Lipopolysaccharide (LPS) might affect the central nervous system by causing neuroinflammation, which subsequently leads to brain damage and dysfunction. In this study, we evaluated the role of nod-like receptor pyrin domain-containing protein 3 (NLRP3) inflammasome activation in long-term behavioral alterations of 8-week-old male C57BL/6 mice injected intraperitoneally with LPS (5mg/kg). At different time points after injection, we assessed locomotor function with a 24-point neurologic deficit scoring system and the rotarod test; assessed recognition memory with the novel object recognition test; and assessed emotional abnormality (anhedonia and behavioral despair) with the tail suspension test, forced swim test, and sucrose preference test. We also assessed protein expression of NLRP3, apoptosis-associated speck-like protein (ASC), and caspase-1 p10 in hippocampus by Western blotting; measured levels of interleukin (IL)-1β, IL-18, tumor necrosis factor α (TNFα), and IL-10 in hippocampus; measured TNFα and IL-1β in serum by ELISA; and evaluated microglial activity in hippocampus by Iba1 immunofluorescence. We found that LPS-injected mice displayed long-term depression-like behaviors and recognition memory deficit; elevated expression of NLRP3, ASC, and caspase-1 p10; increased levels of IL-1β, IL-18, and TNFα; decreased levels of IL-10; and increased microglial activation. These effects were blocked by the NLRP3 inflammasome inhibitor Ac-Tyr-Val-Ala-Asp-chloromethylketone. The results demonstrate proof of concept that NLRP3 inflammasome activation contributes to long-term behavioral alterations in LPS-exposed mice, probably through enhanced inflammation, and that NLRP3 inflammasome inhibition might alleviate peripheral and brain inflammation and thereby ameliorate long-term behavioral alterations in LPS-exposed mice.
Brain Behav Immun. 2014 Oct;41:90-100
[PMID:
24859041]
Brain. 2005 Jul;128(Pt 7):1622-33
[PMID:
15800021]
Ann Clin Transl Neurol. 2014 Apr 1;1(4):258-271
[PMID:
24741667]
CNS Neurosci Ther. 2014 Mar;20(3):294-5
[PMID:
24479787]
Mol Neurobiol. 2016 Sep;53(7):4809-20
[PMID:
26334614]
CNS Neurosci Ther. 2015 Nov;21(11):905-13
[PMID:
26494128]
Behav Brain Res. 2016 Jan 1;296:318-325
[PMID:
26416673]
Gastroenterology. 2011 Dec;141(6):1986-99
[PMID:
22005480]
Sci Rep. 2016 Jun 08;6:27711
[PMID:
27270556]
Behav Brain Res. 2016 Jul 1;307:18-24
[PMID:
27036651]
Brain Behav Immun. 2014 Feb;36:111-7
[PMID:
24513871]
J Neuroinflammation. 2011 Mar 08;8:22
[PMID:
21385433]
Mol Neurobiol. 2016 Nov;53(9):5928-5934
[PMID:
26510743]
Brain Behav Immun. 2016 May;54:140-148
[PMID:
26812118]
Br J Pharmacol. 2000 Oct;131(3):383-6
[PMID:
11015286]
Neurosci Lett. 2016 Aug 26;629:256-261
[PMID:
27276653]
Sci Rep. 2016 Apr 07;6:24166
[PMID:
27053298]
Reproduction. 2015 Aug;150(2):105-14
[PMID:
25934945]
Cell. 2010 Mar 19;140(6):821-32
[PMID:
20303873]
Mol Neurobiol. 2016 Sep;53(7):4874-82
[PMID:
26362308]
Mediators Inflamm. 2016;2016:1045657
[PMID:
26924896]
Metab Brain Dis. 2015 Jun;30(3):669-78
[PMID:
25148914]
Acta Pharmacol Sin. 2015 Aug;36(8):939-48
[PMID:
26119880]
Mol Immunol. 2015 Aug;66(2):253-62
[PMID:
25863775]
Behav Brain Res. 2006 Nov 25;175(1):43-50
[PMID:
17023061]
Biol Psychiatry. 2009 May 1;65(9):732-41
[PMID:
19150053]
Neuroscience. 2011 Jul 28;187:63-9
[PMID:
21571042]
Pharmacol Biochem Behav. 2001 Oct-Nov;70(2-3):187-92
[PMID:
11701187]
CNS Neurol Disord Drug Targets. 2013 Sep;12(6):720-5
[PMID:
24047519]
Physiol Rev. 1991 Jan;71(1):93-127
[PMID:
1986393]
Brain Behav Immun. 2015 Jan;43:98-109
[PMID:
25063709]
Front Pharmacol. 2015 Nov 05;6:262
[PMID:
26594174]
Neuropharmacology. 2002 Dec;43(8):1339-50
[PMID:
12527484]
Brain Behav Immun. 2015 May;46:293-310
[PMID:
25697396]
Nat Protoc. 2006;1(3):1306-11
[PMID:
17406415]
J Cereb Blood Flow Metab. 2011 May;31(5):1243-50
[PMID:
21102602]
Behav Neurosci. 2003 Apr;117(2):327-40
[PMID:
12708529]
Trends Neurosci. 2015 Oct;38(10):637-658
[PMID:
26442697]
J Inflamm Res. 2015 Jan 16;8:15-27
[PMID:
25653548]
J Psychiatr Res. 2013 May;47(5):611-6
[PMID:
23394815]
J Neurochem. 2004 Feb;88(3):635-46
[PMID:
14720213]
Transl Stroke Res. 2010 Mar 1;1(1):57-64
[PMID:
20596246]
J Vis Exp. 2012 Jan 29;(59):e3638
[PMID:
22314943]
J Psychopharmacol. 2009 May;23(3):295-304
[PMID:
18562439]
Front Behav Neurosci. 2013 Oct 24;7:152
[PMID:
24187535]
Biol Psychiatry. 2010 Mar 1;67(5):446-57
[PMID:
20015486]
Am J Geriatr Psychiatry. 2013 Sep;21(9):887-97
[PMID:
23567391]
Mol Psychiatry. 2014 Jun;19(6):699-709
[PMID:
24342992]
Neurobiol Aging. 2015 Mar;36(3):1439-50
[PMID:
25623334]
CNS Neurosci Ther. 2014 Feb;20(2):119-24
[PMID:
24279434]
Prog Neuropsychopharmacol Biol Psychiatry. 2004 Dec;28(8):1255-9
[PMID:
15588751]
Prog Neuropsychopharmacol Biol Psychiatry. 2011 Apr 29;35(3):664-75
[PMID:
20599581]
PLoS One. 2015 Jul 02;10(7):e0131645
[PMID:
26135738]
Cell Death Differ. 2003 Aug;10(8):881-8
[PMID:
12867995]
J Neurosci. 2005 Sep 7;25(36):8165-72
[PMID:
16148224]
Physiol Behav. 2013 Jul 2;119:145-8
[PMID:
23769689]
PLoS One. 2014 May 15;9(5):e97423
[PMID:
24831292]
Mol Neurobiol. 2017 Nov;54(9):7327-7334
[PMID:
27815837]
Int J Clin Exp Med. 2015 Apr 15;8(4):4787-94
[PMID:
26131053]
Amino Acid Chloromethyl Ketones
Anti-Inflammatory Agents
Inflammasomes
Lipopolysaccharides
N-acetyl-tyrosyl-valyl-alanyl-aspartyl chloromethyl ketone
NLR Family, Pyrin Domain-Containing 3 Protein
Nlrp3 protein, mouse