{"title":"A place for place cells in post-stroke cognitive impairment.","authors":"Abbie C Chapman","doi":"10.1016/j.tins.2025.05.001","DOIUrl":"https://doi.org/10.1016/j.tins.2025.05.001","url":null,"abstract":"<p><p>In a recent study, Heiser et al. showed that hippocampal place cell stability and spatial encoding were disrupted in mice after brain-wide microstrokes. These findings suggest that hippocampal neurons are particularly vulnerable to dysfunction after stroke, even in the absence of local lesions. They also highlight the potential to improve place cell stability and rescue post-stroke memory function.</p>","PeriodicalId":23325,"journal":{"name":"Trends in Neurosciences","volume":" ","pages":""},"PeriodicalIF":14.6,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144120952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Gi signaling controls microglial surveillance and neuronal synchronization.","authors":"Aletta M R van den Bosch, Jörg Hamann","doi":"10.1016/j.tins.2025.04.006","DOIUrl":"https://doi.org/10.1016/j.tins.2025.04.006","url":null,"abstract":"<p><p>Microglia-neuron interactions are essential for maintaining brain homeostasis. In a recent study, Zhao and colleagues demonstrated that activation of Gi-G-protein-coupled receptors (Gi-GPCRs) on microglia suppresses microglial process dynamics, reduces neuronal activity, and disrupts network synchronization. These findings highlight the role of microglial Gi-GPCR signaling in neuromodulation and its role in network activity in the healthy brain.</p>","PeriodicalId":23325,"journal":{"name":"Trends in Neurosciences","volume":" ","pages":""},"PeriodicalIF":14.6,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144016703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Anastasia Filimontseva, YuHong Fu, Miquel Vila, Glenda M Halliday
{"title":"Neuromelanin and selective neuronal vulnerability to Parkinson's disease.","authors":"Anastasia Filimontseva, YuHong Fu, Miquel Vila, Glenda M Halliday","doi":"10.1016/j.tins.2025.04.005","DOIUrl":"https://doi.org/10.1016/j.tins.2025.04.005","url":null,"abstract":"<p><p>Neuromelanin is a unique pigment made by some human catecholamine neurons. These neurons survive with their neuromelanin content for a lifetime but can also be affected by age-related neurodegenerative conditions, as observed using new neuromelanin imaging techniques. The limited quantities of neuromelanin has made understanding its normal biology difficult, but recent rodent and primate models, as well as omics studies, have confirmed its importance for selective neuronal loss in Parkinson's disease (PD). We review the development of neuromelanin in dopamine versus noradrenaline neurons and focus on previously overlooked cellular organelles in neuromelanin formation and function. We discuss the role of neuromelanin in stimulating endogenous α-synuclein misfolding in PD which renders neuromelanin granules vulnerable, and can exacerbates other pathogenic processes.</p>","PeriodicalId":23325,"journal":{"name":"Trends in Neurosciences","volume":" ","pages":""},"PeriodicalIF":14.6,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144038646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The multifaceted roles of Akkermansia muciniphila in neurological disorders.","authors":"Xin Ma, Qiang Liu, Guan Yang","doi":"10.1016/j.tins.2025.04.004","DOIUrl":"https://doi.org/10.1016/j.tins.2025.04.004","url":null,"abstract":"<p><p>Gut commensals regulate neurological disorders through dynamic bidirectional communication along the gut-brain axis. Recent evidence has highlighted the well-documented beneficial role of the commensal gut bacterium Akkermansia muciniphila and its components in promoting host health. However, numerous clinical studies have demonstrated a paradoxical role of A. muciniphila in individuals with various neurological conditions. In this opinion article, we review the correlation between the prevalence of this gut commensal and the development of several disorders, including stroke, multiple sclerosis (MS), Parkinson's disease (PD), and Alzheimer's disease (AD). We focus on the potential mechanisms by which A. muciniphila may contribute to these diseases. An in-depth understanding of these correlations and the underlying pathogenic mechanisms could shed new light on the mechanisms of disease pathogenesis and provide a logical rationale for developing new therapies for these neurological conditions.</p>","PeriodicalId":23325,"journal":{"name":"Trends in Neurosciences","volume":" ","pages":""},"PeriodicalIF":14.6,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144048246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cheng-Hsi Wu, Léa Camelot, Salvatore Lecca, Manuel Mameli
{"title":"Neuromodulatory signaling contributing to the encoding of aversion.","authors":"Cheng-Hsi Wu, Léa Camelot, Salvatore Lecca, Manuel Mameli","doi":"10.1016/j.tins.2025.04.003","DOIUrl":"https://doi.org/10.1016/j.tins.2025.04.003","url":null,"abstract":"<p><p>The appropriate and rapid encoding of stimuli bearing a negative valence enables behaviors that are essential for survival. Recent advances in neuroscience using rodents as a model system highlight the relevance of cell type-specific neuronal activities in diverse brain networks for the encoding of aversion, as well as their importance for subsequent behavioral strategies. Within these networks, neuromodulators influence cell excitability, adjust fast synaptic neurotransmission, and affect plasticity, ultimately modulating behaviors. In this review we first discuss contemporary findings leveraging the use of cutting-edge neurotechnologies to define aversion-related neural circuits. The spatial and temporal dynamics of the release of neuromodulators and neuropeptides upon exposure to aversive stimuli are described within defined brain circuits. Together, these mechanistic insights update the present neural framework through which aversion drives motivated behaviors.</p>","PeriodicalId":23325,"journal":{"name":"Trends in Neurosciences","volume":" ","pages":""},"PeriodicalIF":14.6,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143983860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Trends in NeurosciencesPub Date : 2025-05-01Epub Date: 2025-03-28DOI: 10.1016/j.tins.2025.02.010
Jiaxing Li, Frederic Fiore, Kelly R Monk, Amit Agarwal
{"title":"Spatiotemporal calcium dynamics orchestrate oligodendrocyte development and myelination.","authors":"Jiaxing Li, Frederic Fiore, Kelly R Monk, Amit Agarwal","doi":"10.1016/j.tins.2025.02.010","DOIUrl":"10.1016/j.tins.2025.02.010","url":null,"abstract":"<p><p>Oligodendrocyte lineage cells (OLCs), comprising oligodendrocyte precursor cells (OPCs) and oligodendrocytes, are pivotal in sculpting central nervous system (CNS) architecture and function. OPCs mature into oligodendrocytes, which enwrap axons with myelin sheaths that are critical for enhancing neural transmission. Notably, OLCs actively respond to neuronal activity, modulating neural circuit functions. Understanding neuron-OLC interactions is key to unraveling how OLCs contribute to CNS health and pathology. This review highlights insights from zebrafish and mouse models, revealing how synaptic and extrasynaptic pathways converge to shape spatiotemporal calcium (Ca<sup>2+</sup>) dynamics within OLCs. We explore how Ca<sup>2+</sup> signal integration across spatial and temporal scales acts as a master regulator of OLC fate determination and myelin plasticity.</p>","PeriodicalId":23325,"journal":{"name":"Trends in Neurosciences","volume":" ","pages":"377-388"},"PeriodicalIF":14.6,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143744069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Trends in NeurosciencesPub Date : 2025-05-01Epub Date: 2025-04-22DOI: 10.1016/j.tins.2025.03.004
Pierre Dourlen, Devrim Kilinc, Isabelle Landrieu, Julien Chapuis, Jean-Charles Lambert
{"title":"BIN1 and Alzheimer's disease: the tau connection.","authors":"Pierre Dourlen, Devrim Kilinc, Isabelle Landrieu, Julien Chapuis, Jean-Charles Lambert","doi":"10.1016/j.tins.2025.03.004","DOIUrl":"10.1016/j.tins.2025.03.004","url":null,"abstract":"<p><p>Bridging integrator 1 (BIN1) is a ubiquitously expressed protein that plays a critical role in endocytosis, trafficking and cytoskeletal dynamics. In 2010, BIN1 gene was reported as a major genetic risk factor for Alzheimer's disease (AD), which shifted the focus on its physiological and pathophysiological roles in the brain (at a time when data available were scarce). In this review, we discuss the multiple cerebral roles of BIN1, especially in regulating synaptic function, and the strong link between BIN1 and tau pathology, supported by recent evidence ranging from genetic and clinical/postmortem observations to molecular interactions.</p>","PeriodicalId":23325,"journal":{"name":"Trends in Neurosciences","volume":" ","pages":"349-361"},"PeriodicalIF":14.6,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143999808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Trends in NeurosciencesPub Date : 2025-05-01Epub Date: 2025-03-22DOI: 10.1016/j.tins.2025.02.009
Lilian G Jerow, Darcy A Krueger, Christina Gross, Steve C Danzer
{"title":"Somatic mosaicism and interneuron involvement in mTORopathies.","authors":"Lilian G Jerow, Darcy A Krueger, Christina Gross, Steve C Danzer","doi":"10.1016/j.tins.2025.02.009","DOIUrl":"10.1016/j.tins.2025.02.009","url":null,"abstract":"<p><p>Somatic mutations in genes regulating mechanistic target of rapamycin (mTOR) pathway signaling can cause epilepsy, autism, and cognitive dysfunction. Research has predominantly focused on mTOR regulation of excitatory neurons in these conditions; however, dysregulated mTOR signaling among interneurons may also be critical. In this review, we discuss clinical evidence for interneuron involvement, and potential mechanisms, known and hypothetical, by which interneurons might come to directly harbor pathogenic mutations. To understand how mTOR hyperactive interneurons might drive dysfunction, we review studies in which mTOR signaling has been selectively disrupted among interneurons and interneuron progenitors in mouse model systems. Complex cellular mosaicism and dual roles for mTOR (hyper)activation in mediating disease pathogenesis and homeostatic responses raise challenging questions for effective treatment of these disorders.</p>","PeriodicalId":23325,"journal":{"name":"Trends in Neurosciences","volume":" ","pages":"362-376"},"PeriodicalIF":14.6,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12078011/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143693475","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}
Trends in NeurosciencesPub Date : 2025-05-01Epub Date: 2025-03-24DOI: 10.1016/j.tins.2025.03.003
Marc Shenouda, Paul M McKeever, Janice Robertson
{"title":"The long and the short of TDP-43.","authors":"Marc Shenouda, Paul M McKeever, Janice Robertson","doi":"10.1016/j.tins.2025.03.003","DOIUrl":"10.1016/j.tins.2025.03.003","url":null,"abstract":"<p><p>In a recent study, Dykstra and colleagues show that shortened TAR DNA Binding Protein 43 (sTDP-43) isoforms are generated as by-products of TDP-43 autoregulation. sTDP-43 levels are regulated through nonsense-mediated decay and proteasomal and autophagic degradation, and elicit toxicity through dominant negative effects on TDP-43 splicing activity. These results identify mechanisms contributing to sTDP-43 accumulation and toxicity in disease.</p>","PeriodicalId":23325,"journal":{"name":"Trends in Neurosciences","volume":" ","pages":"313-314"},"PeriodicalIF":14.6,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143711462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Trends in NeurosciencesPub Date : 2025-05-01Epub Date: 2025-02-25DOI: 10.1016/j.tins.2025.01.003
Peter Denno, Sijia Zhao, Masud Husain, Adam Hampshire
{"title":"Defining brain fog across medical conditions.","authors":"Peter Denno, Sijia Zhao, Masud Husain, Adam Hampshire","doi":"10.1016/j.tins.2025.01.003","DOIUrl":"10.1016/j.tins.2025.01.003","url":null,"abstract":"<p><p>'Brain fog' is commonly reported in more than a dozen chronic diseases, but what is it? We review research across conditions which has characterised brain fog and evaluate its definitions and objective correlates. Brain fog has been used to refer to a variable set of overlapping symptoms implicating cognition, fatigue, and affect. It has been defined as a distinct symptom, a syndrome, or a nonspecific term. We consider the evidence that brain fog is a transdiagnostic entity with a common phenomenology and profile of objective cognitive deficits. We discuss where these commonalities arise and argue that linguistic ambiguity, shared cognitive impairments, and noncognitive factors are more likely than shared neurobiology. We suggest how future research might apply existing tools to disambiguate the phenomena that brain fog conflates.</p>","PeriodicalId":23325,"journal":{"name":"Trends in Neurosciences","volume":" ","pages":"330-348"},"PeriodicalIF":14.6,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143515712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}