Nociceptor–Macrophage Interactions in Apical Periodontitis: How Biomolecules Link Inflammation with Pain

Periradicular tissues have a rich supply of peripheral afferent neurons, also known as nociceptive neurons, originating from the trigeminal nerve. While their primary function is to relay pain signals to the brain, these are known to be involved in modulating innate and adaptive immunity by initiati...

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Main Authors: Nandita Menon, Anil Kishen
Format: Article
Language:English
Published: MDPI AG 2023-07-01
Series:Biomolecules
Subjects:
Online Access:https://www.mdpi.com/2218-273X/13/8/1193
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author Nandita Menon
Anil Kishen
author_facet Nandita Menon
Anil Kishen
author_sort Nandita Menon
collection DOAJ
description Periradicular tissues have a rich supply of peripheral afferent neurons, also known as nociceptive neurons, originating from the trigeminal nerve. While their primary function is to relay pain signals to the brain, these are known to be involved in modulating innate and adaptive immunity by initiating neurogenic inflammation (NI). Studies have investigated neuroanatomy and measured the levels of biomolecules such as cytokines and neuropeptides in human saliva, gingival crevicular fluid, or blood/serum samples in apical periodontitis (AP) to validate the possible role of trigeminal nociceptors in inflammation and tissue regeneration. However, the contributions of nociceptors and the mechanisms involved in the neuro-immune interactions in AP are not fully understood. This narrative review addresses the complex biomolecular interactions of trigeminal nociceptors with macrophages, the effector cells of the innate immune system, in the clinical manifestations of AP.
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spelling doaj.art-1915deed95e24e7a83315e86c3b95ba02023-11-19T00:23:32ZengMDPI AGBiomolecules2218-273X2023-07-01138119310.3390/biom13081193Nociceptor–Macrophage Interactions in Apical Periodontitis: How Biomolecules Link Inflammation with PainNandita Menon0Anil Kishen1Dental Research Institute, Faculty of Dentistry, University of Toronto, Toronto, ON M5G 1G6, CanadaDental Research Institute, Faculty of Dentistry, University of Toronto, Toronto, ON M5G 1G6, CanadaPeriradicular tissues have a rich supply of peripheral afferent neurons, also known as nociceptive neurons, originating from the trigeminal nerve. While their primary function is to relay pain signals to the brain, these are known to be involved in modulating innate and adaptive immunity by initiating neurogenic inflammation (NI). Studies have investigated neuroanatomy and measured the levels of biomolecules such as cytokines and neuropeptides in human saliva, gingival crevicular fluid, or blood/serum samples in apical periodontitis (AP) to validate the possible role of trigeminal nociceptors in inflammation and tissue regeneration. However, the contributions of nociceptors and the mechanisms involved in the neuro-immune interactions in AP are not fully understood. This narrative review addresses the complex biomolecular interactions of trigeminal nociceptors with macrophages, the effector cells of the innate immune system, in the clinical manifestations of AP.https://www.mdpi.com/2218-273X/13/8/1193nociceptorsmacrophagesneuropeptidessubstance PCalcitonin Gene-Related Peptidepain
spellingShingle Nandita Menon
Anil Kishen
Nociceptor–Macrophage Interactions in Apical Periodontitis: How Biomolecules Link Inflammation with Pain
Biomolecules
nociceptors
macrophages
neuropeptides
substance P
Calcitonin Gene-Related Peptide
pain
title Nociceptor–Macrophage Interactions in Apical Periodontitis: How Biomolecules Link Inflammation with Pain
title_full Nociceptor–Macrophage Interactions in Apical Periodontitis: How Biomolecules Link Inflammation with Pain
title_fullStr Nociceptor–Macrophage Interactions in Apical Periodontitis: How Biomolecules Link Inflammation with Pain
title_full_unstemmed Nociceptor–Macrophage Interactions in Apical Periodontitis: How Biomolecules Link Inflammation with Pain
title_short Nociceptor–Macrophage Interactions in Apical Periodontitis: How Biomolecules Link Inflammation with Pain
title_sort nociceptor macrophage interactions in apical periodontitis how biomolecules link inflammation with pain
topic nociceptors
macrophages
neuropeptides
substance P
Calcitonin Gene-Related Peptide
pain
url https://www.mdpi.com/2218-273X/13/8/1193
work_keys_str_mv AT nanditamenon nociceptormacrophageinteractionsinapicalperiodontitishowbiomoleculeslinkinflammationwithpain
AT anilkishen nociceptormacrophageinteractionsinapicalperiodontitishowbiomoleculeslinkinflammationwithpain