Increased osteopontin expression following intranigral lipopolysaccharide injection in the rat
Nigral cell death in Parkinson's disease is characterized by glial cell activation leading to inflammatory changes. Osteopontin (OPN) is a glycosylated phosphoprotein that is induced by inflammatory mediators and which we have previously shown to be present in the substantia nigra. However, the...
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| Autor*in: |
Iczkiewicz, Joanna [verfasserIn] Rose, Sarah [verfasserIn] Jenner, Peter [verfasserIn] |
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| Format: |
E-Artikel |
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| Erschienen: |
Oxford, UK: Blackwell Science Ltd ; 2005 |
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| Schlagwörter: |
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| Umfang: |
Online-Ressource |
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| Reproduktion: |
2005 ; Blackwell Publishing Journal Backfiles 1879-2005 |
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| Übergeordnetes Werk: |
In: European journal of neuroscience - Oxford [u.a.] : Blackwell, 1989, 21(2005), 7, Seite 0 |
| Übergeordnetes Werk: |
volume:21 ; year:2005 ; number:7 ; pages:0 |
| Links: |
|---|
| DOI / URN: |
10.1111/j.1460-9568.2005.04009.x |
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NLEJ242411584 |
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| 520 | |a Nigral cell death in Parkinson's disease is characterized by glial cell activation leading to inflammatory changes. Osteopontin (OPN) is a glycosylated phosphoprotein that is induced by inflammatory mediators and which we have previously shown to be present in the substantia nigra. However, the role of OPN in the nigral inflammation is not known. We now report on the effects of lipopolysaccharide (LPS)-induced glial cell activation in the substantia nigra of rats on OPN expression. LPS administration induced dopaminergic cell death as shown by reduced nigral tyrosine hydroxylase immunoreactivity. There was a corresponding time-dependent increase in both OPN mRNA, which was maximal at 48 h, and protein levels, which peaked at 72 h before returning to control levels by 120 h. This increase was accompanied by marked reactive gliosis as shown by increased OX-42, glial fibrillary acidic protein (GFAP) and ED1 immunoreactivity. OX-42-positive cells increased in a time-dependent manner, peaking at 72 h before returning to control levels at 120 h. Similarly, ED1-positive cells were present in their greatest numbers at 24 h but then gradually declined. These changes mirrored the alterations occurring in OPN protein and OPN mRNA, respectively. In contrast, GFAP-positive cells only started to increase in number at 120 h. Colocalization studies showed that OPN was present in both ED1- and OX-42-positive cells but not in GFAP-positive cells. These data confirm that intranigral injection of LPS induces a rapid and marked gliosis that accompanies the loss of tyrosine hydroxylase-positive neurones and suggest that, after glial cell activation, enhanced expression of OPN occurs linked to increased numbers of microglia and/or macrophages. This suggests that OPN may be functionally important in the control of inflammatory changes. | ||
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10.1111/j.1460-9568.2005.04009.x doi (DE-627)NLEJ242411584 DE-627 ger DE-627 rakwb Iczkiewicz, Joanna verfasserin aut Increased osteopontin expression following intranigral lipopolysaccharide injection in the rat Oxford, UK Blackwell Science Ltd 2005 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Nigral cell death in Parkinson's disease is characterized by glial cell activation leading to inflammatory changes. Osteopontin (OPN) is a glycosylated phosphoprotein that is induced by inflammatory mediators and which we have previously shown to be present in the substantia nigra. However, the role of OPN in the nigral inflammation is not known. We now report on the effects of lipopolysaccharide (LPS)-induced glial cell activation in the substantia nigra of rats on OPN expression. LPS administration induced dopaminergic cell death as shown by reduced nigral tyrosine hydroxylase immunoreactivity. There was a corresponding time-dependent increase in both OPN mRNA, which was maximal at 48 h, and protein levels, which peaked at 72 h before returning to control levels by 120 h. This increase was accompanied by marked reactive gliosis as shown by increased OX-42, glial fibrillary acidic protein (GFAP) and ED1 immunoreactivity. OX-42-positive cells increased in a time-dependent manner, peaking at 72 h before returning to control levels at 120 h. Similarly, ED1-positive cells were present in their greatest numbers at 24 h but then gradually declined. These changes mirrored the alterations occurring in OPN protein and OPN mRNA, respectively. In contrast, GFAP-positive cells only started to increase in number at 120 h. Colocalization studies showed that OPN was present in both ED1- and OX-42-positive cells but not in GFAP-positive cells. These data confirm that intranigral injection of LPS induces a rapid and marked gliosis that accompanies the loss of tyrosine hydroxylase-positive neurones and suggest that, after glial cell activation, enhanced expression of OPN occurs linked to increased numbers of microglia and/or macrophages. This suggests that OPN may be functionally important in the control of inflammatory changes. 2005 Blackwell Publishing Journal Backfiles 1879-2005 |2005|||||||||| glial cells Rose, Sarah verfasserin aut Jenner, Peter verfasserin aut In European journal of neuroscience Oxford [u.a.] : Blackwell, 1989 21(2005), 7, Seite 0 Online-Ressource (DE-627)NLEJ243926383 (DE-600)2005178-5 1460-9568 nnns volume:21 year:2005 number:7 pages:0 http://dx.doi.org/10.1111/j.1460-9568.2005.04009.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 21 2005 7 0 |
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10.1111/j.1460-9568.2005.04009.x doi (DE-627)NLEJ242411584 DE-627 ger DE-627 rakwb Iczkiewicz, Joanna verfasserin aut Increased osteopontin expression following intranigral lipopolysaccharide injection in the rat Oxford, UK Blackwell Science Ltd 2005 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Nigral cell death in Parkinson's disease is characterized by glial cell activation leading to inflammatory changes. Osteopontin (OPN) is a glycosylated phosphoprotein that is induced by inflammatory mediators and which we have previously shown to be present in the substantia nigra. However, the role of OPN in the nigral inflammation is not known. We now report on the effects of lipopolysaccharide (LPS)-induced glial cell activation in the substantia nigra of rats on OPN expression. LPS administration induced dopaminergic cell death as shown by reduced nigral tyrosine hydroxylase immunoreactivity. There was a corresponding time-dependent increase in both OPN mRNA, which was maximal at 48 h, and protein levels, which peaked at 72 h before returning to control levels by 120 h. This increase was accompanied by marked reactive gliosis as shown by increased OX-42, glial fibrillary acidic protein (GFAP) and ED1 immunoreactivity. OX-42-positive cells increased in a time-dependent manner, peaking at 72 h before returning to control levels at 120 h. Similarly, ED1-positive cells were present in their greatest numbers at 24 h but then gradually declined. These changes mirrored the alterations occurring in OPN protein and OPN mRNA, respectively. In contrast, GFAP-positive cells only started to increase in number at 120 h. Colocalization studies showed that OPN was present in both ED1- and OX-42-positive cells but not in GFAP-positive cells. These data confirm that intranigral injection of LPS induces a rapid and marked gliosis that accompanies the loss of tyrosine hydroxylase-positive neurones and suggest that, after glial cell activation, enhanced expression of OPN occurs linked to increased numbers of microglia and/or macrophages. This suggests that OPN may be functionally important in the control of inflammatory changes. 2005 Blackwell Publishing Journal Backfiles 1879-2005 |2005|||||||||| glial cells Rose, Sarah verfasserin aut Jenner, Peter verfasserin aut In European journal of neuroscience Oxford [u.a.] : Blackwell, 1989 21(2005), 7, Seite 0 Online-Ressource (DE-627)NLEJ243926383 (DE-600)2005178-5 1460-9568 nnns volume:21 year:2005 number:7 pages:0 http://dx.doi.org/10.1111/j.1460-9568.2005.04009.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 21 2005 7 0 |
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10.1111/j.1460-9568.2005.04009.x doi (DE-627)NLEJ242411584 DE-627 ger DE-627 rakwb Iczkiewicz, Joanna verfasserin aut Increased osteopontin expression following intranigral lipopolysaccharide injection in the rat Oxford, UK Blackwell Science Ltd 2005 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Nigral cell death in Parkinson's disease is characterized by glial cell activation leading to inflammatory changes. Osteopontin (OPN) is a glycosylated phosphoprotein that is induced by inflammatory mediators and which we have previously shown to be present in the substantia nigra. However, the role of OPN in the nigral inflammation is not known. We now report on the effects of lipopolysaccharide (LPS)-induced glial cell activation in the substantia nigra of rats on OPN expression. LPS administration induced dopaminergic cell death as shown by reduced nigral tyrosine hydroxylase immunoreactivity. There was a corresponding time-dependent increase in both OPN mRNA, which was maximal at 48 h, and protein levels, which peaked at 72 h before returning to control levels by 120 h. This increase was accompanied by marked reactive gliosis as shown by increased OX-42, glial fibrillary acidic protein (GFAP) and ED1 immunoreactivity. OX-42-positive cells increased in a time-dependent manner, peaking at 72 h before returning to control levels at 120 h. Similarly, ED1-positive cells were present in their greatest numbers at 24 h but then gradually declined. These changes mirrored the alterations occurring in OPN protein and OPN mRNA, respectively. In contrast, GFAP-positive cells only started to increase in number at 120 h. Colocalization studies showed that OPN was present in both ED1- and OX-42-positive cells but not in GFAP-positive cells. These data confirm that intranigral injection of LPS induces a rapid and marked gliosis that accompanies the loss of tyrosine hydroxylase-positive neurones and suggest that, after glial cell activation, enhanced expression of OPN occurs linked to increased numbers of microglia and/or macrophages. This suggests that OPN may be functionally important in the control of inflammatory changes. 2005 Blackwell Publishing Journal Backfiles 1879-2005 |2005|||||||||| glial cells Rose, Sarah verfasserin aut Jenner, Peter verfasserin aut In European journal of neuroscience Oxford [u.a.] : Blackwell, 1989 21(2005), 7, Seite 0 Online-Ressource (DE-627)NLEJ243926383 (DE-600)2005178-5 1460-9568 nnns volume:21 year:2005 number:7 pages:0 http://dx.doi.org/10.1111/j.1460-9568.2005.04009.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 21 2005 7 0 |
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10.1111/j.1460-9568.2005.04009.x doi (DE-627)NLEJ242411584 DE-627 ger DE-627 rakwb Iczkiewicz, Joanna verfasserin aut Increased osteopontin expression following intranigral lipopolysaccharide injection in the rat Oxford, UK Blackwell Science Ltd 2005 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Nigral cell death in Parkinson's disease is characterized by glial cell activation leading to inflammatory changes. Osteopontin (OPN) is a glycosylated phosphoprotein that is induced by inflammatory mediators and which we have previously shown to be present in the substantia nigra. However, the role of OPN in the nigral inflammation is not known. We now report on the effects of lipopolysaccharide (LPS)-induced glial cell activation in the substantia nigra of rats on OPN expression. LPS administration induced dopaminergic cell death as shown by reduced nigral tyrosine hydroxylase immunoreactivity. There was a corresponding time-dependent increase in both OPN mRNA, which was maximal at 48 h, and protein levels, which peaked at 72 h before returning to control levels by 120 h. This increase was accompanied by marked reactive gliosis as shown by increased OX-42, glial fibrillary acidic protein (GFAP) and ED1 immunoreactivity. OX-42-positive cells increased in a time-dependent manner, peaking at 72 h before returning to control levels at 120 h. Similarly, ED1-positive cells were present in their greatest numbers at 24 h but then gradually declined. These changes mirrored the alterations occurring in OPN protein and OPN mRNA, respectively. In contrast, GFAP-positive cells only started to increase in number at 120 h. Colocalization studies showed that OPN was present in both ED1- and OX-42-positive cells but not in GFAP-positive cells. These data confirm that intranigral injection of LPS induces a rapid and marked gliosis that accompanies the loss of tyrosine hydroxylase-positive neurones and suggest that, after glial cell activation, enhanced expression of OPN occurs linked to increased numbers of microglia and/or macrophages. This suggests that OPN may be functionally important in the control of inflammatory changes. 2005 Blackwell Publishing Journal Backfiles 1879-2005 |2005|||||||||| glial cells Rose, Sarah verfasserin aut Jenner, Peter verfasserin aut In European journal of neuroscience Oxford [u.a.] : Blackwell, 1989 21(2005), 7, Seite 0 Online-Ressource (DE-627)NLEJ243926383 (DE-600)2005178-5 1460-9568 nnns volume:21 year:2005 number:7 pages:0 http://dx.doi.org/10.1111/j.1460-9568.2005.04009.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 21 2005 7 0 |
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10.1111/j.1460-9568.2005.04009.x doi (DE-627)NLEJ242411584 DE-627 ger DE-627 rakwb Iczkiewicz, Joanna verfasserin aut Increased osteopontin expression following intranigral lipopolysaccharide injection in the rat Oxford, UK Blackwell Science Ltd 2005 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Nigral cell death in Parkinson's disease is characterized by glial cell activation leading to inflammatory changes. Osteopontin (OPN) is a glycosylated phosphoprotein that is induced by inflammatory mediators and which we have previously shown to be present in the substantia nigra. However, the role of OPN in the nigral inflammation is not known. We now report on the effects of lipopolysaccharide (LPS)-induced glial cell activation in the substantia nigra of rats on OPN expression. LPS administration induced dopaminergic cell death as shown by reduced nigral tyrosine hydroxylase immunoreactivity. There was a corresponding time-dependent increase in both OPN mRNA, which was maximal at 48 h, and protein levels, which peaked at 72 h before returning to control levels by 120 h. This increase was accompanied by marked reactive gliosis as shown by increased OX-42, glial fibrillary acidic protein (GFAP) and ED1 immunoreactivity. OX-42-positive cells increased in a time-dependent manner, peaking at 72 h before returning to control levels at 120 h. Similarly, ED1-positive cells were present in their greatest numbers at 24 h but then gradually declined. These changes mirrored the alterations occurring in OPN protein and OPN mRNA, respectively. In contrast, GFAP-positive cells only started to increase in number at 120 h. Colocalization studies showed that OPN was present in both ED1- and OX-42-positive cells but not in GFAP-positive cells. These data confirm that intranigral injection of LPS induces a rapid and marked gliosis that accompanies the loss of tyrosine hydroxylase-positive neurones and suggest that, after glial cell activation, enhanced expression of OPN occurs linked to increased numbers of microglia and/or macrophages. This suggests that OPN may be functionally important in the control of inflammatory changes. 2005 Blackwell Publishing Journal Backfiles 1879-2005 |2005|||||||||| glial cells Rose, Sarah verfasserin aut Jenner, Peter verfasserin aut In European journal of neuroscience Oxford [u.a.] : Blackwell, 1989 21(2005), 7, Seite 0 Online-Ressource (DE-627)NLEJ243926383 (DE-600)2005178-5 1460-9568 nnns volume:21 year:2005 number:7 pages:0 http://dx.doi.org/10.1111/j.1460-9568.2005.04009.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 21 2005 7 0 |
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Increased osteopontin expression following intranigral lipopolysaccharide injection in the rat |
| abstract |
Nigral cell death in Parkinson's disease is characterized by glial cell activation leading to inflammatory changes. Osteopontin (OPN) is a glycosylated phosphoprotein that is induced by inflammatory mediators and which we have previously shown to be present in the substantia nigra. However, the role of OPN in the nigral inflammation is not known. We now report on the effects of lipopolysaccharide (LPS)-induced glial cell activation in the substantia nigra of rats on OPN expression. LPS administration induced dopaminergic cell death as shown by reduced nigral tyrosine hydroxylase immunoreactivity. There was a corresponding time-dependent increase in both OPN mRNA, which was maximal at 48 h, and protein levels, which peaked at 72 h before returning to control levels by 120 h. This increase was accompanied by marked reactive gliosis as shown by increased OX-42, glial fibrillary acidic protein (GFAP) and ED1 immunoreactivity. OX-42-positive cells increased in a time-dependent manner, peaking at 72 h before returning to control levels at 120 h. Similarly, ED1-positive cells were present in their greatest numbers at 24 h but then gradually declined. These changes mirrored the alterations occurring in OPN protein and OPN mRNA, respectively. In contrast, GFAP-positive cells only started to increase in number at 120 h. Colocalization studies showed that OPN was present in both ED1- and OX-42-positive cells but not in GFAP-positive cells. These data confirm that intranigral injection of LPS induces a rapid and marked gliosis that accompanies the loss of tyrosine hydroxylase-positive neurones and suggest that, after glial cell activation, enhanced expression of OPN occurs linked to increased numbers of microglia and/or macrophages. This suggests that OPN may be functionally important in the control of inflammatory changes. |
| abstractGer |
Nigral cell death in Parkinson's disease is characterized by glial cell activation leading to inflammatory changes. Osteopontin (OPN) is a glycosylated phosphoprotein that is induced by inflammatory mediators and which we have previously shown to be present in the substantia nigra. However, the role of OPN in the nigral inflammation is not known. We now report on the effects of lipopolysaccharide (LPS)-induced glial cell activation in the substantia nigra of rats on OPN expression. LPS administration induced dopaminergic cell death as shown by reduced nigral tyrosine hydroxylase immunoreactivity. There was a corresponding time-dependent increase in both OPN mRNA, which was maximal at 48 h, and protein levels, which peaked at 72 h before returning to control levels by 120 h. This increase was accompanied by marked reactive gliosis as shown by increased OX-42, glial fibrillary acidic protein (GFAP) and ED1 immunoreactivity. OX-42-positive cells increased in a time-dependent manner, peaking at 72 h before returning to control levels at 120 h. Similarly, ED1-positive cells were present in their greatest numbers at 24 h but then gradually declined. These changes mirrored the alterations occurring in OPN protein and OPN mRNA, respectively. In contrast, GFAP-positive cells only started to increase in number at 120 h. Colocalization studies showed that OPN was present in both ED1- and OX-42-positive cells but not in GFAP-positive cells. These data confirm that intranigral injection of LPS induces a rapid and marked gliosis that accompanies the loss of tyrosine hydroxylase-positive neurones and suggest that, after glial cell activation, enhanced expression of OPN occurs linked to increased numbers of microglia and/or macrophages. This suggests that OPN may be functionally important in the control of inflammatory changes. |
| abstract_unstemmed |
Nigral cell death in Parkinson's disease is characterized by glial cell activation leading to inflammatory changes. Osteopontin (OPN) is a glycosylated phosphoprotein that is induced by inflammatory mediators and which we have previously shown to be present in the substantia nigra. However, the role of OPN in the nigral inflammation is not known. We now report on the effects of lipopolysaccharide (LPS)-induced glial cell activation in the substantia nigra of rats on OPN expression. LPS administration induced dopaminergic cell death as shown by reduced nigral tyrosine hydroxylase immunoreactivity. There was a corresponding time-dependent increase in both OPN mRNA, which was maximal at 48 h, and protein levels, which peaked at 72 h before returning to control levels by 120 h. This increase was accompanied by marked reactive gliosis as shown by increased OX-42, glial fibrillary acidic protein (GFAP) and ED1 immunoreactivity. OX-42-positive cells increased in a time-dependent manner, peaking at 72 h before returning to control levels at 120 h. Similarly, ED1-positive cells were present in their greatest numbers at 24 h but then gradually declined. These changes mirrored the alterations occurring in OPN protein and OPN mRNA, respectively. In contrast, GFAP-positive cells only started to increase in number at 120 h. Colocalization studies showed that OPN was present in both ED1- and OX-42-positive cells but not in GFAP-positive cells. These data confirm that intranigral injection of LPS induces a rapid and marked gliosis that accompanies the loss of tyrosine hydroxylase-positive neurones and suggest that, after glial cell activation, enhanced expression of OPN occurs linked to increased numbers of microglia and/or macrophages. This suggests that OPN may be functionally important in the control of inflammatory changes. |
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GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE |
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7 |
| title_short |
Increased osteopontin expression following intranigral lipopolysaccharide injection in the rat |
| url |
http://dx.doi.org/10.1111/j.1460-9568.2005.04009.x |
| remote_bool |
true |
| author2 |
Rose, Sarah Jenner, Peter |
| author2Str |
Rose, Sarah Jenner, Peter |
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| doi_str |
10.1111/j.1460-9568.2005.04009.x |
| up_date |
2024-07-06T01:53:24.284Z |
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7.400339 |