Identifying early inflammatory changes in monocyte-derived macrophages from a population with IQ-discrepant episodic memory.

<h4>Background</h4>Cells of the innate immune system including monocytes and macrophages are the first line of defence against infections and are critical regulators of the inflammatory response. These cells express toll-like receptors (TLRs), innate immune receptors which govern tailore...

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Autores principales: Eric J Downer, Raasay S Jones, Claire L McDonald, Eleonora Greco, Sabina Brennan, Thomas J Connor, Ian H Robertson, Marina A Lynch
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Publicado: Public Library of Science (PLoS) 2013
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spelling oai:doaj.org-article:9e38fa3a402544f0b9ce616e6b518ad62021-11-18T07:46:47ZIdentifying early inflammatory changes in monocyte-derived macrophages from a population with IQ-discrepant episodic memory.1932-620310.1371/journal.pone.0063194https://doaj.org/article/9e38fa3a402544f0b9ce616e6b518ad62013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23671673/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>Cells of the innate immune system including monocytes and macrophages are the first line of defence against infections and are critical regulators of the inflammatory response. These cells express toll-like receptors (TLRs), innate immune receptors which govern tailored inflammatory gene expression patterns. Monocytes, which produce pro-inflammatory mediators, are readily recruited to the central nervous system (CNS) in neurodegenerative diseases.<h4>Methods</h4>This study explored the expression of receptors (CD11b, TLR2 and TLR4) on circulating monocyte-derived macrophages (MDMs) and peripheral blood mononuclear cells (PBMCs) isolated from healthy elderly adults who we classified as either IQ memory-consistent (high-performing, HP) or IQ memory-discrepant (low-performing, LP).<h4>Results</h4>The expression of CD11b, TLR4 and TLR2 was increased in MDMs from the LP group when compared to HP cohort. MDMs from both groups responded robustly to treatment with the TLR4 activator, lipopolysaccharide (LPS), in terms of cytokine production. Significantly, MDMs from the LP group displayed hypersensitivity to LPS exposure.<h4>Interpretation</h4>Overall these findings define differential receptor expression and cytokine profiles that occur in MDMs derived from a cohort of IQ memory-discrepant individuals. These changes are indicative of inflammation and may be involved in the prodromal processes leading to the development of neurodegenerative disease.Eric J DownerRaasay S JonesClaire L McDonaldEleonora GrecoSabina BrennanThomas J ConnorIan H RobertsonMarina A LynchPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 5, p e63194 (2013)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Eric J Downer
Raasay S Jones
Claire L McDonald
Eleonora Greco
Sabina Brennan
Thomas J Connor
Ian H Robertson
Marina A Lynch
Identifying early inflammatory changes in monocyte-derived macrophages from a population with IQ-discrepant episodic memory.
description <h4>Background</h4>Cells of the innate immune system including monocytes and macrophages are the first line of defence against infections and are critical regulators of the inflammatory response. These cells express toll-like receptors (TLRs), innate immune receptors which govern tailored inflammatory gene expression patterns. Monocytes, which produce pro-inflammatory mediators, are readily recruited to the central nervous system (CNS) in neurodegenerative diseases.<h4>Methods</h4>This study explored the expression of receptors (CD11b, TLR2 and TLR4) on circulating monocyte-derived macrophages (MDMs) and peripheral blood mononuclear cells (PBMCs) isolated from healthy elderly adults who we classified as either IQ memory-consistent (high-performing, HP) or IQ memory-discrepant (low-performing, LP).<h4>Results</h4>The expression of CD11b, TLR4 and TLR2 was increased in MDMs from the LP group when compared to HP cohort. MDMs from both groups responded robustly to treatment with the TLR4 activator, lipopolysaccharide (LPS), in terms of cytokine production. Significantly, MDMs from the LP group displayed hypersensitivity to LPS exposure.<h4>Interpretation</h4>Overall these findings define differential receptor expression and cytokine profiles that occur in MDMs derived from a cohort of IQ memory-discrepant individuals. These changes are indicative of inflammation and may be involved in the prodromal processes leading to the development of neurodegenerative disease.
format article
author Eric J Downer
Raasay S Jones
Claire L McDonald
Eleonora Greco
Sabina Brennan
Thomas J Connor
Ian H Robertson
Marina A Lynch
author_facet Eric J Downer
Raasay S Jones
Claire L McDonald
Eleonora Greco
Sabina Brennan
Thomas J Connor
Ian H Robertson
Marina A Lynch
author_sort Eric J Downer
title Identifying early inflammatory changes in monocyte-derived macrophages from a population with IQ-discrepant episodic memory.
title_short Identifying early inflammatory changes in monocyte-derived macrophages from a population with IQ-discrepant episodic memory.
title_full Identifying early inflammatory changes in monocyte-derived macrophages from a population with IQ-discrepant episodic memory.
title_fullStr Identifying early inflammatory changes in monocyte-derived macrophages from a population with IQ-discrepant episodic memory.
title_full_unstemmed Identifying early inflammatory changes in monocyte-derived macrophages from a population with IQ-discrepant episodic memory.
title_sort identifying early inflammatory changes in monocyte-derived macrophages from a population with iq-discrepant episodic memory.
publisher Public Library of Science (PLoS)
publishDate 2013
url https://doaj.org/article/9e38fa3a402544f0b9ce616e6b518ad6
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