormone receptor MCH1 with promising anxiolytic, antidepressant and anorectic effects in initial animal studies.
Peptide YY (PYY) is a 36-amino acid peptide and anorectic gut hormone agonist for the neuropeptide Y receptors Y1, Y2, Y5, and Y6 with EC50 values of 0.7, 0.58, 1, and 0.8 nM, respectively, for supression of forskolin-induced cAMP accumulation. PYY is cleaved in vivo to PYY (3-36) . Release of PYY occurs postprandially in proportion to calorie intake from intestinal enteroendocrine L cells, indicating it may be a satiety signal. In humans, PYY inhibits food intake and gastrointestinal transit in both lean and obese subjects.