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2011 | 71 | 1 |
Tytuł artykułu

Expression of purinergic P2X(7) receptor in rat brain during the symptomatic phase of experimental autoimmune encephalomyelitis and after recovery of neurological deficits

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Języki publikacji
EN
Abstrakty
EN
Purinergic ionotropic P2X7 receptor is widely distributed in brain. Strong evidence suggests that this receptor is related to inflammatory and neurodegenerative changes in many pathological states of central nervous system (CNS), including multiple sclerosis (MS). Experimental autoimmune encephalomyelitis (EAE) is the commonly used animal model of MS. In this study we investigate the expression of P2X7R protein in rat brain in the symptomatic phase of EAE (day 10 post immunization) and after reversion of neurological symptoms (day 20 p.i.). We found the increased level of P2X7R protein in brain homogenates of EAE rats in both examined time windows. Immunohistochemical study revealed enhanced receptor's immunoreactivity. Immunoblots done with isolated cellular brain fractions indicated that the P2X7R overexpression is related to synaptosomal fraction in the symptomatic phase and to the glial (GPV) fraction in the recovery phase of EAE. Concomitantly, we noticed overexpression of astroglial marker GFAP in brain homogenates and astroglial fraction (GPV), so as its enhanced immunoreactivity in brain sections (10 days p.i.) which did not decline to control values in the recovery phase, similarly to P2X7R expression. Results suggest the involvement of P2X7R-mediated signaling in the pathomechanisms of EAE with the possible relevance of astrocytic pool of cells.
Słowa kluczowe
Wydawca
-
Rocznik
Tom
71
Numer
1
Opis fizyczny
p.65-73,fig.,ref.
Twórcy
  • Laboratory of Pathoneurochemistry, Mossakowski Medical Research Centre, Department of Neurochemistry, Polish Academy of Sciences, Warsaw, Poland
autor
  • Mossakowski Medical Research Centre, Department of Experimental Pharmacology, Polish Academy of Sciences, Warsaw, Poland
  • Laboratory of Pathoneurochemistry, Mossakowski Medical Research Centre, Department of Neurochemistry, Polish Academy of Sciences, Warsaw, Poland
Bibliografia
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Bibliografia
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