Parkinson's Disease Mechanisms and Treatments

α-synuclein promotes neuronal dysfunction and death by disrupting the binding of ankyrin to β-spectrin

This study identifies β-spectrin as a key binding partner of α-synuclein, showing that their interaction disrupts the spectrin-ankyrin complex, leading to neuronal dysfunction and death in Parkinson's disease and related disorders.

Diverging Parkinson's Disease Pathology between GBAN370S ,LRRK2G2019S and engineered SNCAA53T iPSC-derived Dopaminergic Neurons

This study compares dopamine neuron phenotypes from PD patients with mutations in GBAN370S and LRRK2G2019S to engineered SNCAA53T iPSC-derived neurons, revealing divergent pathogenic mechanisms and potential therapeutic targets.

Alpha-synuclein pathology and reduced neurogenesis in the olfactory system affect olfaction in a mouse model of Parkinsons disease

This study investigates olfactory dysfunction in a mouse model of Parkinson's disease, finding that alpha-synuclein pathology and reduced neurogenesis in the olfactory bulb contribute to impaired olfaction.

Interaction of mitochondrial polygenic score and environmental factors in LRRK2 p.Gly2019Ser parkinsonism

This study examines how a mitochondrial polygenic score interacts with environmental factors to influence age at onset in LRRK2-PD and iPD, finding ethnic-specific effects and gene-environment interactions.

α-synuclein expression in response to bacterial ligands and metabolites in gut enteroendocrine cells

This study shows bacterial ligands and metabolites increase α-synuclein levels in gut enteroendocrine cells, potentially contributing to Parkinson's disease pathology.

Disease-modifying effects of Vincamine supplementation in Drosophila and human cell models of Parkinson's disease

This study identifies vincamine as a potential therapeutic for Parkinson's disease by showing it reduces oxidative stress and motor defects in Drosophila and human cell models.

Intragastric administration of low-dose rotenone post-colitis exacerbates damage to the nigrostriatal dopaminergic system in Parkinson's disease: The pace accelerates even more

This study shows that low-dose rotenone given after colitis worsens gut dysfunction and accelerates dopaminergic neuron loss in a mouse model of Parkinson's disease.

Genetic inactivation of the USP19 deubiquitinase regulates a-synuclein ubiquitination and inhibits accumulation of Lewy body like aggregates in mice

This study shows that genetic inactivation of USP19 reduces a-synuclein ubiquitination and Lewy body-like aggregate accumulation in a mouse model of Parkinson's disease.

Toxicity of extracellular alpha-synuclein is independent of intracellular alpha-synuclein

This study shows that extracellular alpha-synuclein toxicity in Parkinson's disease is independent of intracellular alpha-synuclein and linked to mitochondrial dysfunction.

Identification and prediction of Parkinson's disease subtypes and progression using machine learning in two cohorts.

This study uses machine learning to identify Parkinson's disease subtypes and predict progression in two cohorts, finding three subtypes with distinct progression rates and high prediction accuracy.

Identification of DOT1L Inhibitor in a Screen for Factors that Promote Dopaminergic Neuron Survival

The paper identifies SGC0946, a DOT1L inhibitor, as a candidate molecule that enhances dopaminergic neuron survival in vitro through a high-throughput screening approach.

Upregulated extracellular matrix-related genes and impaired synaptic activity in dopaminergic and hippocampal neurons derived from Parkinson's disease patients with PINK1 and PARK2 mutations

Mitochondrial DNA heteroplasmy distinguishes disease manifestation in PINK1- and PRKN-linked Parkinson's disease

The paper identifies mitochondrial DNA heteroplasmy as a marker distinguishing disease manifestation in PINK1/PRKN mutation carriers.

Dissecting aggregation and seeding dynamics of α-Syn polymorphs using the phasor approach to FLIM

The paper uses FLIM to study α-Syn polymorphs in cells, showing distinct fluorescence lifetimes and differential processing by clearance pathways, leading to increased seeding capacity.

Spontaneous object exploration in a recessive gene knockout model of Parkinson's disease: Development and progression of object recognition memory deficits in male Pink1-/- rats.

This study investigates cognitive impairments in Pink1-/- rats using object recognition tasks, finding age-related memory deficits that precede motor and affective changes.

MHC class II transactivator effects on local and systemic immune responses in an α-synuclein seeded rat model for Parkinson's disease

This study examines how reduced Ciita levels affect immune responses in a rat model of Parkinson's disease, finding increased TNF levels and altered MHCII expression in immune cells.

Global Parkinson's Genetics Program (GP2) Monogenic Network Protocol: Elucidating causative gene variants in hereditary Parkinson's disease

The paper establishes a protocol for whole-genome sequencing to identify genetic causes of Parkinson's disease, focusing on monogenic variants and their clinical implications.

Patient-Derived Three-Dimensional Cortical Neurospheres to Model Parkinson's Disease

This study develops a 3D cortical neurosphere model from patient-derived iPSCs to study Parkinson's Disease mechanisms and test small molecule therapeutics.

AAV-mediated Expression of a Novel Conformational Anti-Aggregated alpha-Synuclein Antibody Prolongs Survival in a Genetic Model of alpha-Synucleinopathies

This study shows that AAV-mediated delivery of a novel anti-aggregated alpha-synuclein antibody improves survival in a mouse model of alpha-synucleinopathies.

Nigral-specific increase in ser31 tyrosine hydroxylase phosphorylation offsets dopamine loss and forestalls hypokinesia onset during progressive nigrostriatal neuron loss

The paper investigates how increased ser31 tyrosine hydroxylase phosphorylation in the substantia nigra compensates for dopamine loss and delays hypokinesia onset in a rat model of Parkinson's disease.

UBA52 is crucial in HSP90 ubiquitylation and neurodegenerative signaling during early phase of Parkinson disease

The paper investigates UBA52's role in HSP90 ubiquitylation and neurodegenerative signaling in early Parkinson's disease using in vitro and in vivo models.

Extracellular matrix protein anosmin-1 overexpression regulates dopaminergic phenotype in the CNS and the PNS with no pathogenic consequences in MPTP model of Parkinson disease

This study shows that overexpression of anosmin-1 increases dopaminergic neurons and alters striatum organization but does not affect susceptibility to MPTP-induced Parkinsonism.

Protein aggregation and calcium dysregulation are the earliest hallmarks of synucleinopathy in human midbrain dopaminergic neurons

This study uses hiPSCs with SNCA mutations to identify early molecular events in synucleinopathy, showing protein aggregation precedes functional impairments in midbrain dopaminergic neurons.

Nicotine-mediated rescue of α-synuclein toxicity requires synaptic vesicle glycoprotein 2

The paper investigates how nicotine interacts with the SV2 gene to mitigate α-synuclein toxicity in a Drosophila model of Parkinson's disease, showing that SV2 is necessary for nicotine's protective effect.

New SNCA mutation and structures of α-synuclein filaments from juvenile-onset synucleinopathy

The paper identifies a SNCA mutation causing juvenile-onset synucleinopathy and describes the structural features of α-synuclein filaments associated with the disease.

In vivo reduction of age-dependent neuromelanin accumulation mitigates features of Parkinson's disease

This study reduces age-related neuromelanin accumulation in a humanized rodent model, mitigating Parkinson's disease features by preserving dopamine homeostasis and neuronal integrity.

Unveiling Sex-based Differences in Parkinson's Disease: A Comprehensive Meta-analysis of Transcriptomic Studies

This study identifies sex-based differences in Parkinson's disease transcriptomics through meta-analysis of 267 samples across three brain regions, revealing sex-specific gene expression and pathway alterations.

IFNγ drives neuroinflammation and demyelination in a mouse model of multiple system atrophy

This study shows that IFNγ from CD4+ T cells drives neuroinflammation and demyelination in a mouse model of MSA.

Identification of a sex-specific genetic signature in dementia with Lewy bodies: a meta-analysis of genome-wide association studies

This paper performs a large meta-analysis of GWAS in dementia with Lewy bodies, identifying sex-specific genetic risk signals and highlighting the need for larger cohorts.

Neuroprotective potential of an Ayurvedic compound "Ras Sindoor" on Drosophila melanogaster model of Parkinson's disease

This study identifies Ras-Sindoor, an Ayurvedic compound, as neuroprotective in Drosophila Parkinson's models by improving locomotion, reducing cell death, and extending lifespan.