PMID- 17051637 OWN - NLM STAT- MEDLINE DCOM- 20070226 LR - 20071203 IS - 1615-9853 (Print) IS - 1615-9853 (Linking) VI - 6 IP - 22 DP - 2006 Nov TI - Proteomic analysis of the ventromedial nucleus of the hypothalamus (pars lateralis) in the female rat. PG - 6066-74 AB - The use of proteomics to study changes in the expression of CNS proteins, which may underlie the regulation of physiological and/or behavioral responses, represents an emerging application of this technology. In the current study, the Palkovits' microdissection method was evaluated as a means of obtaining proteomic data from discrete brain nuclei. The pars lateralis of the ventromedial nucleus of the hypothalamus (VMN) was chosen for the initial studies because of its established role in the expression of gonadal hormone dependent female sexual behavior. The VMN from ovariectomized rats was microdissected from 300 microm frozen brain sections using a 500 microm punch. Total proteins were separated using 2-DE. A group consensus of 432 protein spots, visualized by SYPRO Ruby stain, was obtained from gels from four independent VMN samples. A low mean CV and high gel-to-gel correlation coefficients indicate that reproducible 2-DE gels can be generated from microdissected tissue samples. Proteins from the mediobasal hypothalamus (MBH) were also separated on 2-DE gels. Evaluation of the 2-DE maps from the VMN and the MBH revealed different protein profiles, and indicates that microdissection improves the detection of low-abundance proteins, and reduces the relative occurrence of abundant proteins on 2-DE maps. FAU - Mo, Bing AU - Mo B AD - Department of Biology and Neuroscience Group, University of South Dakota, Vermillion, SD 57069, USA. FAU - Callegari, Eduardo AU - Callegari E FAU - Telefont, Martin AU - Telefont M FAU - Renner, Kenneth J AU - Renner KJ LA - eng GR - 2 P20 RR016479/RR/NCRR NIH HHS/United States GR - R01 DA019921-01/DA/NIDA NIH HHS/United States GR - RR15567P20/RR/NCRR NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PL - Germany TA - Proteomics JT - Proteomics JID - 101092707 RN - 0 (Polyenes) RN - 1403-95-8 (mediocidin) SB - IM MH - Animals MH - Electrophoresis, Gel, Two-Dimensional/methods MH - Female MH - Mass Spectrometry/methods MH - Polyenes/metabolism MH - Proteomics/*methods MH - Rats MH - Rats, Sprague-Dawley MH - Ventromedial Hypothalamic Nucleus/*metabolism EDAT- 2006/10/20 09:00 MHDA- 2007/02/27 09:00 CRDT- 2006/10/20 09:00 PHST- 2006/10/20 09:00 [pubmed] PHST- 2007/02/27 09:00 [medline] PHST- 2006/10/20 09:00 [entrez] AID - 10.1002/pmic.200600072 [doi] PST - ppublish SO - Proteomics. 2006 Nov;6(22):6066-74. doi: 10.1002/pmic.200600072.