TY - JOUR T1 - Neuroprotective effects of the gliopeptide ODN in an in vivo model of Parkinson's disease. AU - Bahdoudi,Seyma, AU - Ghouili,Ikram, AU - Hmiden,Mansour, AU - do Rego,Jean-Luc, AU - Lefranc,Benjamin, AU - Leprince,Jérôme, AU - Chuquet,Julien, AU - do Rego,Jean-Claude, AU - Marcher,Ann-Britt, AU - Mandrup,Susanne, AU - Vaudry,Hubert, AU - Tonon,Marie-Christine, AU - Amri,Mohamed, AU - Masmoudi-Kouki,Olfa, AU - Vaudry,David, Y1 - 2017/12/20/ PY - 2017/07/07/received PY - 2017/12/05/accepted PY - 2017/11/13/revised PY - 2017/12/22/pubmed PY - 2018/11/14/medline PY - 2017/12/22/entrez KW - Inflammation and oxidative response KW - MPTP KW - Neurodegeneration KW - Neuropeptide ODN KW - Neuroprotection KW - Parkinson’s disease SP - 2075 EP - 2091 JF - Cellular and molecular life sciences : CMLS JO - Cell Mol Life Sci VL - 75 IS - 11 N2 - Parkinson's disease (PD) is a neurodegenerative disorder characterized by a progressive loss of dopamine (DA) neurons through apoptotic, inflammatory and oxidative stress mechanisms. The octadecaneuropeptide (ODN) is a diazepam-binding inhibitor (DBI)-derived peptide, expressed by astrocytes, which protects neurons against oxidative cell damages and apoptosis in an in vitro model of PD. The present study reveals that a single intracerebroventricular injection of 10 ng ODN 1 h after the last administration of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) prevented the degeneration of DA neurons induced by the toxin in the substantia nigra pars compacta of mice, 7 days after treatment. ODN-mediated neuroprotection was associated with a reduction of the number of glial fibrillary acidic protein-positive reactive astrocytes and a strong inhibition of the expression of pro-inflammatory genes such as interleukins 1β and 6, and tumor necrosis factor-α. Moreover, ODN blocked the inhibition of the anti-apoptotic gene Bcl-2, and the stimulation of the pro-apoptotic genes Bax and caspase-3, induced by MPTP in the substantia nigra pars compacta. ODN also decreased or even in some cases abolished MPTP-induced oxidative damages, overproduction of reactive oxygen species and accumulation of lipid oxidation products in DA neurons. Furthermore, DBI knockout mice appeared to be more vulnerable than wild-type animals to MPTP neurotoxicity. Taken together, these results show that the gliopeptide ODN exerts a potent neuroprotective effect against MPTP-induced degeneration of nigrostriatal DA neurons in mice, through mechanisms involving downregulation of neuroinflammatory, oxidative and apoptotic processes. ODN may, thus, reduce neuronal damages in PD and other cerebral injuries involving oxidative neurodegeneration. SN - 1420-9071 UR - https://www.unboundmedicine.com/medline/citation/29264673/Neuroprotective_effects_of_the_gliopeptide_ODN_in_an_in_vivo_model_of_Parkinson's_disease_ DB - PRIME DP - Unbound Medicine ER -