Abstract
Originalsprog | Engelsk |
---|---|
Tidsskrift | Journal of Neuroscience Research |
Vol/bind | 73 |
Udgave nummer | 4 |
Sider (fra-til) | 481-96 |
Antal sider | 15 |
ISSN | 0360-4012 |
DOI | |
Status | Udgivet - 2003 |
Bibliografisk note
Copyright 2003 Wiley-Liss, Inc.Adgang til dokumentet
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Astrocyte-targeted expression of interleukin-6 protects the central nervous system during neuroglial degeneration induced by 6-aminonicotinamide. / Penkowa, Milena; Camats, Jordi; Hadberg, Hanne; Quintana, Albert; Rojas, Santiago; Giralt, Mercedes; Molinero, Amalia; Campbell, Iain L; Hidalgo, Juan.
I: Journal of Neuroscience Research, Bind 73, Nr. 4, 2003, s. 481-96.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review
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TY - JOUR
T1 - Astrocyte-targeted expression of interleukin-6 protects the central nervous system during neuroglial degeneration induced by 6-aminonicotinamide
AU - Penkowa, Milena
AU - Camats, Jordi
AU - Hadberg, Hanne
AU - Quintana, Albert
AU - Rojas, Santiago
AU - Giralt, Mercedes
AU - Molinero, Amalia
AU - Campbell, Iain L
AU - Hidalgo, Juan
N1 - Keywords: 6-Aminonicotinamide; Angiogenesis Inducing Agents; Animals; Apoptosis; Astrocytes; Brain Stem; Cell Count; Central Nervous System; Cytokines; Disease Models, Animal; Gene Targeting; Glial Fibrillary Acidic Protein; Growth Substances; Immunohistochemistry; In Situ Nick-End Labeling; Interleukin-6; Lymphocytes; Macrophages; Malondialdehyde; Metallothionein; Mice; Mice, Inbred C57BL; Mice, Transgenic; Microglia; Nerve Degeneration; Oxidative Stress; Staining and Labeling; Stem Cells; Teratogens; Tyrosine
PY - 2003
Y1 - 2003
N2 - 6-aminonicotinamide (6-AN) is a niacin antagonist, which leads to degeneration of gray matter astrocytes mainly in the brainstem. We have examined the role of interleukin-6 (IL-6) in this degenerative process by using transgenic mice with astrocyte-targeted IL-6 expression (GFAP-IL6 mice). This study demonstrates that transgenic IL-6 expression significantly increases the 6-AN-induced inflammatory response of reactive astrocytes, microglia/macrophages, and lymphocytes in the brainstem. Also, IL-6 induced significant increases in proinflammatory cytokines IL-1, IL-12, and tumor necrosis factor-alpha as well as growth factors basic fibroblast growth factor (bFGF), transforming growth factor-beta, neurotrophin-3, angiopoietin, vascular endothelial growth factor, and the receptor for bFGF. In accordance, angiogenesis was increased in GFAP-IL6 mice relative to controls after 6-AN. Moreover, oxidative stress and apoptotic cell death were significantly reduced by transgenic IL-6 expression. IL-6 is also a major inducer in the CNS of metallothionein I and II (MT-I+II), which were significantly increased in the GFAP-IL6 mice. MT-I+II are antioxidants and neuroregenerative factors in the CNS, so increased MT-I+II levels in GFAP-IL6 mice could contribute to the reduction of oxidative stress and cell death in these mice.
AB - 6-aminonicotinamide (6-AN) is a niacin antagonist, which leads to degeneration of gray matter astrocytes mainly in the brainstem. We have examined the role of interleukin-6 (IL-6) in this degenerative process by using transgenic mice with astrocyte-targeted IL-6 expression (GFAP-IL6 mice). This study demonstrates that transgenic IL-6 expression significantly increases the 6-AN-induced inflammatory response of reactive astrocytes, microglia/macrophages, and lymphocytes in the brainstem. Also, IL-6 induced significant increases in proinflammatory cytokines IL-1, IL-12, and tumor necrosis factor-alpha as well as growth factors basic fibroblast growth factor (bFGF), transforming growth factor-beta, neurotrophin-3, angiopoietin, vascular endothelial growth factor, and the receptor for bFGF. In accordance, angiogenesis was increased in GFAP-IL6 mice relative to controls after 6-AN. Moreover, oxidative stress and apoptotic cell death were significantly reduced by transgenic IL-6 expression. IL-6 is also a major inducer in the CNS of metallothionein I and II (MT-I+II), which were significantly increased in the GFAP-IL6 mice. MT-I+II are antioxidants and neuroregenerative factors in the CNS, so increased MT-I+II levels in GFAP-IL6 mice could contribute to the reduction of oxidative stress and cell death in these mice.
U2 - 10.1002/jnr.10681
DO - 10.1002/jnr.10681
M3 - Journal article
C2 - 12898533
VL - 73
SP - 481
EP - 496
JO - Journal of Neuroscience Research
JF - Journal of Neuroscience Research
SN - 0360-4012
IS - 4
ER -