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Effects of Ozone on Sickness and Depressive-like Behavioral and Biochemical Phenotypes and Their Regulation by Serum Amyloid A in Mice
Ozone (O(3)) is an air pollutant that primarily damages the lungs, but growing evidence supports the idea that O(3) also harms the brain; acute exposure to O(3) has been linked to central nervous system (CNS) symptoms such as depressed mood and sickness behaviors. However, the mechanisms by which O(...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9860713/ https://www.ncbi.nlm.nih.gov/pubmed/36675130 http://dx.doi.org/10.3390/ijms24021612 |
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author | Baumann, Kristen K. Liang, W. Sandy Quaranta, Daniel V. Wilson, Miranda L. Asrat, Helina S. Thysell, Jarl A. Sarchi, Angelo V. Banks, William A. Erickson, Michelle A. |
author_facet | Baumann, Kristen K. Liang, W. Sandy Quaranta, Daniel V. Wilson, Miranda L. Asrat, Helina S. Thysell, Jarl A. Sarchi, Angelo V. Banks, William A. Erickson, Michelle A. |
author_sort | Baumann, Kristen K. |
collection | PubMed |
description | Ozone (O(3)) is an air pollutant that primarily damages the lungs, but growing evidence supports the idea that O(3) also harms the brain; acute exposure to O(3) has been linked to central nervous system (CNS) symptoms such as depressed mood and sickness behaviors. However, the mechanisms by which O(3) inhalation causes neurobehavioral changes are limited. One hypothesis is that factors in the circulation bridge communication between the lungs and brain following O(3) exposure. In this study, our goals were to characterize neurobehavioral endpoints of O(3) exposure as they relate to markers of systemic and pulmonary inflammation, with a particular focus on serum amyloid A (SAA) and kynurenine as candidate mediators of O(3) behavioral effects. We evaluated O(3)-induced dose-, time- and sex-dependent changes in pulmonary inflammation, circulating SAA and kynurenine and its metabolic enzymes, and sickness and depressive-like behaviors in Balb/c and CD-1 mice. We found that 3 parts per million (ppm) O(3), but not 2 or 1 ppm O(3), increased circulating SAA and lung inflammation, which were resolved by 48 h and was worse in females. We also found that indoleamine 2,3-dioxygenase (Ido1) mRNA expression was increased in the brain and spleen 24 h after 3 ppm O(3) and that kynurenine was increased in blood. Sickness and depressive-like behaviors were observed at all O(3) doses (1–3 ppm), suggesting that behavioral responses to O(3) can occur independently of increased SAA or neutrophils in the lungs. Using SAA knockout mice, we found that SAA did not contribute to O(3)-induced pulmonary damage or inflammation, systemic increases in kynurenine post-O(3), or depressive-like behavior but did contribute to weight loss. Together, these findings indicate that acute O(3) exposure induces transient symptoms of sickness and depressive-like behaviors that may occur in the presence or absence of overt pulmonary neutrophilia and systemic increases of SAA. SAA does not appear to contribute to pulmonary inflammation induced by O(3), although it may contribute to other aspects of sickness behavior, as reflected by a modest effect on weight loss. |
format | Online Article Text |
id | pubmed-9860713 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-98607132023-01-22 Effects of Ozone on Sickness and Depressive-like Behavioral and Biochemical Phenotypes and Their Regulation by Serum Amyloid A in Mice Baumann, Kristen K. Liang, W. Sandy Quaranta, Daniel V. Wilson, Miranda L. Asrat, Helina S. Thysell, Jarl A. Sarchi, Angelo V. Banks, William A. Erickson, Michelle A. Int J Mol Sci Article Ozone (O(3)) is an air pollutant that primarily damages the lungs, but growing evidence supports the idea that O(3) also harms the brain; acute exposure to O(3) has been linked to central nervous system (CNS) symptoms such as depressed mood and sickness behaviors. However, the mechanisms by which O(3) inhalation causes neurobehavioral changes are limited. One hypothesis is that factors in the circulation bridge communication between the lungs and brain following O(3) exposure. In this study, our goals were to characterize neurobehavioral endpoints of O(3) exposure as they relate to markers of systemic and pulmonary inflammation, with a particular focus on serum amyloid A (SAA) and kynurenine as candidate mediators of O(3) behavioral effects. We evaluated O(3)-induced dose-, time- and sex-dependent changes in pulmonary inflammation, circulating SAA and kynurenine and its metabolic enzymes, and sickness and depressive-like behaviors in Balb/c and CD-1 mice. We found that 3 parts per million (ppm) O(3), but not 2 or 1 ppm O(3), increased circulating SAA and lung inflammation, which were resolved by 48 h and was worse in females. We also found that indoleamine 2,3-dioxygenase (Ido1) mRNA expression was increased in the brain and spleen 24 h after 3 ppm O(3) and that kynurenine was increased in blood. Sickness and depressive-like behaviors were observed at all O(3) doses (1–3 ppm), suggesting that behavioral responses to O(3) can occur independently of increased SAA or neutrophils in the lungs. Using SAA knockout mice, we found that SAA did not contribute to O(3)-induced pulmonary damage or inflammation, systemic increases in kynurenine post-O(3), or depressive-like behavior but did contribute to weight loss. Together, these findings indicate that acute O(3) exposure induces transient symptoms of sickness and depressive-like behaviors that may occur in the presence or absence of overt pulmonary neutrophilia and systemic increases of SAA. SAA does not appear to contribute to pulmonary inflammation induced by O(3), although it may contribute to other aspects of sickness behavior, as reflected by a modest effect on weight loss. MDPI 2023-01-13 /pmc/articles/PMC9860713/ /pubmed/36675130 http://dx.doi.org/10.3390/ijms24021612 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Baumann, Kristen K. Liang, W. Sandy Quaranta, Daniel V. Wilson, Miranda L. Asrat, Helina S. Thysell, Jarl A. Sarchi, Angelo V. Banks, William A. Erickson, Michelle A. Effects of Ozone on Sickness and Depressive-like Behavioral and Biochemical Phenotypes and Their Regulation by Serum Amyloid A in Mice |
title | Effects of Ozone on Sickness and Depressive-like Behavioral and Biochemical Phenotypes and Their Regulation by Serum Amyloid A in Mice |
title_full | Effects of Ozone on Sickness and Depressive-like Behavioral and Biochemical Phenotypes and Their Regulation by Serum Amyloid A in Mice |
title_fullStr | Effects of Ozone on Sickness and Depressive-like Behavioral and Biochemical Phenotypes and Their Regulation by Serum Amyloid A in Mice |
title_full_unstemmed | Effects of Ozone on Sickness and Depressive-like Behavioral and Biochemical Phenotypes and Their Regulation by Serum Amyloid A in Mice |
title_short | Effects of Ozone on Sickness and Depressive-like Behavioral and Biochemical Phenotypes and Their Regulation by Serum Amyloid A in Mice |
title_sort | effects of ozone on sickness and depressive-like behavioral and biochemical phenotypes and their regulation by serum amyloid a in mice |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9860713/ https://www.ncbi.nlm.nih.gov/pubmed/36675130 http://dx.doi.org/10.3390/ijms24021612 |
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