PMID- 25510319 OWN - NLM STAT- MEDLINE DCOM- 20151124 LR - 20220309 IS - 1558-1497 (Electronic) IS - 0197-4580 (Linking) VI - 36 IP - 3 DP - 2015 Mar TI - Central activation of PPAR-gamma ameliorates diabetes induced cognitive dysfunction and improves BDNF expression. PG - 1451-61 LID - S0197-4580(14)00634-4 [pii] LID - 10.1016/j.neurobiolaging.2014.09.028 [doi] AB - Diabetes and Alzheimer's disease share pathologic links toward cognitive deficits. Pharmacologic agonist of the nuclear receptor, peroxisomal proliferator-activating receptor gamma (PPARgamma), that is, rosiglitazone (rosi), are insulin sensitizing agents that improve memory in Alzheimer's disease. However, direct molecular signaling targets that improve memory by PPARgamma in the hippocampus have not been investigated. We compared outcomes from oral versus intracerebroventricular (ICV) administration of rosi on memory and changes in synaptic plasticity in type 2 diabetic (db/db) mice. Db/db mice treated with rosi (ICV) showed significant improvement in memory, long-term potentiation, and post-tetanic potentiation but did not improve peripheral insulin sensitivity. Gene and protein analysis revealed increased brain-derived neurotrophic factor (BDNF) in db/db mice treated with rosi (ICV). Transcriptional activation of exon IX as determined by luciferase assays confirmed PPARgamma regulation of BDNF promoter activity. Transient transfection of constitutively active PPARgamma plasmid in hippocampal neuronal cells induced increased BDNF, AMPA, and NMDA receptors expression and spine formation. Findings from the present study implicate a novel PPARgamma-BDNF molecular signaling mechanism as a potential therapeutic target for cognitive impairment. CI - Copyright (c) 2015 Elsevier Inc. All rights reserved. FAU - Kariharan, Thiruchelvam AU - Kariharan T AD - Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA. FAU - Nanayakkara, Gayani AU - Nanayakkara G AD - Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA. FAU - Parameshwaran, Kodeeswaran AU - Parameshwaran K AD - Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA. FAU - Bagasrawala, Inseyah AU - Bagasrawala I AD - Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA. FAU - Ahuja, Manuj AU - Ahuja M AD - Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA. FAU - Abdel-Rahman, Engy AU - Abdel-Rahman E AD - Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA. FAU - Amin, Arin T AU - Amin AT AD - Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA. FAU - Dhanasekaran, Murali AU - Dhanasekaran M AD - Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA. FAU - Suppiramaniam, Vishnu AU - Suppiramaniam V AD - Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA. FAU - Amin, Rajesh H AU - Amin RH AD - Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA. Electronic address: rha0003@auburn.edu. LA - eng PT - Comparative Study PT - Journal Article DEP - 20141002 PL - United States TA - Neurobiol Aging JT - Neurobiology of aging JID - 8100437 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Hypoglycemic Agents) RN - 0 (PPAR gamma) RN - 0 (Thiazolidinediones) RN - 05V02F2KDG (Rosiglitazone) SB - IM MH - Administration, Oral MH - Animals MH - Brain-Derived Neurotrophic Factor/*genetics/*metabolism MH - Cognition Disorders/*etiology/genetics/psychology/*therapy MH - Diabetes Mellitus, Type 2/*complications MH - Disease Models, Animal MH - Gene Expression/*drug effects MH - Hippocampus/metabolism MH - Hypoglycemic Agents/*administration & dosage/*pharmacology MH - Injections, Intraventricular MH - Insulin Resistance MH - Male MH - Memory/drug effects MH - Mice, Inbred C57BL MH - Molecular Targeted Therapy MH - Neuronal Plasticity/*drug effects/*genetics MH - PPAR gamma/*agonists/metabolism/*physiology MH - Rosiglitazone MH - Thiazolidinediones/*administration & dosage/*pharmacology OTO - NOTNLM OT - Cognitive deficits OT - Diabetes OT - Insulin resistance OT - Peroxisomal proliferator activating receptor OT - Synaptic plasticity EDAT- 2014/12/17 06:00 MHDA- 2015/12/15 06:00 CRDT- 2014/12/17 06:00 PHST- 2014/03/28 00:00 [received] PHST- 2014/08/25 00:00 [revised] PHST- 2014/09/27 00:00 [accepted] PHST- 2014/12/17 06:00 [entrez] PHST- 2014/12/17 06:00 [pubmed] PHST- 2015/12/15 06:00 [medline] AID - S0197-4580(14)00634-4 [pii] AID - 10.1016/j.neurobiolaging.2014.09.028 [doi] PST - ppublish SO - Neurobiol Aging. 2015 Mar;36(3):1451-61. doi: 10.1016/j.neurobiolaging.2014.09.028. Epub 2014 Oct 2.