Neuroscience Insights最新文献

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Multiple Sclerosis and COVID-19: An Overview on Risk, Severity, and Association With Disease Modifying Therapies. 多发性硬化症与 COVID-19:多发性硬化症与 COVID-19:风险、严重程度以及与疾病改变疗法的关联概述。
IF 2.9
Neuroscience Insights Pub Date : 2024-09-24 eCollection Date: 2024-01-01 DOI: 10.1177/26331055241265668
Mary Hollist, Abraham Hollist, Katherine Au, Colton Betts, Maha Kirmani, Maaida Kirmani, Benjamin Armour, Mercy C Udeh, Batool F Kirmani
{"title":"Multiple Sclerosis and COVID-19: An Overview on Risk, Severity, and Association With Disease Modifying Therapies.","authors":"Mary Hollist, Abraham Hollist, Katherine Au, Colton Betts, Maha Kirmani, Maaida Kirmani, Benjamin Armour, Mercy C Udeh, Batool F Kirmani","doi":"10.1177/26331055241265668","DOIUrl":"https://doi.org/10.1177/26331055241265668","url":null,"abstract":"<p><p>Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), a novel coronavirus, emerged in December 2019, sparking a global health crisis. While initially recognized as a respiratory illness, it has become evident that Coronavirus disease 2019 (COVID-19) also affects the central nervous system. This comprehensive review focuses on the neurological manifestations of COVID-19 and its impact on patients with preexisting neurological disorders, particularly those with multiple sclerosis (MS) receiving disease-modifying therapies. Advancements in management, including vaccinations, antiviral therapy, and targeted prophylaxis, have led to a decline in the incidence and severity of COVID-19. Nevertheless, significant complications persist, particularly in patients with advanced MS, who are highly vulnerable to infectious agents like SARS-CoV-2. This review explores the evolving understanding of MS and its association with SARS-CoV-2, encompassing neuroinvasiveness, pathogenesis, disease severity, and outcomes. Research findings reveal substantial neurological implications for some MS patients with COVID-19, with a potential risk of disease relapse and severity. A notable proportion of MS patients experiencing COVID-19 may manifest new symptoms, experience exacerbation of existing symptoms, or encounter both simultaneously, underscoring the diverse neurological effects of the virus. While vaccination and therapeutics have mitigated the overall impact, specific subgroups, especially those on anti-CD20 therapy and with existing disability, remain at higher risk, necessitating ongoing vigilance and tailored care.</p>","PeriodicalId":36527,"journal":{"name":"Neuroscience Insights","volume":"19 ","pages":"26331055241265668"},"PeriodicalIF":2.9,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11437550/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142355759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cacao Ameliorates Amyloid Beta-Induced Cognitive and Non-Cognitive Disturbances. 可可能改善淀粉样β蛋白诱发的认知和非认知紊乱
IF 2.9
Neuroscience Insights Pub Date : 2024-09-17 eCollection Date: 2024-01-01 DOI: 10.1177/26331055241280638
Hamid Shokati Basir, Naser Mirazi, Alireza Komaki, Mahdi Ramezani, Abdolkarim Hosseini
{"title":"Cacao Ameliorates Amyloid Beta-Induced Cognitive and Non-Cognitive Disturbances.","authors":"Hamid Shokati Basir, Naser Mirazi, Alireza Komaki, Mahdi Ramezani, Abdolkarim Hosseini","doi":"10.1177/26331055241280638","DOIUrl":"10.1177/26331055241280638","url":null,"abstract":"<p><strong>Background: </strong>Alzheimer's disease (AD) is a progressive neurological disorder characterized by a wide range of cognitive and non-cognitive impairments. The present study was designed to investigate the potential effects of cacao on cognitive and non-cognitive performance and to identify the role of oxidative stress in an AD animal model induced by unilateral intracerebroventricular (U-ICV) injection of amyloid beta<sub>1-42</sub> (Aβ<sub>1-42</sub>).</p><p><strong>Methods: </strong>Oral administration of cacao (0.5 g/kg/day) was performed for 60 consecutive days. Following 60 days, the open-field (OF) test, elevated plus-maze (EPM) test, novel object recognition (NOR) test, Barnes maze (BM) test, and Morris water maze (MWM) test were used to evaluate locomotor activity, anxiety-like behavior, recognition memory, and spatial memory, respectively. Total oxidant status (TOS) and total antioxidant capacity (TAC) in plasma were also examined. Furthermore, the number of healthy cells in the hippocampus's dentate gyrus (DG), CA1, and CA3 regions were identified using hematoxylin and eosin staining.</p><p><strong>Results: </strong>The results indicated that the injection of Aβ<sub>1-42</sub> in rats led to recognition memory and spatial memory impairments, as well as increased anxiety. This was accompanied by decreased total antioxidant capacity (TAC), increased total oxidative stress (TOS), and increased neuronal death. Conversely, cacao treatment in AD rats improved memory function, reduced anxiety, modulated oxidative stress balance, and decreased neuronal death.</p><p><strong>Conclusion: </strong>The findings suggest that cacao's ability to improve the balance between oxidants and antioxidants and prevent neuronal loss may be the mechanism underlying its beneficial effect against AD-related cognitive and non-cognitive impairments.</p>","PeriodicalId":36527,"journal":{"name":"Neuroscience Insights","volume":"19 ","pages":"26331055241280638"},"PeriodicalIF":2.9,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11418343/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142308698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
CRISPR/CasRx-Mediated Knockdown of Rab7B Restores Incomplete Cell Shape Induced by Pelizaeus-Merzbacher Disease-Associated PLP1 p.Ala243Val. CRISPR/CasRx 介导的 Rab7B 基因敲除可恢复佩里泽斯-默茨巴赫氏病相关 PLP1 p.Ala243Val 诱导的不完整细胞形状。
IF 2.9
Neuroscience Insights Pub Date : 2024-09-13 eCollection Date: 2024-01-01 DOI: 10.1177/26331055241276873
Nana Fukushima, Yuki Miyamoto, Junji Yamauchi
{"title":"CRISPR/CasRx-Mediated Knockdown of Rab7B Restores Incomplete Cell Shape Induced by Pelizaeus-Merzbacher Disease-Associated PLP1 p.Ala243Val.","authors":"Nana Fukushima, Yuki Miyamoto, Junji Yamauchi","doi":"10.1177/26331055241276873","DOIUrl":"https://doi.org/10.1177/26331055241276873","url":null,"abstract":"<p><p>Pelizaeus-Merzbacher disease (PMD, currently known as hypomyelinating leukodystrophy type 1 [HLD1]) is a hereditary hypomyelinating and/or demyelinating disease associated with the proteolipid protein 1 (plp1) gene in the central nervous system (CNS). One of the major causes of this condition is incomplete or defective oligodendroglial cell myelin sheath formation triggered by endoplasmic reticulum (ER) stress and subsequent unfolded protein response (UPR). The HLD1-associated Ala-243-to-Val mutation (p.Ala243Val) of PLP1 is widely recognized to trigger defective oligodendroglial cell morphological differentiation, primarily due to ER stress. We have previously reported that knockdown of Rab7B (also known as Rab42), a small GTP/GDP-binding protein involved in intracellular vesicle trafficking around the lysosome, can recover chemical ER stress-induced incomplete cell shapes in the FBD-102b cell line, a model of oligodendroglial cell morphological differentiation. Here, we present findings indicating that incomplete cell shapes induced by PLP1 p.Ala243Val can be restored by knockdown of Rab7B using the clustered regularly interspaced short palindromic repeats (CRISPR) and CasRx (also known as Cas13d) system. Also, the knockdown promoted the trafficking of PLP1 p.Ala243Val to lysosome-associated membrane protein 1 (LAMP1)-positive organelles. These results highlight the unique role of Rab7B knockdown in modulating oligodendroglial cell morphological changes and potentially facilitating the transport of mutated PLP1 to LAMP1-positive organelles, suggesting its potential as a therapeutic target for alleviating HLD1 phenotypes, at least in part, at the molecular and cellular levels.</p>","PeriodicalId":36527,"journal":{"name":"Neuroscience Insights","volume":"19 ","pages":"26331055241276873"},"PeriodicalIF":2.9,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11402064/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142297449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Neurostructural Consequences of Obstetric Brachial Plexus Palsy in Childhood. 产科臂丛神经麻痹对儿童神经结构的影响
IF 2.9
Neuroscience Insights Pub Date : 2024-09-10 eCollection Date: 2024-01-01 DOI: 10.1177/26331055241278950
Dzerassa Kadieva, Maxim Ulanov, Anna Shestakova, Olga Agranovich, Isak B Blank, Federico Gallo
{"title":"Neurostructural Consequences of Obstetric Brachial Plexus Palsy in Childhood.","authors":"Dzerassa Kadieva, Maxim Ulanov, Anna Shestakova, Olga Agranovich, Isak B Blank, Federico Gallo","doi":"10.1177/26331055241278950","DOIUrl":"https://doi.org/10.1177/26331055241278950","url":null,"abstract":"<p><strong>Background: </strong>Obstetric brachial plexus palsy (OBPP) is a condition impairing limb function caused by birth injury. In 20 to 30% of cases, severe OBPP can cause life constraints in feeding, grooming, and clothing tasks.</p><p><strong>Objective: </strong>The present study, using voxel- and surface-based morphometry (VBM and SBM), examined the brain structure of pediatric OBPP patients to better understand the effects of this peripheral motor deficit on early brain development.</p><p><strong>Methods: </strong>Thirty-six T1-weighted images of 18 patients (2-17 years old, mean age = 11.3, 8 females) and 18 healthy controls (2-17 years old, mean age = 10.1, 8 females) were collected for this study. MRI data were processed and analyzed using the Statistical Parametric Mapping 12 (SPM12) toolbox. The custom pediatric tissue probability map was created with the CerebroMatic (COM) toolbox. The results were considered significant if they survived whole-brain family-wise error correction (<i>P</i> < .05).</p><p><strong>Results: </strong>We have found differences in grey matter volumes in the bilateral anterior hippocampus (left <i>P</i> < .001 and right <i>P</i> = .01) and left cerebellum exterior (Crus I) (<i>P</i> < .001). We have also found differences in cortical thickness in the bilateral parahippocampal gyri (left <i>P</i> = .001 and right <i>P</i> = .005) and right orbitofrontal cortex (OFC) (<i>P</i> < .001).</p><p><strong>Conclusions: </strong>These structural differences might be linked to the altered environmental adaptation that children with OBPP face due to their primary motor deficit. Our findings hint at a complex interplay between motor capabilities, brain structure development, and cognitive functions. However, more research combining neuroimaging, behavioral, cognitive, and clinical data is needed to support stronger conclusions on this subject.</p>","PeriodicalId":36527,"journal":{"name":"Neuroscience Insights","volume":"19 ","pages":"26331055241278950"},"PeriodicalIF":2.9,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11393803/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142297451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In Humans, Insulo-striate Structural Connectivity is Largely Biased Toward Either Striosome-like or Matrix-like Striatal Compartments. 在人类中,胰岛纹状体结构连通性在很大程度上偏向于纹状体样或基质样纹状体区。
IF 2.9
Neuroscience Insights Pub Date : 2024-09-10 eCollection Date: 2024-01-01 DOI: 10.1177/26331055241268079
Adrian T Funk, Asim Ao Hassan, Jeff L Waugh
{"title":"In Humans, Insulo-striate Structural Connectivity is Largely Biased Toward Either Striosome-like or Matrix-like Striatal Compartments.","authors":"Adrian T Funk, Asim Ao Hassan, Jeff L Waugh","doi":"10.1177/26331055241268079","DOIUrl":"10.1177/26331055241268079","url":null,"abstract":"<p><p>The insula is an integral component of sensory, motor, limbic, and executive functions, and insular dysfunction is associated with numerous human neuropsychiatric disorders. Insular efferents project widely, but insulo-striate projections are especially numerous. The targets of these insulo-striate projections are organized into tissue compartments, the striosome and matrix. These striatal compartments have distinct embryologic origins, afferent and efferent connectivity, dopamine pharmacology, and susceptibility to injury. Striosome and matrix appear to occupy separate sets of cortico-striato-thalamo-cortical loops, so a bias in insulo-striate projections toward one compartment may also embed an insular subregion in distinct regulatory and functional networks. Compartment-specific mapping of insulo-striate structural connectivity is sparse; the insular subregions are largely unmapped for compartment-specific projections. In 100 healthy adults, diffusion tractography was utilized to map and quantify structural connectivity between 19 structurally-defined insular subregions and each striatal compartment. Insulo-striate streamlines that reached striosome-like and matrix-like voxels were concentrated in distinct insular zones (striosome: rostro- and caudoventral; matrix: caudodorsal) and followed different paths to reach the striatum. Though tractography was generated independently in each hemisphere, the spatial distribution and relative bias of striosome-like and matrix-like streamlines were highly similar in the left and right insula. 16 insular subregions were significantly biased toward 1 compartment: 7 toward striosome-like voxels and 9 toward matrix-like voxels. Striosome-favoring bundles had significantly higher streamline density, especially from rostroventral insular subregions. The biases in insulo-striate structural connectivity that were identified mirrored the compartment-specific biases identified in prior studies that utilized injected tract tracers, cytoarchitecture, or functional MRI. Segregating insulo-striate structural connectivity through either striosome or matrix may be an anatomic substrate for functional specialization among the insular subregions.</p>","PeriodicalId":36527,"journal":{"name":"Neuroscience Insights","volume":"19 ","pages":"26331055241268079"},"PeriodicalIF":2.9,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11402065/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142297450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Amygdala fMRI-A Critical Appraisal of the Extant Literature. 杏仁核 fMRI--对现有文献的批判性评估。
IF 2.9
Neuroscience Insights Pub Date : 2024-08-13 eCollection Date: 2024-01-01 DOI: 10.1177/26331055241270591
Tim Varkevisser, Elbert Geuze, Jack van Honk
{"title":"Amygdala fMRI-A Critical Appraisal of the Extant Literature.","authors":"Tim Varkevisser, Elbert Geuze, Jack van Honk","doi":"10.1177/26331055241270591","DOIUrl":"10.1177/26331055241270591","url":null,"abstract":"<p><p>Even before the advent of fMRI, the amygdala occupied a central space in the affective neurosciences. Yet this amygdala-centred view on emotion processing gained even wider acceptance after the inception of fMRI in the early 1990s, a landmark that triggered a goldrush of fMRI studies targeting the amygdala in vivo. Initially, this amygdala fMRI research was mostly confined to task-activation studies measuring the magnitude of the amygdala's response to emotional stimuli. Later, interest began to shift more towards the study of the amygdala's resting-state functional connectivity and task-based psychophysiological interactions. Later still, the test-retest reliability of amygdala fMRI came under closer scrutiny, while at the same time, amygdala-based real-time fMRI neurofeedback gained widespread popularity. Each of these major subdomains of amygdala fMRI research has left its marks on the field of affective neuroscience at large. The purpose of this review is to provide a critical assessment of this literature. By integrating the insights garnered by these research branches, we aim to answer the question: What part (if any) can amygdala fMRI still play within the current landscape of affective neuroscience? Our findings show that serious questions can be raised with regard to both the reliability and validity of amygdala fMRI. These conclusions force us to cast doubt on the continued viability of amygdala fMRI as a core pilar of the affective neurosciences.</p>","PeriodicalId":36527,"journal":{"name":"Neuroscience Insights","volume":"19 ","pages":"26331055241270591"},"PeriodicalIF":2.9,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11325331/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141989110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Negative Association of Cognitive Performance With Blood Serum Neurotoxicity and Its Modulation by Human Herpes Virus 5 (HHV5) Seropositivity in Healthy Women. 健康女性认知能力与血清神经毒性的负相关以及人类疱疹病毒 5 (HHV5) 血清阳性对其的调节作用
IF 3.6
Neuroscience Insights Pub Date : 2024-05-31 eCollection Date: 2024-01-01 DOI: 10.1177/26331055241258436
Lisa M James, Effie-Photini Tsilibary, Erik J Wanberg, Apostolos P Georgopoulos
{"title":"Negative Association of Cognitive Performance With Blood Serum Neurotoxicity and Its Modulation by Human Herpes Virus 5 (HHV5) Seropositivity in Healthy Women.","authors":"Lisa M James, Effie-Photini Tsilibary, Erik J Wanberg, Apostolos P Georgopoulos","doi":"10.1177/26331055241258436","DOIUrl":"10.1177/26331055241258436","url":null,"abstract":"<p><p>Identification of early influences on cognitive decline is of paramount importance in order to stem the impacts of decrements in cognitive functioning and to potentially intervene. Thus, here we focused on 132 healthy adult women (age range 26-98 years) to (a) determine whether factors circulating in serum may exert neurotoxic effects in vitro, (b) evaluate associations between serum neurotoxicity and cognitive performance, and (c) assess the influence of human herpes virus (HHV) seroprevalence and other factors on apoptosis and cognitive performance. The results documented that the addition of serum from healthy adult women to neural cell cultures resulted in apoptosis, indicating the presence of circulating neurotoxic factors in the serum. Furthermore, apoptosis increased with age, and was associated with decreased cognitive performance. Stepwise regression evaluating the influence of 6 HHVs on apoptosis and cognitive function revealed that only HHV5 (cytomegalovirus; CMV) seropositivity was significantly associated with apoptosis and cognitive decline, controlling for age. These findings document neurotoxic effects of serum from healthy women across the adult lifespan and suggest a unique detrimental influence associated with CMV seropositivity.</p>","PeriodicalId":36527,"journal":{"name":"Neuroscience Insights","volume":"19 ","pages":"26331055241258436"},"PeriodicalIF":3.6,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11143810/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141200524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 Mesocortical System Encodes the Strength of Subsequent Force Generation. 中皮层系统编码后续力量产生的强度
IF 3.6
Neuroscience Insights Pub Date : 2024-05-30 eCollection Date: 2024-01-01 DOI: 10.1177/26331055241256948
Sho K Sugawara, Yukio Nishimura
{"title":"The Mesocortical System Encodes the Strength of Subsequent Force Generation.","authors":"Sho K Sugawara, Yukio Nishimura","doi":"10.1177/26331055241256948","DOIUrl":"10.1177/26331055241256948","url":null,"abstract":"<p><p>Our minds impact motor outputs. Such mind-motor interactions are critical for understanding motor control mechanisms and optimizing motor performance. In particular, incentive motivation strongly enhances motor performance. Dopaminergic neurons located in the ventral midbrain (VM) are believed to be the center of incentive motivation. Direct projections from the VM to the primary motor cortex constitute a mesocortical pathway. However, the functional role of this pathway in humans remains unclear. Recently, we demonstrated the functional role of the mesocortical pathway in human motor control in the context of incentive motivation by using functional magnetic resonance imaging (fMRI). Incentive motivation remarkably improved not only reaction times but also the peak grip force in subsequent grip responses. Although the reaction time has been used as a proxy for incentive motivation mediated by dopaminergic midbrain activity, the premovement activity of the mesocortical pathway is involved in controlling the force strength rather than the initiation of subsequent force generation. In this commentary, we review our recent findings and discuss remaining questions regarding the functional role of the mesocortical pathway in mind-motor interactions.</p>","PeriodicalId":36527,"journal":{"name":"Neuroscience Insights","volume":"19 ","pages":"26331055241256948"},"PeriodicalIF":3.6,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11141215/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141200551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mitochondria-Associated MicroRNAs and Parkinson's Disease. 线粒体相关微RNA与帕金森病
IF 3.6
Neuroscience Insights Pub Date : 2024-05-24 eCollection Date: 2024-01-01 DOI: 10.1177/26331055241254846
Gayatri Reddy Aaluri, Yashmit Choudhary, Subodh Kumar
{"title":"Mitochondria-Associated MicroRNAs and Parkinson's Disease.","authors":"Gayatri Reddy Aaluri, Yashmit Choudhary, Subodh Kumar","doi":"10.1177/26331055241254846","DOIUrl":"10.1177/26331055241254846","url":null,"abstract":"<p><p>Parkinson's Disease (PD) occurs as a result of the progressive loss of dopaminergic neurons within the substantia nigra causing motor and non-motor symptoms and has become more prevalent within the last several decades. With mitochondria being essential to cellular survival, mitochondrial dysfunction contributes to the disease progression by increasing neuron loss through (1) insufficient ATP production and (2) reactive oxygen species generation. MicroRNAs (miRNAs) are small molecules located throughout cells that regulate gene expression, particularly mitochondrial function. Through their own dysregulation, miRNAs offset the delicate balance of mitochondrial function by altering or dysregulating the expression of proteins, increasing neuroinflammation, increasing retention of toxic substances, limiting the removal of reactive oxygen species, and preventing mitophagy. Improper mitochondrial function places cells at increased risk of apoptosis, a major concern in individuals with PD due to their reduced number of dopaminergic neurons. This article has identified the 17 most promising mitochondrial associated miRNAs within PD: hsa-miR-4639-5p, miR-376a, miR-205, miR-421, miR-34b/c, miR-150, miR-7, miR-132, miR-17-5p, miR-20a, miR-93, miR-106, miR-181, miR-193b, miR-128, miR-181a, and miR-124-3p. These miRNAs alter mitochondrial function and synaptic energy by impeding normal gene expression when up or downregulated. However, there is limited research regarding mitochondria-localized miRNAs that are typically seen in other diseases. Mitochondria-localized miRNA may have a greater impact on mitochondrial dysfunction due to their proximity. Further research is needed to determine the location of these miRNAs and to better understand their regulatory capabilities on mitochondrial and synaptic function within PD.</p>","PeriodicalId":36527,"journal":{"name":"Neuroscience Insights","volume":"19 ","pages":"26331055241254846"},"PeriodicalIF":3.6,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11127579/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141155715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Targeting Reactive Astrocytes in Vascular Dementia: Investigation of Neuronal-Astrocyte-Vascular Interactions. 针对血管性痴呆症中的反应性星形胶质细胞:神经元-星形胶质细胞-血管相互作用研究
IF 2.9
Neuroscience Insights Pub Date : 2024-05-22 eCollection Date: 2024-01-01 DOI: 10.1177/26331055241255332
Pradoldej Sompol
{"title":"Targeting Reactive Astrocytes in Vascular Dementia: Investigation of Neuronal-Astrocyte-Vascular Interactions.","authors":"Pradoldej Sompol","doi":"10.1177/26331055241255332","DOIUrl":"10.1177/26331055241255332","url":null,"abstract":"<p><p>Historically known as neuronal support cells, astrocytes are now widely studied for their close structural and functional interactions with multiple neural cell types and cerebral vessels where they maintain an ideal environment for optimized brain function. Under pathological conditions, astrocytes become reactive and lose key protective functions. In this commentary, we discuss our recent work in The Journal of Neuroscience (Sompol et al., 2023) that showed Ca2+ dysregulation in reactive astrocytes, as well as hyperactivation of the Ca2+-dependent protein phosphatase calcineurin (CN) and the Nuclear Factor of Activated T Cells (NFATs), in a diet-induced hyperhomocystienemia (HHcy) mouse model of Vascular Contributions to Cognitive Impairment and Dementia (VCID). Intravital multiphoton imaging coupled with whisker stimulation was used to explore astrocyte Ca2+ signaling and neurovascular function under active phase, fully awake conditions. Interestingly, evoked Ca2+ transients in individual astrocytes were greater, even though intercorrelated Ca2+ signaling across networks of astrocytes was impaired in HHcy mice. Blockade of astrocytic CN/NFAT reduced signs of astrocyte reactivity, normalized cerebrovascular function, and improved hippocampal synaptic strength and hippocampal dependent cognition in HHcy mice, revealing a previously unrecognized deficit regarding neuron-astrocyte-vascular interactions. These findings strongly support the use of astrocyte targeting strategies to mitigate pathophysiological changes associated with VCID and other Alzheimer's-related dementias.</p>","PeriodicalId":36527,"journal":{"name":"Neuroscience Insights","volume":"19 ","pages":"26331055241255332"},"PeriodicalIF":2.9,"publicationDate":"2024-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11113058/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141088182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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