Frontiers in Aging Neuroscience最新文献

{"title":"Mapping knowledge domain of acupuncture for Parkinson’s disease: a bibliometric and visual analysis","authors":"Yanqing Zhao, Li Huang, Wentao Li","doi":"10.3389/fnagi.2024.1388290","DOIUrl":"https://doi.org/10.3389/fnagi.2024.1388290","url":null,"abstract":"ObjectiveThis study points to probing the inclination and mapping knowledge domain of acupuncture for Parkinson’s disease through bibliometrics.MethodsA search was conducted on 1 February 2024 using the Web of Science to identify papers published on acupuncture for Parkinson’s disease. The analysis included scientific research, countries, organizations, authors/cited authors, keywords, journals, and cited references. Bibliometric data were analyzed using VOSviewer software, CiteSpace, GraphPad Prism, and Scimago Graphica. The studies on acupuncture for Parkinson’s disease were visualized as a network map according to the publication year.ResultsThe cumulative publication trend on acupuncture for Parkinson’s disease is increasing year by year. China is the leading contributor in this field. International collaboration is predominantly concentrated in Europe, while institutional collaboration is chiefly limited to Chinese universities specializing in traditional Chinese medicine. Park HJ is the most prolific author, with “Movement Disorders” being the journal with the most publications. “Brain Research” is identified as a key journal, reflecting a focus on neuroscience. Kim SN is the most cited author, while Eisenberg DM is a prominent author in this field. Research topics such as mouse models, systematic reviews, and non-motor symptoms are frequently explored, with messenger RNA of substantia nigra emerging as a notable keyword in this field. Choi YG’s 2009 paper, published in the <jats:italic>Neuroscience Letters</jats:italic> journal, is a critical reference in this field. Key papers include Eisenberg DM’s 1998 study on randomized trials of acupuncture for non-motor symptoms of PD, as well as research focusing on the neuroinflammatory regulatory mechanisms of acupuncture for PD.ConclusionThe bibliometric analysis offers an exhaustive generality of the advancement and worldwide trends in acupuncture treatments for Parkinson’s disease, shedding light on potential avenues for prospective research.","PeriodicalId":12450,"journal":{"name":"Frontiers in Aging Neuroscience","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142214260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In 2024, the amyloid-cascade-hypothesis still remains a working hypothesis, no less but certainly no more","authors":"Christian Behl","doi":"10.3389/fnagi.2024.1459224","DOIUrl":"https://doi.org/10.3389/fnagi.2024.1459224","url":null,"abstract":"The <jats:italic>amyloid-cascade-hypothesis</jats:italic> of the pathogenesis of Alzheimer’s disease (AD) was introduced 32 years ago, in 1992. From early on, this clear and straight forward hypothesis received a lot of attention, but also a lot of substantial criticism. Foremost, there have always been massive doubts that a complex age-associated disorder of the most intricate organ of the human body, the brain, can be explained by a linear, one-dimensional cause-and-effect model. The amyloid-cascade defines the generation, aggregation, and deposition of the amyloid beta peptide as the central pathogenic mechanism in AD, as the ultimate trigger of the disease, and, consequently, as the key pharmacological target. Certainly, the original 1992 version of this hypothesis has been refined by various means, and the ‘formulating fathers’ followed up with a few reappraisals and partly very open reflections in 2002, 2006, 2009, and 2016. However, up until today, for the supporters of this hypothesis, the central and initial steps of the cascade are believed to be driven by amyloid beta—even if now displayed somewhat more elaborate. In light of the recently published clinical results achieved with anti-amyloid antibodies, the controversy in the field about (1) the clinical meaningfulness of this approach, (2) the significance of clearance of the amyloid beta peptide, and last but not least (3) the relevance of the amyloid-cascade-hypothesis is gaining momentum. This review addresses the interesting manifestation of the amyloid-cascade-hypothesis as well as its ups and downs over the decades.","PeriodicalId":12450,"journal":{"name":"Frontiers in Aging Neuroscience","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142214258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Genome-wide association analysis and admixture mapping in a Puerto Rican cohort supports an Alzheimer disease risk locus on chromosome 12","authors":"Bilcag Akgun, Briseida E. Feliciano-Astacio, Kara L. Hamilton-Nelson, Kyle Scott, Joe Rivero, Larry D. Adams, Jose J. Sanchez, Glenies S. Valladares, Sergio Tejada, Parker L. Bussies, Concepcion Silva-Vergara, Vanessa C. Rodriguez, Pedro R. Mena, Katrina Celis, Patrice G. Whitehead, Michael Prough, Christina Kosanovic, Derek J. Van Booven, Michael A. Schmidt, Heriberto Acosta, Anthony J. Griswold, Clifton L. Dalgard, Katalina F. McInerney, Gary W. Beecham, Michael L. Cuccaro, Jeffery M. Vance, Margaret A. Pericak-Vance, Farid Rajabli","doi":"10.3389/fnagi.2024.1459796","DOIUrl":"https://doi.org/10.3389/fnagi.2024.1459796","url":null,"abstract":"IntroductionHispanic/Latino populations are underrepresented in Alzheimer Disease (AD) genetic studies. Puerto Ricans (PR), a three-way admixed (European, African, and Amerindian) population is the second-largest Hispanic group in the continental US. We aimed to conduct a genome-wide association study (GWAS) and comprehensive analyses to identify novel AD susceptibility loci and characterize known AD genetic risk loci in the PR population.Materials and methodsOur study included Whole Genome Sequencing (WGS) and phenotype data from 648 PR individuals (345 AD, 303 cognitively unimpaired). We used a generalized linear-mixed model adjusting for sex, age, population substructure, and genetic relationship matrix. To infer local ancestry, we merged the dataset with the HGDP/1000G reference panel. Subsequently, we conducted univariate admixture mapping (AM) analysis.ResultsWe identified suggestive signals within the <jats:italic>SLC38A1</jats:italic> and <jats:italic>SCN8A</jats:italic> genes on chromosome 12q13. This region overlaps with an area of linkage of AD in previous studies (12q13) in independent data sets further supporting. Univariate African AM analysis identified one suggestive ancestral block (<jats:italic>p</jats:italic> = 7.2×10<jats:sup>−6</jats:sup>) located in the same region. The ancestry-aware approach showed that this region has both European and African ancestral backgrounds and both contributing to the risk in this region. We also replicated 11 different known AD loci -including <jats:italic>APOE</jats:italic>- identified in mostly European studies, which is likely due to the high European background of the PR population.ConclusionPR GWAS and AM analysis identified a suggestive AD risk locus on chromosome 12, which includes the <jats:italic>SLC38A1</jats:italic> and <jats:italic>SCN8A</jats:italic> genes. Our findings demonstrate the importance of designing GWAS and ancestry-aware approaches and including underrepresented populations in genetic studies of AD.","PeriodicalId":12450,"journal":{"name":"Frontiers in Aging Neuroscience","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142214261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thalamic-limbic circuit dysfunction and white matter topological alteration in Parkinson’s disease are correlated with gait disturbance","authors":"Qingguo Ren, Shuai Zhao, Rong Yu, Ziliang Xu, Shuangwu Liu, Bin Zhang, Qicai Sun, Qingjun Jiang, Cuiping Zhao, Xiangshui Meng","doi":"10.3389/fnagi.2024.1426754","DOIUrl":"https://doi.org/10.3389/fnagi.2024.1426754","url":null,"abstract":"BackgroundLimbic structures have recently garnered increased attention in Parkinson’s disease (PD) research. This study aims to explore changes at the whole-brain level in the structural network, specifically the white matter fibres connecting the thalamus and limbic system, and their correlation with the clinical characteristics of patients with PD.MethodsBetween December 2020 and November 2021, we prospectively enrolled 42 patients with PD and healthy controls at the movement disorder centre. All participants underwent diffusion tensor imaging (DTI), 3D T1-weighted imaging (3D-T1WI), and routine brain magnetic resonance imaging on a 3.0 T MR scanner. We employed the tract-based spatial statistical (TBSS) analytic approach, examined structural network properties, and conducted probabilistic fibre tractography to identify alterations in white matter pathways and the topological organisation associated with PD.ResultsIn patients with PD, significant changes were observed in the fibrous tracts of the prefrontal lobe, corpus callosum, and thalamus. Notably, the fibrous tracts in the prefrontal lobe and corpus callosum showed a moderate negative correlation with the Freezing of Gait Questionnaire (FOG-Q) scores (<jats:italic>r</jats:italic> = −0.423, <jats:italic>p</jats:italic> = 0.011). The hippocampus and orbitofrontal gyrus exhibited more fibre bundle parameter changes than other limbic structures. The mean streamline length between the thalamus and the orbitofrontal gyrus demonstrated a moderate negative correlation with Movement Disorder Society Unified Parkinson’s Disease Rating Scale (MDS-UPDRS) III (<jats:italic>r</jats:italic> = −0.435, <jats:italic>p</jats:italic> = 0.006). Topological parameters, including characteristic path length (<jats:italic>L</jats:italic><jats:sub>p</jats:sub>), global efficiency (<jats:italic>E</jats:italic><jats:sub>g</jats:sub>), normalised shortest path length (<jats:italic>λ</jats:italic>) and nodal local efficiency (<jats:italic>N</jats:italic><jats:sub>le</jats:sub>), correlated moderately with the MDS-UPDRS, HAMA, MoCA, PDQ-39, and FOG-Q, respectively.ConclusionDTI is a valuable tool for detecting changes in water molecule dispersion and the topological structure of the brain in patients with PD. The thalamus may play a significant role in the gait abnormalities observed in PD.","PeriodicalId":12450,"journal":{"name":"Frontiers in Aging Neuroscience","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142214259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bibliometric analysis of global research trends in magnetic resonance imaging studies of substantia nigra in Parkinson’s disease (2001–2024)","authors":"Mei Jiang, Xu Deng, Zixiong Qiu, Jie Li, Zifan Song, Xiaoshuai Chen, Ruiqi Chen, Xianzhi Huang, Xiaojun Cui, Yuan Fu","doi":"10.3389/fnagi.2024.1455562","DOIUrl":"https://doi.org/10.3389/fnagi.2024.1455562","url":null,"abstract":"BackgroundParkinson’s disease (PD) is a globally prevalent neurodegenerative disorder, primarily characterized by muscle rigidity, resting tremor, and bradykinesia. The incidence of PD is rapidly escalating worldwide. Numerous studies have been conducted on the application of magnetic resonance imaging (MRI) in investigating the substantia nigra (SN) in PD patients. However, to date, no bibliometric analysis has been performed on this specific research area. Therefore, this study aimed to provide a comprehensive analysis of the current status in MRI research on the SN in PD patients.Materials and methodsMRI study records related to the SN in PD patients from 2001 to 2024 were searched by using the Web of Science Core Collection (WOSCC) database and then the CiteSpace and VOSviewer were used to conduct bibliometric analysis.ResultsOur analysis found that the number of published articles related studies on MRI of the SN in PD showed an overall upward trend over the past decade, in which Lehericy, Stephane, Du, Guangwei, and Huang, Xuemei are the top three authors with the most articles. Additionally, United States, China and Germany are the main contributors to MRI studies of SN in PD. And Shanghai Jiao Tong University, University of Florida and Seoul National University are the leading institutions in the field. Finally, the keyword analysis showed that the hotspots and trends of research in this field are mainly concentrated in quantitative susceptibility mapping, neuroimaging, and neuromelanin-sensitive MRI.ConclusionThese analysis identified the most influential authors, institutions, countries and research hotspots in the field of SN-MRI research in PD, which has reference significance for the research interest in this field and provides a new idea for PD prevention.","PeriodicalId":12450,"journal":{"name":"Frontiers in Aging Neuroscience","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142214262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Automated brain segmentation and volumetry in dementia diagnostics: a narrative review with emphasis on FreeSurfer","authors":"Eya Khadhraoui, Thomas Nickl-Jockschat, Hans Henkes, Daniel Behme, Sebastian Johannes Müller","doi":"10.3389/fnagi.2024.1459652","DOIUrl":"https://doi.org/10.3389/fnagi.2024.1459652","url":null,"abstract":"BackgroundDementia can be caused by numerous different diseases that present variable clinical courses and reveal multiple patterns of brain atrophy, making its accurate early diagnosis by conventional examinative means challenging. Although highly accurate and powerful, magnetic resonance imaging (MRI) currently plays only a supportive role in dementia diagnosis, largely due to the enormous volume and diversity of data it generates. AI-based software solutions/algorithms that can perform automated segmentation and volumetry analyses of MRI data are being increasingly used to address this issue. Numerous commercial and non-commercial software solutions for automated brain segmentation and volumetry exist, with FreeSurfer being the most frequently used.ObjectivesThis Review is an account of the current situation regarding the application of automated brain segmentation and volumetry to dementia diagnosis.MethodsWe performed a PubMed search for “FreeSurfer AND Dementia” and obtained 493 results. Based on these search results, we conducted an in-depth source analysis to identify additional publications, software tools, and methods. Studies were analyzed for design, patient collective, and for statistical evaluation (mathematical methods, correlations).ResultsIn the studies identified, the main diseases and cohorts represented were Alzheimer’s disease (<jats:italic>n</jats:italic> = 276), mild cognitive impairment (<jats:italic>n</jats:italic> = 157), frontotemporal dementia (<jats:italic>n</jats:italic> = 34), Parkinson’s disease (<jats:italic>n</jats:italic> = 29), dementia with Lewy bodies (<jats:italic>n</jats:italic> = 20), and healthy controls (<jats:italic>n</jats:italic> = 356). The findings and methods of a selection of the studies identified were summarized and discussed.ConclusionOur evaluation showed that, while a large number of studies and software solutions are available, many diseases are underrepresented in terms of their incidence. There is therefore plenty of scope for targeted research.","PeriodicalId":12450,"journal":{"name":"Frontiers in Aging Neuroscience","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142214279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative study on structural and functional brain differences in mild cognitive impairment patients with tinnitus","authors":"Sang-Yoon Han, Heejung Kim, Yejin Yun, Min Jae Lee, Jun-Young Lee, Sun-Won Park, Yu Kyeong Kim, Young Ho Kim","doi":"10.3389/fnagi.2024.1470919","DOIUrl":"https://doi.org/10.3389/fnagi.2024.1470919","url":null,"abstract":"ObjectiveTinnitus may be associated with various brain changes. However, the degenerative changes in patients with tinnitus have not been extensively investigated. We aimed to evaluate degenerative, structural, and functional brain changes in patients with mild cognitive impairment (MCI) who also suffer from tinnitus.Materials and methodsThis study included participants aged 60 to 80 years with MCI and a hearing level better than 40 dB. The participants were classified into two groups: MCI with tinnitus (MCI-T) and MCI without tinnitus (MCI-NT). All patients underwent Tinnitus Handicap Inventory (THI), 3 T brain MRI, F18-florapronol PET, and F18-FDG PET.ResultsThe MCI-T group exhibited higher β-amyloid deposition in the superior temporal gyrus, temporal pole, and middle temporal gyrus compared to the MCI-NT group (<jats:italic>p</jats:italic> &amp;lt; 0.05 for all). Additionally, the MCI-T group showed increased metabolism in the inferior frontal gyrus, insula, and anterior cingulate cortex (ACC) (<jats:italic>p</jats:italic> &amp;lt; 0.005 for all). The THI score was strongly correlated with increased volume in the insula, ACC, superior frontal gyrus, supplementary motor area, white matter near the hippocampus, and precentral gyrus (<jats:italic>p</jats:italic> &amp;lt; 0.05 for all). Moreover, the MCI-T group demonstrated higher metabolic activity in the default mode network (DMN) and lower activity in the executive control network (ECN) (<jats:italic>p</jats:italic> &amp;lt; 0.05 for all). In the MCI-T group, the posterior DMN was positively correlated with the visual network and negatively with the ECN, whereas in the MCI-NT group, it correlated positively with the ECN.ConclusionThe MCI-T group exhibited greater β-amyloid accumulation in the auditory cortex and more extensive changes across various brain networks compared with the MCI-NT group, potentially leading to diverse clinical symptoms such as dementia with semantic deficits or depression. Tinnitus in MCI patients may serve as a biomarker for degenerative changes in the temporal lobe and alterations in brain network dynamics.","PeriodicalId":12450,"journal":{"name":"Frontiers in Aging Neuroscience","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142214282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of multiple infections on risk of incident dementia according to subjective cognitive decline status: a nationwide population-based cohort study","authors":"Jung-Won Lee, Mina Kim, Hoseob Kim, Sunghwan Kim, Yoo Hyun Um, Sheng-Min Wang, Hyun Kook Lim, Chang Uk Lee, Dong Woo Kang","doi":"10.3389/fnagi.2024.1410185","DOIUrl":"https://doi.org/10.3389/fnagi.2024.1410185","url":null,"abstract":"BackgroundThe interrelation between infections, subjective cognitive decline (SCD), and dementia development is recognized, but not fully understood. This study explored the combined effect of specific infections and SCD on the risk of dementia.ObjectivesTo assess the influence of <jats:italic>Helicobacter pylori</jats:italic>, herpes simplex virus, varicella-zoster virus, and human papillomavirus on dementia risk in individuals with varying cognitive statuses, especially focusing on those with and without SCD.MethodsA cohort of 1,100,540 participants aged 66 years from the Korean National Health Insurance Service was divided into cognitively preserved (CP, <jats:italic>n</jats:italic> = 825,405) and SCD (<jats:italic>n</jats:italic> = 275,135) groups. This study analyzed the effects of single, dual, and triple infections on the risk of overall dementia, Alzheimer’s disease (AD), and vascular dementia (VaD) using incidence rates and hazard ratios.ResultsThe SCD group consistently showed a doubled risk of dementia, particularly AD, regardless of the number of infections. In the initial data, both the presence and number of infections, especially in the CP group, were associated with an increased dementia incidence and risk; however, this correlation disappeared after adjusting for covariates, hinting at a possible protective effect.ConclusionOur findings emphasize that, while SCD is a steadfast risk factor for dementia, the role of infections is layered, subject to various influences, and requires more comprehensive exploration to fully understand their impact on dementia development.","PeriodicalId":12450,"journal":{"name":"Frontiers in Aging Neuroscience","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142214280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Neuropathology and neuroinflammation in Alzheimer’s disease via bidirectional lung–brain axis","authors":"Jie Lu, Cheng-Jun Li, Jing Wang, Yang Wang","doi":"10.3389/fnagi.2024.1449575","DOIUrl":"https://doi.org/10.3389/fnagi.2024.1449575","url":null,"abstract":"Alzheimer’s disease (AD) is the most common form of age-related dementia worldwide. Although the neuropathology of AD is clear, its pathogenesis remains unclear. Recently, conceptualising AD as brain-centred has reoriented many scientists because the close functional relationship between the peripheral and central nerves is increasingly recognised. Recently, various studies have focused on the crosstalk between peripherals and centrals. A new hotspot of research and new therapeutic strategies have emerged from this great progress. This mini-review is an overview of the potential molecular mechanism in AD via the bidirectional lung-brain axis, providing a new perspective for the systemic understanding of AD onset.","PeriodicalId":12450,"journal":{"name":"Frontiers in Aging Neuroscience","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142214285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Association between air pollution and cerebrospinal fluid alpha-synuclein in urban elders: the CABLE study","authors":"An-Yi Wang, He-Ying Hu, Yan Sun, Ya-Nan Ou, Ya-Hui Ma, Meng Li, Qiong-Yao Li, Lan Tan","doi":"10.3389/fnagi.2024.1422772","DOIUrl":"https://doi.org/10.3389/fnagi.2024.1422772","url":null,"abstract":"IntroductionIncreasing evidence suggests that air pollution has a significant impact on the development of synucleinopathies, but the potential neurobiological mechanisms are unknown. We aimed to explore the associations of air pollution (including ozone [O<jats:sub>3</jats:sub>], nitrogen dioxide [NO<jats:sub>2</jats:sub>], and particulate matter [PM<jats:sub>2.5</jats:sub>]) with CSF α-syn levels in urban older adults.MethodsWe included 933 urban participants from the Chinese Alzheimer’s Biomarker and LifestylE study. The 5-year average levels of air pollution exposure were estimated in the areas of residence. Multivariate linear regression was conducted to detect the correlation of air pollution with CSF α-syn levels. Subgroup analyses by age, gender, season, and history of coronary heart disease (CHD) were performed. Moreover, restricted cubic spline (RCS) models were applied to explore the potential nonlinear relationships.ResultsWe found a significant correlation of CSF α-syn level with PM<jats:sub>2.5</jats:sub> in urban participants. Specifically, multiple linear regression showed a significant negative association between PM<jats:sub>2.5</jats:sub> and CSF α-syn level (<jats:italic>p</jats:italic> = 0.029), which was more significant in female, midlife, non-CHD, and cold season subgroups. Besides, RCS models showed that O<jats:sub>3</jats:sub> had an inverse J-shaped association with CSF α-syn levels in urban participants (<jats:italic>p</jats:italic> for nonlinearity = 0.040), and the harmful effect possibly appeared when O<jats:sub>3</jats:sub> was above 37.9 ppb.DiscussionLong-term exposure to air pollution was associated with lower CSF α-syn levels, which may offer a new direction for exploring and preventing synucleinopathies.","PeriodicalId":12450,"journal":{"name":"Frontiers in Aging Neuroscience","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142214281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}