Neuropeptide Y Y1 receptor mRNA in rodent brain: Distribution and colocalization with melanocortin-4 receptor
| Autor: | Anthony N. Hollenberg, Carl J. Aschkenasi, Hongyan Liu, Brian Choi, Jeffrey M. Friedman, Toshiro Kishi, Marisol E. Lopez, Charlotte E. Lee, Joel K. Elmquist |
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| Rok vydání: | 2004 |
| Předmět: |
Male
Receptors Neuropeptide medicine.medical_specialty Hypothalamus Mice Transgenic In situ hybridization Biology RNA Complementary Receptors G-Protein-Coupled Rats Sprague-Dawley Mice Prosencephalon Internal medicine medicine Animals Tissue Distribution RNA Messenger In Situ Hybridization Fluorescence Brain Mapping Appetite Regulation General Neuroscience Central nucleus of the amygdala Colocalization Feeding Behavior Neuropeptide Y receptor Subfornical organ Rats Rhombencephalon Melanocortin 4 receptor Endocrinology medicine.anatomical_structure Forebrain Receptor Melanocortin Type 4 |
| Zdroj: | The Journal of Comparative Neurology. 482:217-243 |
| ISSN: | 1096-9861 0021-9967 |
| DOI: | 10.1002/cne.20432 |
| Popis: | The central neuropeptide Y (NPY) Y1 receptor (Y1-R) system has been implicated in feeding, endocrine, and autonomic regulation. In the present study, we systematically examined the brain distribution of Y1-R mRNA in rodents by using radioisotopic in situ hybridization histochemistry (ISHH) with a novel sensitive cRNA probe. Within the rat hypothalamus, Y1-R-specific hybridization was observed in the anteroventral periventricular, ventromedial preoptic, suprachiasmatic, paraventricular (PVH), dorsomedial, ventromedial, arcuate, and mamillary nuclei. In the rat, Y1-R mRNA expression was also seen in the subfornical organ, anterior hypothalamic area, dorsal hypothalamic area, and in the lateral hypothalamic area. In addition, Y1-R hybridization was evident in several extrahypothalamic forebrain and hindbrain sites involved in feeding and/or autonomic regulation in the rat. A similar distribution pattern of Y1-R mRNA was observed in the mouse brain. Moreover, by using a transgenic mouse line expressing green fluorescent protein under the control of the melanocortin-4 receptor (MC4-R) promoter, we observed Y1-R mRNA expression in MC4-R-positive cells in several brain sites such as the PVH and central nucleus of the amygdala. Additionally, dual-label ISHH demonstrated that hypophysiotropic PVH cells coexpress Y1-R and pro-thyrotropin-releasing hormone mRNAs in the rat. These observations are consistent with the proposed roles of the central NPY/Y1-R system in energy homeostasis. |
| Databáze: | OpenAIRE |
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