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Memory is improved and reflex maturation accelerated in the progeny of rat dams that consumed pequi (Caryocar Brasiliense). 食用枇杷(Caryocar Brasiliense)的大鼠后代记忆力增强,反射成熟加快。
IF 2.7 4区 医学
Brain Research Pub Date : 2024-11-17 DOI: 10.1016/j.brainres.2024.149318
Suedna da Costa Silva Kindelan, Michelly Pires Queiroz, Jany Jacielly Dos Santos, Maria Lucia de Azevedo Oliveira, Paloma Cristina Milhomens Ferreira Melo, Camila Carolina de Menezes Santos Bertozzo, Juliano Carlo Rufino Freitas, Natália Dantas de Oliveira, Raphaela Veloso Rodrigues Dantas, Marta Suely Madruga, Juliana Késsia Barbosa Soares
{"title":"Memory is improved and reflex maturation accelerated in the progeny of rat dams that consumed pequi (Caryocar Brasiliense).","authors":"Suedna da Costa Silva Kindelan, Michelly Pires Queiroz, Jany Jacielly Dos Santos, Maria Lucia de Azevedo Oliveira, Paloma Cristina Milhomens Ferreira Melo, Camila Carolina de Menezes Santos Bertozzo, Juliano Carlo Rufino Freitas, Natália Dantas de Oliveira, Raphaela Veloso Rodrigues Dantas, Marta Suely Madruga, Juliana Késsia Barbosa Soares","doi":"10.1016/j.brainres.2024.149318","DOIUrl":"https://doi.org/10.1016/j.brainres.2024.149318","url":null,"abstract":"<p><p>This study evaluated the influence of maternal consumption of pequi pulp and nuts during pregnancy and lactation on reflex and somatic maturation and memory performance in rat offspring. The pups were divided into three groups: Control, treated with distilled water; a Pulp group and a Nuts group, treated with 2000 mg/kg of body weight of pequi pulp and nuts, respectively. Reflex and somatic maturation of the offspring were evaluated during lactation. Short and long-term memory consolidation in adolescent offspring were measured by evaluating habituation to the open field and object recognition. Data showed an acceleration of reflex maturation in three of the seven parameters evaluated in the Nuts group and four parameters in the Pulp group compared to the control. There was an acceleration in the appearance of somatic maturation in one parameter in the Nuts group and three in the pulp group compared to the control. The long-term object recognition rate was higher in the Nuts group compared to the control and highest in the Pulp group. Maternal levels of malonaldehyde in the brain were measured and their levels in the Pulp and Nuts groups were lower than those in the Control group. We can conclude that consumption of both pulp and pequi nuts promoted a reduction in oxidative stress in the maternal brain, promoted acceleration of reflex and somatic maturation, and improved long-term memory in the offspring, with these effects being more intense in the Pulp group.</p>","PeriodicalId":9083,"journal":{"name":"Brain Research","volume":" ","pages":"149318"},"PeriodicalIF":2.7,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142675275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
DLGAP3 suppresses malignant behaviors of glioma cells via inhibiting RGS12-mediated MAPK/ERK signaling. DLGAP3 通过抑制 RGS12 介导的 MAPK/ERK 信号转导抑制胶质瘤细胞的恶性行为。
IF 2.7 4区 医学
Brain Research Pub Date : 2024-11-15 DOI: 10.1016/j.brainres.2024.149334
Jing Wei, Yuan Li, Fangzheng Jiao, Xiaoya Wang, Han Zhou, Yifan Qiao, Zihan Yuan, Chao Qian, Yanlong Tian, Yan Fang
{"title":"DLGAP3 suppresses malignant behaviors of glioma cells via inhibiting RGS12-mediated MAPK/ERK signaling.","authors":"Jing Wei, Yuan Li, Fangzheng Jiao, Xiaoya Wang, Han Zhou, Yifan Qiao, Zihan Yuan, Chao Qian, Yanlong Tian, Yan Fang","doi":"10.1016/j.brainres.2024.149334","DOIUrl":"https://doi.org/10.1016/j.brainres.2024.149334","url":null,"abstract":"<p><strong>Background: </strong>Glioma is the most common malignant tumor of the central nervous system, and is characterized by high recurrence, poor prognosis and especially complex pathogenesis. The synaptic plasticity-related protein DLGAP3 is mainly involved in the assembly and function of postsynaptic density complex. It's widely known that DLGAP3 participating in the occurrence of various neuropsychiatric diseases, but its role in glioma tumorigenesis remains largely unclear.</p><p><strong>Methods: </strong>We ectopically expressed and knocked down DLGAP3 in glioma cells to perform a series of functional studies in vitro. Meanwhile, western blot analysis, co-immunoprecipitation, enrichment analysis and dual-luciferase reporter system assays were performed to explore the mechanism of DLGAP3 suppressing glioma tumorigenesis and progression.</p><p><strong>Results: </strong>We found that DLGAP3 was low expressed in gliomas, and decreased DLGAP3 expression was strongly correlated with poor survival of glioma patients. Ectopic expression of DLGAP3 in glioma cell lines dramatically inhibited cell proliferation, invasion and migration. In addition, our data also showed that DLGAP3 can tightly connected with RGS12, and DLGAP3 overexpression significantly increased the expression of RGS12 and inhibited the phosphorylation levels of MEK and ERK. Furthermore, the RGS12 inhibited transcription and translation of BRAF, which further decreased the activity of MAPK/ERK signaling pathway. This suggests that DLGAP3 may act as a tumor suppressor in gliomas and inhibits glioma tumorigenesis by regulating RGS12 and the downstream MAPK/ERK signals axis.</p><p><strong>Conclusion: </strong>Our data indicates that DLGAP3 is a potential tumor suppressor and valuable prognostic biomarker in gliomas.</p>","PeriodicalId":9083,"journal":{"name":"Brain Research","volume":" ","pages":"149334"},"PeriodicalIF":2.7,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142646852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Gamma oscillation optimally predicts finger movements 伽马振荡可最佳预测手指运动。
IF 2.7 4区 医学
Brain Research Pub Date : 2024-11-14 DOI: 10.1016/j.brainres.2024.149335
Qi Chen, Elizabeth Flad, Rachel N. Gatewood, Maya S. Samih, Talon Krieger, Yan Gai
{"title":"Gamma oscillation optimally predicts finger movements","authors":"Qi Chen,&nbsp;Elizabeth Flad,&nbsp;Rachel N. Gatewood,&nbsp;Maya S. Samih,&nbsp;Talon Krieger,&nbsp;Yan Gai","doi":"10.1016/j.brainres.2024.149335","DOIUrl":"10.1016/j.brainres.2024.149335","url":null,"abstract":"<div><div>Our fingers are the most dexterous and complicated parts of our body and play a significant role in our daily activities. Non-invasive techniques, such as Electroencephalography (EEG) and Electromyography (EMG) can be used to collect neural and muscular signals related to finger movements. In this study, we combined an 8-channel EMG and a 31-channel EEG while the human subject moved one of the five fingers on the right hand. To identify the best EEG frequency features that encode distinct finger movements, we systematically examined the decoding accuracies of the slow-cortical potentials and three types of sensorimotor rhythms, namely the Mu, beta, and gamma oscillations. For both EMG and EEG, we came up with a simple and unified root mean square or power approach that avoided the complex signal features used by previous studies. The signal features were then fed into a feedforward artificial-neural-network (ANN) classifier. We found that the low-gamma oscillation provided the best decoding performance over the other frequency bands, ranging from 65.0 % to 89.0 %, which was comparable to the EMG performance. Combining EMG and low gamma into a single ANN can further improve the outcome for subjects who had showed suboptimal performances with EMG or EEG alone. This study provided a simple and efficient algorithm for prosthetics that assist patients with sensorimotor impairments.</div></div>","PeriodicalId":9083,"journal":{"name":"Brain Research","volume":"1848 ","pages":"Article 149335"},"PeriodicalIF":2.7,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142638363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High-gamma frequency flash stimulation as a possible cognitive facilitator in rat pups. 高伽马频率闪光刺激可能促进大鼠幼崽的认知能力
IF 2.7 4区 医学
Brain Research Pub Date : 2024-11-14 DOI: 10.1016/j.brainres.2024.149314
Yu Fu, Qingfeng Zhai
{"title":"High-gamma frequency flash stimulation as a possible cognitive facilitator in rat pups.","authors":"Yu Fu, Qingfeng Zhai","doi":"10.1016/j.brainres.2024.149314","DOIUrl":"https://doi.org/10.1016/j.brainres.2024.149314","url":null,"abstract":"<p><p>High-gamma frequency flashes can enhance cognition by synchronizing neural oscillations in mammals. Early flash treatment promotes the development of improved cognitive functions in young children. However, it is unclear whether exposure to high-gamma frequency flashes in preschool-aged individuals affects cognition in preadolescents by regulating neural oscillations in the brain. Here, we aimed to investigate the effects of gamma-frequency flashes on cognitive ability. In this study, the effect of high-frequency flicker on cognitive performance was verified by behavioural experiments such as the open-field test and the water maze, but also proteomics. We found that external 40 Hz and 70 Hz frequency flashes synchronized neural oscillations at the corresponding frequencies in the primary visual cortex (V1) of rats. Rats that underwent 70 Hz flash intervention had better cognitive behavioural performance in the early stages of training. The 70 Hz flash frequency upregulated proteins associated with neuronal growth and differentiation, such as Snapin, FoxO3, Hspa12a, and Penk, and activated the MAPK signalling pathway, signalling pathway regulating stem cell pluripotency, and the neuroactive ligand-receptor interaction pathway. These proteins and pathways play important roles in cognitive functions. Our study revealed that 70 Hz flashes received by young children early in their development substantially promote the growth of cognitive capabilities in the brain. Exposure to 70 Hz flashes may be a new intervention method and a new strategy for improving cognition.</p>","PeriodicalId":9083,"journal":{"name":"Brain Research","volume":" ","pages":"149314"},"PeriodicalIF":2.7,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Upstream regulation of microRNA-9 through a complex cellular machinery during neurogenesis 在神经发生过程中,通过复杂的细胞机制对 microRNA-9 进行上游调控。
IF 2.7 4区 医学
Brain Research Pub Date : 2024-11-14 DOI: 10.1016/j.brainres.2024.149328
Diji Kuriakose , Hong-mei Zhu , Yi-ling Zhao , Fuad A. Iraqi , Grant Morahan , Zhi-cheng Xiao
{"title":"Upstream regulation of microRNA-9 through a complex cellular machinery during neurogenesis","authors":"Diji Kuriakose ,&nbsp;Hong-mei Zhu ,&nbsp;Yi-ling Zhao ,&nbsp;Fuad A. Iraqi ,&nbsp;Grant Morahan ,&nbsp;Zhi-cheng Xiao","doi":"10.1016/j.brainres.2024.149328","DOIUrl":"10.1016/j.brainres.2024.149328","url":null,"abstract":"<div><h3>Summary</h3><div>While microRNAs (miRs) like miR-9 are crucial for neurogenesis and neuronal differentiation, their regulatory mechanisms are not well understood. miR-9 is highly expressed in the brain and plays a significant role in neurogenesis. Using the Collaborative Cross resource, we identified significant quantitative trait loci (QTL) through genetic analyses. We then characterized over 130 candidate genes within these QTL regions using RNA interference, qPCR, and neuronal differentiation assays, narrowing them down to 13 promising candidates. Among these, Panx2, Polr1c, and Mgea5 were found to colocalize in the neurogenic niches of the SVZ and DG regions, as shown by immunofluorescence. Further ChIP-seq and Co-IP analyses revealed their interaction and binding to the miR-9 locus, forming a DNA-protein regulatory complex we termed ’miRSome-9.’ A 3C/ChIP-loop assay confirmed the chromatin organization of miRSome-9 at the miR-9 locus, shedding light on the upstream mechanisms regulating miR-9 expression during neurogenesis.</div></div>","PeriodicalId":9083,"journal":{"name":"Brain Research","volume":"1848 ","pages":"Article 149328"},"PeriodicalIF":2.7,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142638364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Diosmin alleviates NLRP3 inflammasome-dependent cellular pyroptosis after stroke through RSK2/CREB pathway. 地奥司明通过RSK2/CREB通路缓解中风后NLRP3炎症体依赖性细胞脓毒症。
IF 2.7 4区 医学
Brain Research Pub Date : 2024-11-13 DOI: 10.1016/j.brainres.2024.149336
Yanfei Lu, Min Shi, Wei Huang, Fenfen Li, Haowei Liang, Wenbing Liu, Tianyi Huang, Zhen Xu
{"title":"Diosmin alleviates NLRP3 inflammasome-dependent cellular pyroptosis after stroke through RSK2/CREB pathway.","authors":"Yanfei Lu, Min Shi, Wei Huang, Fenfen Li, Haowei Liang, Wenbing Liu, Tianyi Huang, Zhen Xu","doi":"10.1016/j.brainres.2024.149336","DOIUrl":"https://doi.org/10.1016/j.brainres.2024.149336","url":null,"abstract":"<p><p>In the context of our previous analyses on the main active ingredients of Jieyudan, a classic formula targeting aphasia in stroke, we further delve into the function and mechanisms of its active ingredient, Diosmin (DM), which may exert neuroprotective effects, in ischemic stroke. Herein, bioinformatics analysis revealed targets of DM and their intersection with differentially expressed genes in ischemic stroke. Middle cerebral artery occlusion (MCAO) rats and oxygen-glucose deprivation (OGD) cells were used to construct in vivo and in vitro models of ischemic stroke. The effects of DM on MCAO rats were assessed by Zea-Longa score, Morris water maze, TTC staining, Nissl staining, immunohistochemistry, and Western blot. At the cellular level, cell counting kit-8 assay and Western blot were carried out to verify the mechanism of DM in ischemic stroke. In vivo, DM decreased neurological deficit score, cerebral infarct volume and neuronal damage, and improved cognitive function in MCAO rats. In vitro, DM increased the viability of OGD-treated cells. In addition, DM down-regulated the expressions of NLR family pyrin domain containing 3 (NLRP3) and pyroptosis-associated proteins, while up-regulating ribosomal protein S6 kinase A3 (RSK2) level and activating cyclic-AMP response element-binding protein (CREB) signaling. Conversely, RSK2 inhibitor LJH685 reduced the viability and promoted pyroptosis-associated protein levels, which also partially reversed the effects of DM in vitro. Collectively, DM plays a therapeutic role in ischemic stroke by inhibiting NLRP3 inflammasome-mediated cellular pyroptosis via the RSK2/CREB pathway.</p>","PeriodicalId":9083,"journal":{"name":"Brain Research","volume":" ","pages":"149336"},"PeriodicalIF":2.7,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142638362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In vivo characterization of ACE2 expression in Sprague-Dawley rats and cultured primary brain pericytes highlights the utility of Rattus norvegicus in the study of COVID-19 brain pathophysiology. ACE2在Sprague-Dawley大鼠和培养的原代脑周细胞中表达的体内特征突出表明了鼠脑在研究COVID-19脑病理生理学中的实用性。
IF 2.7 4区 医学
Brain Research Pub Date : 2024-11-12 DOI: 10.1016/j.brainres.2024.149333
Eugene Park, Elaine Liu, Andrew J Baker
{"title":"In vivo characterization of ACE2 expression in Sprague-Dawley rats and cultured primary brain pericytes highlights the utility of Rattus norvegicus in the study of COVID-19 brain pathophysiology.","authors":"Eugene Park, Elaine Liu, Andrew J Baker","doi":"10.1016/j.brainres.2024.149333","DOIUrl":"https://doi.org/10.1016/j.brainres.2024.149333","url":null,"abstract":"<p><p>A high number of COVID-19 patients report ongoing neurological impairments including headache, fatigue and memory impairments. Our understanding of COVID-19 disease mechanisms in the brain is limited and relies on post-mortem human tissues, in vitro studies in various cell lines (both human and animal) as well as preclinical studies in a variety of species. Notably the use of rats in the study of COVID-19 has been scarce in part due to early reports of low infectivity of the original Wuhan strain in mice and rats. Evidence has shown that subsequent strains that have mutated from the original strain and are capable of infection in rats. Here we present an immunohistological characterization of ACE2 expression in the rat brain perivascular region. We found ACE2 to be expressed in pericytes but not endothelial cells or astrocytes in the perivascular space. We further examined the uptake of Omicron variants 1.1.529 and BA.2 receptor binding domains (RBD) of the SARS-CoV2 spike protein in primary brain pericytes derived from rats. We demonstrate that rat primary brain pericytes are susceptible to SARS-CoV2 spike protein uptake and induce functional changes in pericytes associated with a reduction in tight junction protein expression. These data provide evidence that rat primary cell responses to SARS-CoV2 infection are consistent with reports of infectivity in other species (transgenic mice expressing hACE2, ferrets, hamsters) and supports the use of this model organism with a long history of use in the study of disease which should be leveraged for study of COVID-19 in the brain.</p>","PeriodicalId":9083,"journal":{"name":"Brain Research","volume":" ","pages":"149333"},"PeriodicalIF":2.7,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142614673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Neurotranscriptomic and behavioral effects of ISRIB, and its therapeutic effects in the traumatic brain injury model in zebrafish ISRIB 的神经转录组学和行为学效应及其在斑马鱼创伤性脑损伤模型中的治疗效果。
IF 2.7 4区 医学
Brain Research Pub Date : 2024-11-12 DOI: 10.1016/j.brainres.2024.149329
Nikita P. Ilyin , Anton D. Shevlyakov , Galina A. Boyko , Anastasia M. Moskalenko , Aleksey N. Ikrin , David S. Galstyan , Tatiana O. Kolesnikova , Nataliia V. Katolikova , Sergei A. Chekrygin , Lee Wei Lim , LongEn Yang , Murilo S. De Abreu , Konstantin B. Yenkoyan , Allan V. Kalueff , Konstantin A. Demin
{"title":"Neurotranscriptomic and behavioral effects of ISRIB, and its therapeutic effects in the traumatic brain injury model in zebrafish","authors":"Nikita P. Ilyin ,&nbsp;Anton D. Shevlyakov ,&nbsp;Galina A. Boyko ,&nbsp;Anastasia M. Moskalenko ,&nbsp;Aleksey N. Ikrin ,&nbsp;David S. Galstyan ,&nbsp;Tatiana O. Kolesnikova ,&nbsp;Nataliia V. Katolikova ,&nbsp;Sergei A. Chekrygin ,&nbsp;Lee Wei Lim ,&nbsp;LongEn Yang ,&nbsp;Murilo S. De Abreu ,&nbsp;Konstantin B. Yenkoyan ,&nbsp;Allan V. Kalueff ,&nbsp;Konstantin A. Demin","doi":"10.1016/j.brainres.2024.149329","DOIUrl":"10.1016/j.brainres.2024.149329","url":null,"abstract":"<div><div>Traumatic brain injury (TBI) is a global medical concern and has a lasting impact on brain activity with high risks of mortality. Current treatments are inadequate for repairing damaged brain cells or correcting cognitive and behavioral disabilities in TBI patients. Mounting evidence links TBI to the activation of the Integrated Stress Response (ISR) signaling in the brain. A novel small molecule, ISRIB, is an effective inhibitor of the ISR pathway, offering potential advantages for brain health. Here, we investigated how ISRIB affects brain transcriptome and behavior in zebrafish TBI model evoked by telencephalic brain injury. Overall, while TBI diminished memory and social behavior in zebrafish, administering ISRIB post-injury markedly reduced these behavioral deficits, and modulated brain gene expression, rescuing TBI-activated pathways related to inflammation and brain cell development. Collectively, this supports the role of brain ISR in TBI, and suggests potential utility of ISRIB for the treatment of TBI-related states.</div></div>","PeriodicalId":9083,"journal":{"name":"Brain Research","volume":"1848 ","pages":"Article 149329"},"PeriodicalIF":2.7,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142614686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ViTAD: Leveraging modified vision transformer for Alzheimer’s disease multi-stage classification from brain MRI scans ViTAD:利用改进的视觉转换器从脑磁共振成像扫描中对阿尔茨海默病进行多阶段分类。
IF 2.7 4区 医学
Brain Research Pub Date : 2024-11-12 DOI: 10.1016/j.brainres.2024.149302
Md. Ashif Mahmud Joy , Shamima Nasrin , Ayesha Siddiqua , Dewan Md. Farid
{"title":"ViTAD: Leveraging modified vision transformer for Alzheimer’s disease multi-stage classification from brain MRI scans","authors":"Md. Ashif Mahmud Joy ,&nbsp;Shamima Nasrin ,&nbsp;Ayesha Siddiqua ,&nbsp;Dewan Md. Farid","doi":"10.1016/j.brainres.2024.149302","DOIUrl":"10.1016/j.brainres.2024.149302","url":null,"abstract":"<div><div>Alzheimer’s disease (AD) is a progressive neurological disorder that significantly impairs cognitive functions, particularly memory and thinking skills. The presence of AD in millions of individuals worldwide constitutes a substantial global health challenge. Timely and accurate diagnosis of AD is critical for effective management and improved patient outcomes. This study introduces ViTAD, an innovative method for classifying five stages of AD from brain MRI images, leveraging a Vision Transformer (ViT) model. The proposed model modifies Google’s ViT architecture, incorporating fine-tuned hyperparameters and additional layers to enhance its performance for AD stage detection. The dataset comprises 1,296 brain MRI images from the ADNI dataset, covering five stages of AD: Cognitively Normal (CN), Early Mild Cognitive Impairment (EMCI), Late Mild Cognitive Impairment (LMCI), Mild Cognitive Impairment (MCI), and Alzheimer’s Disease (AD). Our preprocessing pipeline includes grayscale to RGB conversion, image cropping, and the application of a Laplacian sharpening filter to enhance image clarity. Data augmentation was performed using horizontal/vertical flips, zoom, and rotation to ensure model robustness. We allocated 85% of the dataset for training and 15% for testing. Upon training the model for 20 epochs with a learning rate of 0.0001, ViTAD achieved a remarkable 99.98% accuracy, with 100% precision and an F1-score of 1.00. ViTAD’s superior performance in the multi-class classification task outperforms several conventional CNN-based models such as DenseNet and EfficientNet, which struggled with the 5-class AD detection task. Additionally, ViTAD demonstrated high efficiency, achieving optimal accuracy within only 8 epochs, far surpassing traditional CNN models in speed and accuracy. These findings highlight the significant potential of ViTAD as an automated, accurate, and efficient tool for early diagnosis of AD, offering valuable support in clinical settings.</div></div>","PeriodicalId":9083,"journal":{"name":"Brain Research","volume":"1847 ","pages":"Article 149302"},"PeriodicalIF":2.7,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142614691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cellular stress response and neuroprotection of flavonoids in neurodegenerative diseases: Clinical insights into targeted therapy and molecular signaling pathways 黄酮类化合物在神经退行性疾病中的细胞应激反应和神经保护作用:对靶向治疗和分子信号通路的临床见解。
IF 2.7 4区 医学
Brain Research Pub Date : 2024-11-12 DOI: 10.1016/j.brainres.2024.149310
Biswajit Kumar Utpal , Baishakhi Sutradhar , Mehrukh Zehravi , Sherouk Hussein Sweilam , Trupti Pratik Durgawale , Uppuluri Varuna Naga Venkata Arjun , Thukani Sathanantham Shanmugarajan , Shruthi Paramasivam Kannan , P. Dharani Prasad , Md. Rageeb Md. Usman , Konatham Teja Kumar Reddy , Rokeya Sultana , Mohammed Ali Alshehri , Safia Obaidur Rab , Muath Suliman , Talha Bin Emran
{"title":"Cellular stress response and neuroprotection of flavonoids in neurodegenerative diseases: Clinical insights into targeted therapy and molecular signaling pathways","authors":"Biswajit Kumar Utpal ,&nbsp;Baishakhi Sutradhar ,&nbsp;Mehrukh Zehravi ,&nbsp;Sherouk Hussein Sweilam ,&nbsp;Trupti Pratik Durgawale ,&nbsp;Uppuluri Varuna Naga Venkata Arjun ,&nbsp;Thukani Sathanantham Shanmugarajan ,&nbsp;Shruthi Paramasivam Kannan ,&nbsp;P. Dharani Prasad ,&nbsp;Md. Rageeb Md. Usman ,&nbsp;Konatham Teja Kumar Reddy ,&nbsp;Rokeya Sultana ,&nbsp;Mohammed Ali Alshehri ,&nbsp;Safia Obaidur Rab ,&nbsp;Muath Suliman ,&nbsp;Talha Bin Emran","doi":"10.1016/j.brainres.2024.149310","DOIUrl":"10.1016/j.brainres.2024.149310","url":null,"abstract":"<div><div>Neurodegenerative diseases (NDs) are caused by the gradual decline of neuronal structure and function, which presents significant challenges in treatment. Cellular stress responses significantly impact the pathophysiology of these disorders, often exacerbating neuronal damage. Plant-derived flavonoids have demonstrated potential as neuroprotective agents due to their potent anti-inflammatory, anti-apoptotic, and antioxidant properties. This review provides an in-depth analysis of the molecular processes and clinical insights that cause the neuroprotective properties of flavonoids in NDs. By controlling essential signaling pathways such as Nrf2/ARE, MAPK, and PI3K/Akt, flavonoids can lower cellular stress and improve neuronal survival. The study discusses the challenges of implementing these discoveries in clinical practice and emphasizes the therapeutic potential of specific flavonoids and their derivatives. Flavonoids are identified as potential therapeutic agents for NDs, potentially slowing progression by regulating cellular stress and improving neuroprotection despite their potential medicinal uses and clinical challenges. The study designed a strategy to identify literature published in prestigious journals, utilizing search results from PubMed, Scopus, and WOS. We selected and investigated original studies, review articles, and research reports published until 2024. It suggests future research and therapeutic approaches to effectively utilize the neuroprotective properties of flavonoids.</div></div>","PeriodicalId":9083,"journal":{"name":"Brain Research","volume":"1847 ","pages":"Article 149310"},"PeriodicalIF":2.7,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142614669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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