Document Detail

Effects of agouti-related protein, orexin and melanin-concentrating hormone on oxygen consumption in mice.
MedLine Citation:
PMID:  12239605     Owner:  NLM     Status:  MEDLINE    
Neuropeptides in the hypothalamus play a pivotal role in the regulation of energy balance. Agouti-related protein (AGRP), orexin and melanin-concentrating hormone (MCH) have been identified in the hypothalamus as orexigenic peptides. This study was undertaken to investigate the effects of AGRP, orexin and MCH on oxygen consumption. Oxygen consumption was determined by an O2/CO2 metabolism measuring system at 22 degrees C. Mice were kept unrestrained in the chamber without food or water during the light cycle, and the oxygen consumption was measured for 2 h after intra-cerebroventricular (ICV) administration. ICV administered AGRP (1 nmol/mouse) significantly decreased oxygen consumption compared to ACSF-treated controls. Orexin (1 nmol/mouse) significantly increased oxygen consumption, while MCH (1 nmol/mouse) had no significant effect compared to ACSF-treated controls. These results suggest that AGRP, orexin and MCH might have different effects on energy expenditure, thereby regulating appetite and body weight.
Akihiro Asakawa; Akio Inui; Kyoko Goto; Hideki Yuzuriha; Yoshiyuki Takimoto; Toshio Inui; Goro Katsuura; Masayuki A Fujino; Michael M Meguid; Masato Kasuga
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  International journal of molecular medicine     Volume:  10     ISSN:  1107-3756     ISO Abbreviation:  Int. J. Mol. Med.     Publication Date:  2002 Oct 
Date Detail:
Created Date:  2002-09-19     Completed Date:  2003-03-11     Revised Date:  2011-08-03    
Medline Journal Info:
Nlm Unique ID:  9810955     Medline TA:  Int J Mol Med     Country:  Greece    
Other Details:
Languages:  eng     Pagination:  523-5     Citation Subset:  IM    
Division of Diabetes, Digestive and kidney Diseases, Department of Clinical Molecular Medicine, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan.
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MeSH Terms
Agouti-Related Protein
Carrier Proteins / administration & dosage,  pharmacology*
Hypothalamic Hormones / administration & dosage,  pharmacology*
Hypothalamus / secretion
Intercellular Signaling Peptides and Proteins
Intracellular Signaling Peptides and Proteins*
Melanins / administration & dosage,  pharmacology*
Neuropeptides / administration & dosage,  pharmacology*
Oxygen Consumption / drug effects*
Peptides / administration & dosage,  pharmacology
Pituitary Hormones / administration & dosage,  pharmacology*
Proteins / administration & dosage,  pharmacology*
Reg. No./Substance:
0/Agouti-Related Protein; 0/Agrp protein, mouse; 0/Carrier Proteins; 0/Hypothalamic Hormones; 0/Intercellular Signaling Peptides and Proteins; 0/Intracellular Signaling Peptides and Proteins; 0/Melanins; 0/Neuropeptides; 0/Peptides; 0/Pituitary Hormones; 0/Proteins; 0/orexins; 67382-96-1/melanin-concentrating hormone

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