PMID- 32848705 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200928 IS - 1663-4365 (Print) IS - 1663-4365 (Electronic) IS - 1663-4365 (Linking) VI - 12 DP - 2020 TI - Lactulose and Melibiose Attenuate MPTP-Induced Parkinson's Disease in Mice by Inhibition of Oxidative Stress, Reduction of Neuroinflammation and Up-Regulation of Autophagy. PG - 226 LID - 10.3389/fnagi.2020.00226 [doi] LID - 226 AB - Parkinson's disease (PD) is a common neurodegenerative disease characterized by the progressive loss of dopaminergic (DAergic) neurons in the ventral brain. A disaccharide trehalose has demonstrated the potential to mitigate the DAergic loss in disease models for PD. However, trehalose is rapidly hydrolyzed into glucose by trehalase in the intestine, limiting its potential for clinical practice. Here, we investigated the neuroprotective potential of two trehalase-indigestible analogs, lactulose and melibiose, in sub-chronic 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced mouse model of PD. Treatment with MPTP generated significant motor deficits, inhibited dopamine levels, and down-regulated dopamine transporter (DAT) in the striatum. Expression levels of genes involved in anti-oxidative stress pathways, including superoxide dismutase 2 (SOD2), nuclear factor erythroid 2-related factor 2 (NRF2), and NAD(P)H dehydrogenase (NQO1) were also down-regulated. Meanwhile, expression of the oxidative stress marker 4-hydroxynonenal (4-HNE) was up-regulated along with increased microglia and astrocyte reactivity in the ventral midbrain following MPTP treatment. MPTP also reduced the activity of autophagy, evaluated by the autophagosomal marker microtubule-associated protein 1 light chain 3 (LC3)-II. Lactulose and melibiose significantly rescued motor deficits, increased dopamine in the striatum, reduced microglia and astrocyte reactivity as well as decreased levels of 4-HNE. Furthermore, lactulose and melibiose up-regulated SOD2, NRF2, and NQO1 levels, as well as enhanced the LC3-II/LC3-I ratio in the ventral midbrain with MPTP treatment. Our findings indicate the potential of lactulose and melibiose to protect DAergic neurons in PD. CI - Copyright (c) 2020 Lin, Wei, Chen, Huang, Lin, Lo, Lin, Lin, Wu, Chang and Lee-Chen. FAU - Lin, Chih-Hsin AU - Lin CH AD - Department of Neurology, Chang-Gung Memorial Hospital, Chang-Gung University College of Medicine, Taoyuan, Taiwan. FAU - Wei, Pei-Cih AU - Wei PC AD - Department of Neurology, Chang-Gung Memorial Hospital, Chang-Gung University College of Medicine, Taoyuan, Taiwan. FAU - Chen, Chiung-Mei AU - Chen CM AD - Department of Neurology, Chang-Gung Memorial Hospital, Chang-Gung University College of Medicine, Taoyuan, Taiwan. FAU - Huang, Yu-Ting AU - Huang YT AD - Taipei First Girls High School, Taipei, Taiwan. FAU - Lin, Jia-Lan AU - Lin JL AD - Taipei First Girls High School, Taipei, Taiwan. FAU - Lo, Yen-Shi AU - Lo YS AD - Department of Neurology, Chang-Gung Memorial Hospital, Chang-Gung University College of Medicine, Taoyuan, Taiwan. FAU - Lin, Jia-Li AU - Lin JL AD - Department of Neurology, Chang-Gung Memorial Hospital, Chang-Gung University College of Medicine, Taoyuan, Taiwan. FAU - Lin, Chung-Yin AU - Lin CY AD - Medical Imaging Research Center, Institute for Radiological Research, Chang Gung University/Chang Gung Memorial Hospital, Taoyuan, Taiwan. FAU - Wu, Yih-Ru AU - Wu YR AD - Department of Neurology, Chang-Gung Memorial Hospital, Chang-Gung University College of Medicine, Taoyuan, Taiwan. FAU - Chang, Kuo-Hsuan AU - Chang KH AD - Department of Neurology, Chang-Gung Memorial Hospital, Chang-Gung University College of Medicine, Taoyuan, Taiwan. FAU - Lee-Chen, Guey-Jen AU - Lee-Chen GJ AD - Department of Life Science, National Taiwan Normal University, Taipei, Taiwan. LA - eng PT - Journal Article DEP - 20200724 PL - Switzerland TA - Front Aging Neurosci JT - Frontiers in aging neuroscience JID - 101525824 PMC - PMC7396622 OTO - NOTNLM OT - MPTP mice OT - Parkinson's disease OT - autophagy OT - lactulose and melibiose OT - neuroinflammation OT - oxidative stress EDAT- 2020/08/28 06:00 MHDA- 2020/08/28 06:01 PMCR- 2020/01/01 CRDT- 2020/08/28 06:00 PHST- 2020/02/17 00:00 [received] PHST- 2020/06/29 00:00 [accepted] PHST- 2020/08/28 06:00 [entrez] PHST- 2020/08/28 06:00 [pubmed] PHST- 2020/08/28 06:01 [medline] PHST- 2020/01/01 00:00 [pmc-release] AID - 10.3389/fnagi.2020.00226 [doi] PST - epublish SO - Front Aging Neurosci. 2020 Jul 24;12:226. doi: 10.3389/fnagi.2020.00226. eCollection 2020.