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Centrally Administered Tryptophan Suppresses Food Intake in Free Fed Chicks through the Serotonergic System

  The effects of intracerebroventricular injection of L-tryptophan on feeding behavior and the levels of brain neurotransmitters (amino acids or monoamines) were investigated in ad libitum chicks. The tryptophan treatment (3 or 6μmol) significantly inhibited food intake in chicks at 30min postinject... Full description

Journal Title: The Journal of Poultry Science 2008, Vol.45(3), p.215
Main Author: Bungo, Takashi
Other Authors: Yahata, Kazuki , Izumi, Tomofumi , Dodo, Koh-Ichi , Yanagita, Kouichi , Shiraishi, Jun-Ichi , Ohta, Yoshiyuki , Fujita, Masanori
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 13467395 ; E-ISSN: 13490486
Link: http://search.proquest.com/docview/1439305890/?pq-origsite=primo
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title: Centrally Administered Tryptophan Suppresses Food Intake in Free Fed Chicks through the Serotonergic System
format: Article
creator:
  • Bungo, Takashi
  • Yahata, Kazuki
  • Izumi, Tomofumi
  • Dodo, Koh-Ichi
  • Yanagita, Kouichi
  • Shiraishi, Jun-Ichi
  • Ohta, Yoshiyuki
  • Fujita, Masanori
subjects:
  • Central Nervous System
  • Chick
  • Food Intake
  • Tryptophan
  • Serotonin
ispartof: The Journal of Poultry Science, 2008, Vol.45(3), p.215
description:   The effects of intracerebroventricular injection of L-tryptophan on feeding behavior and the levels of brain neurotransmitters (amino acids or monoamines) were investigated in ad libitum chicks. The tryptophan treatment (3 or 6μmol) significantly inhibited food intake in chicks at 30min postinjection. The levels of serotonin (5-HT) and its metabolite, 5-dihydroxyindolacetic acid, in chicks treated with tryptophan were significantly higher than those with saline at 15min postinjection. However, there were no differences in the levels of catecholamines (adrenaline, noradrenaline and dopamine) and amino acid neurotransmitters (e.g., γ-aminobutyric acid, glycine and glutamic acid). The tryptophan-induced anorexia tended to be attenuated by the 5-HT2A receptor antagonist ketanserin (10μg). These results suggest that the administration of tryptophan into the chick brain produces the anorexic effect, and that the change in brain 5-HT content may be involved in this anorexia.
language: eng
source:
identifier: ISSN: 13467395 ; E-ISSN: 13490486
fulltext: fulltext
issn:
  • 13467395
  • 1346-7395
  • 13490486
  • 1349-0486
url: Link


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titleCentrally Administered Tryptophan Suppresses Food Intake in Free Fed Chicks through the Serotonergic System
creatorBungo, Takashi ; Yahata, Kazuki ; Izumi, Tomofumi ; Dodo, Koh-Ichi ; Yanagita, Kouichi ; Shiraishi, Jun-Ichi ; Ohta, Yoshiyuki ; Fujita, Masanori
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identifierISSN: 13467395 ; E-ISSN: 13490486
description  The effects of intracerebroventricular injection of L-tryptophan on feeding behavior and the levels of brain neurotransmitters (amino acids or monoamines) were investigated in ad libitum chicks. The tryptophan treatment (3 or 6μmol) significantly inhibited food intake in chicks at 30min postinjection. The levels of serotonin (5-HT) and its metabolite, 5-dihydroxyindolacetic acid, in chicks treated with tryptophan were significantly higher than those with saline at 15min postinjection. However, there were no differences in the levels of catecholamines (adrenaline, noradrenaline and dopamine) and amino acid neurotransmitters (e.g., γ-aminobutyric acid, glycine and glutamic acid). The tryptophan-induced anorexia tended to be attenuated by the 5-HT2A receptor antagonist ketanserin (10μg). These results suggest that the administration of tryptophan into the chick brain produces the anorexic effect, and that the change in brain 5-HT content may be involved in this anorexia.
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titleCentrally Administered Tryptophan Suppresses Food Intake in Free Fed Chicks through the Serotonergic System
description  The effects of intracerebroventricular injection of L-tryptophan on feeding behavior and the levels of brain neurotransmitters (amino acids or monoamines) were investigated in ad libitum chicks. The tryptophan treatment (3 or 6μmol) significantly inhibited food intake in chicks at 30min postinjection. The levels of serotonin (5-HT) and its metabolite, 5-dihydroxyindolacetic acid, in chicks treated with tryptophan were significantly higher than those with saline at 15min postinjection. However, there were no differences in the levels of catecholamines (adrenaline, noradrenaline and dopamine) and amino acid neurotransmitters (e.g., γ-aminobutyric acid, glycine and glutamic acid). The tryptophan-induced anorexia tended to be attenuated by the 5-HT2A receptor antagonist ketanserin (10μg). These results suggest that the administration of tryptophan into the chick brain produces the anorexic effect, and that the change in brain 5-HT content may be involved in this anorexia.
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abstract  The effects of intracerebroventricular injection of L-tryptophan on feeding behavior and the levels of brain neurotransmitters (amino acids or monoamines) were investigated in ad libitum chicks. The tryptophan treatment (3 or 6μmol) significantly inhibited food intake in chicks at 30min postinjection. The levels of serotonin (5-HT) and its metabolite, 5-dihydroxyindolacetic acid, in chicks treated with tryptophan were significantly higher than those with saline at 15min postinjection. However, there were no differences in the levels of catecholamines (adrenaline, noradrenaline and dopamine) and amino acid neurotransmitters (e.g., γ-aminobutyric acid, glycine and glutamic acid). The tryptophan-induced anorexia tended to be attenuated by the 5-HT2A receptor antagonist ketanserin (10μg). These results suggest that the administration of tryptophan into the chick brain produces the anorexic effect, and that the change in brain 5-HT content may be involved in this anorexia.
copIbaraki
pubJapan Science and Technology Agency
urlhttp://search.proquest.com/docview/1439305890/
pages215-219
doi10.2141/jpsa.45.215