PMID- 25934492 OWN - NLM STAT- MEDLINE DCOM- 20160404 LR - 20150527 IS - 1872-7549 (Electronic) IS - 0166-4328 (Linking) VI - 290 DP - 2015 Sep 1 TI - Tumor necrosis factor alpha and its receptors in behaviour and neurobiology of adult mice, in the absence of an immune challenge. PG - 51-60 LID - S0166-4328(15)00295-8 [pii] LID - 10.1016/j.bbr.2015.04.040 [doi] AB - Tumor necrosis factor alpha (TNF-alpha) is a vital component of the immune system and CNS. We previously showed that 3-month-old TNF-alpha and TNF-alpha receptor knockout mice had impaired cognition, whilst at 12-months-old mice had better cognition. To extend these findings on possible age-dependent TNF-alpha effects in the brain, we investigated the behaviour of 6-month-old TNF-alpha knockout mice and their neurobiological correlates. 6-month-old TNF(-/-), TNF-R1(-/-) and TNF-R2(-/-) mice were compared to age-matched WT mice and tested for various behaviours. ELISA hippocampal levels of nerve growth factor (NGF) and brain derived neurotrophic factor (BDNF) and qPCR mRNA levels of Tnfa, Tnfr1, Tnfr2, Il10 and Il1beta were measured. TNF-R1(-/-) and TNF(-/-) mice were found to have lesser exploratory behaviour than WT mice, while TNF-R1(-/-) mice displayed better memory than WT and TNF-R2(-/-) mice. Both TNF(-/-) and TNF-R2(-/-) mice exhibited significantly lower immobility on the depression test than WT mice. Additionally, TNF(-/-) mice expressed significantly lower levels of BDNF than WT mice in the hippocampus while TNF-R1(-/-) mice displayed significantly lower BDNF levels compared to both WT and TNF-R2(-/-) mice. TNF-R2(-/-) mice also displayed significantly higher levels of NGF compared to TNF-R1(-/-) mice. These results illustrate that TNF-alpha and its receptors mediate several behavioural phenotypes. Finally, BDNF and NGF levels appear to be regulated by TNF-alpha and its receptors even under immunologically unchallenged conditions. CI - Copyright (c) 2015 Elsevier B.V. All rights reserved. FAU - Camara, Marie Lou AU - Camara ML AD - Discipline of Psychiatry, School of Medicine, University of Adelaide, Adelaide, SA, Australia; Discipline of Anatomy, School of Medicine, James Cook University, Townsville QLD, Australia. FAU - Corrigan, Frances AU - Corrigan F AD - Discipline of Anatomy and Pathology, School of Medical Sciences, University of Adelaide, SA, Australia. FAU - Jaehne, Emily J AU - Jaehne EJ AD - Discipline of Psychiatry, School of Medicine, University of Adelaide, Adelaide, SA, Australia. FAU - Jawahar, M Catharine AU - Jawahar MC AD - Discipline of Psychiatry, School of Medicine, University of Adelaide, Adelaide, SA, Australia. FAU - Anscomb, Helen AU - Anscomb H AD - Discipline of Anatomy, School of Medicine, James Cook University, Townsville QLD, Australia. FAU - Baune, Bernhard T AU - Baune BT AD - Discipline of Psychiatry, School of Medicine, University of Adelaide, Adelaide, SA, Australia. Electronic address: Bernhard.Baune@Adelaide.edu.au. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150428 PL - Netherlands TA - Behav Brain Res JT - Behavioural brain research JID - 8004872 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Nerve Growth Factors) RN - 0 (Receptors, Tumor Necrosis Factor, Type I) RN - 0 (Receptors, Tumor Necrosis Factor, Type II) RN - 0 (Tumor Necrosis Factor-alpha) SB - IM MH - Age Factors MH - Animals MH - Behavior, Animal/*physiology MH - Brain-Derived Neurotrophic Factor/*metabolism MH - Depression/*metabolism MH - Exploratory Behavior/*physiology MH - Hippocampus/*metabolism MH - Humans MH - Male MH - Memory/*physiology MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Nerve Growth Factors/*metabolism MH - Receptors, Tumor Necrosis Factor, Type I/*physiology MH - Receptors, Tumor Necrosis Factor, Type II/metabolism MH - Tumor Necrosis Factor-alpha/*physiology OTO - NOTNLM OT - Cognition OT - Depression OT - Neurotrophins OT - TNF-alpha OT - TNF-alpha receptor EDAT- 2015/05/03 06:00 MHDA- 2016/04/05 06:00 CRDT- 2015/05/03 06:00 PHST- 2015/01/27 00:00 [received] PHST- 2015/04/21 00:00 [revised] PHST- 2015/04/23 00:00 [accepted] PHST- 2015/05/03 06:00 [entrez] PHST- 2015/05/03 06:00 [pubmed] PHST- 2016/04/05 06:00 [medline] AID - S0166-4328(15)00295-8 [pii] AID - 10.1016/j.bbr.2015.04.040 [doi] PST - ppublish SO - Behav Brain Res. 2015 Sep 1;290:51-60. doi: 10.1016/j.bbr.2015.04.040. Epub 2015 Apr 28.