Serotonergic neurotransmission mediated cognitive dysfunction in two mouse models of sepsis‐associated encephalopathy

Background Patients with sepsis‐associated encephalopathy (SAE) often exhibit cognitive impairments. Despite this, the underlying mechanisms of SAE remain largely unexplored. Here, we explored the role of serotonergic neurotransmission in cognitive dysfunction of two mouse models of SAE. Methods The...

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Veröffentlicht in:CNS neuroscience & therapeutics 2024-03, Vol.30 (3), p.e14655-n/a
Hauptverfasser: Zhang, Chen, Tian, Fafa, Peng, Jing, Wang, Xia, Li, Jingchen, Zhang, Lina, Tan, Zheren
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container_issue 3
container_start_page e14655
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creator Zhang, Chen
Tian, Fafa
Peng, Jing
Wang, Xia
Li, Jingchen
Zhang, Lina
Tan, Zheren
description Background Patients with sepsis‐associated encephalopathy (SAE) often exhibit cognitive impairments. Despite this, the underlying mechanisms of SAE remain largely unexplored. Here, we explored the role of serotonergic neurotransmission in cognitive dysfunction of two mouse models of SAE. Methods The mouse models of SAE were established by injection of lipopolysaccharide (LPS, 10 mg/kg, intraperitoneal) and cecal ligation puncture (CLP) respectively. Barnes maze, new object recognition test and open field test were used to evaluate the effects of fluoxetine (selective serotonin reuptake inhibitor) and cyproheptadine (nonselective 5‐HT2 receptor antagonist) on cognition and motor activity of mice. Additionally, WAY100635 (5‐HT1A receptor antagonist) was co‐administered with fluoxetine to explore the mechanism underlying effect of fluoxetine on cognitive impairments of SAE. Enzyme‐linked immunosorbent assay (ELISA) was performed to determine 5‐HT levels in hippocampus, brainstem and frontal lobe of experimental groups. Results Both LPS‐induced sepsis and CLP induced sepsis resulted in a notable learning deficit. Fluoxetine ameliorated, while cyproheptadine aggravated, cognitive impairment in two classic mouse models of SAE. The cognition‐enhancing effect of fluoxetine is reversed by WAY100635. Decreased 5‐HT levels in hippocampus, brainstem and frontal lobe were observed in LPS septic model and CLP septic model. Notably, both fluoxetine and cyproheptadine significantly increased 5‐HT levels in those brain regions in LPS septic model. Additionally, fluoxetine significantly increased 5‐HT levels in frontal lobe of CLP septic model. Conclusions Our study demonstrated that serotonergic neurotransmission plays a significant role in mechanisms underlying cognitive impairment in SAE. These findings contribute to identification of novel targets to prevent and arrest cognitive impairment in SAE. Septic mice exhibited cognitive dysfunction and decreased 5‐HT in brain region associated with cognition, and cognitive performance was mediated by SSRI and 5‐HT receptor antagonist. Serotonergic neurotransmission plays a significant role in mechanisms underlying cognitive impairment in SAE.
doi_str_mv 10.1111/cns.14655
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Despite this, the underlying mechanisms of SAE remain largely unexplored. Here, we explored the role of serotonergic neurotransmission in cognitive dysfunction of two mouse models of SAE. Methods The mouse models of SAE were established by injection of lipopolysaccharide (LPS, 10 mg/kg, intraperitoneal) and cecal ligation puncture (CLP) respectively. Barnes maze, new object recognition test and open field test were used to evaluate the effects of fluoxetine (selective serotonin reuptake inhibitor) and cyproheptadine (nonselective 5‐HT2 receptor antagonist) on cognition and motor activity of mice. Additionally, WAY100635 (5‐HT1A receptor antagonist) was co‐administered with fluoxetine to explore the mechanism underlying effect of fluoxetine on cognitive impairments of SAE. Enzyme‐linked immunosorbent assay (ELISA) was performed to determine 5‐HT levels in hippocampus, brainstem and frontal lobe of experimental groups. Results Both LPS‐induced sepsis and CLP induced sepsis resulted in a notable learning deficit. Fluoxetine ameliorated, while cyproheptadine aggravated, cognitive impairment in two classic mouse models of SAE. The cognition‐enhancing effect of fluoxetine is reversed by WAY100635. Decreased 5‐HT levels in hippocampus, brainstem and frontal lobe were observed in LPS septic model and CLP septic model. Notably, both fluoxetine and cyproheptadine significantly increased 5‐HT levels in those brain regions in LPS septic model. Additionally, fluoxetine significantly increased 5‐HT levels in frontal lobe of CLP septic model. Conclusions Our study demonstrated that serotonergic neurotransmission plays a significant role in mechanisms underlying cognitive impairment in SAE. These findings contribute to identification of novel targets to prevent and arrest cognitive impairment in SAE. Septic mice exhibited cognitive dysfunction and decreased 5‐HT in brain region associated with cognition, and cognitive performance was mediated by SSRI and 5‐HT receptor antagonist. Serotonergic neurotransmission plays a significant role in mechanisms underlying cognitive impairment in SAE.</description><identifier>ISSN: 1755-5930</identifier><identifier>EISSN: 1755-5949</identifier><identifier>DOI: 10.1111/cns.14655</identifier><identifier>PMID: 38433019</identifier><language>eng</language><publisher>England: John Wiley &amp; Sons, Inc</publisher><subject>Abdomen ; Analysis ; Animal cognition ; Animal models ; Animals ; Brain stem ; Cecum ; Cognition ; Cognition disorders ; Cognitive ability ; cognitive dysfunction ; Cognitive Dysfunction - drug therapy ; Cognitive Dysfunction - etiology ; Cyproheptadine ; Cyproheptadine - pharmacology ; Cyproheptadine - therapeutic use ; Disease Models, Animal ; Encephalopathy ; Enzyme-linked immunosorbent assay ; Enzymes ; Fluoxetine ; Fluoxetine - pharmacology ; Fluoxetine - therapeutic use ; Frontal lobe ; Hippocampus ; Humans ; Infection ; Laboratory animals ; Lipopolysaccharides ; Lipopolysaccharides - toxicity ; Medical prognosis ; Memory ; Mice ; Motor activity ; Neurotransmission ; Open-field behavior ; Original ; Pattern recognition ; Sepsis ; Sepsis - complications ; Sepsis-Associated Encephalopathy - complications ; sepsis‐associated encephalopathy ; serotonergic neurotransmission ; Serotonin ; Serotonin S1 receptors ; Serotonin S2 receptors ; Serotonin uptake inhibitors ; therapeutics</subject><ispartof>CNS neuroscience &amp; therapeutics, 2024-03, Vol.30 (3), p.e14655-n/a</ispartof><rights>2024 The Authors. published by John Wiley &amp; Sons Ltd.</rights><rights>2024 The Authors. CNS Neuroscience &amp; Therapeutics published by John Wiley &amp; Sons Ltd.</rights><rights>COPYRIGHT 2024 John Wiley &amp; Sons, Inc.</rights><rights>2024. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c4715-97231b27fd91fbd89e74806e52e0c53db46e68807931fefba364c834c335a0193</cites><orcidid>0000-0002-3758-7824</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC10909618/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC10909618/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,727,780,784,864,885,1417,11562,27924,27925,45574,45575,46052,46476,53791,53793</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/38433019$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Zhang, Chen</creatorcontrib><creatorcontrib>Tian, Fafa</creatorcontrib><creatorcontrib>Peng, Jing</creatorcontrib><creatorcontrib>Wang, Xia</creatorcontrib><creatorcontrib>Li, Jingchen</creatorcontrib><creatorcontrib>Zhang, Lina</creatorcontrib><creatorcontrib>Tan, Zheren</creatorcontrib><title>Serotonergic neurotransmission mediated cognitive dysfunction in two mouse models of sepsis‐associated encephalopathy</title><title>CNS neuroscience &amp; therapeutics</title><addtitle>CNS Neurosci Ther</addtitle><description>Background Patients with sepsis‐associated encephalopathy (SAE) often exhibit cognitive impairments. Despite this, the underlying mechanisms of SAE remain largely unexplored. Here, we explored the role of serotonergic neurotransmission in cognitive dysfunction of two mouse models of SAE. Methods The mouse models of SAE were established by injection of lipopolysaccharide (LPS, 10 mg/kg, intraperitoneal) and cecal ligation puncture (CLP) respectively. Barnes maze, new object recognition test and open field test were used to evaluate the effects of fluoxetine (selective serotonin reuptake inhibitor) and cyproheptadine (nonselective 5‐HT2 receptor antagonist) on cognition and motor activity of mice. Additionally, WAY100635 (5‐HT1A receptor antagonist) was co‐administered with fluoxetine to explore the mechanism underlying effect of fluoxetine on cognitive impairments of SAE. Enzyme‐linked immunosorbent assay (ELISA) was performed to determine 5‐HT levels in hippocampus, brainstem and frontal lobe of experimental groups. Results Both LPS‐induced sepsis and CLP induced sepsis resulted in a notable learning deficit. Fluoxetine ameliorated, while cyproheptadine aggravated, cognitive impairment in two classic mouse models of SAE. The cognition‐enhancing effect of fluoxetine is reversed by WAY100635. Decreased 5‐HT levels in hippocampus, brainstem and frontal lobe were observed in LPS septic model and CLP septic model. Notably, both fluoxetine and cyproheptadine significantly increased 5‐HT levels in those brain regions in LPS septic model. Additionally, fluoxetine significantly increased 5‐HT levels in frontal lobe of CLP septic model. Conclusions Our study demonstrated that serotonergic neurotransmission plays a significant role in mechanisms underlying cognitive impairment in SAE. These findings contribute to identification of novel targets to prevent and arrest cognitive impairment in SAE. Septic mice exhibited cognitive dysfunction and decreased 5‐HT in brain region associated with cognition, and cognitive performance was mediated by SSRI and 5‐HT receptor antagonist. 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Tian, Fafa ; Peng, Jing ; Wang, Xia ; Li, Jingchen ; Zhang, Lina ; Tan, Zheren</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4715-97231b27fd91fbd89e74806e52e0c53db46e68807931fefba364c834c335a0193</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Abdomen</topic><topic>Analysis</topic><topic>Animal cognition</topic><topic>Animal models</topic><topic>Animals</topic><topic>Brain stem</topic><topic>Cecum</topic><topic>Cognition</topic><topic>Cognition disorders</topic><topic>Cognitive ability</topic><topic>cognitive dysfunction</topic><topic>Cognitive Dysfunction - drug therapy</topic><topic>Cognitive Dysfunction - etiology</topic><topic>Cyproheptadine</topic><topic>Cyproheptadine - pharmacology</topic><topic>Cyproheptadine - therapeutic use</topic><topic>Disease Models, Animal</topic><topic>Encephalopathy</topic><topic>Enzyme-linked immunosorbent assay</topic><topic>Enzymes</topic><topic>Fluoxetine</topic><topic>Fluoxetine - pharmacology</topic><topic>Fluoxetine - therapeutic use</topic><topic>Frontal lobe</topic><topic>Hippocampus</topic><topic>Humans</topic><topic>Infection</topic><topic>Laboratory animals</topic><topic>Lipopolysaccharides</topic><topic>Lipopolysaccharides - toxicity</topic><topic>Medical prognosis</topic><topic>Memory</topic><topic>Mice</topic><topic>Motor activity</topic><topic>Neurotransmission</topic><topic>Open-field behavior</topic><topic>Original</topic><topic>Pattern recognition</topic><topic>Sepsis</topic><topic>Sepsis - complications</topic><topic>Sepsis-Associated Encephalopathy - complications</topic><topic>sepsis‐associated encephalopathy</topic><topic>serotonergic neurotransmission</topic><topic>Serotonin</topic><topic>Serotonin S1 receptors</topic><topic>Serotonin S2 receptors</topic><topic>Serotonin uptake inhibitors</topic><topic>therapeutics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhang, Chen</creatorcontrib><creatorcontrib>Tian, Fafa</creatorcontrib><creatorcontrib>Peng, Jing</creatorcontrib><creatorcontrib>Wang, Xia</creatorcontrib><creatorcontrib>Li, Jingchen</creatorcontrib><creatorcontrib>Zhang, Lina</creatorcontrib><creatorcontrib>Tan, Zheren</creatorcontrib><collection>Wiley-Blackwell Open Access Titles</collection><collection>Wiley Free Content</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Gale Academic OneFile</collection><collection>ProQuest Central (Corporate)</collection><collection>Neurosciences Abstracts</collection><collection>Health &amp; 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Medical Complete (Alumni)</collection><collection>ProQuest Biological Science Collection</collection><collection>Health &amp; Medical Collection (Alumni Edition)</collection><collection>Biological Science Database</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>CNS neuroscience &amp; therapeutics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhang, Chen</au><au>Tian, Fafa</au><au>Peng, Jing</au><au>Wang, Xia</au><au>Li, Jingchen</au><au>Zhang, Lina</au><au>Tan, Zheren</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Serotonergic neurotransmission mediated cognitive dysfunction in two mouse models of sepsis‐associated encephalopathy</atitle><jtitle>CNS neuroscience &amp; therapeutics</jtitle><addtitle>CNS Neurosci Ther</addtitle><date>2024-03</date><risdate>2024</risdate><volume>30</volume><issue>3</issue><spage>e14655</spage><epage>n/a</epage><pages>e14655-n/a</pages><issn>1755-5930</issn><eissn>1755-5949</eissn><abstract>Background Patients with sepsis‐associated encephalopathy (SAE) often exhibit cognitive impairments. Despite this, the underlying mechanisms of SAE remain largely unexplored. Here, we explored the role of serotonergic neurotransmission in cognitive dysfunction of two mouse models of SAE. Methods The mouse models of SAE were established by injection of lipopolysaccharide (LPS, 10 mg/kg, intraperitoneal) and cecal ligation puncture (CLP) respectively. Barnes maze, new object recognition test and open field test were used to evaluate the effects of fluoxetine (selective serotonin reuptake inhibitor) and cyproheptadine (nonselective 5‐HT2 receptor antagonist) on cognition and motor activity of mice. Additionally, WAY100635 (5‐HT1A receptor antagonist) was co‐administered with fluoxetine to explore the mechanism underlying effect of fluoxetine on cognitive impairments of SAE. Enzyme‐linked immunosorbent assay (ELISA) was performed to determine 5‐HT levels in hippocampus, brainstem and frontal lobe of experimental groups. Results Both LPS‐induced sepsis and CLP induced sepsis resulted in a notable learning deficit. Fluoxetine ameliorated, while cyproheptadine aggravated, cognitive impairment in two classic mouse models of SAE. The cognition‐enhancing effect of fluoxetine is reversed by WAY100635. Decreased 5‐HT levels in hippocampus, brainstem and frontal lobe were observed in LPS septic model and CLP septic model. Notably, both fluoxetine and cyproheptadine significantly increased 5‐HT levels in those brain regions in LPS septic model. Additionally, fluoxetine significantly increased 5‐HT levels in frontal lobe of CLP septic model. Conclusions Our study demonstrated that serotonergic neurotransmission plays a significant role in mechanisms underlying cognitive impairment in SAE. These findings contribute to identification of novel targets to prevent and arrest cognitive impairment in SAE. Septic mice exhibited cognitive dysfunction and decreased 5‐HT in brain region associated with cognition, and cognitive performance was mediated by SSRI and 5‐HT receptor antagonist. Serotonergic neurotransmission plays a significant role in mechanisms underlying cognitive impairment in SAE.</abstract><cop>England</cop><pub>John Wiley &amp; Sons, Inc</pub><pmid>38433019</pmid><doi>10.1111/cns.14655</doi><tpages>11</tpages><orcidid>https://orcid.org/0000-0002-3758-7824</orcidid><oa>free_for_read</oa></addata></record>
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subjects Abdomen
Analysis
Animal cognition
Animal models
Animals
Brain stem
Cecum
Cognition
Cognition disorders
Cognitive ability
cognitive dysfunction
Cognitive Dysfunction - drug therapy
Cognitive Dysfunction - etiology
Cyproheptadine
Cyproheptadine - pharmacology
Cyproheptadine - therapeutic use
Disease Models, Animal
Encephalopathy
Enzyme-linked immunosorbent assay
Enzymes
Fluoxetine
Fluoxetine - pharmacology
Fluoxetine - therapeutic use
Frontal lobe
Hippocampus
Humans
Infection
Laboratory animals
Lipopolysaccharides
Lipopolysaccharides - toxicity
Medical prognosis
Memory
Mice
Motor activity
Neurotransmission
Open-field behavior
Original
Pattern recognition
Sepsis
Sepsis - complications
Sepsis-Associated Encephalopathy - complications
sepsis‐associated encephalopathy
serotonergic neurotransmission
Serotonin
Serotonin S1 receptors
Serotonin S2 receptors
Serotonin uptake inhibitors
therapeutics
title Serotonergic neurotransmission mediated cognitive dysfunction in two mouse models of sepsis‐associated encephalopathy
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