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Evaluation of the long-term effect of polyhexamethylene guanidine phosphate in a rat lung model using conventional chest computed tomography with histopathologic analysis

There have been no studies on the effects of polyhexamethylene guanidine phosphate (PHMG) after a long period of exposure in the rodent model. We aimed to evaluate long-term lung damage after PHMG exposure using conventional chest computed tomography (CT) and histopathologic analysis in a rat model....

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Autores principales: Kim, Cherry, Jeong, Sang Hoon, Kim, Jaeyoung, Kang, Ja Young, Nam, Yoon Jeong, Togloom, Ariunaa, Cha, Jaehyung, Lee, Ki Yeol, Lee, Chang Hyun, Park, Eun-Kee, Lee, Ju-Han
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8423271/
https://www.ncbi.nlm.nih.gov/pubmed/34492061
http://dx.doi.org/10.1371/journal.pone.0256756
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author Kim, Cherry
Jeong, Sang Hoon
Kim, Jaeyoung
Kang, Ja Young
Nam, Yoon Jeong
Togloom, Ariunaa
Cha, Jaehyung
Lee, Ki Yeol
Lee, Chang Hyun
Park, Eun-Kee
Lee, Ju-Han
author_facet Kim, Cherry
Jeong, Sang Hoon
Kim, Jaeyoung
Kang, Ja Young
Nam, Yoon Jeong
Togloom, Ariunaa
Cha, Jaehyung
Lee, Ki Yeol
Lee, Chang Hyun
Park, Eun-Kee
Lee, Ju-Han
author_sort Kim, Cherry
collection PubMed
description There have been no studies on the effects of polyhexamethylene guanidine phosphate (PHMG) after a long period of exposure in the rodent model. We aimed to evaluate long-term lung damage after PHMG exposure using conventional chest computed tomography (CT) and histopathologic analysis in a rat model. A PHMG solution was intratracheally administrated to 24 male rats. At 8, 26, and 52 weeks after PHMG instillation, conventional chest CT was performed in all rats and both lungs were extracted for histopathologic evaluation. At 52 weeks after PHMG instillation, four carcinomas had developed in three of the eight rats (37.5%). Bronchiolo-alveolar hyperplasia and adenoma were found in rats at 8, 26, and 52 weeks post-instillation. The number of bronchiolo-alveolar hyperplasia significantly increased over time (P-value for trend< 0.001). The severity of lung fibrosis and fibrosis scores significantly increased over time (P-values for trend = 0.002 and 0.023, respectively). Conventional chest CT analysis showed that bronchiectasis and linear density scores suggestive of fibrosis significantly increased over time (P-value for trend < 0.001). Our study revealed that one instillation of PHMG in a rat model resulted in lung carcinomas and progressive and irreversible fibrosis one year later based on conventional chest CT and histopathologic analysis. PHMG may be a lung carcinogen in the rat model.
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spelling pubmed-84232712021-09-08 Evaluation of the long-term effect of polyhexamethylene guanidine phosphate in a rat lung model using conventional chest computed tomography with histopathologic analysis Kim, Cherry Jeong, Sang Hoon Kim, Jaeyoung Kang, Ja Young Nam, Yoon Jeong Togloom, Ariunaa Cha, Jaehyung Lee, Ki Yeol Lee, Chang Hyun Park, Eun-Kee Lee, Ju-Han PLoS One Research Article There have been no studies on the effects of polyhexamethylene guanidine phosphate (PHMG) after a long period of exposure in the rodent model. We aimed to evaluate long-term lung damage after PHMG exposure using conventional chest computed tomography (CT) and histopathologic analysis in a rat model. A PHMG solution was intratracheally administrated to 24 male rats. At 8, 26, and 52 weeks after PHMG instillation, conventional chest CT was performed in all rats and both lungs were extracted for histopathologic evaluation. At 52 weeks after PHMG instillation, four carcinomas had developed in three of the eight rats (37.5%). Bronchiolo-alveolar hyperplasia and adenoma were found in rats at 8, 26, and 52 weeks post-instillation. The number of bronchiolo-alveolar hyperplasia significantly increased over time (P-value for trend< 0.001). The severity of lung fibrosis and fibrosis scores significantly increased over time (P-values for trend = 0.002 and 0.023, respectively). Conventional chest CT analysis showed that bronchiectasis and linear density scores suggestive of fibrosis significantly increased over time (P-value for trend < 0.001). Our study revealed that one instillation of PHMG in a rat model resulted in lung carcinomas and progressive and irreversible fibrosis one year later based on conventional chest CT and histopathologic analysis. PHMG may be a lung carcinogen in the rat model. Public Library of Science 2021-09-07 /pmc/articles/PMC8423271/ /pubmed/34492061 http://dx.doi.org/10.1371/journal.pone.0256756 Text en © 2021 Kim et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Kim, Cherry
Jeong, Sang Hoon
Kim, Jaeyoung
Kang, Ja Young
Nam, Yoon Jeong
Togloom, Ariunaa
Cha, Jaehyung
Lee, Ki Yeol
Lee, Chang Hyun
Park, Eun-Kee
Lee, Ju-Han
Evaluation of the long-term effect of polyhexamethylene guanidine phosphate in a rat lung model using conventional chest computed tomography with histopathologic analysis
title Evaluation of the long-term effect of polyhexamethylene guanidine phosphate in a rat lung model using conventional chest computed tomography with histopathologic analysis
title_full Evaluation of the long-term effect of polyhexamethylene guanidine phosphate in a rat lung model using conventional chest computed tomography with histopathologic analysis
title_fullStr Evaluation of the long-term effect of polyhexamethylene guanidine phosphate in a rat lung model using conventional chest computed tomography with histopathologic analysis
title_full_unstemmed Evaluation of the long-term effect of polyhexamethylene guanidine phosphate in a rat lung model using conventional chest computed tomography with histopathologic analysis
title_short Evaluation of the long-term effect of polyhexamethylene guanidine phosphate in a rat lung model using conventional chest computed tomography with histopathologic analysis
title_sort evaluation of the long-term effect of polyhexamethylene guanidine phosphate in a rat lung model using conventional chest computed tomography with histopathologic analysis
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8423271/
https://www.ncbi.nlm.nih.gov/pubmed/34492061
http://dx.doi.org/10.1371/journal.pone.0256756
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