Abstract：
:The identification of leptin and a range of novel anorectic and orexigenic peptides has focussed attention on the neural circuitry involved in the genesis of food intake and the reflex control of thermogenesis. Here, the neurotropic virus pseudorabies has been utilised in conjunction with the immunocytochemical localisation of a variety of neuroactive peptides and receptors to better define the pathways in the rat hypothalamus directed polysynaptically to the major thermogenic endpoint, brown adipose tissue. Infected neurones were detected initially in the stellate ganglion, then in the spinal cord followed by the appearance of third-order premotor neurones in the brainstem and hypothalamus. Within the hypothalamus these were present in the paraventricular nucleus, lateral hypothalamus, perifornical region, and retrochiasmatic nucleus. At slightly longer survival times virus-infected neurones appeared in the arcuate nucleus and dorsomedial hypothalamus. Neurones in the retrochiasmatic nucleus and in the adjacent lateral arcuate nucleus which project to the brown adipose tissue express cocaine- and amphetamine-regulated transcript, pro-opiomelanocortin and leptin receptors. Neurones in the lateral hypothalamus, a site traditionally associated with the promotion of feeding, project to brown adipose tissue and large numbers of these contained melanin-concentrating hormone and orexin A and B. These data provide part of an anatomical framework which subserves the regulation of energy expenditure.
journal_name
Neurosciencejournal_title
Neuroscienceauthors
Oldfield BJ,Giles ME,Watson A,Anderson C,Colvill LM,McKinley MJdoi
10.1016/s0306-4522(01)00555-3keywords:
subject
Has Abstractpub_date
2002-01-01 00:00:00pages
515-26issue
3eissn
0306-4522issn
1873-7544pii
S0306452201005553journal_volume
110pub_type
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