PMID- 8193933 OWN - NLM STAT- MEDLINE DCOM- 19940627 LR - 20190719 IS - 0361-9230 (Print) IS - 0361-9230 (Linking) VI - 34 IP - 1 DP - 1994 TI - Vomeronasal organ-mediated induction of fos in the central accessory olfactory pathways in repetitively mated female rats. PG - 53-9 AB - Removal of the VNO significantly reduced the enhancement of lordosis and the induction of fos immunoreactivity in luteinizing hormone-releasing hormone (LHRH) neurons in ovariectomized estrogen-primed rats. There was a significant positive correlation between the two variables. In the accessory olfactory bulb (AOB) of the repetitively mated rats, the number of fos-positive cells in the granule (G) cell layer was significantly lower in the VNO-removed rats, whereas that in the mitral (M) cell layer was not significantly different between VNO-removed and VNO-sham females. The G/M ratio (calculated by dividing the mean number of fos-positive cells in the G cell layer by that in the M cell layer), taken as an estimate of the output of the AOB, was relatively larger in the VN-sham as compared with the VNO-removed rats. There were significant positive correlations between G/M ratio and the increase in LQ and between the G/M ratio and the percentage of fos-positive LHRH cells. The positive correlation between the number of fos-positive cells in the posterodorsal medial amygdala (PDMA) and the increase in LQ and that between the number of fos-positive cells in the PDMA and the percentage of fos-positive LHRH cells were significant, supporting the role of the medial nucleus of amygdala in lordosis. However, the correlation between G/M ratio and the number of fos-positive cells in the PDMA was not significant, indicating that fos immunoreactivity in the PDMA is not directly related to that in the AOB.(ABSTRACT TRUNCATED AT 250 WORDS) FAU - Rajendren, G V AU - Rajendren GV AD - Department of Physiology, University of Texas Southwestern Medical Center at Dallas, TX 75235-9040. FAU - Moss, R L AU - Moss RL LA - eng GR - MH41784/MH/NIMH NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Brain Res Bull JT - Brain research bulletin JID - 7605818 RN - 0 (Estrogens) RN - 0 (Proto-Oncogene Proteins c-fos) RN - 33515-09-2 (Gonadotropin-Releasing Hormone) SB - IM MH - Amygdala/cytology/metabolism MH - Animals MH - *Copulation MH - Estrogens/pharmacology MH - Female MH - Gonadotropin-Releasing Hormone/metabolism MH - Immunohistochemistry MH - Male MH - Nasal Cavity/*physiology MH - Nasal Septum/*physiology MH - Neurons/metabolism/physiology MH - Olfactory Bulb/cytology/metabolism MH - Olfactory Pathways/*metabolism MH - Ovariectomy MH - Proto-Oncogene Proteins c-fos/*metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Sexual Behavior, Animal/physiology EDAT- 1994/01/01 00:00 MHDA- 1994/01/01 00:01 CRDT- 1994/01/01 00:00 PHST- 1994/01/01 00:00 [pubmed] PHST- 1994/01/01 00:01 [medline] PHST- 1994/01/01 00:00 [entrez] AID - 0361-9230(94)90186-4 [pii] AID - 10.1016/0361-9230(94)90186-4 [doi] PST - ppublish SO - Brain Res Bull. 1994;34(1):53-9. doi: 10.1016/0361-9230(94)90186-4.