Systemic exposure to a single dose of ferucarbotran aggravates neuroinflammation in a murine model of experimental autoimmune encephalomyelitis

Yai-Ping Hsiao,1 Chung-Hsiung Huang,2 Yu-Chin Lin,3 Tong-Rong Jan1 1Department and Graduate Institute of Veterinary Medicine, School of Veterinary Medicine, National Taiwan University, Taipei, Taiwan; 2Department of Food Science, National Taiwan Ocean University, Keelung, Taiwan; 3Department of Med...

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Autores principales:	Hsiao YP, Huang CH, Lin YC, Jan TR
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2019
Materias:	experimental autoimmune encephalomyelitis ferucarbotran iron oxide nanoparticles microglia neuroinflammation T cell Medicine (General) R5-920
Acceso en línea:	https://doaj.org/article/e67163fe4aaa4a8a9dec45c527ddc1e2
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spelling	oai:doaj.org-article:e67163fe4aaa4a8a9dec45c527ddc1e22021-12-02T03:19:20ZSystemic exposure to a single dose of ferucarbotran aggravates neuroinflammation in a murine model of experimental autoimmune encephalomyelitis1178-2013https://doaj.org/article/e67163fe4aaa4a8a9dec45c527ddc1e22019-02-01T00:00:00Zhttps://www.dovepress.com/systemic-exposure-to-a-single-dose-of-ferucarbotran-aggravates-neuroin-peer-reviewed-article-IJNhttps://doaj.org/toc/1178-2013Yai-Ping Hsiao,1 Chung-Hsiung Huang,2 Yu-Chin Lin,3 Tong-Rong Jan1 1Department and Graduate Institute of Veterinary Medicine, School of Veterinary Medicine, National Taiwan University, Taipei, Taiwan; 2Department of Food Science, National Taiwan Ocean University, Keelung, Taiwan; 3Department of Medicinal Botanicals and Health Applications, College of Biotechnology & Bioresources, Da-Yeh University, Changhua, Taiwan Background: Medicinal preparations of iron oxide nanoparticles (IONPs) have been used as MRI contrast agents for the diagnosis of hepatic tumors and the assessment of neuroinflammation and blood–brain barrier integrity. However, it remains mostly unclear whether exposure to IONPs affects neuroinflammation under disease conditions. The present study aims to investigate the impact of IONPs on autoimmune-mediated neuroinflammation using a murine model of experimental autoimmune encephalomyelitis (EAE) that mimics human multiple sclerosis.Methods: Mice were either left untreated or immunized with myelin oligodendrocyte glycoprotein on day 0 followed by two injections of pertussis toxin for EAE induction. The EAE mice were intravenously administered with a single dose of the carboxydextran-coated IONPs, ferucarbotran (20 mg Fe/kg) and/or saline (as vehicle) on day 18. Symptoms of EAE were daily monitored until the mice were killed on day 30. Tissue sections of the brain and spinal cord were prepared for histopathological examinations. Iron deposition, neuron demyelination and inflammatory cell infiltration were examined using histochemical staining. The infiltration of microglial and T cells, and cytokine expression were examined by immunohistochemical staining and/or reverse transcription polymerase chain reaction (RT-PCR).Results: Iron deposition was detected in both the brain and spinal cord of EAE mice 3 days post-ferucarbotran treatment. The clinical and pathological scores of EAE, percentage of myelin loss and infiltration of inflammatory cells into the spinal cord were significantly deteriorated in EAE mice treated with ferucarbotran. Furthermore, ferucarbotran treatment increased the number of CD3+, Iba-1+, IL-6+, Iba-1+TNF-α+ and CD3+IFN-γ+ cells in the spinal cord of EAE mice.Conclusion: A single exposure to ferucarbotran exacerbated neuroinflammation and disease severity of EAE, which might be attributed to the enhanced activation of microglia and T cells. These results demonstrated that the pro-inflammatory effect of ferucarbotran on the central nervous system is closely associated with the deterioration of autoimmunity. Keywords: experimental autoimmune encephalomyelitis, ferucarbotran, iron oxide nanoparticles, microglia, neuroinflammation, T cell, multiple sclerosisHsiao YPHuang CHLin YCJan TRDove Medical Pressarticleexperimental autoimmune encephalomyelitisferucarbotraniron oxide nanoparticlesmicroglianeuroinflammationT cellMedicine (General)R5-920ENInternational Journal of Nanomedicine, Vol Volume 14, Pp 1229-1240 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	experimental autoimmune encephalomyelitis ferucarbotran iron oxide nanoparticles microglia neuroinflammation T cell Medicine (General) R5-920
spellingShingle	experimental autoimmune encephalomyelitis ferucarbotran iron oxide nanoparticles microglia neuroinflammation T cell Medicine (General) R5-920 Hsiao YP Huang CH Lin YC Jan TR Systemic exposure to a single dose of ferucarbotran aggravates neuroinflammation in a murine model of experimental autoimmune encephalomyelitis
description	Yai-Ping Hsiao,1 Chung-Hsiung Huang,2 Yu-Chin Lin,3 Tong-Rong Jan1 1Department and Graduate Institute of Veterinary Medicine, School of Veterinary Medicine, National Taiwan University, Taipei, Taiwan; 2Department of Food Science, National Taiwan Ocean University, Keelung, Taiwan; 3Department of Medicinal Botanicals and Health Applications, College of Biotechnology & Bioresources, Da-Yeh University, Changhua, Taiwan Background: Medicinal preparations of iron oxide nanoparticles (IONPs) have been used as MRI contrast agents for the diagnosis of hepatic tumors and the assessment of neuroinflammation and blood–brain barrier integrity. However, it remains mostly unclear whether exposure to IONPs affects neuroinflammation under disease conditions. The present study aims to investigate the impact of IONPs on autoimmune-mediated neuroinflammation using a murine model of experimental autoimmune encephalomyelitis (EAE) that mimics human multiple sclerosis.Methods: Mice were either left untreated or immunized with myelin oligodendrocyte glycoprotein on day 0 followed by two injections of pertussis toxin for EAE induction. The EAE mice were intravenously administered with a single dose of the carboxydextran-coated IONPs, ferucarbotran (20 mg Fe/kg) and/or saline (as vehicle) on day 18. Symptoms of EAE were daily monitored until the mice were killed on day 30. Tissue sections of the brain and spinal cord were prepared for histopathological examinations. Iron deposition, neuron demyelination and inflammatory cell infiltration were examined using histochemical staining. The infiltration of microglial and T cells, and cytokine expression were examined by immunohistochemical staining and/or reverse transcription polymerase chain reaction (RT-PCR).Results: Iron deposition was detected in both the brain and spinal cord of EAE mice 3 days post-ferucarbotran treatment. The clinical and pathological scores of EAE, percentage of myelin loss and infiltration of inflammatory cells into the spinal cord were significantly deteriorated in EAE mice treated with ferucarbotran. Furthermore, ferucarbotran treatment increased the number of CD3+, Iba-1+, IL-6+, Iba-1+TNF-α+ and CD3+IFN-γ+ cells in the spinal cord of EAE mice.Conclusion: A single exposure to ferucarbotran exacerbated neuroinflammation and disease severity of EAE, which might be attributed to the enhanced activation of microglia and T cells. These results demonstrated that the pro-inflammatory effect of ferucarbotran on the central nervous system is closely associated with the deterioration of autoimmunity. Keywords: experimental autoimmune encephalomyelitis, ferucarbotran, iron oxide nanoparticles, microglia, neuroinflammation, T cell, multiple sclerosis
format	article
author	Hsiao YP Huang CH Lin YC Jan TR
author_facet	Hsiao YP Huang CH Lin YC Jan TR
author_sort	Hsiao YP
title	Systemic exposure to a single dose of ferucarbotran aggravates neuroinflammation in a murine model of experimental autoimmune encephalomyelitis
title_short	Systemic exposure to a single dose of ferucarbotran aggravates neuroinflammation in a murine model of experimental autoimmune encephalomyelitis
title_full	Systemic exposure to a single dose of ferucarbotran aggravates neuroinflammation in a murine model of experimental autoimmune encephalomyelitis
title_fullStr	Systemic exposure to a single dose of ferucarbotran aggravates neuroinflammation in a murine model of experimental autoimmune encephalomyelitis
title_full_unstemmed	Systemic exposure to a single dose of ferucarbotran aggravates neuroinflammation in a murine model of experimental autoimmune encephalomyelitis
title_sort	systemic exposure to a single dose of ferucarbotran aggravates neuroinflammation in a murine model of experimental autoimmune encephalomyelitis
publisher	Dove Medical Press
publishDate	2019
url	https://doaj.org/article/e67163fe4aaa4a8a9dec45c527ddc1e2
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Systemic exposure to a single dose of ferucarbotran aggravates neuroinflammation in a murine model of experimental autoimmune encephalomyelitis

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