Acta Neuropathologica最新文献

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Cryo-EM structures of cotton wool plaques’ amyloid β and of tau filaments in dominantly inherited Alzheimer disease 显性遗传阿尔茨海默病中棉絮斑块淀粉样β和tau丝的冷冻电子显微镜结构。
IF 9.3 1区 医学
Acta Neuropathologica Pub Date : 2024-08-15 DOI: 10.1007/s00401-024-02786-y
Md Rejaul Hoq, Anllely Fernandez, Frank S. Vago, Grace I. Hallinan, Sakshibeedu R. Bharath, Daoyi Li, Kadir A. Ozcan, Holly J. Garringer, Wen Jiang, Ruben Vidal, Bernardino Ghetti
{"title":"Cryo-EM structures of cotton wool plaques’ amyloid β and of tau filaments in dominantly inherited Alzheimer disease","authors":"Md Rejaul Hoq,&nbsp;Anllely Fernandez,&nbsp;Frank S. Vago,&nbsp;Grace I. Hallinan,&nbsp;Sakshibeedu R. Bharath,&nbsp;Daoyi Li,&nbsp;Kadir A. Ozcan,&nbsp;Holly J. Garringer,&nbsp;Wen Jiang,&nbsp;Ruben Vidal,&nbsp;Bernardino Ghetti","doi":"10.1007/s00401-024-02786-y","DOIUrl":"10.1007/s00401-024-02786-y","url":null,"abstract":"<div><p>Cotton wool plaques (CWPs) have been described as features of the neuropathologic phenotype of dominantly inherited Alzheimer disease (DIAD) caused by some missense and deletion mutations in the presenilin 1 (<i>PSEN1</i>) gene. CWPs are round, eosinophilic amyloid-β (Aβ) plaques that lack an amyloid core and are recognizable, but not fluorescent, in Thioflavin S (ThS) preparations. Amino-terminally truncated and post-translationally modified Aβ peptide species are the main component of CWPs. Tau immunopositive neurites may be present in CWPs. In addition, neurofibrillary tangles coexist with CWPs. Herein, we report the structure of Aβ and tau filaments isolated from brain tissue of individuals affected by DIAD caused by the <i>PSEN1 V261I</i> and <i>A431E</i> mutations, with the CWP neuropathologic phenotype. CWPs are predominantly composed of type I Aβ filaments present in two novel arrangements, type Ic and type Id; additionally, CWPs contain type I and type Ib Aβ filaments. Tau filaments have the AD fold, which has been previously reported in sporadic AD and DIAD. The formation of type Ic and type Id Aβ filaments may be the basis for the phenotype of CWPs. Our data are relevant for the development of PET imaging methodologies to best detect CWPs in DIAD.</p></div>","PeriodicalId":7012,"journal":{"name":"Acta Neuropathologica","volume":"148 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11327195/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141987179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Current insights and assumptions on α-synuclein in Lewy body disease 目前对路易体疾病中α-突触核蛋白的认识和假设。
IF 9.3 1区 医学
Acta Neuropathologica Pub Date : 2024-08-14 DOI: 10.1007/s00401-024-02781-3
Rehana K. Leak, Rachel N. Clark, Muslim Abbas, Fei Xu, Jeffrey L. Brodsky, Jun Chen, Xiaoming Hu, Kelvin C. Luk
{"title":"Current insights and assumptions on α-synuclein in Lewy body disease","authors":"Rehana K. Leak,&nbsp;Rachel N. Clark,&nbsp;Muslim Abbas,&nbsp;Fei Xu,&nbsp;Jeffrey L. Brodsky,&nbsp;Jun Chen,&nbsp;Xiaoming Hu,&nbsp;Kelvin C. Luk","doi":"10.1007/s00401-024-02781-3","DOIUrl":"10.1007/s00401-024-02781-3","url":null,"abstract":"<div><p>Lewy body disorders are heterogeneous neurological conditions defined by intracellular inclusions composed of misshapen α-synuclein protein aggregates. Although α-synuclein aggregates are only one component of inclusions and not strictly coupled to neurodegeneration, evidence suggests they seed the propagation of Lewy pathology within and across cells. Genetic mutations, genomic multiplications, and sequence polymorphisms of the gene encoding α-synuclein are also causally linked to Lewy body disease. In nonfamilial cases of Lewy body disease, the disease trigger remains unidentified but may range from industrial/agricultural toxicants and natural sources of poisons to microbial pathogens. Perhaps due to these peripheral exposures, Lewy inclusions appear at early disease stages in brain regions connected with cranial nerves I and X, which interface with inhaled and ingested environmental elements in the nasal or gastrointestinal cavities. Irrespective of its identity, a stealthy disease trigger most likely shifts soluble α-synuclein (directly or indirectly) into insoluble, cross-β-sheet aggregates. Indeed, β-sheet-rich self-replicating α-synuclein multimers reside in patient plasma, cerebrospinal fluid, and other tissues, and can be subjected to α-synuclein seed amplification assays. Thus, clinicians should be able to capitalize on α-synuclein seed amplification assays to stratify patients into potential responders <i>versus</i> non-responders in future clinical trials of α-synuclein targeted therapies. Here, we briefly review the current understanding of α-synuclein in Lewy body disease and speculate on pathophysiological processes underlying the potential transmission of α-synucleinopathy across the neuraxis.</p></div>","PeriodicalId":7012,"journal":{"name":"Acta Neuropathologica","volume":"148 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11324801/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141974781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ASXL1 inactivation and reduced H3K27me3 across central nervous system tumors 中枢神经系统肿瘤中 ASXL1 失活和 H3K27me3 减少。
IF 9.3 1区 医学
Acta Neuropathologica Pub Date : 2024-08-14 DOI: 10.1007/s00401-024-02785-z
Kevin Y. Zhang, Megan Parker, Carly Weber-Levine, Anita Kalluri, Ignacio Gonzalez-Gomez, Eric Raabe, Jonathan C. Dudley, Christopher Gocke, Ming-Tseh Lin, Ying Zou, Mohamed Sherief, David O. Kamson, Matthias Holdhoff, Debraj Mukherjee, Victoria Croog, Karisa C. Schreck, Jordina Rincon-Torroella, Chetan Bettegowda, Charles G. Eberhart, Tejus Bale, Calixto-Hope G. Lucas
{"title":"ASXL1 inactivation and reduced H3K27me3 across central nervous system tumors","authors":"Kevin Y. Zhang,&nbsp;Megan Parker,&nbsp;Carly Weber-Levine,&nbsp;Anita Kalluri,&nbsp;Ignacio Gonzalez-Gomez,&nbsp;Eric Raabe,&nbsp;Jonathan C. Dudley,&nbsp;Christopher Gocke,&nbsp;Ming-Tseh Lin,&nbsp;Ying Zou,&nbsp;Mohamed Sherief,&nbsp;David O. Kamson,&nbsp;Matthias Holdhoff,&nbsp;Debraj Mukherjee,&nbsp;Victoria Croog,&nbsp;Karisa C. Schreck,&nbsp;Jordina Rincon-Torroella,&nbsp;Chetan Bettegowda,&nbsp;Charles G. Eberhart,&nbsp;Tejus Bale,&nbsp;Calixto-Hope G. Lucas","doi":"10.1007/s00401-024-02785-z","DOIUrl":"10.1007/s00401-024-02785-z","url":null,"abstract":"","PeriodicalId":7012,"journal":{"name":"Acta Neuropathologica","volume":"148 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11324662/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141974780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Loss over 5% of chromosome 1p is a clinically relevant and applicable cut-off for increased risk of recurrence in meningioma 1p 染色体缺失率超过 5%是脑膜瘤复发风险增加的一个临床相关且适用的临界值。
IF 9.3 1区 医学
Acta Neuropathologica Pub Date : 2024-08-08 DOI: 10.1007/s00401-024-02777-z
Sybren L. N. Maas, Thomas Hielscher, Philipp Sievers, Volker Hovestadt, Abigail K. Suwala, Till Acker, Michael Weller, Matthias Preusser, Christel Herold-Mende, Wolfgang Wick, Andreas von Deimling, Natalie Berghaus, Felix Sahm
{"title":"Loss over 5% of chromosome 1p is a clinically relevant and applicable cut-off for increased risk of recurrence in meningioma","authors":"Sybren L. N. Maas,&nbsp;Thomas Hielscher,&nbsp;Philipp Sievers,&nbsp;Volker Hovestadt,&nbsp;Abigail K. Suwala,&nbsp;Till Acker,&nbsp;Michael Weller,&nbsp;Matthias Preusser,&nbsp;Christel Herold-Mende,&nbsp;Wolfgang Wick,&nbsp;Andreas von Deimling,&nbsp;Natalie Berghaus,&nbsp;Felix Sahm","doi":"10.1007/s00401-024-02777-z","DOIUrl":"10.1007/s00401-024-02777-z","url":null,"abstract":"","PeriodicalId":7012,"journal":{"name":"Acta Neuropathologica","volume":"148 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11310275/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141900585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of microisolated frontal cortex excitatory layer III and V pyramidal neurons reveals a neurodegenerative phenotype in individuals with Down syndrome 对额叶皮层兴奋层 III 和 V 锥体神经元的微分离分析显示了唐氏综合征患者的神经退行性表型。
IF 9.3 1区 医学
Acta Neuropathologica Pub Date : 2024-08-06 DOI: 10.1007/s00401-024-02768-0
Melissa J. Alldred, Harshitha Pidikiti, Kyrillos W. Ibrahim, Sang Han Lee, Adriana Heguy, Gabriel E. Hoffman, Panos Roussos, Thomas Wisniewski, Jerzy Wegiel, Grace E. Stutzmann, Elliott J. Mufson, Stephen D. Ginsberg
{"title":"Analysis of microisolated frontal cortex excitatory layer III and V pyramidal neurons reveals a neurodegenerative phenotype in individuals with Down syndrome","authors":"Melissa J. Alldred,&nbsp;Harshitha Pidikiti,&nbsp;Kyrillos W. Ibrahim,&nbsp;Sang Han Lee,&nbsp;Adriana Heguy,&nbsp;Gabriel E. Hoffman,&nbsp;Panos Roussos,&nbsp;Thomas Wisniewski,&nbsp;Jerzy Wegiel,&nbsp;Grace E. Stutzmann,&nbsp;Elliott J. Mufson,&nbsp;Stephen D. Ginsberg","doi":"10.1007/s00401-024-02768-0","DOIUrl":"10.1007/s00401-024-02768-0","url":null,"abstract":"<div><p>We elucidated the molecular fingerprint of vulnerable excitatory neurons within select cortical lamina of individuals with Down syndrome (DS) for mechanistic understanding and therapeutic potential that also informs Alzheimer’s disease (AD) pathophysiology. Frontal cortex (BA9) layer III (L3) and layer V (L5) pyramidal neurons were microisolated from postmortem human DS and age- and sex-matched controls (CTR) to interrogate differentially expressed genes (DEGs) and key biological pathways relevant to neurodegenerative programs. We identified &gt; 2300 DEGs exhibiting convergent dysregulation of gene expression in both L3 and L5 pyramidal neurons in individuals with DS versus CTR subjects. DEGs included over 100 triplicated human chromosome 21 genes in L3 and L5 neurons, demonstrating a trisomic neuronal karyotype in both laminae. In addition, thousands of other DEGs were identified, indicating gene dysregulation is not limited to trisomic genes in the aged DS brain, which we postulate is relevant to AD pathobiology. Convergent L3 and L5 DEGs highlighted pertinent biological pathways and identified key pathway-associated targets likely underlying corticocortical neurodegeneration and related cognitive decline in individuals with DS. Select key DEGs were interrogated as potential hub genes driving dysregulation, namely the triplicated DEGs amyloid precursor protein (APP) and superoxide dismutase 1 (SOD1), along with key signaling DEGs including mitogen activated protein kinase 1 and 3 (MAPK1, MAPK3) and calcium calmodulin dependent protein kinase II alpha (CAMK2A), among others. Hub DEGs determined from multiple pathway analyses identified potential therapeutic candidates for amelioration of cortical neuron dysfunction and cognitive decline in DS with translational relevance to AD.</p></div>","PeriodicalId":7012,"journal":{"name":"Acta Neuropathologica","volume":"148 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00401-024-02768-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141892596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced microglial dynamics and a paucity of tau seeding in the amyloid plaque microenvironment contribute to cognitive resilience in Alzheimer’s disease 淀粉样斑块微环境中小胶质细胞动态增强和 tau 种子减少有助于阿尔茨海默氏症患者的认知恢复能力。
IF 9.3 1区 医学
Acta Neuropathologica Pub Date : 2024-08-05 DOI: 10.1007/s00401-024-02775-1
Nur Jury-Garfe, Javier Redding-Ochoa, Yanwen You, Pablo Martínez, Hande Karahan, Enrique Chimal-Juárez, Travis S. Johnson, Jie Zhang, Susan Resnick, Jungsu Kim, Juan C. Troncoso, Cristian A. Lasagna-Reeves
{"title":"Enhanced microglial dynamics and a paucity of tau seeding in the amyloid plaque microenvironment contribute to cognitive resilience in Alzheimer’s disease","authors":"Nur Jury-Garfe,&nbsp;Javier Redding-Ochoa,&nbsp;Yanwen You,&nbsp;Pablo Martínez,&nbsp;Hande Karahan,&nbsp;Enrique Chimal-Juárez,&nbsp;Travis S. Johnson,&nbsp;Jie Zhang,&nbsp;Susan Resnick,&nbsp;Jungsu Kim,&nbsp;Juan C. Troncoso,&nbsp;Cristian A. Lasagna-Reeves","doi":"10.1007/s00401-024-02775-1","DOIUrl":"10.1007/s00401-024-02775-1","url":null,"abstract":"<div><p>Asymptomatic Alzheimer’s disease (AsymAD) describes the status of individuals with preserved cognition but identifiable Alzheimer’s disease (AD) brain pathology (i.e., beta-amyloid (Aβ) deposits, neuritic plaques, and neurofibrillary tangles) at autopsy. In this study, we investigated the postmortem brains of a cohort of AsymAD subjects to gain insight into the mechanisms underlying resilience to AD pathology and cognitive decline. Our results showed that AsymAD cases exhibit enrichment in core plaques, decreased filamentous plaque accumulation, and increased plaque-surrounding microglia. Less pathological tau aggregation in dystrophic neurites was found in AsymAD brains than in AD brains, and tau seeding activity was comparable to that in healthy brains. We used spatial transcriptomics to characterize the plaque niche further and revealed autophagy, endocytosis, and phagocytosis as the pathways associated with the genes upregulated in the AsymAD plaque niche. Furthermore, the levels of ARP2 and CAP1, which are actin-based motility proteins that participate in the dynamics of actin filaments to allow cell motility, were increased in the microglia surrounding amyloid plaques in AsymAD cases. Our findings suggest that the amyloid-plaque microenvironment in AsymAD cases is characterized by the presence of microglia with highly efficient actin-based cell motility mechanisms and decreased tau seeding compared with that in AD brains. These two mechanisms can potentially protect against the toxic cascade initiated by Aβ, preserving brain health, and slowing AD pathology progression.</p></div>","PeriodicalId":7012,"journal":{"name":"Acta Neuropathologica","volume":"148 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11300572/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141888139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Alcohol consumers with liver pathology rarely display α-synuclein pathology 患有肝脏病变的饮酒者很少出现α-突触核蛋白病变。
IF 9.3 1区 医学
Acta Neuropathologica Pub Date : 2024-08-01 DOI: 10.1007/s00401-024-02772-4
Sylwia Libard, Fredrik Tamsen, Irina Alafuzoff
{"title":"Alcohol consumers with liver pathology rarely display α-synuclein pathology","authors":"Sylwia Libard,&nbsp;Fredrik Tamsen,&nbsp;Irina Alafuzoff","doi":"10.1007/s00401-024-02772-4","DOIUrl":"10.1007/s00401-024-02772-4","url":null,"abstract":"<div><p>It has been suggested that alcohol consumption protects against Parkinson's disease (PD). Here we assessed postmortem tissue samples from the brains and livers of 100 subjects with ages at death ranging from 51 to 93. Twenty percent of these subjects were demented. We used standardized assessment strategies to assess both the brain and liver pathologies (LP). Our cohort included subjects with none, mild, moderate, and severe LP caused by alcohol consumption. We noted a significant negative correlation of categorical data between liver steatosis and α-synuclein (αS) in the brain and a significant negative correlation between the extent of liver steatosis and fibrosis and the extent of αS in the brain. There was a significant negative association between the observation of Alzheimer’s type II astrocytes and αS pathology in the brain. No association was noted between LP and hyperphosphorylated τ (HPτ). No significant correlation could be seen between the extent of LP and the extent of HPτ, amyloid β protein (Aβ) or transactive DNA binding protein 43 (TDP43) in the brain. There were significant correlations observed between the extent of HPτ, Aβ, αS, and TDP43 in the brain and between liver steatosis, inflammation, and fibrosis. Subjects with severe LP displayed a higher frequency of Alzheimer’s type II astrocytes compared to those with no, or mild, LP. The assessed protein alterations were not more prevalent or severe in subjects with Alzheimer’s type II astrocytes in the brain. In all cases, dementia was attributed to a combination of altered proteins, i.e., mixed dementia and dementia was observed in 30% of those with mild LP when compared with 13% of those with severe LP. In summary, our results are in line with the outcome obtained by the two recent meta-analyses suggesting that subjects with a history of alcohol consumption seldom develop an α-synucleinopathy.</p></div>","PeriodicalId":7012,"journal":{"name":"Acta Neuropathologica","volume":"148 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11291549/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141858737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The parkin V380L variant is a genetic modifier of Machado–Joseph disease with impact on mitophagy Parkin V380L 变体是马查多-约瑟夫病的遗传修饰因子,对有丝分裂有影响。
IF 9.3 1区 医学
Acta Neuropathologica Pub Date : 2024-08-01 DOI: 10.1007/s00401-024-02762-6
Jonasz J. Weber, Leah Czisch, Priscila Pereira Sena, Florian Fath, Chrisovalantou Huridou, Natasa Schwarz, Rana D. Incebacak Eltemur, Anna Würth, Daniel Weishäupl, Miriam Döcker, Gunnar Blumenstock, Sandra Martins, Jorge Sequeiros, Guy A. Rouleau, Laura Bannach Jardim, Maria-Luiza Saraiva-Pereira, Marcondes C. França Jr., Carlos R. Gordon, Roy Zaltzman, Mario R. Cornejo-Olivas, Bart P. C. van de Warrenburg, Alexandra Durr, Alexis Brice, Peter Bauer, Thomas Klockgether, Ludger Schöls, Olaf Riess, The EUROSCA Network, Thorsten Schmidt
{"title":"The parkin V380L variant is a genetic modifier of Machado–Joseph disease with impact on mitophagy","authors":"Jonasz J. Weber,&nbsp;Leah Czisch,&nbsp;Priscila Pereira Sena,&nbsp;Florian Fath,&nbsp;Chrisovalantou Huridou,&nbsp;Natasa Schwarz,&nbsp;Rana D. Incebacak Eltemur,&nbsp;Anna Würth,&nbsp;Daniel Weishäupl,&nbsp;Miriam Döcker,&nbsp;Gunnar Blumenstock,&nbsp;Sandra Martins,&nbsp;Jorge Sequeiros,&nbsp;Guy A. Rouleau,&nbsp;Laura Bannach Jardim,&nbsp;Maria-Luiza Saraiva-Pereira,&nbsp;Marcondes C. França Jr.,&nbsp;Carlos R. Gordon,&nbsp;Roy Zaltzman,&nbsp;Mario R. Cornejo-Olivas,&nbsp;Bart P. C. van de Warrenburg,&nbsp;Alexandra Durr,&nbsp;Alexis Brice,&nbsp;Peter Bauer,&nbsp;Thomas Klockgether,&nbsp;Ludger Schöls,&nbsp;Olaf Riess,&nbsp;The EUROSCA Network,&nbsp;Thorsten Schmidt","doi":"10.1007/s00401-024-02762-6","DOIUrl":"10.1007/s00401-024-02762-6","url":null,"abstract":"<div><p>Machado–Joseph disease (MJD) is an autosomal dominant neurodegenerative spinocerebellar ataxia caused by a polyglutamine-coding CAG repeat expansion in the <i>ATXN3</i> gene. While the CAG length correlates negatively with the age at onset, it accounts for approximately 50% of its variability only. Despite larger efforts in identifying contributing genetic factors, candidate genes with a robust and plausible impact on the molecular pathogenesis of MJD are scarce. Therefore, we analysed missense single nucleotide polymorphism variants in the <i>PRKN</i> gene encoding the Parkinson's disease-associated E3 ubiquitin ligase parkin, which is a well-described interaction partner of the MJD protein ataxin-3, a deubiquitinase. By performing a correlation analysis in the to-date largest MJD cohort of more than 900 individuals, we identified the V380L variant as a relevant factor, decreasing the age at onset by 3 years in homozygous carriers. Functional analysis in an MJD cell model demonstrated that parkin V380L did not modulate soluble or aggregate levels of ataxin-3 but reduced the interaction of the two proteins. Moreover, the presence of parkin V380L interfered with the execution of mitophagy—the autophagic removal of surplus or damaged mitochondria—thereby compromising cell viability. In summary, we identified the V380L variant in parkin as a genetic modifier of MJD, with negative repercussions on its molecular pathogenesis and disease age at onset.</p></div>","PeriodicalId":7012,"journal":{"name":"Acta Neuropathologica","volume":"148 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11294389/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141858738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Diffuse, IDH-wildtype gliomas in adults with minimal histological change and isolated TERT promoter mutation: not simply CNS WHO grade 4 组织学变化极小的弥漫性 IDH 野生型成人胶质瘤和孤立的 TERT 启动子突变:不仅仅是中枢神经系统 WHO 4 级。
IF 9.3 1区 医学
Acta Neuropathologica Pub Date : 2024-07-29 DOI: 10.1007/s00401-024-02773-3
L. P. Priesterbach-Ackley, F. Cordier, P. de Witt Hamer, T. J. Snijders, P. A. Robe, B. Küsters, W. W. J. de Leng, W. F. A. den Dunnen, D. Brandsma, C. Jansen, P. Wesseling, A. Muhlebner
{"title":"Diffuse, IDH-wildtype gliomas in adults with minimal histological change and isolated TERT promoter mutation: not simply CNS WHO grade 4","authors":"L. P. Priesterbach-Ackley,&nbsp;F. Cordier,&nbsp;P. de Witt Hamer,&nbsp;T. J. Snijders,&nbsp;P. A. Robe,&nbsp;B. Küsters,&nbsp;W. W. J. de Leng,&nbsp;W. F. A. den Dunnen,&nbsp;D. Brandsma,&nbsp;C. Jansen,&nbsp;P. Wesseling,&nbsp;A. Muhlebner","doi":"10.1007/s00401-024-02773-3","DOIUrl":"10.1007/s00401-024-02773-3","url":null,"abstract":"","PeriodicalId":7012,"journal":{"name":"Acta Neuropathologica","volume":"148 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11286727/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141787035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High throughput spatial immune mapping reveals an innate immune scar in post-COVID-19 brains 高通量空间免疫图谱揭示了 COVID-19 后大脑中的先天性免疫疤痕。
IF 9.3 1区 医学
Acta Neuropathologica Pub Date : 2024-07-25 DOI: 10.1007/s00401-024-02770-6
Marius Schwabenland, Dilara Hasavci, Sibylle Frase, Katharina Wolf, Nikolaus Deigendesch, Joerg M. Buescher, Kirsten D. Mertz, Benjamin Ondruschka, Hermann Altmeppen, Jakob Matschke, Markus Glatzel, Stephan Frank, Robert Thimme, Juergen Beck, Jonas A. Hosp, Thomas Blank, Bertram Bengsch, Marco Prinz
{"title":"High throughput spatial immune mapping reveals an innate immune scar in post-COVID-19 brains","authors":"Marius Schwabenland,&nbsp;Dilara Hasavci,&nbsp;Sibylle Frase,&nbsp;Katharina Wolf,&nbsp;Nikolaus Deigendesch,&nbsp;Joerg M. Buescher,&nbsp;Kirsten D. Mertz,&nbsp;Benjamin Ondruschka,&nbsp;Hermann Altmeppen,&nbsp;Jakob Matschke,&nbsp;Markus Glatzel,&nbsp;Stephan Frank,&nbsp;Robert Thimme,&nbsp;Juergen Beck,&nbsp;Jonas A. Hosp,&nbsp;Thomas Blank,&nbsp;Bertram Bengsch,&nbsp;Marco Prinz","doi":"10.1007/s00401-024-02770-6","DOIUrl":"10.1007/s00401-024-02770-6","url":null,"abstract":"<div><p>The underlying pathogenesis of neurological sequelae in post-COVID-19 patients remains unclear. Here, we used multidimensional spatial immune phenotyping and machine learning methods on brains from initial COVID-19 survivors to identify the biological correlate associated with previous SARS-CoV-2 challenge. Compared to healthy controls, individuals with post-COVID-19 revealed a high percentage of TMEM119<sup>+</sup>P2RY12<sup>+</sup>CD68<sup>+</sup>Iba1<sup>+</sup>HLA-DR<sup>+</sup>CD11c<sup>+</sup>SCAMP2<sup>+</sup> microglia assembled in prototypical cellular nodules. In contrast to acute SARS-CoV-2 cases, the frequency of CD8<sup>+</sup> parenchymal T cells was reduced, suggesting an immune shift toward innate immune activation that may contribute to neurological alterations in post-COVID-19 patients.</p></div>","PeriodicalId":7012,"journal":{"name":"Acta Neuropathologica","volume":"148 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11281987/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141764811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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