Cholecystokinin octapeptide: continuous picomole injections into the cerebral ventricles of sheep suppress feeding

M A Della-Fera, C A Baile


Cholecystokinin octapeptide decreased food intake in a dose-related manner when injected continuously into the lateral cerebral ventricles of sheep that had been deprived of food for 2, 4, 8, or 24 hours. In sheep deprived of food for 2 hours, as little as 0.01 picomole per minute suppressed feeding 35 percent 1 hour after beginning injection. Pentagastrin also decreased feeding in the 2-hour group, but only at a much higher dose range. Secretin had no effect. These findings support the hypothesis that cholecystokinin octapeptide acts on central nervous system structures that are involved in control of food intake.


Jul 1, 1977·Proceedings of the National Academy of Sciences of the United States of America·J E MullerR S Yalow
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