Article
Clinical Neurology
Eva Davila-Bouziguet, Arnau Casoliba-Melich, Georgina Targa-Fabra, Lorena Galera-Lopez, Andres Ozaita, Rafael Maldonado, Jesus Avila, Jose M. Delgado-Garcia, Agnes Gruart, Eduardo Soriano, Marta Pascual
Summary: Alzheimer's disease is a neurodegenerative disease characterized by the accumulation of amyloid-beta and hyperphosphorylated Tau, imbalanced neuronal activity, and cognitive deficits. A new clinical entity has been identified, which shows amyloid-beta and Tau pathologies but preserved cognition. A study using mice models found that J20/VLW mice, which accumulate amyloid-beta and hyperphosphorylated Tau, exhibit preserved hippocampal rhythmic activity and cognition, while single mutant mice show significant alterations. Furthermore, the overexpression of mutant human Tau in the hippocampal interneurons leads to a specific hyperphosphorylated Tau signature. These findings contribute to understanding the mechanisms underlying cognitive preservation in non-demented individuals with Alzheimer's disease neuropathology.
Article
Biochemistry & Molecular Biology
Laura Valles-Saiz, Rocio Peinado-Cahuchola, Jesus Avila, Felix Hernandez
Summary: Tau, a cytoskeletal protein mainly expressed in neurons, plays important roles in multiple cellular processes. This study reveals that Tau4R is the main isoform of tau expressed in the kidney, particularly in podocytes. Knockout mice without tau display a more dynamic cytoskeleton in podocytes and exhibit glomerular damage and reduced urinary creatinine.
CELLULAR AND MOLECULAR LIFE SCIENCES
(2022)
Article
Neurosciences
Juan R. Perea, Marta Bolos, Raquel Cuadros, Esther Garcia, Vega Garcia-Escudero, Felix Hernandez, Roisin M. McManus, Michael T. Heneka, Jesus Avila
Summary: This study demonstrates that inhibiting p38 can attenuate the toxic effect of tau in microglia and enhance microglia-mediated tau phagocytosis.
MOLECULAR NEUROBIOLOGY
(2022)
Article
Multidisciplinary Sciences
Juan R. Perea, Esther Garcia, Laura Valles-Saiz, Raquel Cuadros, Felix Hernandez, Marta Bolos, Jesus Avila
Summary: Tauopathies are neurodegenerative diseases characterized by the accumulation of hyperphosphorylated tau protein. Inflammation, particularly the activation of microglia, is also involved in these diseases. The p38 MAPK pathway, primarily expressed in glia, has been associated with tau phosphorylation in neurodegenerative diseases like Alzheimer's Disease. Using a mouse model, researchers found increased p38 activation in microglia of the hippocampus during aging. Interestingly, these mice also displayed activated rod microglia, although p38 activation was decreased in this subpopulation. This suggests that rod microglia may have a neuroprotective phenotype in the context of tau pathology.
SCIENTIFIC REPORTS
(2022)
Article
Biochemistry & Molecular Biology
Elena Tortosa, Arundhati Sengupta Ghosh, Qingling Li, Weng Ruh Wong, Trent Hinkle, Wendy Sandoval, Christopher M. Rose, Casper C. Hoogenraad
Summary: The phosphorylation and membrane localization of DLK, a component of MAPK, is crucial for its activation during neuronal stress responses. The recruitment of DLK to specific vesicles upon stress induces kinase activation, which is essential for neuronal survival and degeneration.
Article
Geriatrics & Gerontology
Raul Fernandez Perez, Juan Jose Alba-Linares, Juan Ramon Tejedor, Agustin Fernandez Fernandez, Miguel Calero, Aurora Roman-Dominguez, Consuelo Borras, Jose Vina, Jesus Avila, Miguel Medina, Mario Fernandez Fraga
Summary: The study reveals the presence of dementia-associated epigenetic patterns before diagnosis, highlighting the potential importance of these epigenetic alterations in the development of dementia. The findings suggest that epigenetic biomarkers based on peripheral tissues may be useful for disease detection.
JOURNALS OF GERONTOLOGY SERIES A-BIOLOGICAL SCIENCES AND MEDICAL SCIENCES
(2022)
Article
Neurosciences
Alvaro Sebastian-Serrano, Jesus Merchan-Rubira, Caternia Di Lauro, Carolina Bianchi, Lucia Soria-Tobar, Sonoko L. Narisawa, Jose L. Millan, Jesus Avila, Felix Hernandez, Miguel Diaz-Hernandez
Summary: This study demonstrates that increased activity of tissue-nonspecific alkaline phosphatase (TNAP) is critical for Tau-induced neurotoxicity. Upregulation of TNAP leads to intracellular Tau hyperphosphorylation and aggregation in neighboring cells, while genetic disruption of TNAP reduces the dephosphorylation of extracellular Tau, decreasing neuronal hyperactivity, brain atrophy, and hippocampal neuronal death. These findings suggest that TNAP blockade may be a novel and efficient therapy for tauopathies.
NEUROBIOLOGY OF DISEASE
(2022)
Review
Endocrinology & Metabolism
Enrique Blazquez, Veronica Hurtado-Carneiro, Yannick LeBaut-Ayuso, Esther Velazquez, Luis Garcia-Garcia, Francisca Gomez-Oliver, Juan Miguel Ruiz-Albusac, Jesus Avila, Miguel Angel Pozo
Summary: Several neurological diseases share similar pathological alterations, including neuroinflammation and altered brain glucose metabolism. Insulin and brain glucose metabolism abnormalities are considered as key pathological substrates for these diseases and may serve as potential therapeutic targets.
FRONTIERS IN ENDOCRINOLOGY
(2022)
Review
Cell Biology
Daniel Ruiz-Gabarre, Almudena Carnero-Espejo, Jesus Avila, Vega Garcia-Escudero
Summary: Tau protein, encoded by the MAPT gene, has multiple physiological functions and is associated with various pathologies. The splicing of MAPT transcripts is complex, generating multiple isoforms that are spatially and developmentally regulated. These Tau isoforms play important roles in both physiology and pathology.
Article
Biochemistry & Molecular Biology
Raquel Cuadros, Mar Perez, Daniel Ruiz-Gabarre, Felix Hernandez, Vega Garcia-Escudero, Jesus Avila
Summary: W-Tau, a new human-specific splicing isoform, can inhibit the aggregation of tau and β-amyloid peptides through its unique 18-amino-acid sequence.
ACS CHEMICAL NEUROSCIENCE
(2022)
Review
Neurosciences
Alejandro Anton-Fernandez, Laura Valles-Saiz, Jesus Avila, Felix Hernandez
Summary: Tau protein is mainly localized in the cytoplasm of neuronal cells but can also be found in the cell nucleus, where it binds to nucleic acids. The increase in nuclear tau during aging may contribute to the activation of transposons and accelerate aging.
Article
Clinical Neurology
Rocio Alfaro-Ruiz, Carolina Aguado, Alejandro Martin-Belmonte, Ana Esther Moreno-Martinez, Jesus Merchan-Rubira, Felix Hernandez, Jesus Avila, Yugo Fukazawa, Rafael Lujan
Summary: N-methyl-D-aspartate receptors are important in Alzheimer's disease, and their expression and localization differ at synaptic and extrasynaptic sites, which is associated with accumulation of phospho-tau.
Review
Neurosciences
Natalia Molinero, Alejandro Anton-Fernandez, Falix Hernandez, Jesus Avila, Begona Bartolome, M. Victoria Moreno-Arribas
Summary: Gut microbiota is a diverse population of microorganisms in the gastrointestinal tract that influences host health and disease. Age is a conditioning factor for the vitality of the gut microbiota, and aging is a primary risk factor for neurodegenerative diseases like Alzheimer's disease (AD). This paper summarizes the emerging evidence on the link between the oral and gut microbiome and neurodegeneration, with a focus on AD.
Article
Biochemistry & Molecular Biology
Laura Valles-Saiz, Jesus avila, Felix Hernandez
Summary: The dysregulation of transposable elements is involved in neurodegenerative disorders. This study investigated the protective effects of the reverse transcriptase inhibitor lamivudine in a mouse model of Alzheimer's disease. The results showed that lamivudine treatment reduced histopathological markers of tauopathies and improved motor and cognitive functions. Additional experiments revealed that tau promotes the insertion of transposable elements, and lamivudine inhibits this insertion. These findings suggest that early administration of lamivudine may attenuate the progression of tauopathies.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Neurosciences
Indalo Domene-Serrano, Raquel Cuadros, Felix Hernandez, Jesus Avila, Ismael Santa-Maria
Summary: This study accurately predicted, analyzed, and understood tau protein structure and the conformational basis for the neuroprotective role of W-tau using a tridimensional deep learning-based approach and in vitro polymerization assay. The findings demonstrate the importance of the structure-function relationship on the neuroprotective behavior of W-tau inhibiting tau fibrillization in vitro.
JOURNAL OF ALZHEIMERS DISEASE REPORTS
(2023)
Article
Neurosciences
Song Xue, Feng Kong, Yiying Song, Jia Liu
Summary: This study used resting-state functional magnetic resonance imaging to explore the relationship between individual's spontaneous neural activity and social interaction anxiety in a nonclinical population. The results showed that social interaction anxiety was correlated with the fractional amplitude of low-frequency fluctuations in several brain regions, and that emotional intelligence partially mediated this relationship. This study provides evidence for the neural basis of social interaction anxiety in the normal population and highlights the role of emotional intelligence in this anxiety.
NEUROSCIENCE LETTERS
(2024)
Article
Neurosciences
Katsuyuki Yamaguchi, Takuya Yazawa
Summary: This study provides morphometric data on the development of the human medullary arcuate nucleus (AN) by examining the brains of preterm and perinatal infants. The results show that AN morphology demonstrates asymmetry and individual variability during the fetal period. The volume and neuronal number of AN increase exponentially with age, while neuronal density decreases exponentially. The AN may undergo neuron death and neuroblasts production after mid-gestation.
NEUROSCIENCE LETTERS
(2024)
Article
Neurosciences
Zhan Zhou, Weixin Dai, Tianxiao Liu, Min Shi, Yi Wei, Lifei Chen, Yubo Xie
Summary: Studies have shown that propofol-induced neurotoxicity is caused by disruption of mitochondrial fission and fusion, leading to an energy supply imbalance for developing neurons. Healthy mitochondria released by astrocytes can migrate to compromised neurons to mitigate propofol-induced neurotoxicity, but the exact mechanisms involved still need further clarification.
NEUROSCIENCE LETTERS
(2024)
Article
Neurosciences
An Chen, Song Hao, Yongpeng Han, Yang Fang, Yibei Miao
Summary: This study explores the efficacy of two forms of BCI attention training games and finds that physical games may be more effective than video games. The research also offers valuable insights for future game design from a neuroscience perspective.
NEUROSCIENCE LETTERS
(2024)
Article
Neurosciences
Lina Liu, Luran Liu, Yunting Lu, Tianyuan Zhang, Wenting Zhao
Summary: This study reveals that GDI1 serves as a potential diagnostic biomarker for AD and inhibition of GDI1 can attenuate Aβ-induced neurotoxicity. The findings offer new insights for the treatment of AD.
NEUROSCIENCE LETTERS
(2024)
Article
Neurosciences
Zahra Gholami, Ava Soltani Hekmat, Ali Abbasi, Kazem Javanmardi
Summary: This study investigated the effects of alamandine on allodynia in a rat model and found the presence of MrgD receptors in the vlPAG and RVM regions. Microinjection of alamandine resulted in a significant increase in paw withdrawal threshold and could be blocked by an MrgD receptor antagonist. Upregulation of MrgD receptor expression following allodynia induction suggests a potential compensatory mechanism in response to pain.
NEUROSCIENCE LETTERS
(2024)
Article
Neurosciences
Mingliang Xu, Lei Xia, Junjie Li, Yehong Du, Zhifang Dong
Summary: This study found that DHF effectively alleviates sevoflurane-induced cognitive impairment in developing mice by restoring the balance between tau O-GlcNAcylation and phosphorylation. Therefore, DHF has the potential to be a therapeutic agent for treating cognitive impairment associated with anesthetics, such as sevoflurane.
NEUROSCIENCE LETTERS
(2024)
Article
Neurosciences
Tsubasa Mitsutake, Hisato Nakazono, Takanori Taniguchi, Hisayoshi Yoshizuka, Maiko Sakamoto
Summary: The posterior parietal cortex plays a crucial role in postural stability, and transcranial electrical stimulation of this region can modulate physical control responses. This study found that cathodal stimulation significantly decreased joint angular velocity in multiple directions, while there were no significant differences with transcranial random noise stimulation.
NEUROSCIENCE LETTERS
(2024)
Article
Neurosciences
Xishuai Yang, Wei Zhang, Xueli Chang, Zuopeng Li, Runquan Du, Junhong Guo
Summary: This study aims to evaluate the efficacy of low-dose rituximab (RTX) in patients with muscle-specific kinase antibody positive myasthenia gravis (MuSK-MG). The results showed that low-dose RTX treatment led to significant improvements in clinical symptoms and quality of life for patients with MuSK-MG.
NEUROSCIENCE LETTERS
(2024)
Article
Neurosciences
Jian Zhang, Shunyuan Guo, Rong Tao, Fan Wang, Yihong Xie, Huizi Wang, Lan Ding, Yuejian Shen, Xiaoli Zhou, Junli Feng, Qing Shen
Summary: This study established an Alzheimer's disease (AD) model of zebrafish induced by AlCl3 and found that marine-derived plasmalogens (Pls) could alleviate cognitive impairments of AD zebrafish by reversing athletic impairment and altering the expression levels of genes related to oxidative stress, ferroptosis, synaptic dysfunction, and apoptosis.
NEUROSCIENCE LETTERS
(2024)
Article
Neurosciences
Lu Li, Jiaqi Ren, Qi Fang, Liqiang Yu, Jintao Wang
Summary: ICU-AW is a common and severe neuromuscular complication in critically ill patients. Electrophysiological examination is essential for accurate diagnosis and early prediction of the disease. This study aimed to establish and validate an ICU-AW predictive model in SIRS patients, providing a practical tool for early clinical prediction.
NEUROSCIENCE LETTERS
(2024)
Article
Neurosciences
Ahmad Alipour, Roghayeh Mohammadi
Summary: The present study aimed to investigate the separate and combined effects of anodal transcranial direct current stimulation (tDCS) over the primary motor cortex (M1) and left dorsolateral prefrontal cortex (F3) regions on pain relief in patients with type-2 diabetes suffering from neuropathic pain (NP). The results showed that tDCS had the potential to induce pain relief in patients with type-2 diabetes suffering from NP. The mean perceived pain intensity in the posttest was lower in the M1 stimulation group than in the F3 stimulation group. However, more trials with larger sample sizes are necessary to define clinically relevant effects.
NEUROSCIENCE LETTERS
(2024)
Article
Neurosciences
Eduardo J. Fusse, Franciele F. Scarante, Maria A. Vicente, Mariana M. Marrubia, Flavia Turcato, Davi S. Scomparin, Melissa A. Ribeiro, Maria J. Figueiredo, Tamires A. V. Brigante, Francisco S. Guimaraes, Alline C. Campos
Summary: Repeated exposure to psychosocial stress alters the endocannabinoid system and affects brain regions associated with emotional distress. Enhancing the effects of endocannabinoids through pharmacological inhibition induces an anti-stress behavioral effect, possibly mediated by the mTOR signaling pathway.
NEUROSCIENCE LETTERS
(2024)
Article
Neurosciences
Giulia Agostoni, Luca Bischetti, Federica Repaci, Margherita Bechi, Marco Spangaro, Irene Ceccato, Elena Cavallini, Luca Fiorentino, Francesca Martini, Jacopo Sapienza, Mariachiara Buonocore, Michele Francesco D'Incalci, Federica Cocchi, Carmelo Guglielmino, Roberto Cavallaro, Marta Bosia, Valentina Bambini
Summary: This study found a general impairment in humor comprehension in individuals with schizophrenia, with mental jokes being more difficult for both patients and controls. Humor comprehension was closely associated with the patients' overall pragmatic and linguistic profile, while the association with Theory of Mind (ToM) was minimal. Another notable finding was the increased appreciation of humor in individuals with schizophrenia, who rated jokes as funnier than controls did, regardless of whether they were correctly or incorrectly completed. The funniness ratings were not predicted by any measure, suggesting a dimension of humor untied to cognition or psychopathology.
NEUROSCIENCE LETTERS
(2024)
Article
Neurosciences
Xiuping Gong, Qi Li, Yang Liu
Summary: This study demonstrates that Sev targets CREBBP to inhibit ALG13 transcription, leading to hippocampal damage and cognitive impairment.
NEUROSCIENCE LETTERS
(2024)
