ArticleMolecules (Basel, Switzerland)2026
Alterations in Phospholipid Levels and Spatial Distribution in the Motor Cortex and Their Correlation with Motor Performance in an MPTP-Induced Parkinsonian Mouse Model.
Article in Molecules (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Parkinson's disease (PD) is a neurodegenerative disorder caused by the death of dopaminergic neurons in the substantia nigra pars compacta (SNc). Lipid metabolism, especially phospholipids, has been reported to be altered in PD. The purpose of this study is to investigate the temporal expression and spatial distribution of phospholipids in the motor cortex and striatum at different time points of PD using matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) in a 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced parkinsonian mouse model. Mice were injected with saline (NSS) or MPTP at two different time points to create acute and subacute models. Motor analysis was performed at 0, 3, 7, 14, and 21 days post-injection. Tyrosine hydroxylase (TH) staining revealed progressive damage of neurons in the substantia nigra compacta (SNc) and reduced striatal fibers in MPTP-treated animals. By using MALDI-MSI, we identified changes in phosphatidylcholine (PC) profiles in the brains of MPTP-treated animals. Polyunsaturated PCs, including PC 36:4 (16:0/20:4), PC 38:6 (16:0/22:6), and PC 40:8 (18:2/22:6), were decreased in the MPTP-treated groups. These reductions were time-dependent and were more pronounced in the subacute MPTP-treated group. The loss of dopamine neurons caused by MPTP may be associated with the selective loss of polyunsaturated PCs in brain membranes, indicating that lipid metabolism and membrane structural alterations may contribute to the pathology of PD.
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