[Dental Magnetic Resonance Imaging: Practical insights and evaluation of benefits and drawbacks in dentistry and oral and maxillofacial surgery].

Dental magnetic resonance imaging (MRI) has long been perceived as overly complex, costly, and limited in availability. Despite the numerous advantages of this radiation-free, non-invasive procedure for soft tissue diagnostics in the head and neck region, its imaging capabilities for hard tissue, such as bones and teeth, have thus far remained limited in comparison to conventional X-ray technology. In recent years, however, technological advances have led to a notable enhancement in the image quality and the range of applications of dental MRI.

Activation of Bradykinin B Receptors in Astrocytes Stimulates the Release of Leukemia Inhibitory Factor for Autocrine and Paracrine Signaling.

Communications between different cell types within a tissue are often critical for the proper functioning of an organ. In the central nervous system, interactions among neurons and glial cells are known to modulate neurotransmission, energy metabolism, extracellular ion homeostasis, and neuroprotection. Here we showed that bradykinin, a proinflammatory neuropeptide, can be detected by astrocytes, resulting in the secretion of cytokines that act on neurons.

LRRK2 G2019S Mutated iPSC-Derived Endothelial Cells Exhibit Increased α-Synuclein, Mitochondrial Impairment, and Altered Inflammatory Responses.

The blood-brain barrier (BBB) serves as an interface between the bloodstream and the central nervous system. It limits the movement of molecules and immune cells, regulates the entry of nutrients, and removes waste products from the brain. The dysfunction of the BBB has been identified in Parkinson's disease (PD) but the role of the BBB and endothelial cells (ECs) has not been well studied.

Smartphone-Based Pupillometry Using Machine Learning for the Diagnosis of Sports-Related Concussion.

Quantitative pupillometry has been proposed as an objective means to diagnose acute sports-related concussion (SRC). To assess the diagnostic accuracy of a smartphone-based quantitative pupillometer in the acute diagnosis of SRC. Division I college football players had baseline pupillometry including pupillary light reflex (PLR) parameters of maximum resting diameter, minimum diameter after light stimulus, percent change in pupil diameter, latency of pupil constriction onset, mean constriction velocity, maximum constriction velocity, and mean dilation velocity using a smartphone-based app.

Schwann Cell-Specific Ablation of Beclin 1 Impairs Myelination and Leads to Motor and Sensory Neuropathy in Mice.

The core component of the class III phosphatidylinositol 3-kinase complex, Beclin 1, takes part in different protein networks, thus switching its role from inducing autophagy to regulating autophagosomal maturation and endosomal trafficking. While assessed in neurons, astrocytes, and microglia, its role is far less investigated in myelinating glia, including Schwann cells (SCs), responsible for peripheral nerve myelination. Remarkably, the dysregulation in endosomal trafficking is emerging as a pathophysiological mechanism underlying peripheral neuropathies, such as demyelinating Charcot-Marie-Tooth (CMT) diseases.

E-box independent chromatin recruitment turns MYOD into a transcriptional repressor.

MYOD is an E-box sequence-specific basic Helix-Loop-Helix (bHLH) transcriptional activator that, when expressed in non-muscle cells, induces nuclear reprogramming toward skeletal myogenesis by promoting chromatin accessibility at previously silent loci. Here, we report on the identification of a previously unrecognized property of MYOD as repressor of gene expression, via E-box-independent chromatin binding within accessible genomic elements, which invariably leads to reduced chromatin accessibility. MYOD-mediated repression requires the integrity of functional domains previously implicated in MYOD-mediated activation of gene expression.

Mesoscale functional architecture in medial posterior parietal cortex.

The posterior parietal cortex () in mice has various functions including multisensory integration, vision-guided behaviors, working memory, and posture control. However, an integrated understanding of these functions and their cortical localizations in and around the PPC and higher visual areas (), has not been completely elucidated. Here we simultaneously imaged the activity of thousands of neurons within a 3 × 3 mm field-of-view, including eight cortical areas around the PPC, during behavior with a two-photon mesoscope.

A Neuronal Signal Sorting and Amplifying Nanosensor for EEG-Concordant Imaging-Guided Precision Epilepsy Ablation.

Surgery remains an essential treatment for managing drug-resistant focal epilepsy, but its accessibility and efficacy are limited in patients without distinct structural abnormalities on magnetic resonance imaging (MRI). Potassium ion (K), a critical marker for seizure-associated neuronal signaling, shows significant promise for designing sensors targeting hidden epileptic foci. However, existing sensors cannot cross the blood-brain barrier and lack the ability to specifically enrich and amplify K signals in the brain with high temporal and spatial resolution.

The characterization of new de novo CACNA1G variants affecting the intracellular gate of Cav3.1 channel broadens the spectrum of neurodevelopmental phenotypes in SCA42ND.

Purpose: Missense de novo variants in CACNA1G, which encodes the Cav3.1 T-type calcium channel, have been associated with a severe, early-onset form of cerebellar disorder with neurodevelopmental deficits (SCA42ND). We explored a large series of pediatric cases carrying heterozygous variants in CACNA1G to further characterize genotype-phenotype correlations in SCA42ND.

Neuro-toxicities of chemo- and immune-therapies in haematologic malignancies: from mechanism to management.

Chemo- and immune therapies administered to treat haematologic malignancies frequently cause neurologic injury. The adverse events range from mild cognitive impairment and headaches to severe conditions such as seizures, stroke and encephalitis. We performed a comprehensive literature review and report the types, mechanisms, management and prevention of neuro-toxicity resulting from these therapies in subjects who develop these toxic effects.

The Inferior Cerebellar Peduncle Sign: A Novel Imaging Marker for Differentiating Multiple System Atrophy Cerebellar Type from Spinocerebellar Ataxia.

Background And Purpose: The hot cross bun (HCB) sign is a hallmark feature of multiple system atrophy with predominant cerebellar ataxia (MSA-C), typically observed in advanced stages of the disease; however, it can also present in other conditions such as spinocerebellar ataxia (SCA), making the differentiation challenging. The middle cerebellar peduncle (MCP) sign may be observed in various medical conditions and in healthy individuals. We hypothesized that the inferior cerebellar peduncle (ICP), known to be affected in MSA-C, may exhibit hyperintensity on fluid-attenuated inversion recovery (FLAIR) imaging, potentially aiding in differentiating MSA-C from SCA.

Smartphone pupillometry with machine learning differentiates ischemic from hemorrhagic stroke: A pilot study.

Objectives: Similarities between acute ischemic and hemorrhagic stroke make diagnosis and triage challenging. We studied a smartphone-based quantitative pupillometer for differentiation of acute ischemic and hemorrhagic stroke.

Materials And Methods: Stroke patients were recruited prior to surgical or interventional treatment.

Intermittent Vibration Induces Sleep via an Allatostatin A-GABA Signaling Pathway and Provides Broad Benefits in Alzheimer's Disease Models.

While animals across species typically experience suppressed consciousness and an increased arousal threshold during sleep, the responsiveness to specific sensory inputs persists. Previous studies have demonstrated that rhythmic and continuous vibration can enhance sleep in both animals and humans. However, the neural circuits underlying vibration-induced sleep (VIS) and its potential therapeutic benefits on neuropathological processes in disease models remain unclear.

TargetSA: adaptive simulated annealing for target-specific drug design.

Motivation: The burgeoning field of target-specific drug design has attracted considerable attention, focusing on identifying compounds with high binding affinity toward specific target pockets. Nevertheless, existing target-specific deep generative models encounter notable challenges. Some models heavily rely on elaborate datasets and complicated training methodologies, while others neglect the multi-constraint optimization problem inherent in drug design, resulting in generated molecules with irrational structures or chemical properties.

Olfactory dysfunction in schizophrenia and other psychotic disorders: A comprehensive and updated meta-analysis.

Olfaction plays a key role in our daily life, influencing food enjoyment, threat detection, mood and social relationships. Numerous studies have provided evidence of abnormal olfactory function in schizophrenia and other psychotic disorders. This pre-registered meta-analysis was conducted to (a) provide an updated overview of olfactory function in schizophrenia-spectrum disorders, and (b) examine the modulatory effects of demographic and clinical variables on distinct olfactory abilities.

No evidence for an association of testosterone and cortisol hair concentrations with social decision-making in a large cohort of young adults.

Prior research has established that testosterone is an important modulator of social decision-making. However, evidence on the relationship between basal testosterone levels, commonly measured in saliva or blood, and social behavior has been inconsistent due to methodological shortcomings. Additionally, it has been suggested that cortisol might moderate the association between basal testosterone and social behavior.

Patient flow analysis with fast-track MRI for suspected stroke in the emergency department and associated non-comprehensive stroke center.

Background: Good outcomes in stroke care require swift diagnostics, for which magnetic resonance imaging (MRI) as first-line brain imaging is superior to computed tomography scans. Reduced length of stay (LOS) in hospital and emergency departments (ED) may optimize resource use. Fast-track stroke MRI was implemented as the primary imaging technique for suspected stroke, in the ED at Copenhagen University Hospital-Herlev and Gentofte in 2020.

Protocol for identifying sound-activated neurons in the inferior colliculus by cFos immunostaining.

cfos is an immediate early gene commonly used to identify neuronal activation. After loud sound stimulation, neurons in the inferior colliculus are activated and cFos is expressed in the nucleus. Here, we present a protocol for quantifying neuronal activity in response to auditory stimulation using cFos immunostaining in the mouse inferior colliculus.

Hippocampal damage through foreign body placement in organotypic cultures leads to plastic responses in newly born granule cells.

The dentate gyrus of the hippocampus is a plastic structure that displays modifications at different levels in response to positive stimuli as well as to negative conditions such as brain damage. The latter involves global alterations, making understanding plastic responses triggered by local damage difficult. One key feature of the dentate gyrus is that it contains a well-defined neurogenic niche, the subgranular zone, and beyond neurogenesis, newly born granule cells may maintain a "young" phenotype throughout life, adding to the plastic nature of the structure.

MicroRNA-495 Modulates Neuronal Layer Fate Determination by Targeting .

During cortical development, the differentiation potential of neural progenitor cells (NPCs) is one of the most critical steps in normal cortical formation and function. Defects in this process can lead to many brain disorders. MicroRNA dysregulation in the dorsolateral prefrontal cortex is associated with risk for a variety of developmental and psychiatric conditions.

Diagnostic Accuracy of Screening Tests for Diabetic Peripheral Neuropathy: An Umbrella Review.

Peripheral neuropathy is a common cause of morbidity in diabetes. Despite recent advancements in early diagnosis methods, there is a need for practical, highly sensitive, and cost-effective screening methods in clinical practice. This study summarizes evidence from systematic reviews and meta-analyses on the diagnostic accuracy of validated screening methods for diabetic peripheral neuropathy.