title: Effect of human interleukin-10 on the expression of nitric oxide synthases in the MPTP-based model of Parkinson's disease.
abstract: BACKGROUND
  Parkinson's disease (PD) is the second most common progressive neurodegenerative disorder. The degeneration of the nigro-striatal pathway has been linked with the inflammatory process accompanied by the robust up-regulation of the nitric oxide synthase (NOS) and production of the neurotoxic level of nitric oxide (NO). One of the therapeutic strategies of PD is based on the reduction of the detrimental neuroinflammatory markers in the lesioned nigro-striatal pathway. In this study we have investigated the neuroprotective effect of the cerebral infusion of recombinant adeno-associated viral vector, expressing the gene for human interleukin-10 (AAV2-hIL-10) in a mouse model of PD induced by 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP). It is known that IL-10 is a potent anti-inflammatory cytokine that limits the inducible nitric oxide synthase (iNOS) gene expression.
  
  
  METHODS
  The striatal iNOS, neuronal nitric oxide synthase (nNOS) and tyrosine hydroxylase (TH) protein expression was evaluated by immunoblot analysis.
  
  
  RESULTS
  The intracerebral injection of the AAV2-hIL-10, before the lesion, induced the upregulation of the striatal TH protein, depleted by MPTP intoxication. This AAV2-hIL-10-induced increase of TH level was associated with the suppression of iNOS protein expression in the lesioned striatum.
  
  
  CONCLUSIONS
  The results revealed protective properties of AAV2-hIL-10.
authors.affiliation: Department of Experimental and Clinical Pharmacology, Medical University of Warsaw, Krakowskie Przedmieście 26/28, PL 00-927, Warszawa, Poland.
authors.forename: Joanna
authors.initials: J
authors.lastname: Schwenkgrub
authors.forename: Ilona
authors.initials: I
authors.lastname: Joniec-Maciejak
authors.forename: Anna
authors.initials: A
authors.lastname: Sznejder-Pachołek
authors.forename: Adriana
authors.initials: A
authors.lastname: Wawer
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Ciesielska
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Bankiewicz
authors.forename: Anna
authors.initials: A
authors.lastname: Członkowska
authors.forename: Andrzej
authors.initials: A
authors.lastname: Członkowski
mesh_terms: D000818:Animals; D015153:Blotting, Western; D000229:Dependovirus / Q000235:genetics; D004195:Disease Models, Animal; D005822:Genetic Vectors; D006801:Humans; D016753:Interleukin-10 / Q000235:genetics*; D020267:MPTP Poisoning / Q000503:physiopathology; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D009569:Nitric Oxide / Q000378:metabolism; D052248:Nitric Oxide Synthase Type I / Q000235:genetics; D052247:Nitric Oxide Synthase Type II / Q000235:genetics*; D020734:Parkinsonian Disorders / Q000201:enzymology / Q000235:genetics* / Q000503:physiopathology; D014446:Tyrosine 3-Monooxygenase / Q000235:genetics*; D015854:Up-Regulation
chemical_list: D016753:Interleukin-10; D009569:Nitric Oxide; D052248:Nitric Oxide Synthase Type I; D052247:Nitric Oxide Synthase Type II; D014446:Tyrosine 3-Monooxygenase