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2009 | 63 | 4 | 39-45
Article title

Zawartość 5-hydroksytryptaminy w mózgu szczurów z równoczesną lezją ośrodkowego układu dopaminergicznego i noradrenergicznego

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Title variants
EN
5-Hydroxytryptamine level in the brain of rats after simultaneous lesion of the central dopaminergic and noradrenergic system
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PL
Abstracts
EN
BACKGROUND Rats lesioned shortly after birth with 6-OHDA (neurotoxin for the central dopaminergic system) have been proposed to be a near-ideal model of severe Parkinson’s disease, because of non-lethality of the procedure, near-total destruction of nigrostriatal dopaminergic fi bres and near-total dopamine (DA) denervation of striatum. In such rodent model of Parkinson’s disease increase of serotoninergic system in the brain of adult rats was observed. The aim of presented study was to examine the central serotoninergic system in adult rats simultaneously lesioned with central dopaminergic (using 6-OHDA) and noradrenergic system (using DSP-4). MATERIAL AND METHODS Newborn male Wistar rats were injected on the day 1st and 3rd of life with DSP-4 (neurotoxin for noradrenergic system) 50.0 mg/kg SC, and on the day 3rd with 6-OHDA 134 μg ICV. Separately and concomitantly. In adult animals the level of biogenic amines in the brain was estimated by HPLC/ED technique. RESULTS It was shown that in rats lesioned as neonates with 6-OHDA increase of 5-HT and its metabolite 5-HIAA was observed in the brain of adult rats. Simultaneous lesion of the central dopaminergic and noradrenergic system induce further increase in the level of indole amines in the brain of adult rats. CONCLUSIONS Simultaneous lesion of the central dopaminergic and noradrenergic system of rats as neonates increased activity of the central serotoninergic system which seems to be a substitute of the dopaminergic one.
PL
WSTĘP 6-OHDA, neurotoksyna ośrodkowego układu dopaminergicznego podana szczurzym noworodkom wywołuje trwałe uszkodzenie powyższego układu utrzymujące się przez całe życie zwierzęcia, które uznawane jest za zwierzęcy model choroby Parkinsona. Towarzyszy temu wzrost aktywności ośrodkowego układu serotoninergicznego. Celem niniejszych badań była ocena zmian układu serotoninergicznego u szczurów z równoczesną lezją ośrodkowego układu dopaminergicznego (podaniem 6-OHDA) oraz noradrenergicznego podaniem DSP-4 (neurotoksyny układu noradrenergicznego) . MATERIAŁ I METODY Szczurzym noworodkom samcom szczepu Wistar podano 1-go i 3-go dnia życia DSP-4 50.0 mg/kg SC oraz 3-go dnia życia 6-OHDA 134 μg ICV oddzielnie lub łącznie. U dorosłych zwierząt oznaczono zawartość amin biogennych w mózgu metodą HPLC/ED. WYNIKI Wykazano i potwierdzono, że u dorosłych szczurów z lezją ośrodkowego układu dopaminergicznego wykonaną w okresie noworodkowym dochodzi do wzrostu zawartości 5-HT i 5-HIAA w mózgu dorosłych szczurów. Równoczesna lezja ośrodkowego układu noradrenergicznego wykonana podaniem noworodkom DSP-4 powoduje dalszy wzrost zawartości badanych amin indolowych w mózgu dorosłych szczurów. WNIOSKI: Łączne podanie 6-OHDA i DSP-4 (neurotoksyny układu dopaminergicznego i noradrenergicznego) noworodkom powoduje nasilenie aktywności ośrodkowego układu serotoninergicznego u dorosłych szczurów, który wydaje się zastępować niedoczynny układ dopaminergiczny.
Keywords
Discipline
Year
Volume
63
Issue
4
Pages
39-45
Physical description
References
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article
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bwmeta1.element.psjd-734023a2-fafd-4928-ad6e-40a80650ce0f
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