PMID- 22735491 OWN - NLM STAT- MEDLINE DCOM- 20121105 LR - 20130408 IS - 1090-2430 (Electronic) IS - 0014-4886 (Linking) VI - 237 IP - 1 DP - 2012 Sep TI - Behavioral phenotype and BDNF differences related to apoE isoforms and sex in young transgenic mice. PG - 116-25 LID - 10.1016/j.expneurol.2012.06.015 [doi] AB - Human apolipoprotein E (apoE) plays an important role in lipid transport and distribution, being involved in neurite growth and neuroprotection in the brain. In humans, the apoE4 isoform is a risk factor for developing Azheimer's disease (AD), while apoE2 seems to provide neuroprotection. However, very little information is available on apoE2 genotype. In the present study, we have characterized behavioral and learning phenotypes in young transgenic mice apoE2, apoE3 and apoE4 of both sexes. We have also determined the levels of brain-derived neurotrophic factor (BDNF) and its receptor TrkB in cortex and hippocampus of male and female mice carrying either genotype. Our results show a worse performance of apoE4 and apoE2 mice in the acquisition of a spatial task compared to apoE3 mice, and a worse retention in apoE2 mice compared to the other two genotypes. On the other hand, an increase in the exploration of an open-field, which is compatible with a hyperactive behavior, was found in apoE2 females, while a decreased activity was observed in apoE4 mice. Increased BDNF levels in the frontal cortex were observed in apoE2 mice compared to apoE3. These results underscore behavioral differences between apoE genotypes in young mice, as well as the existence of interactions between genotype and gender, providing new valuable information on the apoE2 genotype. CI - Copyright (c) 2012 Elsevier Inc. All rights reserved. FAU - Reverte, Ingrid AU - Reverte I AD - Laboratory of Toxicology and Environmental Health, School of Medicine, IISPV, Universitat Rovira i Virgili, Reus, Spain. FAU - Klein, Anders Bue AU - Klein AB FAU - Ratner, Cecilia AU - Ratner C FAU - Domingo, Jose L AU - Domingo JL FAU - Colomina, Maria Teresa AU - Colomina MT LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120624 PL - United States TA - Exp Neurol JT - Experimental neurology JID - 0370712 RN - 0 (Apolipoprotein E2) RN - 0 (Apolipoprotein E3) RN - 0 (Apolipoprotein E4) RN - 0 (Apolipoproteins E) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Protein Isoforms) SB - IM CIN - Exp Neurol. 2013 Mar;241:1-4. PMID: 23262123 MH - Age Factors MH - Animals MH - Apolipoprotein E2/genetics MH - Apolipoprotein E3/genetics MH - Apolipoprotein E4/genetics MH - Apolipoproteins E/biosynthesis/genetics/*physiology MH - Behavior, Animal/*physiology MH - Brain-Derived Neurotrophic Factor/genetics/*physiology MH - Female MH - Frontal Lobe/physiology MH - Genotype MH - Hippocampus/physiology MH - Male MH - Mice MH - Mice, Transgenic MH - *Phenotype MH - Protein Isoforms/biosynthesis/genetics/physiology MH - Sex Characteristics MH - Spatial Behavior/physiology EDAT- 2012/06/28 06:00 MHDA- 2012/11/06 06:00 CRDT- 2012/06/28 06:00 PHST- 2012/04/30 00:00 [received] PHST- 2012/06/14 00:00 [revised] PHST- 2012/06/16 00:00 [accepted] PHST- 2012/06/28 06:00 [entrez] PHST- 2012/06/28 06:00 [pubmed] PHST- 2012/11/06 06:00 [medline] AID - S0014-4886(12)00257-9 [pii] AID - 10.1016/j.expneurol.2012.06.015 [doi] PST - ppublish SO - Exp Neurol. 2012 Sep;237(1):116-25. doi: 10.1016/j.expneurol.2012.06.015. Epub 2012 Jun 24.