PMID- 26355496 OWN - NLM STAT- MEDLINE DCOM- 20161024 LR - 20181113 IS - 1096-9861 (Electronic) IS - 0021-9967 (Print) IS - 0021-9967 (Linking) VI - 524 IP - 5 DP - 2016 Apr 1 TI - Sex and age differences in brain-derived neurotrophic factor and vimentin in the zebra finch song system: Relationships to newly generated cells. PG - 1081-96 LID - 10.1002/cne.23893 [doi] AB - The neural song circuit is enhanced in male compared with female zebra finches due to differential rates of incorporation and survival of cells between the sexes. Two double-label immunohistochemical experiments were conducted to increase the understanding of relationships between newly generated cells (marked with bromodeoxyuridine [BrdU]) and those expressing brain-derived neurotrophic factor (BDNF) and vimentin, a marker for radial glia. The song systems of males and females were investigated at posthatching day 25 during a heightened period of sexual differentiation (following BrdU injections on days 6-10) and in adulthood (following a parallel injection paradigm). In both HVC (proper name) and the robust nucleus of the arcopallium (RA), about half of the BrdU-positive cells expressed BDNF across sexes and ages. Less than 10% of the BDNF-positive cells expressed BrdU, but this percentage was greater in juveniles than adults. Across both brain regions, more BDNF-positive cells were detected in males compared with females. In RA, the number of these cells was also greater in juveniles than adults. In HVC, the average cross-sectional area covered by the vimentin labeling was greater in males than females and in juveniles compared with adults. In RA, more vimentin was detected in juveniles than adults, and within adults it was greater in females. In juveniles only, BrdU-positive cells appeared in contact with vimentin-labeled fibers in HVC, RA, and Area X. Collectively, the results are consistent with roles of BDNF- and vimentin-labeled cells influencing sexually differentiated plasticity of the song circuit. CI - (c) 2015 Wiley Periodicals, Inc. FAU - Tang, Yu Ping AU - Tang YP AD - Department of Psychology, Michigan State University, East Lansing, Michigan, 48824. FAU - Wade, Juli AU - Wade J AD - Neuroscience Program, Michigan State University, East Lansing, Michigan, 48824. LA - eng GR - R01 MH096705/MH/NIMH NIH HHS/United States GR - R01-MH096705/MH/NIMH NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20151015 PL - United States TA - J Comp Neurol JT - The Journal of comparative neurology JID - 0406041 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Vimentin) SB - IM MH - Age Factors MH - Animals MH - Brain/cytology/*metabolism MH - Brain-Derived Neurotrophic Factor/*metabolism MH - Female MH - Finches MH - Humans MH - Male MH - Neurogenesis/*physiology MH - *Sex Characteristics MH - Vimentin/*metabolism MH - Vocalization, Animal/*physiology PMC - PMC4731248 MID - NIHMS721891 OTO - NOTNLM OT - AB_514483 OT - AB_528504 OT - AB_630940 OT - neurogenesis OT - radial glia OT - sexual differentiation OT - songbird EDAT- 2015/09/12 06:00 MHDA- 2016/10/25 06:00 PMCR- 2017/04/01 CRDT- 2015/09/11 06:00 PHST- 2015/06/16 00:00 [received] PHST- 2015/08/21 00:00 [revised] PHST- 2015/08/26 00:00 [accepted] PHST- 2015/09/11 06:00 [entrez] PHST- 2015/09/12 06:00 [pubmed] PHST- 2016/10/25 06:00 [medline] PHST- 2017/04/01 00:00 [pmc-release] AID - 10.1002/cne.23893 [doi] PST - ppublish SO - J Comp Neurol. 2016 Apr 1;524(5):1081-96. doi: 10.1002/cne.23893. Epub 2015 Oct 15.