PMID- 11164827 OWN - NLM STAT- MEDLINE DCOM- 20010510 LR - 20220331 IS - 0006-8993 (Print) IS - 0006-8993 (Linking) VI - 891 IP - 1-2 DP - 2001 Feb 9 TI - Differential expression of GDNF, BDNF, and NT-3 in the aging nigrostriatal system following a neurotoxic lesion. PG - 228-35 AB - Protein levels for brain-derived neurotrophic factor (BDNF), neurotrophin-3 (NT-3), and glial cell line-derived neurotrophic factor (GDNF) were measured in the striatum and ventral midbrain of young and aged Brown Norway/F344 F1 (F344BNF(1)) hybrid rats following a unilateral 6-hydroxydopamine (6-OHDA) lesion of the nigrostriatal pathway. At 2 weeks post-lesion, protein levels of BDNF and GDNF were higher in the denervated striatum when compared to the intact striatum for young (4-5 months old) but not old (31-33 months old) rats. Interestingly, in old rats BDNF protein in the denervated striatum was significantly lower than that measured in the intact striatum. At the same time point BDNF protein levels in the ventral midbrain were higher on the lesioned versus intact side for both young and old rats while no significant side differences were detected for GDNF protein in the ventral midbrain of young or old rats. No significant differences in NT-3 protein levels were detected between the lesioned and intact sides for striatal or ventral midbrain regions in either young or old brain. While no significant age effects were detected for BDNF or NT-3 protein, young rats showed higher GDNF protein levels in both the striatum (lesioned or intact) and ventral midbrain (lesioned or intact) than old rats. These data show that two endogenous neurotrophic factors, BDNF and GDNF, are differentially affected by a 6-OHDA lesion in the aging nigrostriatal system with young brain showing a significant compensatory increase of these two factors in the denervated striatum while no compensatory increase is observed in aged brain. FAU - Yurek, D M AU - Yurek DM AD - Department of Surgery/Neurosurgery, University of Kentucky College of Medicine, Health Sciences Research Building, Lexington, Kentucky, KY 40536-0305, USA. dyure00@pop.uky.edu FAU - Fletcher-Turner, A AU - Fletcher-Turner A LA - eng GR - NS35890/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - Netherlands TA - Brain Res JT - Brain research JID - 0045503 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Gdnf protein, rat) RN - 0 (Glial Cell Line-Derived Neurotrophic Factor) RN - 0 (Nerve Growth Factors) RN - 0 (Nerve Tissue Proteins) RN - 0 (Neurotoxins) RN - 0 (Neurotrophin 3) RN - 8HW4YBZ748 (Oxidopamine) SB - IM MH - Aging/*metabolism MH - Animals MH - Brain-Derived Neurotrophic Factor/*metabolism MH - Denervation/adverse effects MH - Glial Cell Line-Derived Neurotrophic Factor MH - Male MH - Neostriatum/cytology/*metabolism MH - *Nerve Growth Factors MH - Nerve Regeneration/*physiology MH - Nerve Tissue Proteins/*metabolism MH - Neural Pathways/cytology/metabolism MH - Neuronal Plasticity/physiology MH - Neurotoxins/pharmacology MH - Neurotrophin 3/*metabolism MH - Oxidopamine/pharmacology MH - Rats MH - Recovery of Function/physiology MH - Substantia Nigra/cytology/*metabolism EDAT- 2001/02/13 11:00 MHDA- 2001/05/22 10:01 CRDT- 2001/02/13 11:00 PHST- 2001/02/13 11:00 [pubmed] PHST- 2001/05/22 10:01 [medline] PHST- 2001/02/13 11:00 [entrez] AID - S0006-8993(00)03217-0 [pii] AID - 10.1016/s0006-8993(00)03217-0 [doi] PST - ppublish SO - Brain Res. 2001 Feb 9;891(1-2):228-35. doi: 10.1016/s0006-8993(00)03217-0.