title: Dynamics of appetite-mediated gene expression in daidzein-fed female rats in the meal-feeding method.
abstract: We previously found that daidzein decreased food intake in female rats. The present study aimed to elucidate the relationship between dynamics of appetite-mediated neuropeptides and the anorectic effect of daidzein. We examined appetite-mediated gene expression in the hypothalamus and small intestine during the 3 meals per day feeding method. Daidzein had an anorectic effect specifically at the second feeding. Neuropeptide-Y (NPY) and galanin mRNA levels in the hypothalamus were significantly higher after feeding in the control but not in the daidzein group, suggesting that daidzein attenuated the postprandial increase in NPY and galanin expression. The daidzein group had higher corticotrophin-releasing hormone (CRH) mRNA levels in the hypothalamus after feeding, and increased cholelcystokinin (CCK) mRNA levels in the small intestine, suggesting that CCK is involved in the hypothalamic regulation of this　anorectic effect. Therefore, daidzein may induce anorexia by suppressing expression of NPY and galanin and increasing expression of CRH in the hypothalamus.
authors.affiliation: a Faculty of Agriculture, Department of Biological Resources , Ehime University , Matsuyama , Japan.
authors.forename: Mina
authors.initials: M
authors.lastname: Fujitani
authors.forename: Takafumi
authors.initials: T
authors.lastname: Mizushige
authors.forename: Keshab
authors.initials: K
authors.lastname: Bhattarai
authors.forename: Asami
authors.initials: A
authors.lastname: Iwahara
authors.forename: Ryojiro
authors.initials: R
authors.lastname: Aida
authors.forename: Tomomi
authors.initials: T
authors.lastname: Segawa
authors.forename: Taro
authors.initials: T
authors.lastname: Kishida
mesh_terms: D000818:Animals; D000855:Anorexia / Q000235:genetics* / Q000473:pathology; D001066:Appetite / Q000235:genetics* / Q000502:physiology; D001835:Body Weight; D004435:Eating / Q000187:drug effects / Q000235:genetics*; D005248:Feeding Methods; D005260:Female; D019004:Galanin / Q000096:biosynthesis* / Q000235:genetics; D005786:Gene Expression Regulation / Q000187:drug effects; D006801:Humans; D007031:Hypothalamus / Q000378:metabolism / Q000502:physiology; D007529:Isoflavones / Q000008:administration & dosage; D009478:Neuropeptide Y / Q000096:biosynthesis* / Q000235:genetics; D012333:RNA, Messenger / Q000096:biosynthesis; D051381:Rats; D011949:Receptors, Cholecystokinin / Q000096:biosynthesis; D018019:Receptors, Corticotropin-Releasing Hormone / Q000096:biosynthesis
chemical_list: D007529:Isoflavones; D009478:Neuropeptide Y; D012333:RNA, Messenger; D011949:Receptors, Cholecystokinin; D018019:Receptors, Corticotropin-Releasing Hormone; C004742:daidzein; D019004:Galanin
keywords: appetite; cholelcystokinin; daidzein; galanin; neuropeptide-Y(NPY)