Central prostaglandin D(2) stimulates food intake via the neuropeptide Y system in mice.
We found that prostaglandin (PG) D(2), the most abundant PG in the central nervous system, stimulates food intake after intracerebroventricular administration in mice. The orexigenic effect of PGD(2) was mimicked by a selective agonist for the DP(1) receptor among two receptor subtypes for PGD(2), and abolished by its antagonist. Central administration of an antagonist or antisense oligodeoxynucleotide for the DP(1) receptor remarkably decreased food intake, body weight and fat mass. Hypothalamic mRNA levels of lipocalin-type PGD synthase were up-regulated after fasting. The orexigenic activity of PGD(2) was also abolished by an antagonist for neuropeptide Y (NPY) Y(1) receptor. Taken together, PGD(2) may stimulate food intake through central DP(1) receptor coupled to the NPY system.
Ohinata
Kousaku
K
Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Gokasho Uji, Kyoto, Japan. ohinata@kais.kyoto-u.ac.jp
Takagi
Kuniko
K
Biyajima
Kyoko
K
Fujiwara
Yoko
Y
Fukumoto
Shingo
S
Eguchi
Naomi
N
Urade
Yoshihiro
Y
Asakawa
Akihiro
A
Fujimiya
Mineko
M
Inui
Akio
A
Yoshikawa
Masaaki
M
D000818:Animals; D001067:Appetite Depressants / Q000494:pharmacology; D002490:Central Nervous System / Q000187:drug effects*; D051545:Cyclooxygenase 1 / Q000235:genetics / Q000378:metabolism; D051546:Cyclooxygenase 2 / Q000235:genetics / Q000378:metabolism; D005215:Fasting; D005247:Feeding Behavior / Q000187:drug effects*; D005786:Gene Expression Regulation / Q000187:drug effects; D007031:Hypothalamus / Q000166:cytology / Q000187:drug effects / Q000201:enzymology; D007276:Injections, Intraventricular; D019746:Intramolecular Oxidoreductases / Q000235:genetics / Q000378:metabolism; D054834:Lipocalins / Q000235:genetics / Q000378:metabolism; D008297:Male; D051379:Mice; D009478:Neuropeptide Y / Q000378:metabolism*; D015230:Prostaglandin D2 / Q000008:administration & dosage / Q000378:metabolism / Q000494:pharmacology*; D021381:Protein Transport / Q000187:drug effects; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D011982:Receptors, Prostaglandin / Q000235:genetics / Q000378:metabolism; D018078:Receptors, Prostaglandin E / Q000235:genetics / Q000378:metabolism; D058309:Receptors, Prostaglandin E, EP4 Subtype
D001067:Appetite Depressants; D054834:Lipocalins; D009478:Neuropeptide Y; C545651:Ptger4 protein, mouse; D012333:RNA, Messenger; D011982:Receptors, Prostaglandin; D018078:Receptors, Prostaglandin E; D058309:Receptors, Prostaglandin E, EP4 Subtype; C527097:prostanoid D receptor 1, mouse; D051545:Cyclooxygenase 1; D051546:Cyclooxygenase 2; D019746:Intramolecular Oxidoreductases; C022466:prostaglandin R2 D-isomerase; D015230:Prostaglandin D2