PMID- 29656361 OWN - NLM STAT- MEDLINE DCOM- 20190118 LR - 20210109 IS - 1559-1182 (Electronic) IS - 0893-7648 (Linking) VI - 55 IP - 12 DP - 2018 Dec TI - Characterization of the Mitochondrial Aerobic Metabolism in the Pre- and Perisynaptic Districts of the SOD1(G93A) Mouse Model of Amyotrophic Lateral Sclerosis. PG - 9220-9233 LID - 10.1007/s12035-018-1059-z [doi] AB - Amyotrophic lateral sclerosis (ALS) is an adult-onset fatal neurodegenerative disease characterized by muscle wasting, weakness, and spasticity due to a progressive degeneration of cortical, brainstem, and spinal motor neurons. The etiopathological causes are still largely obscure, although astrocytes definitely play a role in neuronal damage. Several mechanisms have been proposed to concur to neurodegeneration in ALS, including mitochondrial dysfunction. We have previously shown profound modifications of glutamate release and presynaptic plasticity in the spinal cord of the SOD1(G93A) mouse model of ALS. In this work, we characterized, for the first time, the aerobic metabolism in two specific compartments actively involved in neurotransmission (i.e. the presynaptic district, using purified synaptosomes, and the perisynaptic astrocyte processes, using purified gliosomes) in SOD1(G93A) mice at different stages of the disease. ATP/AMP ratio was lower in synaptosomes isolated from the spinal cord, but not from other brain areas, of SOD1(G93A) vs. control mice. The energy impairment was linked to altered oxidative phosphorylation (OxPhos) and increment of lipid peroxidation. These metabolic dysfunctions were present during disease progression, starting at the very pre-symptomatic stages, and did not depend on a different number of mitochondria or a different expression of OxPhos proteins. Conversely, gliosomes showed a reduction of the ATP/AMP ratio only at the late stages of the disease and an increment of oxidative stress also in the absence of a significant decrement in OxPhos activity. Data suggest that the presynaptic neuronal moiety plays a pivotal role for synaptic energy metabolism dysfunctions in ALS. Changes in the perisynaptic compartment seem subordinated to neuronal damage. FAU - Ravera, Silvia AU - Ravera S AD - Department of Pharmacy, Unit of Pharmacology and Toxicology, University of Genoa, 16148, Genoa, Italy. FAU - Bonifacino, Tiziana AU - Bonifacino T AD - Department of Pharmacy, Unit of Pharmacology and Toxicology, University of Genoa, 16148, Genoa, Italy. FAU - Bartolucci, Martina AU - Bartolucci M AD - Department of Pharmacy, Laboratory of Biochemistry, University of Genoa, 16132, Genoa, Italy. FAU - Milanese, Marco AU - Milanese M AD - Department of Pharmacy, Unit of Pharmacology and Toxicology, University of Genoa, 16148, Genoa, Italy. AD - Center of Excellence for Biomedical Research, University of Genoa, 16132, Genoa, Italy. FAU - Gallia, Elena AU - Gallia E AD - Department of Pharmacy, Unit of Pharmacology and Toxicology, University of Genoa, 16148, Genoa, Italy. FAU - Provenzano, Francesca AU - Provenzano F AD - Department of Pharmacy, Unit of Pharmacology and Toxicology, University of Genoa, 16148, Genoa, Italy. FAU - Cortese, Katia AU - Cortese K AD - Department of Experimental Medicine, Human Anatomy, University of Genoa, 16132, Genoa, Italy. FAU - Panfoli, Isabella AU - Panfoli I AD - Department of Pharmacy, Laboratory of Biochemistry, University of Genoa, 16132, Genoa, Italy. FAU - Bonanno, Giambattista AU - Bonanno G AUID- ORCID: 0000-0003-3744-5786 AD - Department of Pharmacy, Unit of Pharmacology and Toxicology, University of Genoa, 16148, Genoa, Italy. bonanno@difar.unige.it. AD - Center of Excellence for Biomedical Research, University of Genoa, 16132, Genoa, Italy. bonanno@difar.unige.it. LA - eng GR - PRIN project n. 2016058401/Italian Ministry of University/ GR - SIR project n. RBSI14B1Z/Italian Ministry of University/ GR - project n. April16/848-791/Motor Neurone Disease Association/United Kingdom PT - Journal Article DEP - 20180414 PL - United States TA - Mol Neurobiol JT - Molecular neurobiology JID - 8900963 RN - 0 (Mitochondrial Proteins) RN - 415SHH325A (Adenosine Monophosphate) RN - 8L70Q75FXE (Adenosine Triphosphate) RN - EC 1.15.1.1 (Superoxide Dismutase-1) SB - IM MH - Adenosine Monophosphate/metabolism MH - Adenosine Triphosphate/metabolism MH - Aerobiosis MH - Amyotrophic Lateral Sclerosis/*metabolism/pathology MH - Animals MH - Brain/metabolism MH - Disease Models, Animal MH - Energy Metabolism MH - Humans MH - Lipid Peroxidation MH - Mice MH - Mice, Transgenic MH - Mitochondria/*metabolism/ultrastructure MH - Mitochondrial Proteins/metabolism MH - Neuroglia/metabolism MH - Oxygen Consumption MH - Spinal Cord/metabolism MH - Superoxide Dismutase-1/*metabolism MH - Synapses/*metabolism/ultrastructure MH - Synaptosomes/metabolism/ultrastructure OTO - NOTNLM OT - Amyotrophic lateral sclerosis OT - Gliosomes OT - Oxidative phosphorylation OT - SOD1 G93A mouse OT - Synaptosomes EDAT- 2018/04/16 06:00 MHDA- 2019/01/19 06:00 CRDT- 2018/04/16 06:00 PHST- 2017/12/27 00:00 [received] PHST- 2018/04/03 00:00 [accepted] PHST- 2018/04/16 06:00 [pubmed] PHST- 2019/01/19 06:00 [medline] PHST- 2018/04/16 06:00 [entrez] AID - 10.1007/s12035-018-1059-z [pii] AID - 10.1007/s12035-018-1059-z [doi] PST - ppublish SO - Mol Neurobiol. 2018 Dec;55(12):9220-9233. doi: 10.1007/s12035-018-1059-z. Epub 2018 Apr 14.