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Apo AIV at 100 \u03bcg\/kg reduced food intake significantly relative to the saline control for 1 h, as did doses of CCK-8 at or above 0.125 \u03bcg\/kg. Doses of apo AIV (50 \u03bcg\/kg) or CCK (0.06 \u03bcg\/kg) alone had no effect on food intake. However, when these subthreshold doses of apo AIV and CCK were administered together, the combination produced a significant inhibition of food intake relative to saline controls ( P &lt; 0.001), and the duration of the effect was longer than that caused by the administration of either apo AIV or CCK alone. The satiation effect produced by CCK-8 + apo AIV was attenuated by lorglumide, a CCK1 receptor antagonist. We conclude that, whereas the intraperitoneal administration of doses of either recombinant apo AIV or CCK at or above threshold levels reduces food intake, the coadministration of subthreshold doses of the two peptides is highly satiating and works via CCK1 receptor.<\/jats:p>","DOI":"10.1152\/ajpregu.00329.2007","type":"journal-article","created":{"date-parts":[[2007,7,19]],"date-time":"2007-07-19T00:45:18Z","timestamp":1184805918000},"page":"R1490-R1494","source":"Crossref","is-referenced-by-count":39,"title":["Interaction of apolipoprotein AIV with cholecystokinin on the control of food intake"],"prefix":"10.1152","volume":"293","author":[{"given":"Chun Min","family":"Lo","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dian Ming","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kevin","family":"Pearson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Liyun","family":"Ma","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"William","family":"Sun","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Randall R.","family":"Sakai","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"W. 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