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Yang Y, Zhang Z. α-Synuclein pathology from the body to the brain: so many seeds so close to the central soil. Neural Regen Res 2024; 19:1463-1472. [PMID: 38051888 PMCID: PMC10883481 DOI: 10.4103/1673-5374.387967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 08/24/2023] [Indexed: 12/07/2023] Open
Abstract
ABSTRACT α-Synuclein is a protein that mainly exists in the presynaptic terminals. Abnormal folding and accumulation of α-synuclein are found in several neurodegenerative diseases, including Parkinson's disease. Aggregated and highly phosphorylated α-synuclein constitutes the main component of Lewy bodies in the brain, the pathological hallmark of Parkinson's disease. For decades, much attention has been focused on the accumulation of α-synuclein in the brain parenchyma rather than considering Parkinson's disease as a systemic disease. Recent evidence demonstrates that, at least in some patients, the initial α-synuclein pathology originates in the peripheral organs and spreads to the brain. Injection of α-synuclein preformed fibrils into the gastrointestinal tract triggers the gut-to-brain propagation of α-synuclein pathology. However, whether α-synuclein pathology can occur spontaneously in peripheral organs independent of exogenous α-synuclein preformed fibrils or pathological α-synuclein leakage from the central nervous system remains under investigation. In this review, we aimed to summarize the role of peripheral α-synuclein pathology in the pathogenesis of Parkinson's disease. We also discuss the pathways by which α-synuclein pathology spreads from the body to the brain.
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Affiliation(s)
- Yunying Yang
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Zhentao Zhang
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
- TaiKang Center for Life and Medical Sciences, Wuhan University, Wuhan, Hubei Province, China
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Hong J, Li Y, Chen L, Han D, Li Y, Mi X, Liu K, Wang Q, Song Y, Liu T, Yang N, Liu Y, Li Z, Guo X. A53T α-synuclein mutation increases susceptibility to postoperative delayed neurocognitive recovery via hippocampal Ang-(1-7)/MasR axis. Biochem Pharmacol 2024; 224:116261. [PMID: 38705534 DOI: 10.1016/j.bcp.2024.116261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 04/28/2024] [Accepted: 05/02/2024] [Indexed: 05/07/2024]
Abstract
Delayed neurocognitive recovery (dNCR) is a common complication in geriatric surgical patients. The impact of anesthesia and surgery on patients with neurodegenerative diseases, such as Parkinson's disease (PD) or prion disease, has not yet been reported. In this study, we aimed to determine the association between a pre-existing A53T genetic background, which involves a PD-related point mutation, and the development of postoperative dNCR. We observed that partial hepatectomy induced hippocampus-dependent cognitive deficits in 5-month-old A53T transgenic mice, a model of early-stage PD without cognitive deficits, unlike in age-matched wild-type (WT) mice. We respectively examined molecular changes at 6 h, 1 day, and 2 days after partial hepatectomy and observed that cognitive changes were accompanied by weakened angiotensin-(1-7)/Mas receptor [Ang-(1-7)/MasR] axis, increased alpha-synuclein (α-syn) expression and phosphorylation, decreased methylated protein phosphatase-2A (Me-PP2A), and prompted microglia M1 polarization and neuronal apoptosis in the hippocampus at 1 day after surgery. Nevertheless, no changes in blood-brain barrier (BBB) integrity or plasma α-syn levels in either A53T or WT mice. Furthermore, intranasal administration of selective MasR agonist AVE 0991, reversed the mentioned cognitive deficits in A53T mice, enhanced MasR expression, reduced α-syn accumulation and phosphorylation, and attenuated microglia activation and apoptotic response. Our findings suggest that individuals with the A53T genetic background may be more susceptible to developing postoperative dNCR. This susceptibility could be linked to central α-syn accumulation mediated by the weakened Ang-(1-7)/MasR/methyl-PP2A signaling pathway in the hippocampus following surgery, independent of plasma α-syn level and BBB.
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Affiliation(s)
- Jingshu Hong
- Department of Anesthesiology, Peking University Third Hospital, No. 49, North Garden Street, Haidian District, Beijing 100191, China
| | - Yue Li
- Department of Anesthesiology, Peking University Third Hospital, No. 49, North Garden Street, Haidian District, Beijing 100191, China
| | - Lei Chen
- Department of Anesthesiology, Peking University Third Hospital, No. 49, North Garden Street, Haidian District, Beijing 100191, China
| | - Dengyang Han
- Department of Anesthesiology, Peking University Third Hospital, No. 49, North Garden Street, Haidian District, Beijing 100191, China
| | - Yitong Li
- Department of Anesthesiology, Peking University Third Hospital, No. 49, North Garden Street, Haidian District, Beijing 100191, China
| | - Xinning Mi
- Department of Anesthesiology, Peking University Third Hospital, No. 49, North Garden Street, Haidian District, Beijing 100191, China
| | - Kaixi Liu
- Department of Anesthesiology, Peking University Third Hospital, No. 49, North Garden Street, Haidian District, Beijing 100191, China
| | - Qian Wang
- Department of Anesthesiology, Peking University Third Hospital, No. 49, North Garden Street, Haidian District, Beijing 100191, China
| | - Yanan Song
- Department of Anesthesiology, Peking University Third Hospital, No. 49, North Garden Street, Haidian District, Beijing 100191, China; Beijing Center of Quality Control and Improvement on Clinical Anesthesia, No. 49, North Garden Street, Haidian District, Beijing 100191, China
| | - Taotao Liu
- Department of Anesthesiology, Peking University Third Hospital, No. 49, North Garden Street, Haidian District, Beijing 100191, China
| | - Ning Yang
- Department of Anesthesiology, Peking University Third Hospital, No. 49, North Garden Street, Haidian District, Beijing 100191, China
| | - Yajie Liu
- Department of Anesthesiology, Peking University Third Hospital, No. 49, North Garden Street, Haidian District, Beijing 100191, China
| | - Zhengqian Li
- Department of Anesthesiology, Peking University Third Hospital, No. 49, North Garden Street, Haidian District, Beijing 100191, China; Beijing Center of Quality Control and Improvement on Clinical Anesthesia, No. 49, North Garden Street, Haidian District, Beijing 100191, China; Anesthesia and Perioperative Medicine Branch of China International Exchange and Promotive Association for Medical and Health Care (CPAM), No. 49, North Garden Street, Haidian District, Beijing 100191, China.
| | - Xiangyang Guo
- Department of Anesthesiology, Peking University Third Hospital, No. 49, North Garden Street, Haidian District, Beijing 100191, China; Beijing Center of Quality Control and Improvement on Clinical Anesthesia, No. 49, North Garden Street, Haidian District, Beijing 100191, China; Anesthesia and Perioperative Medicine Branch of China International Exchange and Promotive Association for Medical and Health Care (CPAM), No. 49, North Garden Street, Haidian District, Beijing 100191, China.
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3
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Patil P, Ford WR. Parkinson's Disease Recognition Using Decorrelated Convolutional Neural Networks: Addressing Imbalance and Scanner Bias in rs-fMRI Data. BIOSENSORS 2024; 14:259. [PMID: 38785733 PMCID: PMC11117585 DOI: 10.3390/bios14050259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 05/11/2024] [Accepted: 05/17/2024] [Indexed: 05/25/2024]
Abstract
Parkinson's disease (PD) is a neurodegenerative and progressive disease that impacts the nerve cells in the brain and varies from person to person. The exact cause of PD is still unknown, and the diagnosis of PD does not include a specific objective test with certainty. Although deep learning has made great progress in medical neuroimaging analysis, these methods are very susceptible to biases present in neuroimaging datasets. An innovative decorrelated deep learning technique is introduced to mitigate class bias and scanner bias while simultaneously focusing on finding distinguishing characteristics in resting-state functional MRI (rs-fMRI) data, which assists in recognizing PD with good accuracy. The decorrelation function reduces the nonlinear correlation between features and bias in order to learn bias-invariant features. The publicly available Parkinson's Progression Markers Initiative (PPMI) dataset, referred to as a single-scanner imbalanced dataset in this study, was used to validate our method. The imbalanced dataset problem affects the performance of the deep learning framework by overfitting to the majority class. To resolve this problem, we propose a new decorrelated convolutional neural network (DcCNN) framework by applying decorrelation-based optimization to convolutional neural networks (CNNs). An analysis of evaluation metrics comparisons shows that integrating the decorrelation function boosts the performance of PD recognition by removing class bias. Specifically, our DcCNN models perform significantly better than existing traditional approaches to tackle the imbalance problem. Finally, the same framework can be extended to create scanner-invariant features without significantly impacting the performance of a model. The obtained dataset is a multiscanner dataset, which leads to scanner bias due to the differences in acquisition protocols and scanners. The multiscanner dataset is a combination of two publicly available datasets, namely, PPMI and FTLDNI-the frontotemporal lobar degeneration neuroimaging initiative (NIFD) dataset. The results of t-distributed stochastic neighbor embedding (t-SNE) and scanner classification accuracy of our proposed feature extraction-DcCNN (FE-DcCNN) model validated the effective removal of scanner bias. Our method achieves an average accuracy of 77.80% on a multiscanner dataset for differentiating PD from a healthy control, which is superior to the DcCNN model trained on a single-scanner imbalanced dataset.
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Affiliation(s)
- Pranita Patil
- Department of Analytics, Harrisburg University of Science and Technology, Harrisburg, PA 17101, USA;
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Valdés-Fuentes M, Rodríguez-Martínez E, Rivas-Arancibia S. Accumulation of Alpha-Synuclein and Increase in the Inflammatory Response in the substantia nigra, Jejunum, and Colon in a Model of O 3 Pollution in Rats. Int J Mol Sci 2024; 25:5526. [PMID: 38791561 PMCID: PMC11122268 DOI: 10.3390/ijms25105526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 05/14/2024] [Accepted: 05/15/2024] [Indexed: 05/26/2024] Open
Abstract
This work aimed to study the effect of repeated exposure to low doses of ozone on alpha-synuclein and the inflammatory response in the substantia nigra, jejunum, and colon. Seventy-two male Wistar rats were divided into six groups. Each group received one of the following treatments: The control group was exposed to air. The ozone groups were exposed for 7, 15, 30, 60, and 90 days for 0.25 ppm for four hours daily. Afterward, they were anesthetized, and their tissues were extracted and processed using Western blotting, immunohistochemistry, and qPCR. The results indicated a significant increase in alpha-synuclein in the substantia nigra and jejunum from 7 to 60 days of exposure and an increase in NFκB from 7 to 90 days in the substantia nigra, while in the jejunum, a significant increase was observed at 7 and 15 days and a decrease at 60 and 90 days for the colon. Interleukin IL-17 showed an increase at 90 days in the substantia nigra in the jejunum and increases at 30 days and in the colon at 15 and 90 days. Exposure to ozone increases the presence of alpha-synuclein and induces the loss of regulation of the inflammatory response, which contributes significantly to degenerative processes.
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Affiliation(s)
| | | | - Selva Rivas-Arancibia
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico; (M.V.-F.); (E.R.-M.)
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5
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Fang P, Yu LW, Espey H, Agirman G, Kazmi SA, Li K, Deng Y, Lee J, Hrncir H, Romero-Lopez A, Arnold AP, Hsiao EY. Sex-dependent interactions between prodromal intestinal inflammation and LRRK2 G2019S in mice promote endophenotypes of Parkinson's disease. Commun Biol 2024; 7:570. [PMID: 38750146 PMCID: PMC11096388 DOI: 10.1038/s42003-024-06256-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Accepted: 04/26/2024] [Indexed: 05/18/2024] Open
Abstract
Gastrointestinal (GI) disruptions and inflammatory bowel disease (IBD) are commonly associated with Parkinson's disease (PD), but how they may impact risk for PD remains poorly understood. Herein, we provide evidence that prodromal intestinal inflammation expedites and exacerbates PD endophenotypes in rodent carriers of the human PD risk allele LRRK2 G2019S in a sex-dependent manner. Chronic intestinal damage in genetically predisposed male mice promotes α-synuclein aggregation in the substantia nigra, loss of dopaminergic neurons and motor impairment. This male bias is preserved in gonadectomized males, and similarly conferred by sex chromosomal complement in gonadal females expressing human LRRK2 G2019S. The early onset and heightened severity of neuropathological and behavioral outcomes in male LRRK2 G2019S mice is preceded by increases in α-synuclein in the colon, α-synuclein-positive macrophages in the colonic lamina propria, and loads of phosphorylated α-synuclein within microglia in the substantia nigra. Taken together, these data reveal that prodromal intestinal inflammation promotes the pathogenesis of PD endophenotypes in male carriers of LRRK2 G2019S, through mechanisms that depend on genotypic sex and involve early accumulation of α-synuclein in myeloid cells within the gut.
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Affiliation(s)
- Ping Fang
- Department of Integrative Biology & Physiology, University of California, Los Angeles, Los Angeles, CA, 90095, USA.
| | - Lewis W Yu
- Department of Integrative Biology & Physiology, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Hannah Espey
- Department of Integrative Biology & Physiology, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Gulistan Agirman
- Department of Integrative Biology & Physiology, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Sabeen A Kazmi
- Department of Integrative Biology & Physiology, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Kai Li
- F. Widjaja Foundation Inflammatory Bowel & Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
- Research Division of Immunology, Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA
| | - Yongning Deng
- Department of Integrative Biology & Physiology, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Department of Neurology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Jamie Lee
- Department of Integrative Biology & Physiology, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Haley Hrncir
- Department of Integrative Biology & Physiology, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Arlene Romero-Lopez
- UCLA Goodman-Luskin Microbiome Center, Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine, Los Angeles, CA, 90095, USA
| | - Arthur P Arnold
- Department of Integrative Biology & Physiology, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Elaine Y Hsiao
- Department of Integrative Biology & Physiology, University of California, Los Angeles, Los Angeles, CA, 90095, USA.
- UCLA Goodman-Luskin Microbiome Center, Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, David Geffen School of Medicine, Los Angeles, CA, 90095, USA.
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, CA, 90095, USA.
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6
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Khoshnan A. Gut Microbiota as a Modifier of Huntington's Disease Pathogenesis. J Huntingtons Dis 2024:JHD240012. [PMID: 38728199 DOI: 10.3233/jhd-240012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2024]
Abstract
Huntingtin (HTT) protein is expressed in most cell lineages, and the toxicity of mutant HTT in multiple organs may contribute to the neurological and psychiatric symptoms observed in Huntington's disease (HD). The proteostasis and neurotoxicity of mutant HTT are influenced by the intracellular milieu and responses to environmental signals. Recent research has highlighted a prominent role of gut microbiota in brain and immune system development, aging, and the progression of neurological disorders. Several studies suggest that mutant HTT might disrupt the homeostasis of gut microbiota (known as dysbiosis) and impact the pathogenesis of HD. Dysbiosis has been observed in HD patients, and in animal models of the disease it coincides with mutant HTT aggregation, abnormal behaviors, and reduced lifespan. This review article aims to highlight the potential toxicity of mutant HTT in organs and pathways within the microbiota-gut-immune-central nervous system (CNS) axis. Understanding the functions of Wild-Type (WT) HTT and the toxicity of mutant HTT in these organs and the associated networks may elucidate novel pathogenic pathways, identify biomarkers and peripheral therapeutic targets for HD.
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Affiliation(s)
- Ali Khoshnan
- Keck School of Medicine, Physiology and Neuroscience, University of Southern California, Los Angeles, CA, USA
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Li B, Xiao X, Bi M, Jiao Q, Chen X, Yan C, Du X, Jiang H. Modulating α-synuclein propagation and decomposition: Implications in Parkinson's disease therapy. Ageing Res Rev 2024; 98:102319. [PMID: 38719160 DOI: 10.1016/j.arr.2024.102319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 04/03/2024] [Accepted: 04/27/2024] [Indexed: 05/14/2024]
Abstract
α-Synuclein (α-Syn) is closely related to the pathogenesis of Parkinson's disease (PD). Under pathological conditions, the conformation of α-syn changes and different forms of α-syn lead to neurotoxicity. According to Braak stages, α-syn can propagate in different brain regions, inducing neurodegeneration and corresponding clinical manifestations through abnormal aggregation of Lewy bodies (LBs) and lewy axons in different types of neurons in PD. So far, PD lacks early diagnosis biomarkers, and treatments are mainly targeted at some clinical symptoms. There is no effective therapy to delay the progression of PD. This review first summarized the role of α-syn in physiological and pathological states, and the relationship between α-syn and PD. Then, we focused on the origin, secretion, aggregation, propagation and degradation of α-syn as well as the important regulatory factors in these processes systematically. Finally, we reviewed some potential drug candidates for alleviating the abnormal aggregation of α-syn in order to provide valuable targets for the treatment of PD to cope with the occurrence and progression of this disease.
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Affiliation(s)
- Beining Li
- School of Basic Medicine, Medical College of Qingdao University, Qingdao 266071, China
| | - Xue Xiao
- School of Basic Medicine, Medical College of Qingdao University, Qingdao 266071, China
| | - Mingxia Bi
- School of Basic Medicine, Medical College of Qingdao University, Qingdao 266071, China
| | - Qian Jiao
- School of Basic Medicine, Medical College of Qingdao University, Qingdao 266071, China
| | - Xi Chen
- School of Basic Medicine, Medical College of Qingdao University, Qingdao 266071, China
| | - Chunling Yan
- School of Basic Medicine, Medical College of Qingdao University, Qingdao 266071, China
| | - Xixun Du
- School of Basic Medicine, Medical College of Qingdao University, Qingdao 266071, China.
| | - Hong Jiang
- School of Health and Life Sciences, University of Health and Rehabilitation Sciences, Qingdao 266113, China; School of Basic Medicine, Medical College of Qingdao University, Qingdao 266071, China.
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Pesch V, Flores-Fernandez JM, Reithofer S, Ma L, Özdüzenciler P, Busch Y, Sriraman A, Wang Y, Amidian S, Kroepel CVM, Müller L, Lien Y, Rudtke O, Frieg B, Schröder GF, Wille H, Tamgüney G. Vaccination with structurally adapted fungal protein fibrils induces immunity to Parkinson's disease. Brain 2024; 147:1644-1652. [PMID: 38428032 PMCID: PMC11068327 DOI: 10.1093/brain/awae061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 01/05/2024] [Accepted: 02/10/2024] [Indexed: 03/03/2024] Open
Abstract
The pathological misfolding and aggregation of soluble α-synuclein into toxic oligomers and insoluble amyloid fibrils causes Parkinson's disease, a progressive age-related neurodegenerative disease for which there is no cure. HET-s is a soluble fungal protein that can form assembled amyloid fibrils in its prion state. We engineered HET-s(218-298) to form four different fibrillar vaccine candidates, each displaying a specific conformational epitope present on the surface of α-synuclein fibrils. Vaccination with these four vaccine candidates prolonged the survival of immunized TgM83+/- mice challenged with α-synuclein fibrils by 8% when injected into the brain to model brain-first Parkinson's disease or by 21% and 22% when injected into the peritoneum or gut wall, respectively, to model body-first Parkinson's disease. Antibodies from fully immunized mice recognized α-synuclein fibrils and brain homogenates from patients with Parkinson's disease, dementia with Lewy bodies and multiple system atrophy. Conformation-specific vaccines that mimic epitopes present only on the surface of pathological fibrils but not on soluble monomers, hold great promise for protection against Parkinson's disease, related synucleinopathies and other amyloidogenic protein misfolding disorders.
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Affiliation(s)
- Verena Pesch
- Institut für Biologische Informationsprozesse, Strukturbiochemie (IBI-7), Forschungszentrum Jülich, 52425 Jülich, Germany
| | - José Miguel Flores-Fernandez
- Department of Biochemistry and Centre for Prions and Protein Folding Diseases, University of Alberta, Edmonton, AB T6G 2M8, Canada
| | - Sara Reithofer
- Institut für Biologische Informationsprozesse, Strukturbiochemie (IBI-7), Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Liang Ma
- Institut für Biologische Informationsprozesse, Strukturbiochemie (IBI-7), Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Pelin Özdüzenciler
- Institut für Biologische Informationsprozesse, Strukturbiochemie (IBI-7), Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Yannick Busch
- Institut für Biologische Informationsprozesse, Strukturbiochemie (IBI-7), Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Aishwarya Sriraman
- Department of Biochemistry and Centre for Prions and Protein Folding Diseases, University of Alberta, Edmonton, AB T6G 2M8, Canada
| | - YongLiang Wang
- Department of Biochemistry and Centre for Prions and Protein Folding Diseases, University of Alberta, Edmonton, AB T6G 2M8, Canada
- Department of Cell Biology and Anatomy, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Sara Amidian
- Department of Biochemistry and Centre for Prions and Protein Folding Diseases, University of Alberta, Edmonton, AB T6G 2M8, Canada
| | - Chiara V M Kroepel
- Institut für Biologische Informationsprozesse, Strukturbiochemie (IBI-7), Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Laura Müller
- Institut für Biologische Informationsprozesse, Strukturbiochemie (IBI-7), Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Yi Lien
- Institut für Biologische Informationsprozesse, Strukturbiochemie (IBI-7), Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Olivia Rudtke
- Institut für Biologische Informationsprozesse, Strukturbiochemie (IBI-7), Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Benedikt Frieg
- Institut für Biologische Informationsprozesse, Strukturbiochemie (IBI-7), Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Gunnar F Schröder
- Institut für Biologische Informationsprozesse, Strukturbiochemie (IBI-7), Forschungszentrum Jülich, 52425 Jülich, Germany
- Physics Department, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany
| | - Holger Wille
- Department of Biochemistry and Centre for Prions and Protein Folding Diseases, University of Alberta, Edmonton, AB T6G 2M8, Canada
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB T6G 2M8, Canada
| | - Gültekin Tamgüney
- Institut für Biologische Informationsprozesse, Strukturbiochemie (IBI-7), Forschungszentrum Jülich, 52425 Jülich, Germany
- Institut für Physikalische Biologie, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany
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9
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Bruggeman A, Vandendriessche C, Hamerlinck H, De Looze D, Tate DJ, Vuylsteke M, De Commer L, Devolder L, Raes J, Verhasselt B, Laukens D, Vandenbroucke RE, Santens P. Safety and efficacy of faecal microbiota transplantation in patients with mild to moderate Parkinson's disease (GUT-PARFECT): a double-blind, placebo-controlled, randomised, phase 2 trial. EClinicalMedicine 2024; 71:102563. [PMID: 38686220 PMCID: PMC11056595 DOI: 10.1016/j.eclinm.2024.102563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 03/07/2024] [Accepted: 03/11/2024] [Indexed: 05/02/2024] Open
Abstract
Background Dysregulation of the gut microbiome has been implicated in Parkinson's disease (PD). This study aimed to evaluate the clinical effects and safety of a single faecal microbiota transplantation (FMT) in patients with early-stage PD. Methods The GUT-PARFECT trial, a single-centre randomised, double-blind, placebo-controlled trial was conducted at Ghent University Hospital between December 01, 2020 and December 12, 2022. Participants (aged 50-65 years, Hoehn and Yahr stage 2) were randomly assigned to receive nasojejunal FMT with either healthy donor stool or their own stool. Computer-generated randomisation was done in a 1:1 ratio through permutated-block scheduling. Treatment allocation was concealed for participants and investigators. The primary outcome measure at 12 months was the change in the Movement Disorders Society-Unified Parkinson's Disease Rating Scale (MDS-UPDRS) motor score obtained during off-medication evaluations. Intention-to-treat analysis was performed using a mixed model for repeated measures analysis. This completed trial is registered on ClinicalTrials.gov (NCT03808389). Findings Between December 2020 and December 2021, FMT procedures were conducted on 46 patients with PD: 22 in the healthy donor group and 24 in the placebo group. Clinical evaluations were performed at baseline, 3, 6, and 12 months post-FMT. Full data analysis was possible for 21 participants in the healthy donor group and 22 in the placebo group. After 12 months, the MDS-UPDRS motor score significantly improved by a mean of 5.8 points (95% CI -11.4 to -0.2) in the healthy donor group and by 2.7 points (-8.3 to 2.9) in the placebo group (p = 0.0235). Adverse events were limited to temporary abdominal discomfort. Interpretation Our findings suggested a single FMT induced mild, but long-lasting beneficial effects on motor symptoms in patients with early-stage PD. These findings highlight the potential of modulating the gut microbiome as a therapeutic approach and warrant a further exploration of FMT in larger cohorts of patients with PD in various disease stages. Funding Flemish PD patient organizations (VPL and Parkili), Research Foundation Flanders (FWO), Biocodex Microbiota Foundation.
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Affiliation(s)
- Arnout Bruggeman
- Department of Neurology, University Hospital Ghent, Ghent, Belgium
- Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
- VIB-UGent Center for Inflammation Research, VIB, Ghent, Belgium
- Faculty of Sciences, Ghent University, Ghent, Belgium
| | - Charysse Vandendriessche
- VIB-UGent Center for Inflammation Research, VIB, Ghent, Belgium
- Faculty of Sciences, Ghent University, Ghent, Belgium
| | - Hannelore Hamerlinck
- Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
- Department of Laboratory Medicine, Ghent University Hospital, Ghent, Belgium
| | - Danny De Looze
- Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
- Department of Gastroenterology, University Hospital Ghent, Ghent, Belgium
| | - David J. Tate
- Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
- Department of Gastroenterology, University Hospital Ghent, Ghent, Belgium
| | - Marnik Vuylsteke
- VIB-UGent Center for Inflammation Research, VIB, Ghent, Belgium
- Statistics for Biosciences, Gnomixx, Melle, Belgium
| | - Lindsey De Commer
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Leuven, Belgium
- VIB-KU Leuven Center for Microbiology, VIB, Leuven, Belgium
| | - Lindsay Devolder
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Leuven, Belgium
- VIB-KU Leuven Center for Microbiology, VIB, Leuven, Belgium
| | - Jeroen Raes
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Leuven, Belgium
- VIB-KU Leuven Center for Microbiology, VIB, Leuven, Belgium
| | - Bruno Verhasselt
- Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
- Department of Laboratory Medicine, Ghent University Hospital, Ghent, Belgium
| | - Debby Laukens
- Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
| | - Roosmarijn E. Vandenbroucke
- VIB-UGent Center for Inflammation Research, VIB, Ghent, Belgium
- Faculty of Sciences, Ghent University, Ghent, Belgium
| | - Patrick Santens
- Department of Neurology, University Hospital Ghent, Ghent, Belgium
- Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
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10
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Gallagher E, Hou C, Zhu Y, Hsieh CJ, Lee H, Li S, Xu K, Henderson P, Chroneos R, Sheldon M, Riley S, Luk KC, Mach RH, McManus MJ. Positron Emission Tomography with [ 18F]ROStrace Reveals Progressive Elevations in Oxidative Stress in a Mouse Model of Alpha-Synucleinopathy. Int J Mol Sci 2024; 25:4943. [PMID: 38732162 PMCID: PMC11084161 DOI: 10.3390/ijms25094943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 04/23/2024] [Accepted: 04/25/2024] [Indexed: 05/13/2024] Open
Abstract
The synucleinopathies are a diverse group of neurodegenerative disorders characterized by the accumulation of aggregated alpha-synuclein (aSyn) in vulnerable populations of brain cells. Oxidative stress is both a cause and a consequence of aSyn aggregation in the synucleinopathies; however, noninvasive methods for detecting oxidative stress in living animals have proven elusive. In this study, we used the reactive oxygen species (ROS)-sensitive positron emission tomography (PET) radiotracer [18F]ROStrace to detect increases in oxidative stress in the widely-used A53T mouse model of synucleinopathy. A53T-specific elevations in [18F]ROStrace signal emerged at a relatively early age (6-8 months) and became more widespread within the brain over time, a pattern which paralleled the progressive development of aSyn pathology and oxidative damage in A53T brain tissue. Systemic administration of lipopolysaccharide (LPS) also caused rapid and long-lasting elevations in [18F]ROStrace signal in A53T mice, suggesting that chronic, aSyn-associated oxidative stress may render these animals more vulnerable to further inflammatory insult. Collectively, these results provide novel evidence that oxidative stress is an early and chronic process during the development of synucleinopathy and suggest that PET imaging with [18F]ROStrace holds promise as a means of detecting aSyn-associated oxidative stress noninvasively.
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Affiliation(s)
- Evan Gallagher
- Department of Anesthesia and Critical Care Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA; (E.G.)
- Department of Radiology, University of Pennsylvania, Philadelphia, PA 19104, USA; (C.H.); (R.H.M.)
| | - Catherine Hou
- Department of Radiology, University of Pennsylvania, Philadelphia, PA 19104, USA; (C.H.); (R.H.M.)
| | - Yi Zhu
- Department of Anesthesia and Critical Care Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA; (E.G.)
| | - Chia-Ju Hsieh
- Department of Radiology, University of Pennsylvania, Philadelphia, PA 19104, USA; (C.H.); (R.H.M.)
| | - Hsiaoju Lee
- Department of Radiology, University of Pennsylvania, Philadelphia, PA 19104, USA; (C.H.); (R.H.M.)
| | - Shihong Li
- Department of Radiology, University of Pennsylvania, Philadelphia, PA 19104, USA; (C.H.); (R.H.M.)
| | - Kuiying Xu
- Department of Radiology, University of Pennsylvania, Philadelphia, PA 19104, USA; (C.H.); (R.H.M.)
| | - Patrick Henderson
- Department of Anesthesia and Critical Care Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA; (E.G.)
| | - Rea Chroneos
- Department of Anesthesia and Critical Care Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA; (E.G.)
| | - Malkah Sheldon
- Department of Anesthesia and Critical Care Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA; (E.G.)
| | - Shaipreeah Riley
- Department of Anesthesia and Critical Care Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA; (E.G.)
| | - Kelvin C. Luk
- Department of Pathology and Laboratory Medicine, Institute on Aging and Center for Neurodegenerative Disease Research, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Robert H. Mach
- Department of Radiology, University of Pennsylvania, Philadelphia, PA 19104, USA; (C.H.); (R.H.M.)
| | - Meagan J. McManus
- Department of Anesthesia and Critical Care Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA; (E.G.)
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11
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Menozzi E, Schapira AHV. The Gut Microbiota in Parkinson Disease: Interactions with Drugs and Potential for Therapeutic Applications. CNS Drugs 2024; 38:315-331. [PMID: 38570412 PMCID: PMC11026199 DOI: 10.1007/s40263-024-01073-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/14/2024] [Indexed: 04/05/2024]
Abstract
The concept of a 'microbiota-gut-brain axis' has recently emerged as an important player in the pathophysiology of Parkinson disease (PD), not least because of the reciprocal interaction between gut bacteria and medications. The gut microbiota can influence levodopa kinetics, and conversely, drugs administered for PD can influence gut microbiota composition. Through a two-step enzymatic pathway, gut microbes can decarboxylate levodopa to dopamine in the small intestine and then dehydroxylate it to m-tyramine, thus reducing availability. Inhibition of bacterial decarboxylation pathways could therefore represent a strategy to increase levodopa absorption. Other bacterial perturbations common in PD, such as small intestinal bacterial overgrowth and Helicobacter pylori infection, can also modulate levodopa metabolism, and eradication therapies may improve levodopa absorption. Interventions targeting the gut microbiota offer a novel opportunity to manage disabling motor complications and dopa-unresponsive symptoms. Mediterranean diet-induced changes in gut microbiota composition might improve a range of non-motor symptoms. Prebiotics can increase levels of short-chain fatty acid-producing bacteria and decrease pro-inflammatory species, with positive effects on clinical symptoms and levodopa kinetics. Different formulations of probiotics showed beneficial outcomes on constipation, with some of them improving dopamine levels; however, the most effective dosage and duration and long-term effects of these treatments remain unknown. Data from faecal microbiota transplantation studies are preliminary, but show encouraging trends towards improvement in both motor and non-motor outcomes.This article summarises the most up-to-date knowledge in pharmacomicrobiomics in PD, and discusses how the manipulation of gut microbiota represents a potential new therapeutic avenue for PD.
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Affiliation(s)
- Elisa Menozzi
- Department of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology, London, NW3 2PF, UK
- Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD, USA
| | - Anthony H V Schapira
- Department of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology, London, NW3 2PF, UK.
- Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD, USA.
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12
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Gu R, Pan J, Awan MUN, Sun X, Yan F, Bai L, Bai J. The major histocompatibility complex participates in Parkinson's disease. Pharmacol Res 2024; 203:107168. [PMID: 38583689 DOI: 10.1016/j.phrs.2024.107168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 03/23/2024] [Accepted: 04/02/2024] [Indexed: 04/09/2024]
Abstract
Parkinson's disease (PD) is a common neurodegenerative disease characterized by progressive loss of dopaminergic neurons in the substantia nigra and the aggregation of alpha-synuclein (α-syn). The central nervous system (CNS) has previously been considered as an immune-privileged area. However, studies have shown that the immune responses are involved in PD. The major histocompatibility complex (MHC) presents antigens from antigen-presenting cells (APCs) to T lymphocytes, immune responses will be induced. MHCs are expressed in microglia, astrocytes, and dopaminergic neurons. Single nucleotide polymorphisms in MHC are related to the risk of PD. The aggregated α-syn triggers the expression of MHCs by activating glia cells. CD4+ and CD8+ T lymphocytes responses and microglia activation are detected in brains of PD patients. In addiction immune responses further increase blood-brain barrier (BBB) permeability and T cell infiltration in PD. Thus, MHCs are involved in PD through participating in immune and inflammatory responses.
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Affiliation(s)
- Rou Gu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China; Medical School, Kunming University of Science and Technology, Kunming 650500, China
| | - Jianyu Pan
- Medical School, Kunming University of Science and Technology, Kunming 650500, China
| | - Maher Un Nisa Awan
- Medical School, Kunming University of Science and Technology, Kunming 650500, China; Department of Neurology, The Affiliated Hospital of Yunnan University, Kunming 650500, China
| | - Xiaowei Sun
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China; Medical School, Kunming University of Science and Technology, Kunming 650500, China
| | - Fang Yan
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China; Medical School, Kunming University of Science and Technology, Kunming 650500, China
| | - Liping Bai
- Medical School, Kunming University of Science and Technology, Kunming 650500, China
| | - Jie Bai
- Medical School, Kunming University of Science and Technology, Kunming 650500, China.
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13
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Zhang C, Bo R, Zhou T, Chen N, Yuan Y. The raphe nuclei are the early lesion site of gastric α-synuclein propagation to the substantia nigra. Acta Pharm Sin B 2024; 14:2057-2076. [PMID: 38799632 PMCID: PMC11119576 DOI: 10.1016/j.apsb.2024.01.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 12/14/2023] [Accepted: 01/05/2024] [Indexed: 05/29/2024] Open
Abstract
Parkinson's disease (PD) is a neurodegeneration disease with α-synuclein accumulated in the substantia nigra pars compacta (SNpc) and most of the dopaminergic neurons are lost in SNpc while patients are diagnosed with PD. Exploring the pathology at an early stage contributes to the development of the disease-modifying strategy. Although the "gut-brain" hypothesis is proposed to explain the underlying mechanism, where the earlier lesioned site in the brain of gastric α-synuclein and how α-synuclein further spreads are not fully understood. Here we report that caudal raphe nuclei (CRN) are the early lesion site of gastric α-synuclein propagating through the spinal cord, while locus coeruleus (LC) and substantia nigra pars compacta (SNpc) were further affected over a time frame of 7 months. Pathological α-synuclein propagation via CRN leads to neuron loss and disordered neuron activity, accompanied by abnormal motor and non-motor behavior. Potential neuron circuits are observed among CRN, LC, and SNpc, which contribute to the venerability of dopaminergic neurons in SNpc. These results show that CRN is the key region for the gastric α-synuclein spread to the midbrain. Our study provides valuable details for the "gut-brain" hypothesis and proposes a valuable PD model for future research on early PD intervention.
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Affiliation(s)
| | | | - Tiantian Zhou
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Chinese Academy of Medical Sciences & Peking Union Medical College Institute of Materia Medica, Beijing 100050, China
| | - Naihong Chen
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Chinese Academy of Medical Sciences & Peking Union Medical College Institute of Materia Medica, Beijing 100050, China
| | - Yuhe Yuan
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Chinese Academy of Medical Sciences & Peking Union Medical College Institute of Materia Medica, Beijing 100050, China
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14
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Kampmann M. Molecular and cellular mechanisms of selective vulnerability in neurodegenerative diseases. Nat Rev Neurosci 2024; 25:351-371. [PMID: 38575768 DOI: 10.1038/s41583-024-00806-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/01/2024] [Indexed: 04/06/2024]
Abstract
The selective vulnerability of specific neuronal subtypes is a hallmark of neurodegenerative diseases. In this Review, I summarize our current understanding of the brain regions and cell types that are selectively vulnerable in different neurodegenerative diseases and describe the proposed underlying cell-autonomous and non-cell-autonomous mechanisms. I highlight how recent methodological innovations - including single-cell transcriptomics, CRISPR-based screens and human cell-based models of disease - are enabling new breakthroughs in our understanding of selective vulnerability. An understanding of the molecular mechanisms that determine selective vulnerability and resilience would shed light on the key processes that drive neurodegeneration and point to potential therapeutic strategies to protect vulnerable cell populations.
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Affiliation(s)
- Martin Kampmann
- Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, CA, USA.
- Institute for Neurodegenerative Diseases, University of California, San Francisco, San Francisco, CA, USA.
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15
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Kalyanaraman B, Cheng G, Hardy M. Gut microbiome, short-chain fatty acids, alpha-synuclein, neuroinflammation, and ROS/RNS: Relevance to Parkinson's disease and therapeutic implications. Redox Biol 2024; 71:103092. [PMID: 38377788 PMCID: PMC10891329 DOI: 10.1016/j.redox.2024.103092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 02/01/2024] [Accepted: 02/15/2024] [Indexed: 02/22/2024] Open
Abstract
In this review, we explore how short-chain fatty acids (SCFAs) produced by the gut microbiome affect Parkinson's disease (PD) through their modulatory interactions with alpha-synuclein, neuroinflammation, and oxidative stress mediated by reactive oxygen and nitrogen species (ROS/RNS). In particular, SCFAs-such as acetate, propionate, and butyrate-are involved in gut-brain communication and can modulate alpha-synuclein aggregation, a hallmark of PD. The gut microbiome of patients with PD has lower levels of SCFAs than healthy individuals. Probiotics may be a potential strategy to restore SCFAs and alleviate PD symptoms, but the underlying mechanisms are not fully understood. Also in this review, we discuss how alpha-synuclein, present in the guts and brains of patients with PD, may induce neuroinflammation and oxidative stress via ROS/RNS. Alpha-synuclein is considered an early biomarker for PD and may link the gut-brain axis to the disease pathogenesis. Therefore, elucidating the role of SCFAs in the gut microbiome and their impact on alpha-synuclein-induced neuroinflammation in microglia and on ROS/RNS is crucial in PD pathogenesis and treatment.
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Affiliation(s)
- Balaraman Kalyanaraman
- Department of Biophysics, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI, 53226, United States.
| | - Gang Cheng
- Department of Biophysics, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI, 53226, United States
| | - Micael Hardy
- Aix-Marseille Univ, CNRS, ICR, UMR 7273, Marseille, 13013, France
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16
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Vilela C, Araújo B, Soares-Guedes C, Caridade-Silva R, Martins-Macedo J, Teixeira C, Gomes ED, Prudêncio C, Vieira M, Teixeira FG. From the Gut to the Brain: Is Microbiota a New Paradigm in Parkinson's Disease Treatment? Cells 2024; 13:770. [PMID: 38727306 PMCID: PMC11083070 DOI: 10.3390/cells13090770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 04/24/2024] [Accepted: 04/26/2024] [Indexed: 05/13/2024] Open
Abstract
Parkinson's disease (PD) is recognized as the second most prevalent primary chronic neurodegenerative disorder of the central nervous system. Clinically, PD is characterized as a movement disorder, exhibiting an incidence and mortality rate that is increasing faster than any other neurological condition. In recent years, there has been a growing interest concerning the role of the gut microbiota in the etiology and pathophysiology of PD. The establishment of a brain-gut microbiota axis is now real, with evidence denoting a bidirectional communication between the brain and the gut microbiota through metabolic, immune, neuronal, and endocrine mechanisms and pathways. Among these, the vagus nerve represents the most direct form of communication between the brain and the gut. Given the potential interactions between bacteria and drugs, it has been observed that the therapies for PD can have an impact on the composition of the microbiota. Therefore, in the scope of the present review, we will discuss the current understanding of gut microbiota on PD and whether this may be a new paradigm for treating this devastating disease.
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Affiliation(s)
- Cristiana Vilela
- Center for Translational Health and Medical Biotechnology Research (TBIO)/Health Research Network (RISE-Health), ESS, Polytechnic of Porto, R. Dr. António Bernardino de Almeida 400, 4200-072 Porto, Portugal; (C.V.); (C.S.-G.); (E.D.G.); (C.P.); (M.V.)
| | - Bruna Araújo
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (B.A.); (J.M.-M.)
- ICVS/3B’s Associate Lab, PT Government Associated Lab, 4710-057/4805-017 Braga/Guimarães, Portugal
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, R. Alfredo Allen 208, 4200-135 Porto, Portugal; (R.C.-S.); (C.T.)
| | - Carla Soares-Guedes
- Center for Translational Health and Medical Biotechnology Research (TBIO)/Health Research Network (RISE-Health), ESS, Polytechnic of Porto, R. Dr. António Bernardino de Almeida 400, 4200-072 Porto, Portugal; (C.V.); (C.S.-G.); (E.D.G.); (C.P.); (M.V.)
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, R. Alfredo Allen 208, 4200-135 Porto, Portugal; (R.C.-S.); (C.T.)
| | - Rita Caridade-Silva
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, R. Alfredo Allen 208, 4200-135 Porto, Portugal; (R.C.-S.); (C.T.)
| | - Joana Martins-Macedo
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (B.A.); (J.M.-M.)
- ICVS/3B’s Associate Lab, PT Government Associated Lab, 4710-057/4805-017 Braga/Guimarães, Portugal
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, R. Alfredo Allen 208, 4200-135 Porto, Portugal; (R.C.-S.); (C.T.)
| | - Catarina Teixeira
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, R. Alfredo Allen 208, 4200-135 Porto, Portugal; (R.C.-S.); (C.T.)
| | - Eduardo D. Gomes
- Center for Translational Health and Medical Biotechnology Research (TBIO)/Health Research Network (RISE-Health), ESS, Polytechnic of Porto, R. Dr. António Bernardino de Almeida 400, 4200-072 Porto, Portugal; (C.V.); (C.S.-G.); (E.D.G.); (C.P.); (M.V.)
| | - Cristina Prudêncio
- Center for Translational Health and Medical Biotechnology Research (TBIO)/Health Research Network (RISE-Health), ESS, Polytechnic of Porto, R. Dr. António Bernardino de Almeida 400, 4200-072 Porto, Portugal; (C.V.); (C.S.-G.); (E.D.G.); (C.P.); (M.V.)
| | - Mónica Vieira
- Center for Translational Health and Medical Biotechnology Research (TBIO)/Health Research Network (RISE-Health), ESS, Polytechnic of Porto, R. Dr. António Bernardino de Almeida 400, 4200-072 Porto, Portugal; (C.V.); (C.S.-G.); (E.D.G.); (C.P.); (M.V.)
| | - Fábio G. Teixeira
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (B.A.); (J.M.-M.)
- ICVS/3B’s Associate Lab, PT Government Associated Lab, 4710-057/4805-017 Braga/Guimarães, Portugal
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, R. Alfredo Allen 208, 4200-135 Porto, Portugal; (R.C.-S.); (C.T.)
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17
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Manoharan D, Wang LC, Chen YC, Li WP, Yeh CS. Catalytic Nanoparticles in Biomedical Applications: Exploiting Advanced Nanozymes for Therapeutics and Diagnostics. Adv Healthc Mater 2024:e2400746. [PMID: 38683107 DOI: 10.1002/adhm.202400746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 04/17/2024] [Indexed: 05/01/2024]
Abstract
Catalytic nanoparticles (CNPs) as heterogeneous catalyst reveals superior activity due to their physio-chemical features, such as high surface-to-volume ratio and unique optical, electric, and magnetic properties. The CNPs, based on their physio-chemical nature, can either increase the reactive oxygen species (ROS) level for tumor and antibacterial therapy or eliminate the ROS for cytoprotection, anti-inflammation, and anti-aging. In addition, the catalytic activity of nanozymes can specifically trigger a specific reaction accompanied by the optical feature change, presenting the feasibility of biosensor and bioimaging applications. Undoubtedly, CNPs play a pivotal role in pushing the evolution of technologies in medical and clinical fields, and advanced strategies and nanomaterials rely on the input of chemical experts to develop. Herein, a systematic and comprehensive review of the challenges and recent development of CNPs for biomedical applications is presented from the viewpoint of advanced nanomaterial with unique catalytic activity and additional functions. Furthermore, the biosafety issue of applying biodegradable and non-biodegradable nanozymes and future perspectives are critically discussed to guide a promising direction in developing span-new nanozymes and more intelligent strategies for overcoming the current clinical limitations.
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Affiliation(s)
- Divinah Manoharan
- Department of Chemistry, National Cheng Kung University, Tainan, 701, Taiwan
- Interdisciplinary Research Center on Material and Medicinal Chemistry, National Cheng Kung University, Tainan, 701, Taiwan
| | - Liu-Chun Wang
- Department of Chemistry, National Cheng Kung University, Tainan, 701, Taiwan
- Center of Applied Nanomedicine, National Cheng Kung University, Tainan, 701, Taiwan
| | - Ying-Chi Chen
- Department of Chemistry, National Cheng Kung University, Tainan, 701, Taiwan
| | - Wei-Peng Li
- Center of Applied Nanomedicine, National Cheng Kung University, Tainan, 701, Taiwan
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
- Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Chen-Sheng Yeh
- Department of Chemistry, National Cheng Kung University, Tainan, 701, Taiwan
- Interdisciplinary Research Center on Material and Medicinal Chemistry, National Cheng Kung University, Tainan, 701, Taiwan
- Center of Applied Nanomedicine, National Cheng Kung University, Tainan, 701, Taiwan
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18
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Dautan D, Paslawski W, Montejo SG, Doyon DC, Marangiu R, Kaplitt MG, Chen R, Dawson VL, Zhang X, Dawson TM, Svenningsson P. Gut-Initiated Alpha Synuclein Fibrils Drive Parkinson's Disease Phenotypes: Temporal Mapping of non-Motor Symptoms and REM Sleep Behavior Disorder. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.22.590542. [PMID: 38712208 PMCID: PMC11071367 DOI: 10.1101/2024.04.22.590542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Parkinson's disease (PD) is characterized by progressive motor as well as less recognized non-motor symptoms that arise often years before motor manifestation, including sleep and gastrointestinal disturbances. Despite the heavy burden on the patient's quality of life, these non-motor manifestations are poorly understood. To elucidate the temporal dynamics of the disease, we employed a mouse model involving injection of alpha-synuclein (αSyn) pre-formed fibrils (PFF) in the duodenum and antrum as a gut-brain model of Parkinsonism. Using anatomical mapping of αSyn-PFF propagation and behavioral and physiological characterizations, we unveil a correlation between post-injection time the temporal dynamics of αSyn propagation and non-motor/motor manifestations of the disease. We highlight the concurrent presence of αSyn aggregates in key brain regions, expressing acetylcholine or dopamine, involved in sleep duration, wakefulness, and particularly REM-associated atonia corresponding to REM behavioral disorder-like symptoms. This study presents a novel and in-depth exploration into the multifaceted nature of PD, unraveling the complex connections between α-synucleinopathies, gut-brain connectivity, and the emergence of non-motor phenotypes.
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Affiliation(s)
- Daniel Dautan
- Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
- Aligning Science Across Parkinson’s (ASAP) Collaborative Research Network, Chevy Chase, MD 20815, USA
| | - Wojciech Paslawski
- Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
- Aligning Science Across Parkinson’s (ASAP) Collaborative Research Network, Chevy Chase, MD 20815, USA
| | - Sergio G. Montejo
- Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
| | - Daniel C. Doyon
- Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
| | - Roberta Marangiu
- Aligning Science Across Parkinson’s (ASAP) Collaborative Research Network, Chevy Chase, MD 20815, USA
- Division of Neurosurgery, Department of Neurosurgery, New-York Hospital-Cornell Medical College, New York, NY, USA
| | - Michael G. Kaplitt
- Aligning Science Across Parkinson’s (ASAP) Collaborative Research Network, Chevy Chase, MD 20815, USA
- Division of Neurosurgery, Department of Neurosurgery, New-York Hospital-Cornell Medical College, New York, NY, USA
| | - Rong Chen
- Aligning Science Across Parkinson’s (ASAP) Collaborative Research Network, Chevy Chase, MD 20815, USA
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Valina L. Dawson
- Aligning Science Across Parkinson’s (ASAP) Collaborative Research Network, Chevy Chase, MD 20815, USA
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Department of Physiology, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
- Solomon H. Snyder Department of Neuroscience, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Xiaoaun Zhang
- Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
| | - Ted M. Dawson
- Aligning Science Across Parkinson’s (ASAP) Collaborative Research Network, Chevy Chase, MD 20815, USA
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Solomon H. Snyder Department of Neuroscience, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
- Department of Pharmacology and Molecular Sciences, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Per Svenningsson
- Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
- Aligning Science Across Parkinson’s (ASAP) Collaborative Research Network, Chevy Chase, MD 20815, USA
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19
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Wang Y, Xie D, Ma S, Shao N, Zhang X, Wang X. Exploring the common mechanism of vascular dementia and inflammatory bowel disease: a bioinformatics-based study. Front Immunol 2024; 15:1347415. [PMID: 38736878 PMCID: PMC11084673 DOI: 10.3389/fimmu.2024.1347415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 04/15/2024] [Indexed: 05/14/2024] Open
Abstract
Objective Emerging evidence has shown that gut diseases can regulate the development and function of the immune, metabolic, and nervous systems through dynamic bidirectional communication on the brain-gut axis. However, the specific mechanism of intestinal diseases and vascular dementia (VD) remains unclear. We designed this study especially, to further clarify the connection between VD and inflammatory bowel disease (IBD) from bioinformatics analyses. Methods We downloaded Gene expression profiles for VD (GSE122063) and IBD (GSE47908, GSE179285) from the Gene Expression Omnibus (GEO) database. Then individual Gene Set Enrichment Analysis (GSEA) was used to confirm the connection between the two diseases respectively. The common differentially expressed genes (coDEGs) were identified, and the STRING database together with Cytoscape software were used to construct protein-protein interaction (PPI) network and core functional modules. We identified the hub genes by using the Cytohubba plugin. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis were applied to identify pathways of coDEGs and hub genes. Subsequently, receiver operating characteristic (ROC) analysis was used to identify the diagnostic ability of these hub genes, and a training dataset was used to verify the expression levels of the hub genes. An alternative single-sample gene set enrichment (ssGSEA) algorithm was used to analyze immune cell infiltration between coDEGs and immune cells. Finally, the correlation between hub genes and immune cells was analyzed. Results We screened 167 coDEGs. The main articles of coDEGs enrichment analysis focused on immune function. 8 shared hub genes were identified, including PTPRC, ITGB2, CYBB, IL1B, TLR2, CASP1, IL10RA, and BTK. The functional categories of hub genes enrichment analysis were mainly involved in the regulation of immune function and neuroinflammatory response. Compared to the healthy controls, abnormal infiltration of immune cells was found in VD and IBD. We also found the correlation between 8 shared hub genes and immune cells. Conclusions This study suggests that IBD may be a new risk factor for VD. The 8 hub genes may predict the IBD complicated with VD. Immune-related coDEGS may be related to their association, which requires further research to prove.
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Affiliation(s)
- Yujiao Wang
- Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Daojun Xie
- Encephalopathy Center, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Shijia Ma
- Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Nan Shao
- Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Xiaoyan Zhang
- Anhui University of Chinese Medicine, Hefei, Anhui, China
| | - Xie Wang
- Anhui University of Chinese Medicine, Hefei, Anhui, China
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20
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Holtz AV, Fink A, Tamgüney G, Doblhammer G. Colonoscopy and Subsequent Risk of Parkinson's Disease. JOURNAL OF PARKINSON'S DISEASE 2024:JPD240017. [PMID: 38669559 DOI: 10.3233/jpd-240017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/28/2024]
Abstract
Background Parkinson's disease (PD) is caused by the misfolding and aggregation of α-synuclein in neurons into toxic oligomers and fibrils that have prion-like properties allowing them to infect healthy neurons and to be transmitted to animal models of PD by injection or oral exposure. Given α-synuclein fibrils' potential transmission on the gut-brain axis, α-synuclein may be transmitted through colonoscopy procedures. Objective This study examines a possible association between colonoscopy and PD. Methods Longitudinal health insurance data of 250,000 individuals aged 50+ from 2004-2019 was analyzed. Cox proportional hazard and competing risk models with death as a competing event were estimated to calculate the risk of PD. Colonoscopy was categorized as never receiving colonoscopy, colorectal cancer (CRC) screening without or with biopsy, destruction or excision (BDE), and diagnostic colonoscopy without or with BDE. Results We identified 6,422 new cases of PD among 221,582 individuals. The Cox model revealed a significantly increased risk of PD for patients who ever had a diagnostic colonoscopy without or with BDE (HR = 1.31; 95% CI: [1.23-1.40]; HR = 1.32 [1.22-1.42]) after adjustment for age and sex. After controlling for covariates and death, persons who ever underwent CRC screening had a 40% reduced risk of PD (CRHR = 0.60 [0.54-0.67]), while persons who underwent diagnostic colonoscopy had a 20% reduced risk of PD (CRHR = 0.81 [0.75-0.88]). Conclusions Colonoscopy does not increase the risk of PD, after adjusting for death and covariates. Individuals who underwent only CRC screening had the lowest risk of PD, which may be a result of a more health-conscious lifestyle.
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Affiliation(s)
- Anna-Victoria Holtz
- German Center for Neurodegenerative Diseases(DZNE), Demographic Studies, Bonn, Germany
- University of Rostock, Institute for Sociology and Demography, Rostock, Germany
| | - Anne Fink
- German Center for Neurodegenerative Diseases(DZNE), Demographic Studies, Bonn, Germany
| | - Gültekin Tamgüney
- Forschungszentrum Jülich, Institute of Biological Information Processing - Structural Biochemistry (IBI-7), Jülich, Germany
- Heinrich-Heine-Universität Düsseldorf, Mathematisch-Naturwissenschaftliche Fakultät, Institut für Physikalische Biologie, Düsseldorf, Germany
| | - Gabriele Doblhammer
- German Center for Neurodegenerative Diseases(DZNE), Demographic Studies, Bonn, Germany
- University of Rostock, Institute for Sociology and Demography, Rostock, Germany
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21
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Çamoğlu T, Yurttaş Z, Kına ÜY, Akkuş Süt P, Sahin F, Dursun E, Gezen-Ak D. Fibrillar Alpha-Synuclein Alters the Intracellular Chaperone Levels within Hours of Its Internalization. ACS OMEGA 2024; 9:17185-17194. [PMID: 38645348 PMCID: PMC11025075 DOI: 10.1021/acsomega.3c10036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 02/26/2024] [Accepted: 02/29/2024] [Indexed: 04/23/2024]
Abstract
Parkinson's disease (PD) is the second most prevalent neurodegenerative disorder worldwide. According to the Braak hypothesis, the disease spreads along specific neuroanatomical pathways. Studies indicate that fibrillar alpha-synuclein (F-αSyn) can propagate from cell-to-cell by following intercellular connections, leading to the selective death of certain cell groups like substantia nigra dopaminergic neurons and advancing the pathology. Internalized F-αSyn can be eliminated by lysosomes, proteasomes, or chaperones before it replicates inside the cell. Research has shown that F-αSyn can somehow escape from endosomes, lysosomes, and proteasomes and replicate itself. However, the impact of chaperones on intracellular levels during the initial hours of their internalization remains unknown. The present study investigates the effect of F-αSyn on chaperone levels within the first 6 and 12 h after internalization. Our findings showed that within the first 6 h, Hsc70 and Hsp90 levels were increased, while within 12 h, F-αSyn leads to a decrease or suppression of numerous intracellular chaperone levels. Exploring the pathological effects of PD on cells will contribute to identifying more targets for therapeutic interventions.
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Affiliation(s)
- Tugay Çamoğlu
- Brain
and Neurodegenerative Disorders Research Laboratories, Department
of Neuroscience, Institute of Neurological Sciences, Istanbul University-Cerrahpasa, Istanbul 34098, Turkey
| | - Zuhal Yurttaş
- Brain
and Neurodegenerative Disorders Research Laboratories, Department
of Neuroscience, Institute of Neurological Sciences, Istanbul University-Cerrahpasa, Istanbul 34098, Turkey
| | - Ümit Yaşar Kına
- Beykoz
Institute of Life Sciences and Biotechnology, Bezmialem Vakif University, Istanbul 34093, Turkey
| | - Pınar Akkuş Süt
- Department
of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Istanbul 34755, Turkey
| | - Fikrettin Sahin
- Department
of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Istanbul 34755, Turkey
| | - Erdinç Dursun
- Brain
and Neurodegenerative Disorders Research Laboratories, Department
of Neuroscience, Institute of Neurological Sciences, Istanbul University-Cerrahpasa, Istanbul 34098, Turkey
| | - Duygu Gezen-Ak
- Brain
and Neurodegenerative Disorders Research Laboratories, Department
of Neuroscience, Institute of Neurological Sciences, Istanbul University-Cerrahpasa, Istanbul 34098, Turkey
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22
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Cheslow L, Byrne M, Kopenhaver JS, Iacovitti L, Smeyne RJ, Snook AE, Waldman SA. GUCY2C signaling limits dopaminergic neuron vulnerability to toxic insults. NPJ Parkinsons Dis 2024; 10:83. [PMID: 38615030 PMCID: PMC11016112 DOI: 10.1038/s41531-024-00697-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 03/26/2024] [Indexed: 04/15/2024] Open
Abstract
Mitochondrial dysfunction and reactive oxygen species (ROS) accumulation within the substantia nigra pars compacta (SNpc) are central drivers of dopaminergic (DA) neuron death in Parkinson's disease (PD). Guanylyl cyclases and their second messenger cyclic (c)GMP support mitochondrial function, protecting against ROS and promoting cell survival in several tissues. However, the role of the guanylyl cyclase-cGMP axis in defining the vulnerability of DA neurons in the SNpc in PD remains unclear, in part due to the challenge of manipulating cGMP levels selectively in midbrain DA neurons. In that context, guanylyl cyclase C (GUCY2C), a receptor primarily expressed by intestinal epithelial cells, was discovered recently in midbrain DA neurons. Here, we demonstrate that GUCY2C promotes mitochondrial function, reducing oxidative stress and protecting DA neurons from degeneration in the 1-methyl-4-phenyl- 1,2,3,6-tetrahydropyridine (MPTP) mouse model. GUCY2C is overexpressed in the SNpc in PD patients and in mice treated with MPTP, possibly reflecting a protective response to oxidative stress. Moreover, cGMP signaling protects against oxidative stress, mitochondrial impairment, and cell death in cultured DA neurons. These observations reveal a previously unexpected role for the GUCY2C-cGMP signaling axis in controlling mitochondrial dysfunction and toxicity in SNpc DA neurons, highlighting the therapeutic potential of targeting DA neuron GUCY2C to prevent neurodegeneration in PD.
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Affiliation(s)
- Lara Cheslow
- Department of Pharmacology, Physiology, & Cancer Biology, Thomas Jefferson University, Philadelphia, PA, USA
- Department of Neurosciences, Thomas Jefferson University, Philadelphia, PA, USA
| | - Matthew Byrne
- Department of Neurosciences, Thomas Jefferson University, Philadelphia, PA, USA
| | - Jessica S Kopenhaver
- Department of Pharmacology, Physiology, & Cancer Biology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Lorraine Iacovitti
- Department of Neurosciences, Thomas Jefferson University, Philadelphia, PA, USA
| | - Richard J Smeyne
- Department of Neurosciences, Thomas Jefferson University, Philadelphia, PA, USA
| | - Adam E Snook
- Department of Pharmacology, Physiology, & Cancer Biology, Thomas Jefferson University, Philadelphia, PA, USA
- Department of Microbiology & Immunology, Thomas Jefferson University, Philadelphia, PA, USA
- Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA
| | - Scott A Waldman
- Department of Pharmacology, Physiology, & Cancer Biology, Thomas Jefferson University, Philadelphia, PA, USA.
- Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA.
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23
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Niso-Santano M, Fuentes JM, Galluzzi L. Immunological aspects of central neurodegeneration. Cell Discov 2024; 10:41. [PMID: 38594240 PMCID: PMC11004155 DOI: 10.1038/s41421-024-00666-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 03/02/2024] [Indexed: 04/11/2024] Open
Abstract
The etiology of various neurodegenerative disorders that mainly affect the central nervous system including (but not limited to) Alzheimer's disease, Parkinson's disease and Huntington's disease has classically been attributed to neuronal defects that culminate with the loss of specific neuronal populations. However, accumulating evidence suggests that numerous immune effector cells and the products thereof (including cytokines and other soluble mediators) have a major impact on the pathogenesis and/or severity of these and other neurodegenerative syndromes. These observations not only add to our understanding of neurodegenerative conditions but also imply that (at least in some cases) therapeutic strategies targeting immune cells or their products may mediate clinically relevant neuroprotective effects. Here, we critically discuss immunological mechanisms of central neurodegeneration and propose potential strategies to correct neurodegeneration-associated immunological dysfunction with therapeutic purposes.
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Affiliation(s)
- Mireia Niso-Santano
- Departamento de Bioquímica y Biología Molecular y Genética, Facultad de Enfermería y Terapia Ocupacional, Universidad de Extremadura, Cáceres, Spain.
- Centro de Investigación Biomédica en Red en Enfermedades Neurodegenerativas-Instituto de Salud Carlos III (CIBER-CIBERNED-ISCIII), Madrid, Spain.
- Instituto Universitario de Investigación Biosanitaria de Extremadura (INUBE), Cáceres, Spain.
| | - José M Fuentes
- Departamento de Bioquímica y Biología Molecular y Genética, Facultad de Enfermería y Terapia Ocupacional, Universidad de Extremadura, Cáceres, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Neurodegenerativas-Instituto de Salud Carlos III (CIBER-CIBERNED-ISCIII), Madrid, Spain
- Instituto Universitario de Investigación Biosanitaria de Extremadura (INUBE), Cáceres, Spain
| | - Lorenzo Galluzzi
- Department of Radiation Oncology, Weill Cornell Medical College, New York, NY, USA.
- Sandra and Edward Meyer Cancer Center, New York, NY, USA.
- Caryl and Israel Englander Institute for Precision Medicine, New York, NY, USA.
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24
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Hull A, Atilano ML, Gergi L, Kinghorn KJ. Lysosomal storage, impaired autophagy and innate immunity in Gaucher and Parkinson's diseases: insights for drug discovery. Philos Trans R Soc Lond B Biol Sci 2024; 379:20220381. [PMID: 38368939 PMCID: PMC10874704 DOI: 10.1098/rstb.2022.0381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 11/08/2023] [Indexed: 02/20/2024] Open
Abstract
Impairment of autophagic-lysosomal pathways is increasingly being implicated in Parkinson's disease (PD). GBA1 mutations cause the lysosomal storage disorder Gaucher disease (GD) and are the commonest known genetic risk factor for PD. GBA1 mutations have been shown to cause autophagic-lysosomal impairment. Defective autophagic degradation of unwanted cellular constituents is associated with several pathologies, including loss of normal protein homeostasis, particularly of α-synuclein, and innate immune dysfunction. The latter is observed both peripherally and centrally in PD and GD. Here, we will discuss the mechanistic links between autophagy and immune dysregulation, and the possible role of these pathologies in communication between the gut and brain in these disorders. Recent work in a fly model of neuronopathic GD (nGD) revealed intestinal autophagic defects leading to gastrointestinal dysfunction and immune activation. Rapamycin treatment partially reversed the autophagic block and reduced immune activity, in association with increased survival and improved locomotor performance. Alterations in the gut microbiome are a critical driver of neuroinflammation, and studies have revealed that eradication of the microbiome in nGD fly and mouse models of PD ameliorate brain inflammation. Following these observations, lysosomal-autophagic pathways, innate immune signalling and microbiome dysbiosis are discussed as potential therapeutic targets in PD and GD. This article is part of a discussion meeting issue 'Understanding the endo-lysosomal network in neurodegeneration'.
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Affiliation(s)
- Alexander Hull
- Department of Genetics, Evolution & Environment, Institute of Healthy Ageing, Darwin Building, Gower Street, London WC1E 6BT, UK
| | - Magda L Atilano
- Department of Genetics, Evolution & Environment, Institute of Healthy Ageing, Darwin Building, Gower Street, London WC1E 6BT, UK
| | - Laith Gergi
- Department of Genetics, Evolution & Environment, Institute of Healthy Ageing, Darwin Building, Gower Street, London WC1E 6BT, UK
| | - Kerri J Kinghorn
- Department of Genetics, Evolution & Environment, Institute of Healthy Ageing, Darwin Building, Gower Street, London WC1E 6BT, UK
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25
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Zhao J, Xia F, Jiao X, Lyu X. Long COVID and its association with neurodegenerative diseases: pathogenesis, neuroimaging, and treatment. Front Neurol 2024; 15:1367974. [PMID: 38638307 PMCID: PMC11024438 DOI: 10.3389/fneur.2024.1367974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 02/28/2024] [Indexed: 04/20/2024] Open
Abstract
Corona Virus disease 2019 (COVID-19), caused by the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), has presented unprecedented challenges to the world. Changes after acute COVID-19 have had a significant impact on patients with neurodegenerative diseases. This study aims to explore the mechanism of neurodegenerative diseases by examining the main pathways of central nervous system infection of SARS-CoV-2. Research has indicated that chronic inflammation and abnormal immune response are the primary factors leading to neuronal damage and long-term consequences of COVID-19. In some COVID-19 patients, the concurrent inflammatory response leads to increased release of pro-inflammatory cytokines, which may significantly impact the prognosis. Molecular imaging can accurately assess the severity of neurodegenerative diseases in patients with COVID-19 after the acute phase. Furthermore, the use of FDG-PET is advocated to quantify the relationship between neuroinflammation and psychiatric and cognitive symptoms in patients who have recovered from COVID-19. Future development should focus on aggressive post-infection control of inflammation and the development of targeted therapies that target ACE2 receptors, ERK1/2, and Ca2+.
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Affiliation(s)
- Jinyang Zhao
- Department of Radiology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Fan Xia
- Department of Radiology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Xue Jiao
- Department of Respiratory, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Xiaohong Lyu
- Department of Radiology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
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26
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Tao W, Zhang Y, Wang B, Nie S, Fang L, Xiao J, Wu Y. Advances in molecular mechanisms and therapeutic strategies for central nervous system diseases based on gut microbiota imbalance. J Adv Res 2024:S2090-1232(24)00124-3. [PMID: 38579985 DOI: 10.1016/j.jare.2024.03.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 03/12/2024] [Accepted: 03/29/2024] [Indexed: 04/07/2024] Open
Abstract
BACKGROUD Central nervous system (CNS) diseases pose a serious threat to human health, but the regulatory mechanisms and therapeutic strategies of CNS diseases need to be further explored. It has been demonstrated that the gut microbiota (GM) is closely related to CNS disease. GM structure disorders, abnormal microbial metabolites, intestinal barrier destruction and elevated inflammation exist in patients with CNS diseases and promote the development of CNS diseases. More importantly, GM remodeling alleviates CNS pathology to some extent. AIM OF REVIEW Here, we have summarized the regulatory mechanism of the GM in CNS diseases and the potential treatment strategies for CNS repair based on GM regulation, aiming to provide safer and more effective strategies for CNS repair from the perspective of GM regulation. KEY SCIENTIFIC CONCEPTS OF REVIEW The abundance and composition of GM is closely associated with the CNS diseases. On the basis of in-depth analysis of GM changes in mice with CNS disease, as well as the changes in its metabolites, therapeutic strategies, such as probiotics, prebiotics, and FMT, may be used to regulate GM balance and affect its microbial metabolites, thereby promoting the recovery of CNS diseases.
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Affiliation(s)
- Wei Tao
- The Institute of Life Sciences, Wenzhou University, Wenzhou 325035, China
| | - Yanren Zhang
- The Institute of Life Sciences, Wenzhou University, Wenzhou 325035, China
| | - Bingbin Wang
- The Institute of Life Sciences, Wenzhou University, Wenzhou 325035, China
| | - Saiqun Nie
- The Institute of Life Sciences, Wenzhou University, Wenzhou 325035, China
| | - Li Fang
- The Institute of Life Sciences, Wenzhou University, Wenzhou 325035, China
| | - Jian Xiao
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.
| | - Yanqing Wu
- The Institute of Life Sciences, Wenzhou University, Wenzhou 325035, China.
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27
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Li Y, Ren HX, Chi CY, Miao YB. Artificial Intelligence-Guided Gut-Microenvironment-Triggered Imaging Sensor Reveals Potential Indicators of Parkinson's Disease. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2307819. [PMID: 38569219 DOI: 10.1002/advs.202307819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 03/16/2024] [Indexed: 04/05/2024]
Abstract
The gut-brain axis has recently emerged as a crucial link in the development and progression of Parkinson's disease (PD). Dysregulation of the gut microbiota has been implicated in the pathogenesis of this disease, sparking growing interest in the quest for non-invasive biomarkers derived from the gut for early PD diagnosis. Herein, an artificial intelligence-guided gut-microenvironment-triggered imaging sensor (Eu-MOF@Au-Aptmer) to achieve non-invasive, accurate screening for various stages of PD is presented. The sensor works by analyzing α-Syn in the gut using deep learning algorithms. By monitoring changes in α-Syn, the sensor can predict the onset of PD with high accuracy. This work has the potential to revolutionize the diagnosis and treatment of PD by allowing for early intervention and personalized treatment plans. Moreover, it exemplifies the promising prospects of integrating artificial intelligence (AI) and advanced sensors in the monitoring and prediction of a broad spectrum of diseases and health conditions.
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Affiliation(s)
- Yiwei Li
- Department of Haematology, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, School of Medicine of University of Electronic Science and Technology of China, No. 32, West Section 2, First Ring Road, Qingyang District, Chengdu, 610000, China
- Institute of Communications Engineering & Department of Electrical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Hong-Xia Ren
- Sichuan Technology & Business College, Chengdu, 611800, China
| | - Chong-Yung Chi
- Institute of Communications Engineering & Department of Electrical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Yang-Bao Miao
- Department of Haematology, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, School of Medicine of University of Electronic Science and Technology of China, No. 32, West Section 2, First Ring Road, Qingyang District, Chengdu, 610000, China
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28
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Pellegrini C, Travagli RA. Gastrointestinal dysmotility in rodent models of Parkinson's disease. Am J Physiol Gastrointest Liver Physiol 2024; 326:G345-G359. [PMID: 38261717 DOI: 10.1152/ajpgi.00225.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 01/09/2024] [Accepted: 01/22/2024] [Indexed: 01/25/2024]
Abstract
Multiple studies describe prodromal, nonmotor dysfunctions that affect the quality of life of patients who subsequently develop Parkinson's disease (PD). These prodromal dysfunctions comprise a wide array of autonomic issues, including severe gastrointestinal (GI) motility disorders such as dysphagia, delayed gastric emptying, and chronic constipation. Indeed, strong evidence from studies in humans and animal models suggests that the GI tract and its neural, mainly vagal, connection to the central nervous system (CNS) could have a major role in the etiology of PD. In fact, misfolded α-synuclein aggregates that form Lewy bodies and neurites, i.e., the histological hallmarks of PD, are detected in the enteric nervous system (ENS) before clinical diagnosis of PD. The aim of the present review is to provide novel insights into the pathogenesis of GI dysmotility in PD, focusing our attention on functional, neurochemical, and molecular alterations in animal models.
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Affiliation(s)
- Carolina Pellegrini
- Unit of Histology and Medical Embryology, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
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29
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Chen C, Kumbhar R, Wang H, Yang X, Gadhave K, Rastegar C, Kimura Y, Behensky A, Kotha S, Kuo G, Katakam S, Jeong D, Wang L, Wang A, Chen R, Zhang S, Jin L, Workman CJ, Vignali DAA, Pletinkova O, Jia H, Peng W, Nauen DW, Wong PC, Redding‐Ochoa J, Troncoso JC, Ying M, Dawson VL, Dawson TM, Mao X. Lymphocyte-Activation Gene 3 Facilitates Pathological Tau Neuron-to-Neuron Transmission. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2303775. [PMID: 38327094 PMCID: PMC11040377 DOI: 10.1002/advs.202303775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 11/27/2023] [Indexed: 02/09/2024]
Abstract
The spread of prion-like protein aggregates is a common driver of pathogenesis in various neurodegenerative diseases, including Alzheimer's disease (AD) and related Tauopathies. Tau pathologies exhibit a clear progressive spreading pattern that correlates with disease severity. Clinical observation combined with complementary experimental studies has shown that Tau preformed fibrils (PFF) are prion-like seeds that propagate pathology by entering cells and templating misfolding and aggregation of endogenous Tau. While several cell surface receptors of Tau are known, they are not specific to the fibrillar form of Tau. Moreover, the underlying cellular mechanisms of Tau PFF spreading remain poorly understood. Here, it is shown that the lymphocyte-activation gene 3 (Lag3) is a cell surface receptor that binds to PFF but not the monomer of Tau. Deletion of Lag3 or inhibition of Lag3 in primary cortical neurons significantly reduces the internalization of Tau PFF and subsequent Tau propagation and neuron-to-neuron transmission. Propagation of Tau pathology and behavioral deficits induced by injection of Tau PFF in the hippocampus and overlying cortex are attenuated in mice lacking Lag3 selectively in neurons. These results identify neuronal Lag3 as a receptor of pathologic Tau in the brain,and for AD and related Tauopathies, a therapeutic target.
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30
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Thomasi B, Valdetaro L, Gulbransen B, Tavares-Gomes AL. Neuroimmune Connectomes in the Gut and Their Implications in Parkinson's Disease. Mol Neurobiol 2024; 61:2081-2098. [PMID: 37840070 DOI: 10.1007/s12035-023-03679-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 09/28/2023] [Indexed: 10/17/2023]
Abstract
The gastrointestinal tract is the largest immune organ and it receives dense innervation from intrinsic (enteric) and extrinsic (sympathetic, parasympathetic, and somatosensory) neurons. The immune and neural systems of the gut communicate with each other and their interactions shape gut defensive mechanisms and neural-controlled gut functions such as motility and secretion. Changes in neuroimmune interactions play central roles in the pathogenesis of diseases such as Parkinson's disease (PD), which is a multicentric disorder that is heterogeneous in its manifestation and pathogenesis. Non-motor and premotor symptoms of PD are common in the gastrointestinal tract and the gut is considered a potential initiation site for PD in some cases. How the enteric nervous system and neuroimmune signaling contribute to PD disease progression is an emerging area of interest. This review focuses on intestinal neuroimmune loops such as the neuroepithelial unit, enteric glial cells and their immunomodulatory effects, anti-inflammatory cholinergic signaling and the relationship between myenteric neurons and muscularis macrophages, and the role of α-synuclein in gut immunity. Special consideration is given to the discussion of intestinal neuroimmune connectomes during PD and their possible implications for various aspects of the disease.
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Affiliation(s)
- Beatriz Thomasi
- Department of Physiology, Michigan State University, Biomedical and Physical Sciences Building - Gulbransen lab, 567, Wilson Rd, Room 3199, East Lansing, MI, USA.
| | - Luisa Valdetaro
- Department of Molecular Pathobiology, NYU College of Dentistry, New York, NY, USA
| | - Brian Gulbransen
- Department of Physiology, Michigan State University, Biomedical and Physical Sciences Building - Gulbransen lab, 567, Wilson Rd, Room 3199, East Lansing, MI, USA
| | - Ana Lúcia Tavares-Gomes
- Programa de Pós-Graduação Em Neurociências, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil
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Duan WX, Wang F, Liu JY, Liu CF. Relationship Between Short-chain Fatty Acids and Parkinson's Disease: A Review from Pathology to Clinic. Neurosci Bull 2024; 40:500-516. [PMID: 37755674 PMCID: PMC11003953 DOI: 10.1007/s12264-023-01123-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 05/15/2023] [Indexed: 09/28/2023] Open
Abstract
Parkinson's disease (PD) is a complicated neurodegenerative disease, characterized by the accumulation of α-synuclein (α-syn) in Lewy bodies and neurites, and massive loss of midbrain dopamine neurons. Increasing evidence suggests that gut microbiota and microbial metabolites are involved in the development of PD. Among these, short-chain fatty acids (SCFAs), the most abundant microbial metabolites, have been proven to play a key role in brain-gut communication. In this review, we analyze the role of SCFAs in the pathology of PD from multiple dimensions and summarize the alterations of SCFAs in PD patients as well as their correlation with motor and non-motor symptoms. Future research should focus on further elucidating the role of SCFAs in neuroinflammation, as well as developing novel strategies employing SCFAs and their derivatives to treat PD.
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Affiliation(s)
- Wen-Xiang Duan
- Department of Neurology and Clinical Research Center of Neurological Disease, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, China
| | - Fen Wang
- Department of Neurology and Clinical Research Center of Neurological Disease, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, China
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou, 215123, China
| | - Jun-Yi Liu
- Department of Neurology, Dushu Lake Hospital affiliated to Soochow University, Suzhou, 215125, China.
| | - Chun-Feng Liu
- Department of Neurology and Clinical Research Center of Neurological Disease, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, China.
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou, 215123, China.
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Smith R, Hovren H, Bowser R, Bakkar N, Garruto R, Ludolph A, Ravits J, Gaertner L, Murphy D, Lebovitz R. Misfolded alpha-synuclein in amyotrophic lateral sclerosis: Implications for diagnosis and treatment. Eur J Neurol 2024; 31:e16206. [PMID: 38270442 DOI: 10.1111/ene.16206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 11/30/2023] [Accepted: 12/28/2023] [Indexed: 01/26/2024]
Abstract
BACKGROUND Alpha-synuclein (α-Syn) oligomers and fibrils have been shown to augment the aggregation of TAR DNA-binding Protein 43 (TDP-43) monomers in vitro, supporting the idea that TDP-43 proteinopathies such as ALS may be modulated by the presence of toxic forms of α-Syn. Recently, parkinsonian features were reported in a study of European patients and Lewy bodies have been demonstrated pathologically in a similar series of patients. Based on these and other considerations, we sought to determine whether seed-competent α-Syn can be identified in spinal fluid of patients with ALS including familial, sporadic, and Guamanian forms of the disease. METHODS Based on the finding that α-Syn has been found to be a prion-like protein, we have utilized a validated α-Synuclein seed amplification assay to determine if seed-competent α-Syn could be detected in the spinal fluid of patients with ALS. RESULTS Toxic species of α-Syn were detected in CSF in 18 of 127 ALS patients, 5 of whom were from Guam. Two out of twenty six samples from patients with C9orf72 variant ALS had positive seed-amplification assays (SAAs). No positive tests were noted in superoxide dismutase type 1 ALS subjects (n = 14). The SAA was negative in 31 control subjects. CONCLUSIONS Our findings suggest that a sub-group of ALS occurs in which self-replicating α-Syn is detectable and likely contributes to its pathogenesis. This finding may have implications for the diagnosis and treatment of this disorder.
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Affiliation(s)
- Richard Smith
- Center for Neurologic Study, La Jolla, California, USA
| | - Hanna Hovren
- Amprion Clinical Laboratory, San Diego, California, USA
| | - Robert Bowser
- Barrow Neurological Institute, Phoenix, Arizona, USA
| | - Nadine Bakkar
- Barrow Neurological Institute, Phoenix, Arizona, USA
| | | | | | - John Ravits
- University of California, San Diego, La Jolla, California, USA
| | - Lia Gaertner
- Bay Area Lyme Disease Foundation, Portola Valley, California, USA
| | - Davan Murphy
- Center for Neurologic Study, La Jolla, California, USA
| | - Russ Lebovitz
- Amprion Clinical Laboratory, San Diego, California, USA
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Aburto MR, Cryan JF. Gastrointestinal and brain barriers: unlocking gates of communication across the microbiota-gut-brain axis. Nat Rev Gastroenterol Hepatol 2024; 21:222-247. [PMID: 38355758 DOI: 10.1038/s41575-023-00890-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/20/2023] [Indexed: 02/16/2024]
Abstract
Crosstalk between gut and brain has long been appreciated in health and disease, and the gut microbiota is a key player in communication between these two distant organs. Yet, the mechanisms through which the microbiota influences development and function of the gut-brain axis remain largely unknown. Barriers present in the gut and brain are specialized cellular interfaces that maintain strict homeostasis of different compartments across this axis. These barriers include the gut epithelial barrier, the blood-brain barrier and the blood-cerebrospinal fluid barrier. Barriers are ideally positioned to receive and communicate gut microbial signals constituting a gateway for gut-microbiota-brain communication. In this Review, we focus on how modulation of these barriers by the gut microbiota can constitute an important channel of communication across the gut-brain axis. Moreover, barrier malfunction upon alterations in gut microbial composition could form the basis of various conditions, including often comorbid neurological and gastrointestinal disorders. Thus, we should focus on unravelling the molecular and cellular basis of this communication and move from simplistic framing as 'leaky gut'. A mechanistic understanding of gut microbiota modulation of barriers, especially during critical windows of development, could be key to understanding the aetiology of gastrointestinal and neurological disorders.
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Affiliation(s)
- María R Aburto
- APC Microbiome Ireland, University College Cork, Cork, Ireland.
- Department of Anatomy and Neuroscience, School of Medicine, University College Cork, Cork, Ireland.
| | - John F Cryan
- APC Microbiome Ireland, University College Cork, Cork, Ireland
- Department of Anatomy and Neuroscience, School of Medicine, University College Cork, Cork, Ireland
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Hu J, He K, Yang Y, Huang C, Dou Y, Wang H, Zhang G, Wang J, Niu C, Bi G, Zhang L, Zhu S. Amino acid formula induces microbiota dysbiosis and depressive-like behavior in mice. Cell Rep 2024; 43:113817. [PMID: 38412095 DOI: 10.1016/j.celrep.2024.113817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 11/24/2023] [Accepted: 02/01/2024] [Indexed: 02/29/2024] Open
Abstract
Amino acid formula (AAF) is increasingly consumed in infants with cow's milk protein allergy; however, the long-term influences on health are less described. In this study, we established a mouse model by subjecting neonatal mice to an amino acid diet (AAD) to mimic the feeding regimen of infants on AAF. Surprisingly, AAD-fed mice exhibited dysbiotic microbiota and increased neuronal activity in both the intestine and brain, as well as gastrointestinal peristalsis disorders and depressive-like behavior. Furthermore, fecal microbiota transplantation from AAD-fed mice or AAF-fed infants to recipient mice led to elevated neuronal activations and exacerbated depressive-like behaviors compared to that from normal chow-fed mice or cow's-milk-formula-fed infants, respectively. Our findings highlight the necessity to avoid the excessive use of AAF, which may influence the neuronal development and mental health of children.
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Affiliation(s)
- Ji Hu
- Key Laboratory of Immune Response and Immunotherapy, Center for Advanced Interdisciplinary Science and Biomedicine of IHM, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China; The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, China
| | - Kaixin He
- Key Laboratory of Immune Response and Immunotherapy, Center for Advanced Interdisciplinary Science and Biomedicine of IHM, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China; The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, China
| | - Yifei Yang
- School of Data Science, University of Science and Technology of China, Hefei, China
| | - Chuan Huang
- Key Laboratory of Immune Response and Immunotherapy, Center for Advanced Interdisciplinary Science and Biomedicine of IHM, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Yiping Dou
- Key Laboratory of Immune Response and Immunotherapy, Center for Advanced Interdisciplinary Science and Biomedicine of IHM, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Hao Wang
- Key Laboratory of Immune Response and Immunotherapy, Center for Advanced Interdisciplinary Science and Biomedicine of IHM, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Guorong Zhang
- Key Laboratory of Immune Response and Immunotherapy, Center for Advanced Interdisciplinary Science and Biomedicine of IHM, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China; The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, China
| | - Jingyuan Wang
- Key Laboratory of Immune Response and Immunotherapy, Center for Advanced Interdisciplinary Science and Biomedicine of IHM, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Chaoshi Niu
- The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, China
| | - Guoqiang Bi
- Key Laboratory of Immune Response and Immunotherapy, Center for Advanced Interdisciplinary Science and Biomedicine of IHM, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Lan Zhang
- The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, China.
| | - Shu Zhu
- Key Laboratory of Immune Response and Immunotherapy, Center for Advanced Interdisciplinary Science and Biomedicine of IHM, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China; The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, China; School of Data Science, University of Science and Technology of China, Hefei, China.
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Bali P, Lal P, Sivapuram MS, Kutikuppala LVS, Avti P, Chanana A, Kumar S, Anand A. Mind over Microbes: Investigating the Interplay between Lifestyle Factors, Gut Microbiota, and Brain Health. Neuroepidemiology 2024:1-23. [PMID: 38531341 DOI: 10.1159/000538416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 03/08/2024] [Indexed: 03/28/2024] Open
Abstract
BACKGROUND The gut microbiota (GM) of the human body comprises several species of microorganisms. This microorganism plays a significant role in the physiological and pathophysiological processes of various human diseases. METHODS The literature review includes studies that describe causative factors that influence GM. The GM is sensitive to various factors like circadian rhythms, environmental agents, physical activity, nutrition, and hygiene that together impact the functioning and composition of the gut microbiome. This affects the health of the host, including the psycho-neural aspects, due to the interconnectivity between the brain and the gut. Hence, this paper examines the relationship of GM with neurodegenerative disorders in the context of these aforesaid factors. CONCLUSION Future studies that identify the regulatory pathways associated with gut microbes can provide a causal link between brain degeneration and the gut at a molecular level. Together, this review could be helpful in designing preventive and treatment strategies aimed at GM, so that neurodegenerative diseases can be treated.
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Affiliation(s)
- Parul Bali
- Department of Biophysics, Postgraduate Institute of Medical Education and Research, Chandigarh, India
- Department of Neuroscience, University of Florida, Gainesville, Florida, USA
| | - Parth Lal
- Advance Pediatric Centre, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Madhava Sai Sivapuram
- Department of General Medicine, Dr. Pinnamaneni Siddhartha Institute of Medical Sciences and Research Foundation, Peda Avutapalli, India
| | | | - Pramod Avti
- Department of Biophysics, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | | | - Saurabh Kumar
- CCRYN-Collaborative Centre for Mind Body Intervention through Yoga, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Akshay Anand
- CCRYN-Collaborative Centre for Mind Body Intervention through Yoga, Postgraduate Institute of Medical Education and Research, Chandigarh, India
- Neuroscience Research Lab, Department of Neurology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
- Centre for Cognitive Science and Phenomenology, Panjab University, Chandigarh, India
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Yu L, Hu X, Xu R, Zhao Y, Xiong L, Ai J, Wang X, Chen X, Ba Y, Xing Z, Guo C, Mi S, Wu X. Piperine promotes PI3K/AKT/mTOR-mediated gut-brain autophagy to degrade α-Synuclein in Parkinson's disease rats. JOURNAL OF ETHNOPHARMACOLOGY 2024; 322:117628. [PMID: 38158101 DOI: 10.1016/j.jep.2023.117628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 12/11/2023] [Accepted: 12/19/2023] [Indexed: 01/03/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Piper longum L., a medicinal and food homologous herb, has a traditional history of use in treating gastrointestinal and neurological disorders. Piperine (PIP) the main alkaloid of P. longum, exists neuroprotective effects on various animal models of Parkinson's disease (PD). Nevertheless, the underlying mechanism, particularly the role of PIP in promoting gut-brain autophagy for α-Synuclein (α-Syn) degradation in PD, remains incompletely understood. AIM OF THE STUDY To explore the role of PIP in regulating the gut-brain autophagy signaling pathway to reduce α-Syn levels in both the colon and substantia nigra (SN) of PD model rats. MATERIALS AND METHODS Behavioral experiments were conducted to assess the impact of PIP on 6-hydroxydopamine (6-OHDA)-induced PD rats. The intestinal microbiome composition and intestinal metabolites were analyzed by metagenomics and GC-MS/MS. The auto-phagosomes were visualized by transmission electron microscopy. Immunohistochemistry, immunofluorescence, and western blotting were performed to assess the levels of tyrosine hydroxylase (TH), α-Syn, LC3II/LC3I, p62, and the PI3K/AKT/mTOR pathway in both the SN and colon of the rats. The pathway-related inhibitor and agonist were used to verify the autophagy mechanism in the SH-SY5Y cells overexpressing A53T mutant α-Syn (A53T-α-Syn). RESULTS PIP improved autonomic movement and gastrointestinal dysfunctions, reduced α-Syn aggregation and attenuated the loss of dopaminergic neurons in 6-OHDA-induced PD rats. After oral administration of PIP, the radio of LC3II/LC3I increased and the expression of p62 was degraded, as well as the phosphorylation levels of PI3K, AKT and mTOR decreased in the SN and colon of rats. The effect of PIP on reducing A53T-α-Syn through the activation of the PI3K/AKT/mTOR-mediated autophagy pathway was further confirmed in A53T-α-Syn transgenic SH-SY5Y cells. This effect could be inhibited by the autophagy inhibitor bafilomycin A1 and the PI3K agonist 740 Y-P. CONCLUSIONS Our findings suggested that PIP could protect neurons by activating autophagy to degrade α-Syn in the SN and colon, which were related to the suppression of PIP on the activation of PI3K/AKT/mTOR signaling pathway.
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Affiliation(s)
- Lan Yu
- Department of Pharmacy, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, 100091, China
| | - Xiaolu Hu
- Beijing Key Lab of TCM Collateral Disease Theory Research, School of Traditional Chinese Medicine, Capital Medical University, Beijing, 100069, China
| | - Rongrong Xu
- Department of Pharmacy, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230031, China
| | - Yimeng Zhao
- Beijing Key Lab of TCM Collateral Disease Theory Research, School of Traditional Chinese Medicine, Capital Medical University, Beijing, 100069, China
| | - Lijuan Xiong
- Beijing Key Lab of TCM Collateral Disease Theory Research, School of Traditional Chinese Medicine, Capital Medical University, Beijing, 100069, China
| | - Jiaxuan Ai
- Beijing Key Lab of TCM Collateral Disease Theory Research, School of Traditional Chinese Medicine, Capital Medical University, Beijing, 100069, China
| | - Xing Wang
- Beijing Key Lab of TCM Collateral Disease Theory Research, School of Traditional Chinese Medicine, Capital Medical University, Beijing, 100069, China
| | - Xiaoqing Chen
- Beijing Key Lab of TCM Collateral Disease Theory Research, School of Traditional Chinese Medicine, Capital Medical University, Beijing, 100069, China
| | - Yinying Ba
- Beijing Key Lab of TCM Collateral Disease Theory Research, School of Traditional Chinese Medicine, Capital Medical University, Beijing, 100069, China
| | - Zhikai Xing
- Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences/China National Center for Bioinformation, Beijing, 100101, China
| | - Chongye Guo
- Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences/China National Center for Bioinformation, Beijing, 100101, China
| | - Shuangli Mi
- Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences/China National Center for Bioinformation, Beijing, 100101, China.
| | - Xia Wu
- Beijing Key Lab of TCM Collateral Disease Theory Research, School of Traditional Chinese Medicine, Capital Medical University, Beijing, 100069, China.
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Jia L, Xiao L, Fu Y, Shao Z, Jing Z, Yuan J, Xie Y, Guo J, Wang Y, Geng W. Neuroprotective effects of probiotics on anxiety- and depression-like disorders in stressed mice by modulating tryptophan metabolism and the gut microbiota. Food Funct 2024; 15:2895-2905. [PMID: 38404190 DOI: 10.1039/d3fo03897a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
Anxiety- and depression-like behaviors are commonly observed clinical features of depression and many other mental disorders. Recent evidence has revealed the crucial role of the microbiota-gut-brain axis in the bidirectional communication between the gastrointestinal tract and the central nervous system. Supplementation with psychobiotics may provide a novel approach for the adjunctive treatment of mental disorders by regulating the intestinal microecology. We isolated and identified a novel probiotic, Lactiplantibacillus plantarum D-9 (D-9), from traditional Chinese fermented foods in our previous work, which exhibited a high yield of gamma-aminobutyric acid (GABA). Herein, it was proved that the oral administration of D-9 could alleviate the depression- and anxiety-like behaviors of Chronic Unpredicted Mild Stress (CUMS) mice, and show non-toxicity or side-effects in the mice. Physiological and biochemical analyses demonstrated that D-9 regulated tryptophan metabolism, the HPA-axis and inflammation in CUMS mice. Moreover, D-9 modulated the structure and composition of the gut microbiota, leading to an increase in the relative abundance of Ligilactobacillus murinus and Lactobacillus johnsonii, and a decrease in the levels of Kineothrix alysoides and Helicobacter bilis compared to those in CUMS mice. Our work demonstrates that D-9 alleviated anxiety- and depression-like disorders in CUMS mice by modulating tryptophan metabolism and the gut microbiota. These findings provide an innovative strategy for the intervention and treatment of depressive disorders.
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Affiliation(s)
- Longgang Jia
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin, 300457, P. R. China.
| | - Ling Xiao
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin, 300457, P. R. China.
| | - Yao Fu
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin, 300457, P. R. China.
| | - Zhen Shao
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin, 300457, P. R. China.
| | - Zhaoxuan Jing
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin, 300457, P. R. China.
| | - Jiahu Yuan
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin, 300457, P. R. China.
| | - Yufeng Xie
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin, 300457, P. R. China.
- College of Food Science and Engineering, Harbin University, Harbin 150086, P. R. China
| | - Jun Guo
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin, 300457, P. R. China.
| | - Yanping Wang
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin, 300457, P. R. China.
| | - Weitao Geng
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin, 300457, P. R. China.
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Décarie-Spain L, Hayes AMR, Lauer LT, Kanoski SE. The gut-brain axis and cognitive control: A role for the vagus nerve. Semin Cell Dev Biol 2024; 156:201-209. [PMID: 36803834 PMCID: PMC10427741 DOI: 10.1016/j.semcdb.2023.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 02/07/2023] [Indexed: 02/18/2023]
Abstract
Survival requires the integration of external information and interoceptive cues to effectively guide advantageous behaviors, particularly foraging and other behaviors that promote energy acquisition and consumption. The vagus nerve acts as a critical relay between the abdominal viscera and the brain to convey metabolic signals. This review synthesizes recent findings from rodent models and humans revealing the impact of vagus nerve signaling from the gut on the control of higher-order neurocognitive domains, including anxiety, depression, reward motivation, and learning and memory. We propose a framework where meal consumption engages gastrointestinal tract-originating vagal afferent signaling that functions to alleviate anxiety and depressive-like states, while also promoting motivational and memory functions. These concurrent processes serve to favor the encoding of meal-relevant information into memory storage, thus facilitating future foraging behaviors. Modulation of these neurocognitive domains by vagal tone is also discussed in the context of pathological conditions, including the use of transcutaneous vagus nerve stimulation for the treatment of anxiety disorders, major depressive disorder, and dementia-associated memory impairments. Collectively, these findings highlight the contributions of gastrointestinal vagus nerve signaling to the regulation of neurocognitive processes that shape various adaptive behavioral responses.
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Affiliation(s)
- Léa Décarie-Spain
- Human and Evolutionary Biology Section, Department of Biological Sciences, Dornsife College of Letters, Arts and Sciences, University of Southern California, 3616 Trousdale Pkwy, Los Angeles, CA 90089, USA
| | - Anna M R Hayes
- Human and Evolutionary Biology Section, Department of Biological Sciences, Dornsife College of Letters, Arts and Sciences, University of Southern California, 3616 Trousdale Pkwy, Los Angeles, CA 90089, USA
| | - Logan Tierno Lauer
- Human and Evolutionary Biology Section, Department of Biological Sciences, Dornsife College of Letters, Arts and Sciences, University of Southern California, 3616 Trousdale Pkwy, Los Angeles, CA 90089, USA
| | - Scott E Kanoski
- Human and Evolutionary Biology Section, Department of Biological Sciences, Dornsife College of Letters, Arts and Sciences, University of Southern California, 3616 Trousdale Pkwy, Los Angeles, CA 90089, USA; Neuroscience Graduate Program, University of Southern California, 3641Watt Way, Los Angeles, CA 90089, USA.
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39
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Iwaniak P, Owe-Larsson M, Urbańska EM. Microbiota, Tryptophan and Aryl Hydrocarbon Receptors as the Target Triad in Parkinson's Disease-A Narrative Review. Int J Mol Sci 2024; 25:2915. [PMID: 38474162 DOI: 10.3390/ijms25052915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 02/22/2024] [Accepted: 02/26/2024] [Indexed: 03/14/2024] Open
Abstract
In the era of a steadily increasing lifespan, neurodegenerative diseases among the elderly present a significant therapeutic and socio-economic challenge. A properly balanced diet and microbiome diversity have been receiving increasing attention as targets for therapeutic interventions in neurodegeneration. Microbiota may affect cognitive function, neuronal survival and death, and gut dysbiosis was identified in Parkinson's disease (PD). Tryptophan (Trp), an essential amino acid, is degraded by microbiota and hosts numerous compounds with immune- and neuromodulating properties. This broad narrative review presents data supporting the concept that microbiota, the Trp-kynurenine (KYN) pathway and aryl hydrocarbon receptors (AhRs) form a triad involved in PD. A disturbed gut-brain axis allows the bidirectional spread of pro-inflammatory molecules and α-synuclein, which may contribute to the development/progression of the disease. We suggest that the peripheral levels of kynurenines and AhR ligands are strongly linked to the Trp metabolism in the gut and should be studied together with the composition of the microbiota. Such an approach can clearly delineate the sub-populations of PD patients manifesting with a disturbed microbiota-Trp-KYN-brain triad, who would benefit from modifications in the Trp metabolism. Analyses of the microbiome, Trp-KYN pathway metabolites and AhR signaling may shed light on the mechanisms of intestinal distress and identify new targets for the diagnosis and treatment in early-stage PD. Therapeutic interventions based on the combination of a well-defined food regimen, Trp and probiotics seem of potential benefit and require further experimental and clinical research.
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Affiliation(s)
- Paulina Iwaniak
- Department of Experimental and Clinical Pharmacology, Medical University of Lublin, 20-059 Lublin, Poland
| | - Maja Owe-Larsson
- Department of Histology and Embryology, Center of Biostructure Research, Medical University of Warsaw, Chałubińskiego 5, 02-004 Warsaw, Poland
- Laboratory of Center for Preclinical Research, Department of Experimental and Clinical Physiology, Medical University of Warsaw, Banacha 1B, 02-097 Warsaw, Poland
| | - Ewa M Urbańska
- Department of Experimental and Clinical Pharmacology, Medical University of Lublin, 20-059 Lublin, Poland
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40
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Ali A, Dou T, Holman AP, Hung A, Osborne L, Pickett D, Rodriguez A, Zhaliazka K, Kurouski D. The influence of zwitterionic and anionic phospholipids on protein aggregation. Biophys Chem 2024; 306:107174. [PMID: 38211368 DOI: 10.1016/j.bpc.2024.107174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 01/05/2024] [Accepted: 01/05/2024] [Indexed: 01/13/2024]
Abstract
The progressive aggregation of misfolded proteins is the underlying molecular cause of numerous pathologies including Parkinson's disease and injection and transthyretin amyloidosis. A growing body of evidence indicates that protein deposits detected in organs and tissues of patients diagnosed with such pathologies contain fragments of lipid membranes. In vitro experiments also showed that lipid membranes could strongly change the aggregation rate of amyloidogenic proteins, as well as alter the secondary structure and toxicity of oligomers and fibrils formed in their presence. In this review, the effect of large unilamellar vesicles (LUVs) composed of zwitterionic and anionic phospholipids on the aggregation rate of insulin, lysozyme, transthyretin (TTR) and α- synuclein (α-syn) will be discussed. The manuscript will also critically review the most recent findings on the lipid-induced changes in the secondary structure of protein oligomers and fibrils, as well as reveal the extent to which lipids could alter the toxicity of protein aggregates formed in their presence.
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Affiliation(s)
- Abid Ali
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States
| | - Tianyi Dou
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States
| | - Aidan P Holman
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States; Department of Entomology, Texas A&M University, College Station, TX 77843, United States
| | - Andrew Hung
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States
| | - Luke Osborne
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States
| | - Davis Pickett
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States
| | - Axell Rodriguez
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States
| | - Kiryl Zhaliazka
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States
| | - Dmitry Kurouski
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, United States; Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, United States.
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Saleh MA, Amer-Sarsour F, Berant A, Pasmanik-Chor M, Kobo H, Sharabi Y, Vatine GD, Ashkenazi A. Chronic and acute exposure to rotenone reveals distinct Parkinson's disease-related phenotypes in human iPSC-derived peripheral neurons. Free Radic Biol Med 2024; 213:164-173. [PMID: 38246514 DOI: 10.1016/j.freeradbiomed.2024.01.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Accepted: 01/12/2024] [Indexed: 01/23/2024]
Abstract
Peripheral autonomic nervous system (P-ANS) dysfunction is a critical non-motor phenotype of Parkinson's disease (PD). The majority of PD cases are sporadic and lack identified PD-associated genes involved. Epidemiological and animal model studies suggest an association with pesticides and other environmental toxins. However, the cellular mechanisms underlying toxin induced P-ANS dysfunctions remain unclear. Here, we mapped the global transcriptome changes in human induced pluripotent stem cell (iPSC) derived P-ANS sympathetic neurons during inhibition of the mitochondrial respiratory chain by the PD-related pesticide, rotenone. We revealed distinct transcriptome profiles between acute and chronic exposure to rotenone. In the acute stage, there was a down regulation of specific cation channel genes, known to mediate electrophysiological activity, while in the chronic stage, the human P-ANS neurons exhibited dysregulation of anti-apoptotic and Golgi apparatus-related pathways. Moreover, we identified the sodium voltage-gated channel subunit SCN3A/Nav1.3 as a potential biomarker in human P-ANS neurons associated with PD. Our analysis of the rotenone-altered coding and non-coding transcriptome of human P-ANS neurons may thus provide insight into the pathological signaling events in the sympathetic neurons during PD progression.
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Affiliation(s)
- Mahmood Ali Saleh
- The Department of Physiology and Cell Biology, Faculty of Health Sciences, Ben-Gurion University of the Negev, 8410501, Beer Sheva, Israel; The Regenerative Medicine and Stem Cell (RMSC) Research Center, Ben-Gurion University of the Negev, 8410501, Beer Sheva, Israel
| | - Fatima Amer-Sarsour
- The Department of Cell and Developmental Biology, Faculty of Medicine, Tel Aviv University, 6997801, Tel Aviv, Israel
| | - Asaf Berant
- The Department of Physiology and Cell Biology, Faculty of Health Sciences, Ben-Gurion University of the Negev, 8410501, Beer Sheva, Israel; The Regenerative Medicine and Stem Cell (RMSC) Research Center, Ben-Gurion University of the Negev, 8410501, Beer Sheva, Israel
| | - Metsada Pasmanik-Chor
- Bioinformatics Unit, George Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, 69978, Israel
| | - Hila Kobo
- Genomics Research Unit, George Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, 69978, Israel
| | - Yehonatan Sharabi
- Hypertension Unit, Department of Medicine, Sheba Medical Center, Tel Hashomer and Faculty of Medicine, Tel Aviv University, Israel
| | - Gad D Vatine
- The Department of Physiology and Cell Biology, Faculty of Health Sciences, Ben-Gurion University of the Negev, 8410501, Beer Sheva, Israel; The Regenerative Medicine and Stem Cell (RMSC) Research Center, Ben-Gurion University of the Negev, 8410501, Beer Sheva, Israel.
| | - Avraham Ashkenazi
- The Department of Cell and Developmental Biology, Faculty of Medicine, Tel Aviv University, 6997801, Tel Aviv, Israel; Sagol School of Neuroscience, Tel Aviv University, 6997801, Tel Aviv, Israel.
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Wang J, Dai L, Chen S, Zhang Z, Fang X, Zhang Z. Protein-protein interactions regulating α-synuclein pathology. Trends Neurosci 2024; 47:209-226. [PMID: 38355325 DOI: 10.1016/j.tins.2024.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 12/15/2023] [Accepted: 01/21/2024] [Indexed: 02/16/2024]
Abstract
Parkinson's disease (PD) is a neurodegenerative disease characterized by the degeneration of dopaminergic neurons in the substantia nigra pars compacta (SNpc) and the formation of Lewy bodies (LBs). The main proteinaceous component of LBs is aggregated α-synuclein (α-syn). However, the mechanisms underlying α-syn aggregation are not yet fully understood. Converging lines of evidence indicate that, under certain pathological conditions, various proteins can interact with α-syn and regulate its aggregation. Understanding these protein-protein interactions is crucial for unraveling the molecular mechanisms contributing to PD pathogenesis. In this review we provide an overview of the current knowledge on protein-protein interactions that regulate α-syn aggregation. Additionally, we briefly summarize the methods used to investigate the influence of protein-protein interactions on α-syn aggregation and propagation.
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Affiliation(s)
- Jiannan Wang
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Lijun Dai
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Sichun Chen
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Zhaohui Zhang
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Xin Fang
- Department of Neurology, the First Affiliated Hospital of Nanchang University, Nanchang 330000, China
| | - Zhentao Zhang
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan 430060, China; TaiKang Center for Life and Medical Sciences, Wuhan University, Wuhan 430000, China.
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Yamakado H, Takahashi R. Experimental Animal Models of Prodromal Parkinson's Disease. JOURNAL OF PARKINSON'S DISEASE 2024:JPD230393. [PMID: 38427504 DOI: 10.3233/jpd-230393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/03/2024]
Abstract
There is an estimated 35-45% loss of striatal dopamine at the time of diagnosis of Parkinson's disease (PD), and cases clinically diagnosed in the early stages may already be pathologically in advanced stages. Recent large-scale clinical trials of disease-modifying therapies (DMT) also suggest the necessity of targeting patients at earlier stages of the disease. From this perspective, the prodromal phase of PD is currently the focus of attention, emphasizing the need for a prodromal mouse model that accurately reflects the pathophysiology, along with early biomarkers. To establish prodromal animal model of PD with high face validity that reflects the disease state, the model must possess high construct validity that accurately incorporates clinical and pathological features in the prodromal phase. Furthermore, as a preclinical model of DMT, the model must possess high predictive validity to accurately evaluate the response to intervention. This review provides an overview of animal models which reflect the characteristics of prodromal PD, including alpha-synuclein (aS) accumulation and associated early non-motor symptoms, with a focus on the aS propagation model and genetic model. In addition, we discuss the challenges associated with these models. The genetic model often fails to induce motor symptoms, while aS propagation models skip the crucial step of initial aS aggregate formation, thereby not fully replicating the entire natural course of the disease. Identifying factors that induce the transition from prodromal to symptomatic phase is important as a preclinical model for DMT to prevent or delay the onset of the disease.
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Affiliation(s)
- Hodaka Yamakado
- Department of Therapeutics for Multiple System Atrophy, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Ryosuke Takahashi
- Department of Neurology, Kyoto University Graduate School of Medicine, Kyoto, Japan
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Girardi G, Zumpano D, Raybould H, Seker E. Microfluidic compartmentalization of rat vagal afferent neurons to model gut-brain axis. Bioelectron Med 2024; 10:3. [PMID: 38378575 PMCID: PMC10880301 DOI: 10.1186/s42234-023-00140-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 12/27/2023] [Indexed: 02/22/2024] Open
Abstract
BACKGROUND Vagal afferent neurons represent the key neurosensory branch of the gut-brain axis, which describes the bidirectional communication between the gastrointestinal system and the brain. These neurons are important for detecting and relaying sensory information from the periphery to the central nervous system to modulate feeding behavior, metabolism, and inflammation. Confounding variables complicate the process of isolating the role of the vagal afferents in mediating these physiological processes. Therefore, we developed a microfluidic model of the sensory branch of the gut-brain axis. We show that this microfluidic model successfully compartmentalizes the cell body and neurite terminals of the neurons, thereby simulates the anatomical layout of these neurons to more accurately study physiologically-relevant processes. METHODS We implemented a primary rat vagal afferent neuron culture into a microfluidic platform consisting of two concentric chambers interconnected with radial microchannels. The microfluidic platform separated cell bodies from neurite terminals of vagal afferent neurons. We then introduced physiologically-relevant gastrointestinal effector molecules at the nerve terminals and assessed their retrograde transport along the neurite or capacity to elicit an electrophysiological response using live cell calcium imaging. RESULTS The angle of microchannel outlets dictated the probability of neurites growing into a chamber versus tracking along chamber walls. When the neurite terminals were exposed to fluorescently-labeled cholera toxin subunit B, the proteins were taken up and retrogradely transported along the neurites over the course of 24 h. Additionally, mechanical perturbation (e.g., rinsing) of the neurite terminals significantly increased intracellular calcium concentration in the distal soma. Finally, membrane-displayed receptor for capsaicin was expressed and trafficked along newly projected neurites, as revealed by confocal microscopy. CONCLUSIONS In this work, we developed a microfluidic device that can recapitulate the anatomical layout of vagal afferent neurons in vitro. We demonstrated two physiologically-relevant applications of the platforms: retrograde transport and electrophysiological response. We expect this tool to enable controlled studies on the role of vagal afferent neurons in the gut-brain axis.
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Affiliation(s)
- Gregory Girardi
- Department of Biomedical Engineering, University of California - Davis, Davis, CA, 95616, USA
| | - Danielle Zumpano
- Department of Anatomy, Physiology, and Cell Biology, University of California - Davis, Davis, CA, 95616, USA
| | - Helen Raybould
- Department of Anatomy, Physiology, and Cell Biology, University of California - Davis, Davis, CA, 95616, USA
| | - Erkin Seker
- Department of Electrical and Computer Engineering, University of California - Davis, Davis, CA, 95616, USA.
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Mills KA, Phillips O, Mahajan A. Hope vs. Hype I: Spreading alpha-synuclein explains cognitive deficits in Parkinson disease. Parkinsonism Relat Disord 2024:106042. [PMID: 38365523 DOI: 10.1016/j.parkreldis.2024.106042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 02/09/2024] [Indexed: 02/18/2024]
Abstract
The Parkinson Study Group (PSG) gathered North American experts in Parkinson disease during the 9th Annual Symposium on "Shaping the Management of Parkinson Disease: Debating Current Controversies". Debaters were tasked with agree or disagree positions to a particular prompt. This is the first in three-part series of "Hype vs. Hope" debates involving current trends and advances in Parkinson disease. With the prompt of "Spreading alpha-synuclein explains cognitive deficits in Parkinson disease," Dr. Kelly Mills, MD, MHS was tasked with the "agree" stance and Dr. Abhimanyu Mahajan, MD, MHS was tasked with the "disagree" stance. The following point-of-view article is an adaptation of this debate.
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Affiliation(s)
- Kelly A Mills
- Johns Hopkins Department of Neurology, Baltimore, MD600 N. Wolfe Street, Meyer 6-181D, 21287, United States.
| | - Oliver Phillips
- Geisel School of Medicine at Dartmouth, Hanover, NH, 18 Old Etna Road, 03756, United States.
| | - Abhimanyu Mahajan
- The University of Cincinnati James J. and Joan A. Gardner Family Center for Parkinson's Disease and Movement Disorders, OH, 260 Stetson St., Suite 2300, Cincinnati, 45219, United States.
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Li FR, Yu Y, Du YM, Kong L, Liu Y, Wang JH, Chen MH, Liu M, Zhang ZX, Li XT, Ju RJ. Borneol-Modified Schisandrin B Micelles Cross the Blood-Brain Barrier To Treat Alzheimer's Disease in Aged Mice. ACS Chem Neurosci 2024; 15:593-607. [PMID: 38214579 DOI: 10.1021/acschemneuro.3c00625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2024] Open
Abstract
Objective: Schisandrin B (Sch B) is a bioactive dibenzocyclooctadiene derizative that is prevalent in the fruit of Schisandra chinensis. Numerous studies have demonstrated that Sch B has a neuroprotective action by reducing oxidative stress and effectively preventing inflammation. It follows that Sch B is a potential treatment for Alzheimer's disease (AD). However, the drug's solubility, bioavailability, and lower permeability of the blood-brain barrier (BBB) can all reduce its efficacy during the therapy process. Therefore, this study constructed borneol-modified schisandrin B micelles (Bor-Sch B-Ms), which increase brain targeting by accurately delivering medications to the brain, effectively improving bioavailability. High therapeutic efficacy has been achieved at the pathological site. Methods: Bor-Sch B-Ms were prepared using the thin film dispersion approach in this article. On the one hand, to observe the targeting effect of borneol, we constructed a blood-brain barrier (BBB) model in vitro and studied the ability of micelles to cross the BBB. On the other hand, the distribution of micelle drugs and their related pharmacological effects on neuroinflammation, oxidative stress, and neuronal damage were studied through in vivo administration in mice. Results: In vitro studies have demonstrated that the drug uptake of bEnd.3 cells was increased by the borneol alteration on the surface of the nano micelles, implying that Bor-Sch B-Ms can promote the therapeutic effect of N2a cells. This could result in more medicines entering the BBB. In addition, in vivo studies revealed that the distribution and circulation time of medications in the brain tissue were significantly higher than those in other groups, making it more suitable for the treatment of central nervous system diseases. Conclusion: As a novel nanodrug delivery system, borneol modified schisandrin B micelles have promising research prospects in the treatment of Alzheimer's disease.
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Affiliation(s)
- Feng-Rui Li
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian 116600, China
| | - Yang Yu
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian 116600, China
| | - Yu-Meng Du
- Beijing Key Laboratory of Enze Biomass Fine Chemicals, Beijing Institute of Petrochemical Technology, Qingyuan Road 19, Beijing 102617, China
| | - Liang Kong
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian 116600, China
| | - Yang Liu
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian 116600, China
| | - Jia-Hua Wang
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian 116600, China
| | - Mu-Han Chen
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian 116600, China
| | - Mo Liu
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian 116600, China
| | - Zi-Xu Zhang
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian 116600, China
| | - Xue-Tao Li
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian 116600, China
| | - Rui-Jun Ju
- Beijing Key Laboratory of Enze Biomass Fine Chemicals, Beijing Institute of Petrochemical Technology, Qingyuan Road 19, Beijing 102617, China
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47
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Wang S, An N, Wang Y, Li Y, Li H, Bai Y. Knowledge mapping of prodromal Parkinson's disease: A bibliometric review and analysis (2000-2023). Medicine (Baltimore) 2024; 103:e36985. [PMID: 38306521 PMCID: PMC10843421 DOI: 10.1097/md.0000000000036985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 12/22/2023] [Indexed: 02/04/2024] Open
Abstract
The prodromal period of Parkinson's disease (PD) is currently a hot topic in PD research. However, no bibliometric analysis has been conducted in this research field. This study aimed to provide a comprehensive overview of the status, hotspots, and trends in the prodromal period of PD using bibliometrics. CiteSpace and visualization of similarities viewer were used to analyze articles and reviews on the prodromal period of PD in the Web of Science Core Collection (WoSCC) database. We analyzed the data on countries, institutions, journals, authors, keywords, and cited references. In total, 909 articles from 65 countries, including the United States (n = 265, 29.15%) and Germany (n = 174, 19.14%), were included. The number of articles and reviews related to the prodromal period of PD has increased yearly. The University of Tubingen (n = 45, 4.95%), McGill University (n = 33, 3.63%), and University of London (n = 33, 3.63%) were the research institutions with the most published studies. Movement Disorders is the journal with the largest number of published papers (n = 98, 10.8%) and the most cited publications (co-citation = 7035). These publications are from 4681 authors, with Berg (n = 49, 5.39%) and Postuma (n = 40, 4.40%) publishing the most publications, and Postuma's study (n = 1206) having the most citations. Studying the nonmotor symptoms of PD precursors is a major topic in this research field. This is the first bibliometric study to comprehensively summarize the research trends and developments in the prodromal period of PD. This information identifies recent research frontiers and hotspots and provides a reference for scholars studying the prodromal period of PD.
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Affiliation(s)
- Shun Wang
- Department of Acupuncture and Moxibustion, The First Affiliated Hospital of Heilongjiang University of Traditional Chinese Medicine, Harbin, China
| | - Ning An
- Second Clinical Medical College, Heilongjiang University of Traditional Chinese Medicine, Heilongjiang, China
| | - Yulin Wang
- Department of Science and Technology, Heilongjiang University of Traditional Chinese Medicine, Heilongjiang, China
| | - Yuan Li
- Department of Acupuncture and Moxibustion, The First Affiliated Hospital of Harbin Medical University, Heilongjiang, China
| | - Hailong Li
- Department of Acupuncture and Moxibustion, Heilongjiang Academy of Traditional Chinese Medicine, Heilongjiang, China
| | - Yan Bai
- Department of Acupuncture and Moxibustion, Heilongjiang Academy of Traditional Chinese Medicine, Institute of Acupuncture and Moxibustion, Heilongjiang, China
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Hu C, Yan Y, Jin Y, Yang J, Xi Y, Zhong Z. Decoding the Cellular Trafficking of Prion-like Proteins in Neurodegenerative Diseases. Neurosci Bull 2024; 40:241-254. [PMID: 37755677 PMCID: PMC10838874 DOI: 10.1007/s12264-023-01115-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 07/02/2023] [Indexed: 09/28/2023] Open
Abstract
The accumulation and spread of prion-like proteins is a key feature of neurodegenerative diseases (NDs) such as Alzheimer's disease, Parkinson's disease, or Amyotrophic Lateral Sclerosis. In a process known as 'seeding', prion-like proteins such as amyloid beta, microtubule-associated protein tau, α-synuclein, silence superoxide dismutase 1, or transactive response DNA-binding protein 43 kDa, propagate their misfolded conformations by transforming their respective soluble monomers into fibrils. Cellular and molecular evidence of prion-like propagation in NDs, the clinical relevance of their 'seeding' capacities, and their levels of contribution towards disease progression have been intensively studied over recent years. This review unpacks the cyclic prion-like propagation in cells including factors of aggregate internalization, endo-lysosomal leaking, aggregate degradation, and secretion. Debates on the importance of the role of prion-like protein aggregates in NDs, whether causal or consequent, are also discussed. Applications lead to a greater understanding of ND pathogenesis and increased potential for therapeutic strategies.
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Affiliation(s)
- Chenjun Hu
- Department of Neurology of the Second Affiliated Hospital and Department of Human Anatomy, Histology and Embryology, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Yiqun Yan
- Department of Neurology of the Second Affiliated Hospital and Department of Human Anatomy, Histology and Embryology, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Yanhong Jin
- Department of Neurology of the Second Affiliated Hospital and Department of Human Anatomy, Histology and Embryology, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Jun Yang
- Department of Physiology and Department of Cardiology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Yongmei Xi
- Division of Human Reproduction and Developmental Genetics, Women's Hospital and Institute of Genetics, Zhejiang University School of Medicine, Hangzhou, 310006, China.
| | - Zhen Zhong
- Department of Neurology of the Second Affiliated Hospital and Department of Human Anatomy, Histology and Embryology, Zhejiang University School of Medicine, Hangzhou, 310058, China.
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Cara-Esteban M, Marín MP, Martínez-Alonso E, Martínez-Bellver S, Teruel-Martí V, Martínez-Menárguez JA, Tomás M. The Golgi complex of dopaminergic enteric neurons is fragmented in a hemiparkinsonian rat model. Microsc Res Tech 2024; 87:373-386. [PMID: 37855309 DOI: 10.1002/jemt.24442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 09/14/2023] [Accepted: 10/08/2023] [Indexed: 10/20/2023]
Abstract
Since gastrointestinal disorders are early consequences of Parkinson's disease (PD), this disease is clearly not restricted to the central nervous system (CNS), but also significantly affects the enteric nervous system (ENS). Large aggregates of the protein α-synuclein forming Lewy bodies, the prototypical cytopathological marker of this disease, have been observed in enteric nervous plexuses. However, their value in early prognosis is controversial. The Golgi complex (GC) of nigral neurons appears fragmented in Parkinson's disease, a characteristic common in most neurodegenerative diseases. In addition, the distribution and levels of regulatory proteins such as Rabs and SNAREs are altered, suggesting that PD is a membrane traffic-related pathology. Whether the GC of enteric dopaminergic neurons is affected by the disease has not yet been analyzed. In the present study, dopaminergic neurons in colon nervous plexuses behave as nigral neurons in a hemiparkinsonian rat model based on the injection of the toxin 6-OHDA. Their GCs are fragmented, and some regulatory proteins' distribution and expression levels are altered. The putative mechanisms of the transmission of the neurotoxin to the ENS are discussed. Our results support the possibility that GC structure and the level of some proteins, especially syntaxin 5, could be helpful as early indicators of the disease. RESEARCH HIGHLIGHTS: The Golgi complexes of enteric dopaminergic neurons appear fragmented in a Parkinson's disease rat model. Our results support the hypothesis that the Golgi complex structure and levels of Rab1 and syntaxin 5 could be helpful as early indicators of the disease.
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Affiliation(s)
- Mireia Cara-Esteban
- Department of Human Anatomy and Embryology, Medical School, Universitat de Valencia, Valencia, Spain
- Cell Biology Platform, Health Research Institute La Fe, Valencia, Spain
| | - María Pilar Marín
- Cell Biology Platform, Health Research Institute La Fe, Valencia, Spain
| | - Emma Martínez-Alonso
- Department of Cell Biology and Histology, Medical School, University of Murcia, Murcia, Spain
| | - Sergio Martínez-Bellver
- Department of Human Anatomy and Embryology, Medical School, Universitat de Valencia, Valencia, Spain
| | - Vicent Teruel-Martí
- Department of Human Anatomy and Embryology, Medical School, Universitat de Valencia, Valencia, Spain
| | | | - Mónica Tomás
- Department of Human Anatomy and Embryology, Medical School, Universitat de Valencia, Valencia, Spain
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50
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Espinosa-Oliva AM, Ruiz R, Soto MS, Boza-Serrano A, Rodriguez-Perez AI, Roca-Ceballos MA, García-Revilla J, Santiago M, Serres S, Economopoulus V, Carvajal AE, Vázquez-Carretero MD, García-Miranda P, Klementieva O, Oliva-Martín MJ, Deierborg T, Rivas E, Sibson NR, Labandeira-García JL, Machado A, Peral MJ, Herrera AJ, Venero JL, de Pablos RM. Inflammatory bowel disease induces pathological α-synuclein aggregation in the human gut and brain. Neuropathol Appl Neurobiol 2024; 50:e12962. [PMID: 38343067 DOI: 10.1111/nan.12962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 12/22/2023] [Accepted: 01/16/2024] [Indexed: 02/15/2024]
Abstract
AIMS According to Braak's hypothesis, it is plausible that Parkinson's disease (PD) originates in the enteric nervous system (ENS) and spreads to the brain through the vagus nerve. In this work, we studied whether inflammatory bowel diseases (IBDs) in humans can progress with the emergence of pathogenic α-synuclein (α-syn) in the gastrointestinal tract and midbrain dopaminergic neurons. METHODS We have analysed the gut and the ventral midbrain from subjects previously diagnosed with IBD and form a DSS-based rat model of gut inflammation in terms of α-syn pathology. RESULTS Our data support the existence of pathogenic α-syn in both the gut and the brain, thus reinforcing the potential role of the ENS as a contributing factor in PD aetiology. Additionally, we have analysed the effect of a DSS-based rat model of gut inflammation to demonstrate (i) the appearance of P-α-syn inclusions in both Auerbach's and Meissner's plexuses (gut), (ii) an increase in α-syn expression in the ventral mesencephalon (brain) and (iii) the degeneration of nigral dopaminergic neurons, which all are considered classical hallmarks in PD. CONCLUSION These results strongly support the plausibility of Braak's hypothesis and emphasise the significance of peripheral inflammation and the gut-brain axis in initiating α-syn aggregation and transport to the substantia nigra, resulting in neurodegeneration.
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Affiliation(s)
- Ana M Espinosa-Oliva
- Instituto de Biomedicina de Sevilla, IBiS/Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Sevilla, Spain
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain
| | - Rocío Ruiz
- Instituto de Biomedicina de Sevilla, IBiS/Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Sevilla, Spain
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain
| | - Manuel Sarmiento Soto
- Instituto de Biomedicina de Sevilla, IBiS/Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Sevilla, Spain
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain
- Cancer Research UK and Medical Research Council Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Churchill Hospital, Oxford, UK
| | - Antonio Boza-Serrano
- Instituto de Biomedicina de Sevilla, IBiS/Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Sevilla, Spain
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain
- Experimental Neuroinflammation Laboratory, Department of Experimental Medical Science, Lund University, Lund, Sweden
| | - Ana I Rodriguez-Perez
- Research Center for Molecular Medicine and Chronic Diseases (CIMUS), University of Santiago de Compostela, Health Research Institute (IDIS), Santiago de Compostela, Spain
- Networking Research Center on Neurodegenerative Diseases (CIBERNED), Madrid, Spain
| | - María A Roca-Ceballos
- Instituto de Biomedicina de Sevilla, IBiS/Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Sevilla, Spain
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain
| | - Juan García-Revilla
- Instituto de Biomedicina de Sevilla, IBiS/Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Sevilla, Spain
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain
| | - Marti Santiago
- Instituto de Biomedicina de Sevilla, IBiS/Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Sevilla, Spain
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain
| | - Sébastien Serres
- Cancer Research UK and Medical Research Council Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Churchill Hospital, Oxford, UK
- School of Life Sciences, University of Nottingham, Nottingham, UK
| | - Vasiliki Economopoulus
- Cancer Research UK and Medical Research Council Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Churchill Hospital, Oxford, UK
| | - Ana E Carvajal
- Departamento de Fisiología, Facultad de Farmacia, Universidad de Sevilla, Seville, Spain
| | | | - Pablo García-Miranda
- Departamento de Fisiología, Facultad de Farmacia, Universidad de Sevilla, Seville, Spain
| | - Oxana Klementieva
- Dementia Research Laboratory, Department of Experimental Medical Science, Lund University, Lund, Sweden
| | - María J Oliva-Martín
- Instituto de Biomedicina de Sevilla, IBiS/Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Sevilla, Spain
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain
| | - Tomas Deierborg
- Experimental Neuroinflammation Laboratory, Department of Experimental Medical Science, Lund University, Lund, Sweden
| | - Eloy Rivas
- Departamento de Anatomía Patológica, Hospital Universitario Virgen del Rocío, Seville, Spain
| | - Nicola R Sibson
- Cancer Research UK and Medical Research Council Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Churchill Hospital, Oxford, UK
| | - José L Labandeira-García
- Research Center for Molecular Medicine and Chronic Diseases (CIMUS), University of Santiago de Compostela, Health Research Institute (IDIS), Santiago de Compostela, Spain
- Networking Research Center on Neurodegenerative Diseases (CIBERNED), Madrid, Spain
| | - Alberto Machado
- Instituto de Biomedicina de Sevilla, IBiS/Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Sevilla, Spain
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain
| | - María J Peral
- Departamento de Fisiología, Facultad de Farmacia, Universidad de Sevilla, Seville, Spain
| | - Antonio J Herrera
- Instituto de Biomedicina de Sevilla, IBiS/Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Sevilla, Spain
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain
| | - José L Venero
- Instituto de Biomedicina de Sevilla, IBiS/Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Sevilla, Spain
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain
| | - Rocío M de Pablos
- Instituto de Biomedicina de Sevilla, IBiS/Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Sevilla, Spain
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain
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