Technical Comments

Response to Comment on "Obestatin, a Peptide Encoded by the Ghrelin Gene, Opposes Ghrelin's Effects on Food Intake"

Science  09 Feb 2007:
Vol. 315, Issue 5813, pp. 766
DOI: 10.1126/science.1137136

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Abstract

We cannot reproduce our original findings on obestatin binding and activation of GPR39 receptors in vitro. However, we can reproduce our original findings on the in vivo effects of obestatin in mice (decreases in food intake, gastric emptying responses, and body weight gain) under precise experimental conditions. Further studies are needed to reveal the exact relation between obestatin and the G protein–coupled receptor GPR39.

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