107,093 results match your criteria: "Department of Neurobiology; University of Massachusetts Medical School ; Worcester[Affiliation]"

Introduction: A pulmonary rehabilitation (PR) programme, including exercise training, education, and behaviour change, is highly recommended in treatment guidelines for chronic obstructive pulmonary disease (COPD). A new PR educational material for PR using an interactive three-dimensional (3D) visualisation technique was developed. There is little known regarding using 3D in this setting.

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Acetylcholine modulates the network physiology of the hippocampus, a crucial brain structure that supports cognition and memory formation in mammals . In this and adjacent regions, synchronized neuronal activity within theta-band oscillations (4-10Hz) is correlated with attentive processing that leads to successful memory encoding . Acetylcholine facilitates the hippocampus entering a theta oscillatory regime and modulates the temporal organization of activity within theta oscillations .

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Proximity based proteomics reveals Git1 as a regulator of Smoothened signaling.

bioRxiv

January 2025

Department of Molecular and Cell Biology, School of Natural Sciences, University of California Merced, Merced, California, USA.

The GPCR-like protein Smoothened (Smo) plays a pivotal role in the Hedgehog (Hh) pathway. To initiate Hh signaling, active Smo binds to and inhibits the catalytic subunit of PKA in the primary cilium, a process facilitated by G protein-coupled receptor kinase 2 (Grk2). However, the precise regulatory mechanisms underlying this process, as well as the events preceding and following Smo activation, remain poorly understood.

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Differential encoding of odor and place in mouse piriform and entorhinal cortex.

bioRxiv

January 2025

Department of Neuroscience and Carney Institute for Brain Science, Brown University, Providence, USA.

The integration of olfactory and spatial information is critical for guiding animal behavior. The lateral entorhinal cortex (LEC) is reciprocally interconnected with cortical areas for olfaction and the hippocampus and thus ideally positioned to encode odor-place associations. Here, we used mini-endoscopes to record neural activity in the mouse piriform cortex (PCx) and LEC.

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The concentrations of extracellular and intracellular signaling molecules, such as dopamine and cAMP, change over both fast and slow timescales and impact downstream pathways in a cell-type specific manner. Fluorescence sensors currently used to monitor such signals are typically optimized to detect fast, relative changes in concentration of the target molecule. They are less well suited to detect slowly-changing signals and rarely provide absolute measurements of either fast and slow signaling components.

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The DNA damage response (DDR) mechanisms that allow cells to tolerate DNA replication stress are critically important for genome stability and cell viability. Using an unbiased genetic screen we identify a role for the RING finger E3 ubiquitin ligase RNF25 in promoting DNA replication stress tolerance. In response to DNA replication stress, RNF25-deficient cells generate aberrantly high levels of single-stranded DNA (ssDNA), accumulate in S-phase and show reduced mitotic entry.

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Categorization is an essential task for sensory perception. Individuals learn category labels using a variety of strategies to ensure that sensory signals, such as sounds or images, can be assigned to proper categories. Categories are often learned on the basis of extreme examples, and the boundary between categories can differ among individuals.

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Microglia, the parenchymal macrophage of the central nervous system, serve crucial remodeling functions throughout development. Microglia are transcriptionally heterogenous, suggesting that distinct microglial states confer discrete roles. Currently, little is known about how dynamic these states are, the cues that promote them, or how they impact microglial function.

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Injurious Falls Before, During, and After Stroke Diagnosis: A Population-based Study.

J Am Med Dir Assoc

January 2025

Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden. Electronic address:

Objectives: We aimed to examine changes in the incidence of injurious falls before, during, and after stroke, and to identify risk factors of injurious falls before and after stroke diagnosis.

Design: Prospective cohort study.

Setting And Participants: Within the Swedish Twin Registry, 4431 participants (aged 66.

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Introduction: Current brain-based visual prostheses pose significant challenges impeding adoption such as the necessarily complex surgeries and occurrence of more substantial side effects due to the sensitivity of the brain. This has led to much effort toward vision restoration being focused on the more approachable part of the brain - the retina. Here we introduce a novel, parameterized simulation platform that enables study of human retinal degeneration and optimization of stimulation strategies.

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Background: The long-chain omega-3 polyunsaturated fatty acids (PUFAs) docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) have beneficial effects in depression, and these effects may be mediated via changes in functional brain connectivity. However, little is known about these effects in those with subthreshold depression.

Methods: 15 Participants aged 18-29 years with Patient Health Questionnaire-8 (PHQ-8) scores ≥ 4 and Generalised Anxiety Disorder Assessment-7 (GAD-7) scores ≥ 5, underwent resting-state functional magnetic resonance imaging.

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Gonad-derived steroid hormones mediate a sex difference in the maturation of auditory encoding in the cochlea from adolescence to early adulthood in C57BL/6J mice.

Hear Res

January 2025

Department of Neurobiology, University of Pittsburgh, Pittsburgh, PA, United States; Department of Otolaryngology, University of Pittsburgh, Pittsburgh, PA, United States; Center for the Neural Basis of Cognition, University of Pittsburgh, Pittsburgh, PA, United States. Electronic address:

Sexually mature females of multiple mammalian species were previously reported to have increased peripheral auditory sensitivity, often measured as higher auditory brainstem response (ABR) wave I amplitude compared to males. Here, we determined potential hormonal and genetic (i.e.

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Proteomic analysis of spinal dorsal horn in prior exercise protection against neuropathic pain.

Sci Rep

January 2025

Department of Neurobiology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, No. 76 Yanta West Road, Yanta District, Xi'an, 710061, China.

Neuropathic pain (NP) is a complex and prevalent chronic pain condition that affects millions of individuals worldwide. Previous studies have shown that prior exercise protects against NP caused by nerve injury. However, the underlying mechanisms of this protective effect remain to be uncovered.

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We develop a data harmonization approach for C. elegans volumetric microscopy data, consisting of a standardized format, pre-processing techniques, and human-in-the-loop machine-learning-based analysis tools. Using this approach, we unify a diverse collection of 118 whole-brain neural activity imaging datasets from five labs, storing these and accompanying tools in an online repository WormID (wormid.

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Dietary phytoestrogens recalibrate socioemotional behavior in C57Bl/6J mice in a sex- and timing-dependent manner.

Horm Behav

January 2025

Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA; Department of Psychiatry & Behavioral Neurobiology, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA. Electronic address:

Estrogens are potent regulators of socioemotional behavior across species. Ubiquitous in human and animal diets, plant-derived phytoestrogens (PE) bind estrogen receptors. While prior work has examined the impact of PE exposure on socioemotional behavior, findings are inconsistent across studies.

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Another stroke in the wall: a case of ischemic wall-eyed bilateral internuclear ophthalmoplegia (WEBINO).

Neurol Sci

January 2025

Department of Medicine and Surgery, Unit of Neurology, Neurophysiology, Neurobiology and Psychiatry, Università Campus Bio-Medico di Roma, Via Alvaro del Portillo, 21 - 00128, Roma, Italy.

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Using Zebrafish Models to Study Epitranscriptomic Regulation of CNS Functions.

J Neurochem

January 2025

Suzhou Municipal Key Laboratory of Neurobiology and Cell Signaling, School of Science, Xi'an Jiaotong-Liverpool University, Suzhou, China.

Epitranscriptomic regulation of cell functions involves multiple post-transcriptional chemical modifications of coding and non-coding RNA that are increasingly recognized in studying human brain disorders. Although rodent models are presently widely used in neuroepitranscriptomic research, the zebrafish (Danio rerio) has emerged as a useful and promising alternative model species. Mounting evidence supports the importance of RNA modifications in zebrafish CNS function, providing additional insights into epitranscriptomic mechanisms underlying a wide range of brain disorders.

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Snails belonging to the genus Biomphalaria serve as obligatory intermediate hosts for the trematode Schistosoma mansoni, the causative agent for the most widespread form of schistosomiasis. The simpler nervous systems of gastropod molluscs, such as Biomphalaria, provide advantageous models for investigating neural responses to infection at the cellular and network levels. The present study examined neuropeptides related to cholecystokinin (CCK), a major multifunctional regulator of central nervous system (CNS) function in mammals.

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How the brain produces generalized fear.

Clin Transl Med

January 2025

Neurobiology Department and Kavli Institute for Brain and Mind, University of California San Diego, La Jolla, California, USA.

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Changes in DNA methylation and subsequent alterations in gene expression have opened a new direction in research related to the pathogenesis of peripheral neuropathic pain (PNP). This study aimed to reveal epigenetic perturbations underlying DNA methylation in the dorsal root ganglion (DRG) of rats with peripheral nerve injury in response to prior exercise and identify potential target genes involved. Male Sprague-Dawley rats were divided into three groups, namely, chronic constriction injury (CCI) of the sciatic nerve, CCI with prior 6-week swimming training (CCI_Ex), and sham operated (Sham).

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Increasing evidence supports the presence of oxytocin deficiency (OXT-D) in patients with hypopituitarism and hypothalamic damage (HHD), that might be associated with neuropsychological deficits and sexual dysfunction, leading to worse quality of life (QoL). Therefore, identifying a provocative test to diagnose an OXT-D will be important. Corticotropin-releasing hormone (CRH) is a candidate for such a test as it increases oxytocin secretion in animal models.

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NKAPL facilitates transcription pause-release and bridges elongation to initiation during meiosis exit.

Nat Commun

January 2025

State Key Laboratory of Reproductive Medicine and Offspring Health, Nanjing Medical University, Nanjing, China.

Transcription elongation, especially RNA polymerase II (Pol II) pause-release, is less studied than transcription initiation in regulating gene expression during meiosis. It is also unclear how transcription elongation interplays with transcription initiation. Here, we show that depletion of NKAPL, a testis-specific protein distantly related to RNA splicing factors, causes male infertility in mice by blocking the meiotic exit and downregulating haploid genes.

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Norepinephrine promotes activated B cells to identify and kill effector CD8 T cells through FasL/Fas pathway in spleen mononuclear cells isolated from experimental autoimmune encephalomyelitis.

Brain Behav Immun

January 2025

Department of Neurobiology, School of Basic Medical Sciences, Harbin Medical University, Harbin 150081, Heilongjiang, PR China; The Key Laboratory of Myocardial Ischemia, Harbin Medical University, Ministry of Education, Harbin 150081, Heilongjiang, PR China. Electronic address:

It has been reported that the nervous system can regulate immune reactions through various mechanisms. However, the role of splenic sympathetic nerve activity in the autoimmune reactions during the pathogenesis of experimental autoimmune encephalomyelitis (EAE) remained unclear. Here, we blocked the activity of the splenic sympathetic nerve and found that the number of adaptive immune cells, such as CD4 T cells, CD8 T cells and B cells, were upregulated.

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Immune-cell signatures of persistent inflammation, immunosuppression, and catabolism syndrome after sepsis.

Med

January 2025

Department of Anesthesiology, Zhongshan Hospital Fudan University, Shanghai 200032, China; Laboratory of Perioperative Stress and Protection, Shanghai 200032, China. Electronic address:

Background: Management of persistent inflammation, immunosuppression, and catabolism syndrome (PICS) after sepsis remains challenging for patients in the intensive care unit, experiencing poor quality of life and death. However, immune-cell signatures in patients with PICS after sepsis remain unclear.

Methods: We determined immune-cell signatures of PICS after sepsis at single-cell resolution.

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Phosphodiesterase 4D inhibition improves the functional and molecular outcome in a mouse and human model of Charcot Marie Tooth disease 1 A.

Biomed Pharmacother

January 2025

Laboratory for Functional Imaging & Research on Stem Cells, BIOMED, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium. Electronic address:

Charcot-Marie-Tooth disease type 1A (CMT1A) is an inherited peripheral neuropathy caused by a duplication of the peripheral myelin protein 22 (PMP22) gene. It is primarily marked by Schwann cell dedifferentiation and demyelination, leading to motor and sensory deficits. Cyclic adenosine monophosphate (cAMP) is crucial for Schwann cell differentiation and maturation.

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