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Intranasal administ...
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Gruden, Marina A
(författare)
Intranasal administration of alpha-synuclein aggregates : a Parkinson's disease model with behavioral and neurochemical correlates
- Artikel/kapitelEngelska2014
Förlag, utgivningsår, omfång ...
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Elsevier,2014
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printrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:umu-88668
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https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-88668URI
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https://doi.org/10.1016/j.bbr.2014.01.017DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
Anmärkningar
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Parkinson's disease (PD) is a neurodegenerative disorder in which both alpha-synuclein (alpha-syn) and dopamine (DA) have a critical role. Our previous studies instigated a novel PD model based on nasal inoculation with alpha-syn aggregates which expressed parkinsonian-like behavioral and immunological features. The current study in mice substantiated the robustness of the amyloid nasal vector model by examining behavioral consequences with respect to DA-ergic neurochemical corollaries. In vitro generated alpha-syn oligomers and fibrils were characterized using atomic force microscopy and the thioflavin T binding assay. These toxic oligomers or fibrils administered alone (0.48 mg/kg) or their 50:50 combination (total dose of 0.48 mg/kg) were given intranasally for 14 days and "open-field" behavior was tested on days 0, 15 and 28 of the protocol. Behavioral deficits at the end of the 14-day dosing regime and on day 28 (i.e., 14 days after treatment completion) induced rigidity, hypokinesia and immobility. This was accompanied by elevated nigral but not striatal DA, DOPAC and HVA concentrations in response to dual administration of alpha-syn oligomers plus fibrils but not the oligomers by themselves. alpha-Syn fibrils intensified not only the hypokinesia and immobility 14 days post treatment, but also reduced vertical rearing and enhanced DA levels in the substantia nigra. Only nigral DA turnover (DOPAC/DA but not HVA/DA ratio) was augmented in response to fibril treatment but there were no changes in the striatum. Compilation of these novel behavioral and neurochemical findings substantiate the validity of the alpha-syn nasal vector model for investigating parkinsonian-like symptoms.(C) 2014 Elsevier B.V. All rights reserved.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Davydova, Tatiana V
(författare)
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Narkevich, Victor B
(författare)
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Fomina, Valentina G
(författare)
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Wang, ChaoUmeå universitet,Institutionen för medicinsk kemi och biofysik(Swepub:umu)chwa0028
(författare)
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Kudrin, Vladimir S
(författare)
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Morozova-Roche, Ludmilla AUmeå universitet,Institutionen för medicinsk kemi och biofysik(Swepub:umu)lumo0001
(författare)
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Sewell, Robert DE
(författare)
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Umeå universitetInstitutionen för medicinsk kemi och biofysik
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Behavioural Brain Research: Elsevier263, s. 158-1680166-43281872-7549
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