PMID- 19248822 OWN - NLM STAT- MEDLINE DCOM- 20091021 LR - 20090414 IS - 1873-7544 (Electronic) IS - 0306-4522 (Linking) VI - 160 IP - 2 DP - 2009 May 5 TI - Transforming growth factor-alpha induces neurogenesis and behavioral improvement in a chronic stroke model. PG - 470-83 LID - 10.1016/j.neuroscience.2009.02.029 [doi] AB - Transforming growth factor-alpha (TGFalpha) is a powerful endogenous mitogen and neurotrophic factor, which has previously been shown to induce a massive proliferative response in the brains of Parkinson's disease model rats injured by an acute neurotoxic lesion. We now show that TGFalpha can also produce a massive proliferative response in rat brains subjected to stroke caused by a middle cerebral artery occlusion (MCAO), even when the growth factor is administered as late as 4 weeks after injury. This combination of stimuli provokes DNA synthesis, shown by 5'-bromo-2-deoxyuridine incorporation, throughout the ependymal layer and subventricular zone (SVZ) of the forebrain during the 4 weeks of growth factor administration. The newly generated cells migrate preferentially along and ventral to the corpus callosum (CC) and external capsule to the site of the injury where many of them differentiate into several site-appropriate neuronal phenotypes in association with near complete (99%) behavioral recovery. We conclude that the injury response of endogenous neural stem cells as well as behavioral recovery can be significantly enhanced by application of TGFalpha, and that this approach represents a potential therapeutic strategy for chronic stroke and other neurological damage in human patients. FAU - Guerra-Crespo, M AU - Guerra-Crespo M AD - Department of Anatomy and Neurobiology, University of California, Irvine, 335 Medical Surgery II, Irvine, CA 92697, USA. magdagmx@hotmail.com FAU - Gleason, D AU - Gleason D FAU - Sistos, A AU - Sistos A FAU - Toosky, T AU - Toosky T FAU - Solaroglu, I AU - Solaroglu I FAU - Zhang, J H AU - Zhang JH FAU - Bryant, P J AU - Bryant PJ FAU - Fallon, J H AU - Fallon JH LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20090225 PL - United States TA - Neuroscience JT - Neuroscience JID - 7605074 RN - 0 (Transforming Growth Factor alpha) SB - IM MH - Adult Stem Cells/cytology/drug effects/*physiology MH - Analysis of Variance MH - Animals MH - Cell Differentiation/drug effects/physiology MH - Cell Movement/drug effects/physiology MH - Cell Proliferation/drug effects MH - Chronic Disease MH - Disease Models, Animal MH - Motor Activity/physiology MH - Neostriatum/cytology/pathology/physiology MH - Neurogenesis/drug effects/*physiology MH - Neurons/drug effects/pathology/*physiology MH - Rats MH - Recovery of Function/physiology MH - Spatial Behavior/physiology MH - Statistics, Nonparametric MH - Stroke/*pathology/physiopathology MH - Time Factors MH - Transforming Growth Factor alpha/administration & dosage/*physiology EDAT- 2009/03/03 09:00 MHDA- 2009/10/22 06:00 CRDT- 2009/03/03 09:00 PHST- 2008/11/06 00:00 [received] PHST- 2009/01/26 00:00 [revised] PHST- 2009/02/04 00:00 [accepted] PHST- 2009/03/03 09:00 [entrez] PHST- 2009/03/03 09:00 [pubmed] PHST- 2009/10/22 06:00 [medline] AID - S0306-4522(09)00189-4 [pii] AID - 10.1016/j.neuroscience.2009.02.029 [doi] PST - ppublish SO - Neuroscience. 2009 May 5;160(2):470-83. doi: 10.1016/j.neuroscience.2009.02.029. Epub 2009 Feb 25.