PMID- 22177996 OWN - NLM STAT- MEDLINE DCOM- 20120326 LR - 20211021 IS - 1090-2430 (Electronic) IS - 0014-4886 (Print) IS - 0014-4886 (Linking) VI - 233 IP - 2 DP - 2012 Feb TI - Frontotemporal lobar degeneration-related proteins induce only subtle memory-related deficits when bilaterally overexpressed in the dorsal hippocampus. PG - 807-14 LID - 10.1016/j.expneurol.2011.12.002 [doi] AB - Frontotemporal lobar degeneration (FTLD) is a neurodegenerative disease that involves cognitive decline and dementia. To model the hippocampal neurodegeneration and memory-related behavioral impairment that occurs in FTLD and other tau and TDP-43 proteinopathy diseases, we used an adeno-associated virus serotype 9 (AAV9) vector to induce bilateral expression of either microtubule-associated protein tau or transactive response DNA binding protein 43 kDa (TDP-43) in adult rat dorsal hippocampus. Human wild-type forms of tau or TDP-43 were expressed. The vectors/doses were designed for moderate expression levels within neurons. Rats were evaluated for acquisition and retention in the Morris water task over 12 weeks after gene transfer. Neither vector altered acquisition performance compared to controls. In measurements of retention, there was impairment in the TDP-43 group. Histological examination revealed specific loss of dentate gyrus granule cells and concomitant gliosis proximal to the injection site in the TDP-43 group, with shrinkage of the dorsal hippocampus. Despite specific tau pathology, the tau gene transfer surprisingly did not cause obvious neuronal loss or behavioral impairment. The data demonstrate that TDP-43 produced mild behavioral impairment and hippocampal neurodegeneration in rats, whereas tau did not. The models could be of value for studying mechanisms of FTLD and other diseases with tau and TDP-43 pathology in the hippocampus including Alzheimer's disease, with relevance to early stage mild impairment. CI - Copyright (c) 2011 Elsevier Inc. All rights reserved. FAU - Dayton, Robert D AU - Dayton RD AD - Department of Pharmacology, Toxicology, and Neuroscience, Louisiana State University Health Sciences Center, 1501 Kings Hwy, Shreveport, LA 71130, USA. FAU - Wang, David B AU - Wang DB FAU - Cain, Cooper D AU - Cain CD FAU - Schrott, Lisa M AU - Schrott LM FAU - Ramirez, Julio J AU - Ramirez JJ FAU - King, Michael A AU - King MA FAU - Klein, Ronald L AU - Klein RL LA - eng GR - R01 NS048450/NS/NINDS NIH HHS/United States GR - R01 NS048450-04/NS/NINDS NIH HHS/United States GR - 48450/PHS HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20111209 PL - United States TA - Exp Neurol JT - Experimental neurology JID - 0370712 RN - 0 (DNA-Binding Proteins) RN - 0 (tau Proteins) SB - IM MH - Animals MH - Cattle MH - Cell Death/genetics MH - DNA-Binding Proteins/*biosynthesis/genetics MH - Frontotemporal Lobar Degeneration/genetics/*metabolism/pathology MH - *Gene Transfer Techniques MH - Hippocampus/*metabolism/pathology MH - Humans MH - Male MH - Maze Learning/physiology MH - Memory Disorders/genetics/*metabolism/pathology MH - Rats MH - Rats, Sprague-Dawley MH - tau Proteins/*biosynthesis/genetics PMC - PMC3272160 MID - NIHMS343800 EDAT- 2011/12/20 06:00 MHDA- 2012/03/27 06:00 PMCR- 2013/02/01 CRDT- 2011/12/20 06:00 PHST- 2011/07/15 00:00 [received] PHST- 2011/11/01 00:00 [revised] PHST- 2011/12/01 00:00 [accepted] PHST- 2011/12/20 06:00 [entrez] PHST- 2011/12/20 06:00 [pubmed] PHST- 2012/03/27 06:00 [medline] PHST- 2013/02/01 00:00 [pmc-release] AID - S0014-4886(11)00453-5 [pii] AID - 10.1016/j.expneurol.2011.12.002 [doi] PST - ppublish SO - Exp Neurol. 2012 Feb;233(2):807-14. doi: 10.1016/j.expneurol.2011.12.002. Epub 2011 Dec 9.