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Nicotinamide enhances myelin production after demyelination through reduction of astrogliosis and microgliosis
Caloric restriction is the chronic reduction of total caloric intake without malnutrition and has attracted a lot of attention as, among multiple other effects, it attenuates demyelination and stimulates remyelination. In this study we have evaluated the effect of nicotinamide (NAM), a well-known ca...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Frontiers Media S.A.
2023
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10469866/ https://www.ncbi.nlm.nih.gov/pubmed/37663127 http://dx.doi.org/10.3389/fncel.2023.1201317 |
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author | Kaplanis, Stefanos Ioannis Kaffe, Despoina Ktena, Niki Lygeraki, Andriani Kolliniati, Ourania Savvaki, Maria Karagogeos, Domna |
author_facet | Kaplanis, Stefanos Ioannis Kaffe, Despoina Ktena, Niki Lygeraki, Andriani Kolliniati, Ourania Savvaki, Maria Karagogeos, Domna |
author_sort | Kaplanis, Stefanos Ioannis |
collection | PubMed |
description | Caloric restriction is the chronic reduction of total caloric intake without malnutrition and has attracted a lot of attention as, among multiple other effects, it attenuates demyelination and stimulates remyelination. In this study we have evaluated the effect of nicotinamide (NAM), a well-known caloric restriction mimetic, on myelin production upon demyelinating conditions. NAM is the derivative of nicotinic acid (vitamin B3) and a precursor of nicotinamide adenine dinucleotide (NAD(+)), a ubiquitous metabolic cofactor. Here, we use cortical slices ex vivo subjected to demyelination or cultured upon normal conditions, a lysolecithin (LPC)-induced focal demyelination mouse model as well as primary glial cultures. Our data show that NAM enhances both myelination and remyelination ex vivo, while it also induces myelin production after LPC-induced focal demyelination ex vivo and in vivo. The increased myelin production is accompanied by reduction in both astrogliosis and microgliosis in vivo. There is no direct effect of NAM on the oligodendrocyte lineage, as no differences are observed in oligodendrocyte precursor cell proliferation or differentiation or in the number of mature oligodendrocytes. On the other hand, NAM affects both microglia and astrocytes as it decreases the population of M1-activated microglia, while reducing the pro-inflammatory phenotype of astrocytes as assayed by the reduction of TNF-α. Overall, we show that the increased myelin production that follows NAM treatment in vivo is accompanied by a decrease in both astrocyte and microglia accumulation at the lesion site. Our data indicate that NAM influences astrocytes and microglia directly, in favor of the remyelination process by promoting a less inflammatory environment. |
format | Online Article Text |
id | pubmed-10469866 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-104698662023-09-01 Nicotinamide enhances myelin production after demyelination through reduction of astrogliosis and microgliosis Kaplanis, Stefanos Ioannis Kaffe, Despoina Ktena, Niki Lygeraki, Andriani Kolliniati, Ourania Savvaki, Maria Karagogeos, Domna Front Cell Neurosci Neuroscience Caloric restriction is the chronic reduction of total caloric intake without malnutrition and has attracted a lot of attention as, among multiple other effects, it attenuates demyelination and stimulates remyelination. In this study we have evaluated the effect of nicotinamide (NAM), a well-known caloric restriction mimetic, on myelin production upon demyelinating conditions. NAM is the derivative of nicotinic acid (vitamin B3) and a precursor of nicotinamide adenine dinucleotide (NAD(+)), a ubiquitous metabolic cofactor. Here, we use cortical slices ex vivo subjected to demyelination or cultured upon normal conditions, a lysolecithin (LPC)-induced focal demyelination mouse model as well as primary glial cultures. Our data show that NAM enhances both myelination and remyelination ex vivo, while it also induces myelin production after LPC-induced focal demyelination ex vivo and in vivo. The increased myelin production is accompanied by reduction in both astrogliosis and microgliosis in vivo. There is no direct effect of NAM on the oligodendrocyte lineage, as no differences are observed in oligodendrocyte precursor cell proliferation or differentiation or in the number of mature oligodendrocytes. On the other hand, NAM affects both microglia and astrocytes as it decreases the population of M1-activated microglia, while reducing the pro-inflammatory phenotype of astrocytes as assayed by the reduction of TNF-α. Overall, we show that the increased myelin production that follows NAM treatment in vivo is accompanied by a decrease in both astrocyte and microglia accumulation at the lesion site. Our data indicate that NAM influences astrocytes and microglia directly, in favor of the remyelination process by promoting a less inflammatory environment. Frontiers Media S.A. 2023-08-17 /pmc/articles/PMC10469866/ /pubmed/37663127 http://dx.doi.org/10.3389/fncel.2023.1201317 Text en Copyright © 2023 Kaplanis, Kaffe, Ktena, Lygeraki, Kolliniati, Savvaki and Karagogeos. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Neuroscience Kaplanis, Stefanos Ioannis Kaffe, Despoina Ktena, Niki Lygeraki, Andriani Kolliniati, Ourania Savvaki, Maria Karagogeos, Domna Nicotinamide enhances myelin production after demyelination through reduction of astrogliosis and microgliosis |
title | Nicotinamide enhances myelin production after demyelination through reduction of astrogliosis and microgliosis |
title_full | Nicotinamide enhances myelin production after demyelination through reduction of astrogliosis and microgliosis |
title_fullStr | Nicotinamide enhances myelin production after demyelination through reduction of astrogliosis and microgliosis |
title_full_unstemmed | Nicotinamide enhances myelin production after demyelination through reduction of astrogliosis and microgliosis |
title_short | Nicotinamide enhances myelin production after demyelination through reduction of astrogliosis and microgliosis |
title_sort | nicotinamide enhances myelin production after demyelination through reduction of astrogliosis and microgliosis |
topic | Neuroscience |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10469866/ https://www.ncbi.nlm.nih.gov/pubmed/37663127 http://dx.doi.org/10.3389/fncel.2023.1201317 |
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