Proteomic identification of biomarkers in the cerebrospinal fluid in a rat model of nigrostriatal dopaminergic degeneration
Identifieur interne : 000F75 ( Main/Exploration ); précédent : 000F74; suivant : 000F76Proteomic identification of biomarkers in the cerebrospinal fluid in a rat model of nigrostriatal dopaminergic degeneration
Auteurs : I. Rite [Espagne] ; S. Argüelles [Espagne] ; J. L. Venero [Espagne] ; S. García-Rodriguez [Espagne] ; A. Ayala [Espagne] ; J. Cano [Espagne] ; A. Machado [Espagne]Source :
- Journal of Neuroscience Research [ 0360-4012 ] ; 2007-12.
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Abstract
We have performed proteomic analysis in the cerebrospinal fluid in an animal model of Parkinson's disease induced by axotomy of the medial forebrain bundle. In this model, the degeneration of dopaminergic neurons was completed in 14 days, with a loss of about 50% dopaminergic neurons in the substantia nigra and a loss of more than 80% dopamine terminals in the striatum, with a similar diminution of dopamine levels in both structures. Proteins were separated by 2D electrophoresis and identified by matrix‐assisted laser desorption‐ionization time‐of‐flight (MALDI‐TOF). We found significant increases of haptoglobin and transthyretin along with a decrease of Apo E concentrations in the cerebrospinal fluid of axotomized animals. Changes for haptoglobin and transthyretin were further confirmed in cerebrospinal fluid and plasma by Western blotting. These results suggest that monitoring plasma levels of these signals appears to be a promising biological marker of neuronal degeneration of the nigrostriatal dopaminergic system. © 2007 Wiley‐Liss, Inc.
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DOI: 10.1002/jnr.21452
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Res.</title><idno type="ISSN">0360-4012</idno><idno type="eISSN">1097-4547</idno><imprint><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><date type="published" when="2007-12">2007-12</date><biblScope unit="volume">85</biblScope><biblScope unit="issue">16</biblScope><biblScope unit="page" from="3607">3607</biblScope><biblScope unit="page" to="3618">3618</biblScope></imprint><idno type="ISSN">0360-4012</idno></series><idno type="istex">7F42656875D095ED85E1A62CAA33FBAAC3E3BDAC</idno><idno type="DOI">10.1002/jnr.21452</idno><idno type="ArticleID">JNR21452</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0360-4012</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Apo E</term><term>Parkinson's disease</term><term>axotomy</term><term>haptoglobin</term><term>nigrostriatal dopaminergic system</term><term>proteome</term><term>rat cerebrospinal fluid</term><term>substantia nigra</term><term>transthyretin</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We have performed proteomic analysis in the cerebrospinal fluid in an animal model of Parkinson's disease induced by axotomy of the medial forebrain bundle. In this model, the degeneration of dopaminergic neurons was completed in 14 days, with a loss of about 50% dopaminergic neurons in the substantia nigra and a loss of more than 80% dopamine terminals in the striatum, with a similar diminution of dopamine levels in both structures. Proteins were separated by 2D electrophoresis and identified by matrix‐assisted laser desorption‐ionization time‐of‐flight (MALDI‐TOF). We found significant increases of haptoglobin and transthyretin along with a decrease of Apo E concentrations in the cerebrospinal fluid of axotomized animals. Changes for haptoglobin and transthyretin were further confirmed in cerebrospinal fluid and plasma by Western blotting. 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