Article
Clinical Neurology
Marta Gonzalez-Sepulveda, Joan Compte, Thais Cuadros, Alba Nicolau, Camille Guillard-Sirieix, Nuria Penuelas, Marina Lorente-Picon, Annabelle Parent, Jordi Romero-Gimenez, Joana M. Cladera-Sastre, Ariadna Laguna, Miquel Vila
Summary: Neurons that accumulate the highest levels of neuromelanin with age are also the most susceptible to degeneration in Parkinson's disease. Using a neuromelanin-producing rat model, Gonzalez-Sepulveda, Compte et al. show that slowing down age-dependent neuromelanin production can help prevent Parkinson's disease-like features.
Review
Cell Biology
Samir Kumar Beura, Abhishek Ramachandra Panigrahi, Pooja Yadav, Sunil Kumar Singh
Summary: Parkinson's disease is a common neurodegenerative disease characterized by motor and non-motor dysfunctions. Platelets play an important role in Parkinson's disease and may be a target for treatment.
AGEING RESEARCH REVIEWS
(2022)
Article
Neurosciences
Alexandra Sobczak, Stefan Repplinger, Eva M. Bauch, Norbert Brueggemann, Christina Lohse, Hermann Hinrichs, Lars Buentjen, Juergen Voges, Tino Zaehle, Nico Bunzeck
Summary: The results from intracranial electroencephalography recordings show that anticipating both positive and negative social feedback accelerates response times in healthy young and older adults, while the effect in operated Parkinson's Disease (PD) patients may be influenced by small sample size. The behavioral effect in non-operated PD patients is not modulated by medication status, indicating that processes other than dopaminergic neuromodulation play a role in driving invigoration by social incentives.
Review
Neurosciences
Kathleen Carmichael, Rebekah C. Evans, Elena Lopez, Lixin Sun, Mantosh Kumar, Jinhui Ding, Zayd M. Khaliq, Huaibin Cai
Summary: This review focuses on a distinct group of dopamine-producing neurons, which show significant loss in Parkinson's disease patients. These neurons can be easily identified by selective expression of ALDH1A1 and play a crucial role in regulating movement intensity. The study summarizes the connectivity and functionality of these neurons, as well as the mechanisms regulating their activity and their implications for potential Parkinson's disease treatment.
FRONTIERS IN NEURAL CIRCUITS
(2021)
Review
Biochemistry & Molecular Biology
Toshiharu Nagatsu, Akira Nakashima, Hirohisa Watanabe, Shosuke Ito, Kazumasa Wakamatsu
Summary: Parkinson's disease is an aging-related neurodegenerative disease characterized by movement disorders and deficiency of dopamine. Lewy bodies and abnormal accumulation of neuromelanin are the histopathological hallmarks of Parkinson's disease, leading to cell death of dopamine neurons.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Neurosciences
Vignayanandam Ravindernath-Jayashree Muddapu, Karthik Vijayakumar, Keerthiga Ramakrishnan, V. Srinivasa Chakravarthy
Summary: Parkinson's disease is caused by the progressive loss of dopaminergic cells in the substantia nigra pars compacta, possibly linked to metabolic deficiency. L-DOPA treatment for PD may have toxic effects on neurons. A proposed computational model aims to investigate the mechanism behind neurodegeneration and offer insights for therapeutic development.
FRONTIERS IN NEUROSCIENCE
(2022)
Article
Clinical Neurology
Tushar Kamath, Evan Z. Macosko
Summary: Parkinson's disease is characterized by the death of dopaminergic neurons in the substantia nigra. Recent advances in genomic profiling have identified specific pathways and genetic variants involved in the susceptibility of dopaminergic neurons in Parkinson's disease. This provides new opportunities for understanding and developing therapies for this complex disorder.
MOVEMENT DISORDERS
(2023)
Article
Clinical Neurology
Ada Ledonne, Mariangela Massaro Cenere, Emanuela Paldino, Vincenza D'Angelo, Sebastian Luca D'Addario, Nicolas Casadei, Annalisa Nobili, Nicola Berretta, Francesca R. Fusco, Rossella Ventura, Giuseppe Sancesario, Ezia Guatteo, Nicola Biagio Mercuri
Summary: Prolonged overexpression of alpha-synuclein has detrimental effects on the structural and functional properties of substantia nigra pars compacta dopamine neurons, including compromised soma and dendritic arborization, increased firing activity, and altered ion channel function.
MOVEMENT DISORDERS
(2023)
Article
Biochemistry & Molecular Biology
Xingxing Jian, Guihu Zhao, He Chen, Yanhui Wang, Jinchen Li, Lu Xie, Bin Li
Summary: This study utilized transcriptomics analysis to identify several hub DEGs between PD patients and normal controls, showing high correlations among these genes. A Cox model with an eight-gene signature was constructed to predict PD progression and survival successfully in an independent dataset, highlighting the clinical significance of these findings.
COMPUTATIONAL AND STRUCTURAL BIOTECHNOLOGY JOURNAL
(2022)
Article
Cell Biology
Takuya Hikima, Christian R. Lee, Paul Witkovsky, Julia Chesler, Konstantin Ichtchenko, Margaret E. Rice
Summary: Research suggests that somatodendritic dopamine release in the substantia nigra pars compacta autoinhibits the neuron that releases it.
Article
Biochemistry & Molecular Biology
Jessica IChi Lai, Alessandra Porcu, Benedetto Romoli, Maria Keisler, Fredric P. P. Manfredsson, Susan B. B. Powell, Davide Dulcis
Summary: This study investigated the mechanism of how nicotine-induced dopamine (DA) plasticity protects substantia nigra (SN) neurons against nigrostriatal damage in Parkinson's disease (PD). The results showed that chronic nicotine treatment led to upregulation of transcription factor Nurr1 and DA-synthesizing enzyme tyrosine hydroxylase (TH) in GABAergic neurons in the SN. Nicotine also reduced the number of alpha-synuclein-expressing neurons and rescued motor deficits in PD mice. Importantly, the activation of GABA neurons and Nurr1 overexpression were sufficient to mimic nicotine-mediated dopamine plasticity. This study provides insights into developing new strategies for neurotransmitter replacement in PD.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biology
Sage S. Frehner, Kip T. Dooley, Michelle C. Palumbo, Aaron L. Smith, Mark M. Goodman, Karen L. Bales, Sara M. Freeman
Summary: This study found significantly lower levels of OXTR in females with autism compared to other groups. There were no differences in mRNA levels for either gene across the four groups. These results suggest that dysregulation in OXTR protein translation or increased OXTR internalization/recycling may contribute to the differences in social symptoms seen in females with autism.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2022)
Article
Mathematical & Computational Biology
Sandeep Sathyanandan Nair, Vignayanandam Ravindernath Muddapu, V. Srinivasa Chakravarthy
Summary: A multiscale computational model has been developed to replicate Parkinson's disease symptoms and demonstrate the effects of medication. This model reveals the relationship between dopaminergic axonal degeneration in the basal ganglia and various symptoms of Parkinson's disease, and can predict personalized medication dosage.
FRONTIERS IN COMPUTATIONAL NEUROSCIENCE
(2022)
Review
Biochemistry & Molecular Biology
Ezia Guatteo, Nicola Berretta, Vincenzo Monda, Ada Ledonne, Nicola Biagio Mercuri
Summary: This article focuses on the functional properties of nigral dopaminergic neurons and summarizes the shared or unique features of neuronal dysfunction in different stages of PD animal models, with the goal of illustrating the functional modifications occurring in these neurons during disease progression.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Neurosciences
Qingguo Ren, Yihua Wang, Shanshan Leng, Xiaomin Nan, Bin Zhang, Xinyan Shuai, Jianyuan Zhang, Xiaona Xia, Ye Li, Yaqiong Ge, Xiangshui Meng, Cuiping Zhao
Summary: Radiomic features based on magnitude images can reflect the Hoehn-Yahr stage of PD to some extent. The LASSO logistic regression model showed good prediction efficacy in both the training and validation sets.
FRONTIERS IN NEUROSCIENCE
(2021)