Trehalose Neuroprotective Effects on the Substantia Nigra Dopaminergic Cells by Activating Autophagy and Non-canonical Nrf2 Pathways

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DARABI SHAHRAM; NOORI ZADEH ALI; ABBASZADEH HOJJAT ALLAH; RAJAEI FARZAD; BAKHTIYARI SALAR

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Journal Paper

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Journal: Iranian Journal of Pharmaceutical Research Year:2019 | Volume:18 | Issue:3 Page(s): 1419-1428

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Title

Trehalose Neuroprotective Effects on the Substantia Nigra Dopaminergic Cells by Activating Autophagy and Non-canonical Nrf2 Pathways

Author(s)

Keywords

Autophagy

Non-canonical Nrf2 pathway

p62

Parkinson′

s disease

Trehalose

Abstract

Trehalose, as a natural disaccharide, is known as an Autophagy inducer. The neuroprotective effects of Trehalose in the rat model of Parkinson′; s disease were the aim of the present study. Parkinson′; s disease model was induced by injecting 6-hydroxydopamine (6-OHDA) in the striatum of male Wistar rats. Apomorphine-induced behavior and substantia nigra neuronal counts were applied to evaluate the neuroprotective effects of Trehalose. The Autophagy was studied using the expression of p62 and LC3II/LC3I ratio. In addition, the antioxidant effects of Trehalose were assessed by analyzing the levels of nuclear factor (erythroid-derived 2)-like 2 (Nrf2) and also glutathione reductase (GR), glutathione peroxidase (GPx) and Catalase (CAT) enzymes. Moreover, the levels of 3, 4-dihydroxyphenylacetic acid (DOPAC) and dopamine (DA) were assessed. The behavioral test showed that Trehalose in the treatment group reduced the damage to the substantial nigra dopaminergic neurons, which was characterized by improved motor and reduced rotations in the treatment group as compared with the lesion group. In the histological examinations of the treatment group, Trehalose prevented the destruction of dopaminergic neurons. Trehalose treatments increased Autophagy (high LC3II/ LC3I ratio) and the expression of the p62 protein as well. Through p62-dependent manner, it led to increased nuclear translocation of Nrf2 transcription factor and elevated expression of downstream antioxidant enzymes, such as GR, GPx, and CAT, restoring DA and DOPAC contents of the cells. In the current study, Trehalose simultaneously protects substantia nigra dopaminergic cells by activating both non-canonical p62/SQSTM1-Keap1-Nrf2 and Autophagy pathways.

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APA: Copy

DARABI, SHAHRAM, NOORI ZADEH, ALI, ABBASZADEH, HOJJAT ALLAH, RAJAEI, FARZAD, & BAKHTIYARI, SALAR. (2019). Trehalose Neuroprotective Effects on the Substantia Nigra Dopaminergic Cells by Activating Autophagy and Non-canonical Nrf2 Pathways. IRANIAN JOURNAL OF PHARMACEUTICAL RESEARCH (IJPR), 18(3), 1419-1428. SID. https://sid.ir/paper/289177/en

Vancouver: Copy

DARABI SHAHRAM, NOORI ZADEH ALI, ABBASZADEH HOJJAT ALLAH, RAJAEI FARZAD, BAKHTIYARI SALAR. Trehalose Neuroprotective Effects on the Substantia Nigra Dopaminergic Cells by Activating Autophagy and Non-canonical Nrf2 Pathways. IRANIAN JOURNAL OF PHARMACEUTICAL RESEARCH (IJPR)[Internet]. 2019;18(3):1419-1428. Available from: https://sid.ir/paper/289177/en

IEEE: Copy

SHAHRAM DARABI, ALI NOORI ZADEH, HOJJAT ALLAH ABBASZADEH, FARZAD RAJAEI, and SALAR BAKHTIYARI, “Trehalose Neuroprotective Effects on the Substantia Nigra Dopaminergic Cells by Activating Autophagy and Non-canonical Nrf2 Pathways,” IRANIAN JOURNAL OF PHARMACEUTICAL RESEARCH (IJPR), vol. 18, no. 3, pp. 1419–1428, 2019, [Online]. Available: https://sid.ir/paper/289177/en

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