PMID- 12231458 OWN - NLM STAT- MEDLINE DCOM- 20021126 LR - 20190614 IS - 0006-8993 (Print) IS - 0006-8993 (Linking) VI - 951 IP - 1 DP - 2002 Sep 27 TI - Regulation of neuropeptide Y in the rat amygdala following unilateral olfactory bulbectomy. PG - 69-76 AB - While the mechanisms are not fully understood, olfactory bulbectomy (OBX) is a well-known rat model of depression and depression-related disorders such as anxiety and aggression. Alterations in neuropeptide Y (NPY) levels in the brain have been linked to depression and have been shown to be involved in the response to stress. This study explored the possible regulation of NPY immunoreactivity in specific regions of the amygdala 14 days after OBX in adult male Sprague-Dawley rats (n=6). Unilateral OBX and immunohistochemistry permitted comparisons of NPY in the ipsilateral amygdala with NPY in the contralateral (sham) amygdala. OBX resulted in significant increases (P<0.05) in NPY immunoreactivity in the anterior medial amygdala (threefold) and the posterior medial amygdala (2.5-fold). These regions receive projections from the accessory olfactory bulb (AOB). In contrast, the anterior and posterolateral cortical nuclei of the amygdala receive projections from the main olfactory bulb (MOB). NPY was not increased in these nuclei. These data show that not only does OBX increase NPY immunoreactivity in the amygdala, but also suggest that the AOB plays a prominent role in this regulation. FAU - Rutkoski, Nancy J AU - Rutkoski NJ AD - Program in Neuroscience and Department of Nutrition, Food and Exercise Sciences, 237 Biomedical Research Facility, Florida State University Tallahassee, FL 32306-4340, USA. FAU - Lerant, Anna A AU - Lerant AA FAU - Nolte, Christopher M AU - Nolte CM FAU - Westberry, Jenne AU - Westberry J FAU - Levenson, Cathy W AU - Levenson CW LA - eng PT - Journal Article PL - Netherlands TA - Brain Res JT - Brain research JID - 0045503 RN - 0 (Neuropeptide Y) RN - 0 (Receptors, Neuropeptide Y) SB - IM MH - Amygdala/*metabolism/physiopathology MH - Animals MH - Denervation MH - Depressive Disorder/*metabolism/physiopathology MH - Disease Models, Animal MH - Functional Laterality/physiology MH - Immunohistochemistry MH - Male MH - Neuropeptide Y/*metabolism MH - Olfactory Bulb/*injuries/physiopathology/surgery MH - Olfactory Pathways/*injuries/physiopathology/surgery MH - Presynaptic Terminals/metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Receptors, Neuropeptide Y/metabolism MH - Stress, Physiological/*metabolism/physiopathology MH - Up-Regulation/*physiology EDAT- 2002/09/17 10:00 MHDA- 2002/11/28 04:00 CRDT- 2002/09/17 10:00 PHST- 2002/09/17 10:00 [pubmed] PHST- 2002/11/28 04:00 [medline] PHST- 2002/09/17 10:00 [entrez] AID - S0006899302031360 [pii] AID - 10.1016/s0006-8993(02)03136-0 [doi] PST - ppublish SO - Brain Res. 2002 Sep 27;951(1):69-76. doi: 10.1016/s0006-8993(02)03136-0.