PMID- 29153599 OWN - NLM STAT- MEDLINE DCOM- 20171129 LR - 20190127 IS - 1872-8421 (Electronic) IS - 0165-5728 (Print) IS - 0165-5728 (Linking) VI - 313 DP - 2017 Dec 15 TI - LPS-induced cortical kynurenic acid and neurogranin-NFAT signaling is associated with deficits in stimulus processing during Pavlovian conditioning. PG - 1-9 LID - S0165-5728(16)30465-9 [pii] LID - 10.1016/j.jneuroim.2017.09.010 [doi] AB - The N-Methyl-d-Aspartate receptor (NMDAR) antagonist kynurenic acid (KYNA) and the post-synaptic calmodulin binding protein neurogranin (Nrgn) have been implicated in neurological and neuropsychiatric conditions including Alzheimer's disease and schizophrenia. This study indicates that systemic dual-lipopolysaccharide (LPS) injections increases KYNA in the medial prefrontal cortex (mPFC), which is accompanied with increased phosphorylation of nuclear factor kappa chain of activated B cells (NFkappaB) and activation of the nuclear factor of activated T- cells (NFAT). Our results also indicate that dual-LPS increases Nrgn phosphorylation and concomitantly reduces phosphorylation of calmodulin kinase-II (CaMKII). We confirmed that systemic blockade of kynurenine-3 monooxygenase in conjunction with kynurenine administration results in significant increases in Nrgn phosphorylation and a significant reduction of CaMKII phosphorylation in the mPFC. Consequently, dual-LPS administration induced significant impairments in stimulus processing during Pavlovian conditioning. Taken together, our study indicates that elevations in KYNA in the mPFC can directly regulate NMDA-Nrgn-CaMKII signaling, suggesting that neuroinflammatory conditions affecting this pathway may be associated with cognitive dysfunction. CI - Copyright (c) 2017 Elsevier B.V. All rights reserved. FAU - Oliveros, A AU - Oliveros A AD - Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic College of Medicine, Rochester, MN 55905, USA. FAU - Wininger, K AU - Wininger K AD - Neurobiology of Disease Program, Mayo Clinic College of Medicine, Rochester, MN 55905, USA. FAU - Sens, J AU - Sens J AD - Neurobiology of Disease Program, Mayo Clinic College of Medicine, Rochester, MN 55905, USA. FAU - Larsson, M K AU - Larsson MK AD - Department of Physiology and Pharmacology, Karolinska Institute, Stockholm, Sweden. FAU - Liu, X C AU - Liu XC AD - Department of Physiology and Pharmacology, Karolinska Institute, Stockholm, Sweden. FAU - Choi, S AU - Choi S AD - Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic College of Medicine, Rochester, MN 55905, USA. FAU - Faka, A AU - Faka A AD - Department of Physiology and Pharmacology, Karolinska Institute, Stockholm, Sweden. FAU - Schwieler, L AU - Schwieler L AD - Department of Physiology and Pharmacology, Karolinska Institute, Stockholm, Sweden. FAU - Engberg, G AU - Engberg G AD - Department of Physiology and Pharmacology, Karolinska Institute, Stockholm, Sweden. FAU - Erhardt, S AU - Erhardt S AD - Department of Physiology and Pharmacology, Karolinska Institute, Stockholm, Sweden. FAU - Choi, D S AU - Choi DS AD - Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic College of Medicine, Rochester, MN 55905, USA; Department of Psychiatry and Psychology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA; Neurobiology of Disease Program, Mayo Clinic College of Medicine, Rochester, MN 55905, USA. Electronic address: choids@mayo.edu. LA - eng GR - R01 AA018779/AA/NIAAA NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20170928 PL - Netherlands TA - J Neuroimmunol JT - Journal of neuroimmunology JID - 8109498 RN - 0 (Lipopolysaccharides) RN - 0 (NFATC Transcription Factors) RN - 0 (Receptors, N-Methyl-D-Aspartate) RN - 132654-77-4 (Neurogranin) RN - EC 2.7.11.17 (Calcium-Calmodulin-Dependent Protein Kinase Type 2) RN - H030S2S85J (Kynurenic Acid) SB - IM MH - Analysis of Variance MH - Animals MH - Calcium-Calmodulin-Dependent Protein Kinase Type 2/metabolism MH - Conditioning, Classical MH - Hippocampus/drug effects/metabolism MH - Kynurenic Acid/*metabolism MH - Lipopolysaccharides/*toxicity MH - Male MH - Mice MH - Mice, Inbred C57BL MH - NFATC Transcription Factors/metabolism MH - Neurogranin/*metabolism MH - Prefrontal Cortex/*drug effects MH - Prepulse Inhibition/drug effects MH - Receptors, N-Methyl-D-Aspartate/*metabolism MH - Rotarod Performance Test MH - Signal Transduction/*drug effects MH - Synaptosomes/drug effects PMC - PMC5728408 MID - NIHMS912907 OTO - NOTNLM OT - Kynurenic-acid OT - Lipopolysaccharide OT - Medial-prefrontal cortex OT - NFAT OT - Neurogranin OT - Ventral-hippocampus EDAT- 2017/11/21 06:00 MHDA- 2017/12/01 06:00 PMCR- 2018/12/15 CRDT- 2017/11/21 06:00 PHST- 2016/12/15 00:00 [received] PHST- 2017/05/04 00:00 [revised] PHST- 2017/09/27 00:00 [accepted] PHST- 2017/11/21 06:00 [entrez] PHST- 2017/11/21 06:00 [pubmed] PHST- 2017/12/01 06:00 [medline] PHST- 2018/12/15 00:00 [pmc-release] AID - S0165-5728(16)30465-9 [pii] AID - 10.1016/j.jneuroim.2017.09.010 [doi] PST - ppublish SO - J Neuroimmunol. 2017 Dec 15;313:1-9. doi: 10.1016/j.jneuroim.2017.09.010. Epub 2017 Sep 28.