Parkinson's Disease Mechanisms and Treatments

14-3-3 binding maintains the Parkinson's associated kinase LRRK2 in an inactive state

The paper presents the cryo-EM structure of the LRRK2:14-3-32 complex, showing how 14-3-3 binding inhibits LRRK2 activity and how PD mutations disrupt this interaction.

Enhanced beta power emerges from simulated parkinsonian primary motorcortex

The paper simulates Parkinson's disease effects on primary motor cortex neurons, showing increased beta band power in simulated networks.

The spatial landscape of glial pathology and T-cell response in Parkinson's disease substantia nigra

The paper analyzes T-cell responses and glial pathology in Parkinson's disease substantia nigra using single nucleus RNA sequencing and spatial transcriptomics, revealing CD8+ T-cell characteristics and altered cellular interactions.

Hedyotis Diffusae Herba Mitigates Rotenone-Induced Neurotoxicity via Akt Pathway in SH-SY5Y Cells

This study identifies HDH's neuroprotective effects against rotenone toxicity in SH-SY5Y cells via Akt pathway activation and anti-inflammatory/antioxidant mechanisms.

Astrocytic Ceruloplasmin Deficiency Triggers Iron Toxicity and Neurodegeneration in a LRRK2 Parkinson's Tri-Culture Model

This study identifies ceruloplasmin deficiency in mutant astrocytes as a driver of iron toxicity and neurodegeneration in a Parkinson's tri-culture model.

Genome-wide association analyses reveal susceptibility variants linked to Parkinson's disease in the South African population using inferred global and local ancestry

This study identifies Parkinson's disease susceptibility variants in a South African cohort using GWAS and local ancestry analysis, highlighting ancestry-specific genetic risk factors.

Elevated phosphorylated α-synuclein and phosphorylated tau in Lrrk2 p.G2019S-mutant mice following influenza A pneumonitis

This study shows that Lrrk2 p.G2019S mutant mice exhibit increased phosphorylated α-synuclein and tau in the brain after influenza A infection, suggesting a link between LRRK2 mutations and neurodegeneration.

Cortical α-synuclein pathology induces neuronal hypoactivity andcircuit changes but not functional impairments in a model of early Lewy body dementia

This study shows that α-synuclein pathology in mice visual cortex reduces neuronal activity in affected cells and alters population activity but does not impair visuoperceptual function.

Lysosomal Glucocerebrosidase is needed for ciliary Hedgehog signaling: A convergent pathway to Parkinsons disease

This paper shows that mutations in LRRK2 and GBA1 impair Hedgehog signaling in the striatum through distinct mechanisms, contributing to Parkinson's disease pathogenesis.

Sex-specific vulnerability to behavioural and morphological alterations in a mouse model of Parkinson's disease overexpressing mutant A53T alpha-synuclein

This study shows male mice overexpressing mutant A53T alpha-synuclein exhibit earlier and more severe motor deficits and axonal degeneration compared to females in a Parkinson's disease model.

A Transcriptomic Roadmap of Parkinson's Disease Progression at Single Cell Resolution

This study creates a single-nucleus transcriptomic atlas of Parkinson's disease progression, identifying cell-type-specific gene expression changes and linking them to genetic risk factors and disease stages.

Negatively charged α-Synuclein condensate modulates partitioning of molecules

This study shows that negatively charged α-Synuclein condensates influence molecular partitioning based on charge differences, revealing electrostatic effects on phase separation.

Sex-stratified analysis of the potential association between PGLYRP2 rs892145 variant and Parkinson's disease across diverse ancestral populations

The paper analyzes the association between PGLYRP2 variants and Parkinson's disease across diverse ancestries and sexes, finding no significant sex-dependent effect for rs892145-T but a potential protective effect for rs959117-T in African American and Caribbean females.

PPM1M, a LRRK2-counteracting, phosphoRab12-preferring phosphatase with potential link to Parkinsons disease

The paper identifies PPM1M as a phosphatase that reverses LRRK2-mediated Rab phosphorylation and links a rare mutation to Parkinson's disease.

In vivo and in silico alpha-synuclein propagation dynamics: The role of genotype, epicentre, and connectivity

This study investigates how alpha-synuclein propagation affects brain atrophy and motor deficits across different genotypes and inoculation sites in mice.

Transcriptional Dysregulation in the Hippocampus of a murine model for Parkinson's Disease Cognition Impairment is Driven by Sex, Age, and Alpha-synuclein overexpression

Sex differences distinguish performance in four object recognition-based memory tasks in the Pink1-/- rat model of Parkinson's disease

The paper shows that male Pink1-/- rats develop cognitive deficits earlier than females in memory tasks, mirroring sex differences in Parkinson's disease.

Loss of the lysosomal lipid flippase ATP10B leads to progressive dopaminergic neurodegeneration and Parkinsonian motor deficits

This study shows that ATP10B loss causes dopaminergic neuron death and Parkinsonian symptoms in rats and human stem cell models.

Pathological α-Synuclein Perturbs Nuclear Integrity

This study shows pathological α-synuclein localizes in the nucleus, causing nuclear damage and dysfunction in synucleinopathy models and human tissue.

Alpha-Synuclein Fibril Structures Cluster into Distinct Classes

The paper classifies Alpha-synuclein fibril structures into two main polymorph classes using clustering and finds conserved motifs that could guide drug design.

Formic acid impairs α-synuclein seeding activity in human and mouse brains

This study shows formic acid treatment reduces α-synuclein seeding activity in fixed brain samples from humans and mice without compromising histopathological quality.

Genetic basis of maneb-induced dopaminergic neurodegeneration in Drosophila

This study identifies genetic modifiers of maneb-induced dopaminergic neurodegeneration in Drosophila using genome-wide association analysis and validates candidate genes involved in Wnt signaling.

Parkinson's Paradox: Alpha-synuclein's Selective Strike on SNc Dopamine Neurons over VTA

This study shows that alpha-synuclein elevates firing rates and impairs homeostatic regulation in SNc dopamine neurons, but not VTA neurons, before neurodegeneration occurs.

Thermal cycling-hyperthermia attenuates rotenone-induced cell injury in SH-SY5Y cells through heat-activated mechanisms

This study shows that thermal cycling-hyperthermia reduces rotenone-induced cell injury in SH-SY5Y cells by inhibiting mitochondrial apoptosis, ROS accumulation, and protein aggregation through heat-activated pathways.

Heterotypic Protein Interactions Modulate the Condensate Dynamics and Aggregation of α-Synuclein

This study investigates how heterotypic protein interactions affect α-synuclein condensate dynamics and aggregation, showing that multivalent electrostatic interactions drive co-condensation and promote amyloid fibril formation.

Optogenetic stimulation of nigral astrocytes is neuroprotective in a 6-OHDA model of neurodegeneration.

This study shows optogenetic stimulation of nigral astrocytes reduces motor deficits and dopamine neuron loss in a 6-OHDA model of Parkinson's disease.

The Global Landscape of Genetic Variation in Parkinson's disease: Multi-Ancestry Insights into Established Disease Genes and their Translational Relevance

This paper analyzes genetic variation in Parkinson's disease across multiple ancestries, revealing ancestry-specific patterns and highlighting the importance of diverse populations in genetic research.

A meta-analysis of periodic and aperiodic M/EEG components in Parkinson's disease

This study conducts a meta-analysis of M/EEG data from Parkinson's disease patients and healthy controls, identifying consistent periodic and aperiodic signal changes that may inform diagnostics.

Alpha-synuclein null mutation exacerbates the phenotype of a model of Menkes disease in female mice

This study identifies Snca as a genetic modifier of Atp7a in female mice, revealing a potential role for Snca in the ER-Golgi system in a sex-dependent manner.

Insights into Ancestral Diversity in Parkinsons Disease Risk: A Comparative Assessment of Polygenic Risk Scores

This study compares polygenic risk scores for Parkinson's disease across seven ancestries, finding varying predictive accuracy and highlighting the need for ancestry-specific models.