Journal
PEPTIDES
Volume 27, Issue 8, Pages 1970-1980Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.peptides.2005.10.029
Keywords
in situ hybridization; immunohistochemistry; neuroanatomy; cocaine-amphetamine regulated transcript; review
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over the past 25 years the continuous discovery of novel neuropeptides has been a great aid in our understanding of central nervous system function. The neuropeptide CART was discovered in 1995 in a search for cocaine and amphetamine regulated transcripts in the striaturn, but subsequently found to be expressed at much higher levels in the hypothalamus. Further studies on the distribution of both CART mRNA and CART immunore activity has added CART to the long list of neuropeptides expressed at high levels in several parts of the hypothalamus playing key roles in homeostasis and reproduction. our extensive knowledge of hypothalamic function is due in great part to the high number of neuropeptides expressed in distinct hypothalamic cell groups, and naturally the discovery of CART led to myriad o papers examining possible roles played by CART peptides in different aspects of hypothalamic integration and reviewed elsewhere in this issue of Peptides. However, the rather widespread distribution of CART peptides in the brain certainly complicates the understanding of the role(s) played by this neurotransmitter and calls for careful interpretation of physiological/behavioral data. The aim of the present review is to focus attention on the rather complicated anatomy of the hypothalamic CART neurons, bearing in mind that a thorough understanding of brain function should be built on a solid anatomical foundation. (c) 2006-Elsevier Inc. All rights reserved.
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