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Beyond Anticoagulation: Understanding the Failure of Medical Therapy in PFO-Related Stroke and the Superiority of Closure
Riwaj Bhagat
Patent foramen ovale (PFO) is present in roughly one quarter of adults and is over-represented among younger patients with cryptogenic ischemic stroke. The past decade has produced compelling evidence from randomized trials showing that PFO closure is superior to medical therapy in preventing recurrent ischemic stroke in appropriately selected patients. Despite this, anticoagulation continues to be used when closure is not feasible, declined, contraindicated, or considered after recurrent events. The observation that some patients experience “breakthrough” stroke or transient ischemic attack (TIA) despite therapeutic anticoagulation raises a critical question: why does medical therapy fail in PFO-related stroke, and why does closure appear superior? This narrative review synthesizes the latest evidence on the pathophysiology of PFO-associated stroke, with attention to mechanisms that remain incompletely addressed by anticoagulation. It analyzes randomized trial data comparing antiplatelet therapy, anticoagulation, and transcatheter closure. It examines the role of high-risk PFO anatomical characteristics, the Risk of Paradoxical Embolism (RoPE) score, and the PFO-Associated Stroke Causal Likelihood (PASCAL) classification in understanding medical therapy failure. Additionally, the review explores whether PFO “type” predicts anticoagulation failure and highlights future research directions needed to further optimize therapy. The conclusion is clear: in the selected patients with high-risk features closure offers superior stroke prevention beyond what anticoagulation can achieve.
Patent foramen ovale (PFO) is present in roughly one quarter of adults and is over-represented among younger patients with cryptogenic ischemic stroke. The past decade has produced compelling evidence from randomized trials showing that PFO closure is superior to medical therapy in preventing recurrent ischemic stroke in appropriately selected patients. Despite this, anticoagulation continues to be used when closure is not feasible, declined, contraindicated, or considered after recurrent events. The observation that some patients experience “breakthrough” stroke or transient ischemic attack (TIA) despite therapeutic anticoagulation raises a critical question: why does medical therapy fail in PFO-related stroke, and why does closure appear superior? This narrative review synthesizes the latest evidence on the pathophysiology of PFO-associated stroke, with attention to mechanisms that remain incompletely addressed by anticoagulation. It analyzes randomized trial data comparing antiplatelet therapy, anticoagulation, and transcatheter closure. It examines the role of high-risk PFO anatomical characteristics, the Risk of Paradoxical Embolism (RoPE) score, and the PFO-Associated Stroke Causal Likelihood (PASCAL) classification in understanding medical therapy failure. Additionally, the review explores whether PFO “type” predicts anticoagulation failure and highlights future research directions needed to further optimize therapy. The conclusion is clear: in the selected patients with high-risk features closure offers superior stroke prevention beyond what anticoagulation can achieve.
Posted: 04 December 2025
Serum Metabolomic Profiling Across Five Oligoclonal Band (OCB) Patterns: A Targeted ¹H-NMR Study in Serum
Pınar Şengül
,Ahmet Tarik Baykal
,Mustafa Serteser
Cerebrospinal fluid (CSF) oligoclonal band (OCB) analysis is central to the diagnostic evaluation of neuroinflammatory diseases of the central nervous system (CNS), yet its reliance on lumbar puncture limits utility in screening and longitudinal monitoring. Serum metabolomics provides a minimally invasive approach to capture peripheral correlates of intrathecal immune activity. This study extends our previous two-group comparison by incorporating all five classical OCB patterns to delineate serum metabolic gradients associated with varying degrees of intrathecal immunoglobulin synthesis. A total of 92 adults undergoing diagnostic evaluation for suspected CNS inflammatory disorders were stratified by OCB Type (1–5). Serum samples were analysed using targeted ¹H-NMR spectroscopy on a Bruker Avance Neo 600 MHz platform and processed with Bruker’s IVDr pipeline. Statistical analyses included Kruskal–Wallis testing with FDR correction, PCA, PLS-DA with VIP scoring, and ROC-AUC modelling. Six metabolites exhibited significant or near-significant differences, led by Leucine (p = 0.0047, q = 0.073) and 2-Oxoglutaric acid (p = 0.0022, q = 0.069). PLS-DA identified five key discriminators with VIP > 1.5: Leucine, 2-Oxoglutaric acid, Histidine, Valine, and Glycine. A combined logistic model (Leucine + Histidine + Citric acid) achieved an AUC of 0.83 for distinguishing OCB Type 1 from Type 2. This first targeted serum ¹H-NMR metabolomic evaluation across all OCB patterns reveals a graded biochemical trajectory reflective of intrathecal immune activation. Amino-acid and TCA-cycle intermediates emerge as promising minimally invasive candidates for neuroinflammatory stratification and precision evaluation beyond traditional MS paradigms.
Cerebrospinal fluid (CSF) oligoclonal band (OCB) analysis is central to the diagnostic evaluation of neuroinflammatory diseases of the central nervous system (CNS), yet its reliance on lumbar puncture limits utility in screening and longitudinal monitoring. Serum metabolomics provides a minimally invasive approach to capture peripheral correlates of intrathecal immune activity. This study extends our previous two-group comparison by incorporating all five classical OCB patterns to delineate serum metabolic gradients associated with varying degrees of intrathecal immunoglobulin synthesis. A total of 92 adults undergoing diagnostic evaluation for suspected CNS inflammatory disorders were stratified by OCB Type (1–5). Serum samples were analysed using targeted ¹H-NMR spectroscopy on a Bruker Avance Neo 600 MHz platform and processed with Bruker’s IVDr pipeline. Statistical analyses included Kruskal–Wallis testing with FDR correction, PCA, PLS-DA with VIP scoring, and ROC-AUC modelling. Six metabolites exhibited significant or near-significant differences, led by Leucine (p = 0.0047, q = 0.073) and 2-Oxoglutaric acid (p = 0.0022, q = 0.069). PLS-DA identified five key discriminators with VIP > 1.5: Leucine, 2-Oxoglutaric acid, Histidine, Valine, and Glycine. A combined logistic model (Leucine + Histidine + Citric acid) achieved an AUC of 0.83 for distinguishing OCB Type 1 from Type 2. This first targeted serum ¹H-NMR metabolomic evaluation across all OCB patterns reveals a graded biochemical trajectory reflective of intrathecal immune activation. Amino-acid and TCA-cycle intermediates emerge as promising minimally invasive candidates for neuroinflammatory stratification and precision evaluation beyond traditional MS paradigms.
Posted: 04 December 2025
From Monoamines to Systems Psychiatry: Rewiring Depression Science and Care (1960s–2025)
Masaru Tanaka
Posted: 03 December 2025
Neuroinflammatory Cascades Following Focal Cortical Injury Mirror the Progression of Motor Deficits in Rats
Karen Kalhøj Rich
,Simone Hjæresen
,Marlene Storm Andersen
,Louise Bjørnager Hansen
,Ali Salh Mohammad
,Nilukshi Gopinathan
,Tobias Christian Mogensen
,Åsa Fex Svenningsen
,Mengliang Zhang
Posted: 02 December 2025
Aligning Minds in Spasticity: A Two-Phase Delphi-Dialogue Study Between Patients and Professionals in Spain
Helena Bascuñana-Ambrós
,Jacobo Formigo-Couceiro
,José Maria Climent-Barberá
,Lluis Guirao
,Michelle Catta-Preta
,Alex Trejo-Omeñaca
,Josep Maria Monguet-Fierro
Posted: 28 November 2025
More Studies of the Deranged Myelinotrophic Factors in Multiple Sclerosis Central Nervous System Are Needed to Clarify Their Pathogenic Meaning
Giuseppe Scalabrino
Posted: 27 November 2025
Electromagnetic Valves for Cerebrospinal Fluid Bypass: Corrosion Evaluation of Magnets Embedded in Epoxy Resins
Lucien Reclaru
,Gabriel Buciu
,Raluca Ionela Gheorghe
,Ioan Dogariu
Posted: 27 November 2025
Comprehensive Multimodal and Multiscale Analysis of Alzheimer’s Disease in 5xFAD Mice: Optical Spectroscopies, TEM, Neuropathological, and Behavioral Investigations
Dhruvil Solanki
,Ishmael Apachigawo
,Sazzad Khan
,Santanu Maity
,Fatemah Alharthi
,Samia Nasim
,Mohammad Alizadeh Poshtiri
,Fnu Sweety
,Jiangfeng Xiao
,Mohammad Moshahid Khan
+1 authors
Posted: 27 November 2025
Rehabilitation of Post-Traumatic Epilepsy Through Neurofeedback and Motor Therapy: A 6-Month Follow-Up Case Study
Annamaria Leone
,Luna Digioia
,Rosita Paulangelo
,Nicole Brugnera
,Luciana Lorenzon
,Fabiana Montenegro
,Pietro Fiore
,Petronilla Battista
,Stefania De Trane
,Gianvito Lagravinese
Posted: 26 November 2025
Taste of Things to Come: Craving Responses to Ingestion and Mouth Rinse of Sugary Drink in Connection with Food Cues and Associations with Continuous Interstitial Glucose Measurement in a Healthy Population
Taste of Things to Come: Craving Responses to Ingestion and Mouth Rinse of Sugary Drink in Connection with Food Cues and Associations with Continuous Interstitial Glucose Measurement in a Healthy Population
Abdelbare Al Gamode
,Rohi Malik
,Joe Butler
,Hans-Peter Kubis
Background/objectives: Food craving is frequent with high palatable foods containing high levels of sugars and/or fat. Food cues can strongly induce food craving, and heightened food cue reactivity is associated with eating disorders and obesity. Sweet taste signalling is suggested to be an important regulator for appetite and food intake, with sensory-metabolic mismatch potentially relevant for food craving experience. This study investigated the interaction between taste and food cues on food craving in healthy people with and without ingestion of a sugary drink. Methods: Randomised crossover design with 47 healthy individuals performed two experimental trials. Fasted individuals were exposed to food cues with measurement of food craving pre- and post- exposure via a newly validated method using handgrip force as a response modality. This was followed either by ingestion (ingestion trial) or mouth rinse (mouth rinse trial) of a sugary drink and reassessment of food cue craving responses. Continuous interstitial glucose monitoring was performed using a glucose sensor inserted into the upper arm and a blood sample for leptin levels was taken. Results: Strong food craving response to food cues was bound to the fasted state, while ingestion of sugary drink blunted food cue reactivity and reduced craving levels. Mouth rinse induced a stable increase in food craving which showed maximum after food cues. Interstitial glucose levels over the after-trial periods (area under curve, AUC) were significantly higher for the rinse trial day than for the ingestion trial day suggesting higher carbohydrate/sugar intake after the rinse trial, while craving levels were associated with AUC in the rinse trial. Conclusions: Outcomes indicate that taste/flavour in connection with food cues may generate an error signal experienced as food cravings, whereas receipt of sugars, with concomitant physiological responses, reduce the signal and diminish food craving. Results highlight the importance of sensory-metabolic mismatch for food craving experience.
Background/objectives: Food craving is frequent with high palatable foods containing high levels of sugars and/or fat. Food cues can strongly induce food craving, and heightened food cue reactivity is associated with eating disorders and obesity. Sweet taste signalling is suggested to be an important regulator for appetite and food intake, with sensory-metabolic mismatch potentially relevant for food craving experience. This study investigated the interaction between taste and food cues on food craving in healthy people with and without ingestion of a sugary drink. Methods: Randomised crossover design with 47 healthy individuals performed two experimental trials. Fasted individuals were exposed to food cues with measurement of food craving pre- and post- exposure via a newly validated method using handgrip force as a response modality. This was followed either by ingestion (ingestion trial) or mouth rinse (mouth rinse trial) of a sugary drink and reassessment of food cue craving responses. Continuous interstitial glucose monitoring was performed using a glucose sensor inserted into the upper arm and a blood sample for leptin levels was taken. Results: Strong food craving response to food cues was bound to the fasted state, while ingestion of sugary drink blunted food cue reactivity and reduced craving levels. Mouth rinse induced a stable increase in food craving which showed maximum after food cues. Interstitial glucose levels over the after-trial periods (area under curve, AUC) were significantly higher for the rinse trial day than for the ingestion trial day suggesting higher carbohydrate/sugar intake after the rinse trial, while craving levels were associated with AUC in the rinse trial. Conclusions: Outcomes indicate that taste/flavour in connection with food cues may generate an error signal experienced as food cravings, whereas receipt of sugars, with concomitant physiological responses, reduce the signal and diminish food craving. Results highlight the importance of sensory-metabolic mismatch for food craving experience.
Posted: 25 November 2025
Development and Optimization of Nanostructured Lipid Carriers of Nilotinib for Treatment of Cancer via Oral Route
Ananda Kumar Chettupalli
,M Yasmin Begum
,Sandeep Bolla
,Khalid Orayj
,Asif Ansari Shaik Mohammad
,Mohammad Khalid
,Narender Boggula
,Chandan Mondal
Posted: 25 November 2025
Exposure-Based Intervention in Virtual Reality to Address Kinesiophobia in Parkinson’s Disease: A Narrative Review
Alice Jeanningros
,Stéphane Bouchard
,Alexandra Potvin-Desrochers
Background/Objectives: physical activity alleviates symptoms and may slow Parkinson’s disease (PD) progression, yet many individuals with PD remain sedentary. Kinesiophobia, the fear of movement, may represent a significant but underexplored psychological barrier to physical activity in this population. Virtual reality (VR), already effective in phobias, may represent a promising approach to address this challenge. This review initially aimed to systematically examine Exposure-based interventions in VR (E-IVR) directly targeting kinesiophobia in PD. Methods: database searches using keywords such as “kinesiophobia,” “fear of movement,” and “virtual reality” combined with “Parkinson’s disease” yielded no eligible studies. Consequently, the scope was broadened to include populations with neurological or musculoskeletal conditions, and a narrative review format was adopted to synthesize the available evidence. Furthermore, relevant studies of interventions in VR applied in PD, although not specifically addressing kinesiophobia, are detailed to provide evidence of efficacy and feasibility of VR interventions in PD. Finally, directions are offered to support the creation of Exposure-based interventions in VR targeting kinesiophobia in individuals with PD. Results: meta-analyses in neurological and musculoskeletal populations demonstrate moderate to large reductions in kinesiophobia following VR interventions, although effects vary depending on assessment tools, degree of immersion, and exposure design. In PD, VR has been applied to rehabilitation, anxiety reduction, and quality of life enhancement. These interventions achieved high adherence (≥90%), were well tolerated, and reported no major adverse events. Conclusions: kinesiophobia is prevalent in PD and could contribute to physical inactivity. E-IVR appears feasible, safe, and innovative for addressing kinesiophobia in people living with PD.
Background/Objectives: physical activity alleviates symptoms and may slow Parkinson’s disease (PD) progression, yet many individuals with PD remain sedentary. Kinesiophobia, the fear of movement, may represent a significant but underexplored psychological barrier to physical activity in this population. Virtual reality (VR), already effective in phobias, may represent a promising approach to address this challenge. This review initially aimed to systematically examine Exposure-based interventions in VR (E-IVR) directly targeting kinesiophobia in PD. Methods: database searches using keywords such as “kinesiophobia,” “fear of movement,” and “virtual reality” combined with “Parkinson’s disease” yielded no eligible studies. Consequently, the scope was broadened to include populations with neurological or musculoskeletal conditions, and a narrative review format was adopted to synthesize the available evidence. Furthermore, relevant studies of interventions in VR applied in PD, although not specifically addressing kinesiophobia, are detailed to provide evidence of efficacy and feasibility of VR interventions in PD. Finally, directions are offered to support the creation of Exposure-based interventions in VR targeting kinesiophobia in individuals with PD. Results: meta-analyses in neurological and musculoskeletal populations demonstrate moderate to large reductions in kinesiophobia following VR interventions, although effects vary depending on assessment tools, degree of immersion, and exposure design. In PD, VR has been applied to rehabilitation, anxiety reduction, and quality of life enhancement. These interventions achieved high adherence (≥90%), were well tolerated, and reported no major adverse events. Conclusions: kinesiophobia is prevalent in PD and could contribute to physical inactivity. E-IVR appears feasible, safe, and innovative for addressing kinesiophobia in people living with PD.
Posted: 24 November 2025
Misdiagnosis of Surgical Conditions in ALS Patients: Analysis of a Single‐Center Experience and Review of Literature
Miguel Martins
,Marta Gromicho
,Miguel Oliveira Santos
,Mamede de Carvalho
Posted: 21 November 2025
The Therapeutic Loop: Closed-Loop Epilepsy Systems Mirroring the Read-Write Architecture of Brain-Computer Interfaces
Justo Montoya-Gálvez
,Karla Ivankovic
,Rodrigo Rocamora
,Alessandro Principe
Posted: 21 November 2025
Sulfonic DJ-1 (Cys106-SO3H) Binds to and Colocalizes with the Intracellular Accumulation of Amyloid-Beta 42 (Aβ42) in Familial Alzheimer’s Disease PSEN1 E280A Cerebral Organoids Derived from Induced Pluripotent Stem Cells
Viviana Soto-Mercado
,Miguel Mendivil-Perez
,Carlos Velez-Pardo
,Marlene Jimenez-Del-Rio
The intracellular accumulation of amyloid beta 42 (iAβ42) has been proposed as an early pathological indicator of familial Alzheimer’s disease (FAD). DJ-1 is a multifunctional protein sensitive to oxidative stress (OS) that has been associated with neurodegeneration; however, its role in iAβ42 pathology is unclear. In this study, we examined whether oxidized (sulfonic) DJ-1 (Cys106-SO₃) drives iAβ42 accumulation using postmortem brain samples and in vitro 3D (iPSC-derived cerebral organoids, COs) or 2D induced pluripotent stem cells (iPSC)-derived ChLNs (cholinergic-like neurons) models from a PSEN1 E280A patient and a healthy volunteer (as a control sample). Post-mortem analyses of the temporal and frontal cortices and hippocampus from FAD PSEN1 E280A patients revealed strong intracellular co-localization of sulfonic DJ-1 and iAβ42, which was absent in control samples. To validate these findings, we generated cerebral organoids (COs) from an iPSCs PSEN1 E280A FAD patient and a healthy donor. In these organoids, we observed the co-localization of oxidized DJ-1 and Aβ42 in the absence of extracellular fibrils or plaques, as confirmed by BTA-1 staining. To further support these observations, 2D iPSC PSEN1 E280A-derived ChLNs cultures showed that intracellular Aβ42 accumulates progressively in direct correlation with increasing DJ-1 oxidation, as demonstrated by immunofluorescence microscopy and Western blotting analysis. These results indicate that DJ-1 oxidation accompanies the earliest intracellular stages of Aβ42 pathology. Furthermore, complementary in silico molecular docking analysis revealed a higher affinity between Aβ42 and oxidized sulfonic DJ-1 (DJ-1 1Cys106-SO₃) compared to sulfenic (DJ-1 Cys106-SOH) or sulfinic acid (DJ-1 Cys106-SO2H) forms. Likewise, ELISA tests and seeding assays confirmed that oxidized DJ-1 binds to and decelerates Aβ42 aggregation kinetics. Together, our results identify DJ-1 oxidation as a critical molecular event in the accumulation of iAβ42 in FAD. These findings suggest that oxidized DJ-1 represents not only a potential early biomarker of intracellular pathology but also a pharmacological target. Preventing the oxidation of DJ-1 or its pathological aggregation could provide new biomarkers and therapeutic strategies for reducing the intracellular accumulation of Aβ42 and neurodegeneration in FAD.
The intracellular accumulation of amyloid beta 42 (iAβ42) has been proposed as an early pathological indicator of familial Alzheimer’s disease (FAD). DJ-1 is a multifunctional protein sensitive to oxidative stress (OS) that has been associated with neurodegeneration; however, its role in iAβ42 pathology is unclear. In this study, we examined whether oxidized (sulfonic) DJ-1 (Cys106-SO₃) drives iAβ42 accumulation using postmortem brain samples and in vitro 3D (iPSC-derived cerebral organoids, COs) or 2D induced pluripotent stem cells (iPSC)-derived ChLNs (cholinergic-like neurons) models from a PSEN1 E280A patient and a healthy volunteer (as a control sample). Post-mortem analyses of the temporal and frontal cortices and hippocampus from FAD PSEN1 E280A patients revealed strong intracellular co-localization of sulfonic DJ-1 and iAβ42, which was absent in control samples. To validate these findings, we generated cerebral organoids (COs) from an iPSCs PSEN1 E280A FAD patient and a healthy donor. In these organoids, we observed the co-localization of oxidized DJ-1 and Aβ42 in the absence of extracellular fibrils or plaques, as confirmed by BTA-1 staining. To further support these observations, 2D iPSC PSEN1 E280A-derived ChLNs cultures showed that intracellular Aβ42 accumulates progressively in direct correlation with increasing DJ-1 oxidation, as demonstrated by immunofluorescence microscopy and Western blotting analysis. These results indicate that DJ-1 oxidation accompanies the earliest intracellular stages of Aβ42 pathology. Furthermore, complementary in silico molecular docking analysis revealed a higher affinity between Aβ42 and oxidized sulfonic DJ-1 (DJ-1 1Cys106-SO₃) compared to sulfenic (DJ-1 Cys106-SOH) or sulfinic acid (DJ-1 Cys106-SO2H) forms. Likewise, ELISA tests and seeding assays confirmed that oxidized DJ-1 binds to and decelerates Aβ42 aggregation kinetics. Together, our results identify DJ-1 oxidation as a critical molecular event in the accumulation of iAβ42 in FAD. These findings suggest that oxidized DJ-1 represents not only a potential early biomarker of intracellular pathology but also a pharmacological target. Preventing the oxidation of DJ-1 or its pathological aggregation could provide new biomarkers and therapeutic strategies for reducing the intracellular accumulation of Aβ42 and neurodegeneration in FAD.
Posted: 21 November 2025
Reaches of Unilateral Biportal Endoscopy, Spinal Thoracolumbar Extramedullary Tumors Resection: Case Series, Surgical Note, and Outcomes
Adrian Sánchez Gomez
,Carlos Castillo Rangel
,Gustavo Alberto Vera Pérez
,Malcom D. Prestonji
,Rodolfo Guerrero Pérez
,Gerardo Marín
Posted: 20 November 2025
Neurogenesis and Neuroinflammation in Dialogue: Mapping Gaps, Modulating Microglia, Rewiring Aging
Masaru Tanaka
Posted: 20 November 2025
Percutaneous Transluminal Angioplasty and Stenting for Symptomatic Intracranial Stenosis After SAMMPRIS: Patient Selection and Clinical Outcomes
Leonhard Mann
,Patrick Samp
,Jan Hendrik Schäefer
,Elke Hattingen
,Joachim Berkefeld
,Dimah Hasan
,Fee C. Keil
Posted: 20 November 2025
State-of-the-Art Testamentary Capacity Assessment Tool (TCAT) in Dementia: A Review of Studies and Update Report
Panagiota Voskou
,Athanasios Douzenis
,Alexandra Economou
,Sokratis G. Papageorgiou
Posted: 19 November 2025
Transcutaneous Auricular Vagus Nerve Stimulation for Treating Emotional Dysregulation and Inflammation in Common Neuropsychiatric Disorders
William Tyler
Posted: 19 November 2025
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