Lipoic acid alleviates L‑DOPA‑induced dyskinesia in 6‑OHDA parkinsonian rats via anti‑oxidative stress

Levodopa (L‑DOPA) is the gold standard for symptomatic treatment of Parkinson's disease (PD); however, long‑term therapy is associated with the emergence of L‑DOPA‑induced dyskinesia (LID). Nigral dopaminergic cell loss determines the degree of drug exposure and time required for the initial onset of LID. Accumulating evidence indicates that α‑lipoic acid (ALA) decreases this nigral dopaminergic cell loss. However, until now, the precise mechanisms of ALA have only been partially understood in LID. Chronic L‑DOPA treatment was demonstrated to develop intense AIM scores to assess dyskinetic symptoms. Rats in the LID group were administrated twice daily with L‑DOPA + benserazide for 3 weeks to induce a rat model of dyskinesia. Moreover, other 6‑OHDA‑lesioned rats were treatment with ALA (31.5 mg/kg or 63 mg/kg) in combination with L‑DOPA treatment. Furthermore, the authors investigated the level of malondialdehyde (MDA) and glutathione (GSH) activity, as well as IBa‑1, caspase‑3 and poly (ADP-ribose) polymerase (PARP) in substantia nigra by the way of western blotting and immunofluorescence. ALA reduced LID in a dose‑dependent manner without compromising the anti‑PD effect of L‑DOPA. Moreover, ALA reduced the level of MDA and upregulated the GSH activity, as well as ameliorated IBa‑1 positive neurons in the substantia nigra. Finally, it was identified that ALA could reduce L‑DOPA‑induced cleaved‑caspase‑3 and PARP overexpression in the substantia nigra. Based on the present findings, ALA could be recommended as a promising disease‑modifying therapy when administered with L‑DOPA early in the course of PD. The exact mechanism for this action, although incompletely understood, appears to relate to anti‑oxidative stress and anti‑apoptosis.

Medienart:

E-Artikel

Erscheinungsjahr:

2018

Erschienen:

2018

Enthalten in:

Zur Gesamtaufnahme - volume:17

Enthalten in:

Molecular medicine reports - 17(2018), 1 vom: 22. Jan., Seite 1118-1124

Sprache:

Englisch

Beteiligte Personen:

Zhang, Su-Fang [VerfasserIn]
Xie, Cheng-Long [VerfasserIn]
Lin, Jing-Ya [VerfasserIn]
Wang, Mei-Hua [VerfasserIn]
Wang, Xi-Jin [VerfasserIn]
Liu, Zhen-Guo [VerfasserIn]

Links:

Volltext

Themen:

46627O600J
73Y7P0K73Y
Antioxidants
Caspase 3
EC 2.4.2.30
EC 3.4.22.-
Journal Article
Levodopa
Poly(ADP-ribose) Polymerases
Reactive Oxygen Species
Thioctic Acid

Anmerkungen:

Date Completed 05.07.2018

Date Revised 05.07.2018

published: Print-Electronic

Citation Status MEDLINE

doi:

10.3892/mmr.2017.7974

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM277824621