Neuroscience

P2X7 Receptors May Link Neuroinflammation to Depression Biology

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P2X7 Receptors May Link Neuroinflammation to Depression Biology

TL;DR: A 2026 review in Purinergic Signalling argues that ATP-gated P2X receptors, especially P2X7 and P2X4, may connect stress-related neuroinflammation with depression and bipolar-disorder biology. Key Findings P2X7 focus: The review describes P2X7 receptor signaling as a major link between stress, microglial activation, NLRP3 inflammasome signaling, cytokine release, and lower neuroplasticity. P2X4 context: P2X4 receptors …

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Poly-GR Increased Ferroptosis Vulnerability in C9orf72-ALS Cells

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Poly-GR Increased Ferroptosis Vulnerability in C9orf72-ALS Cells

TL;DR: A 2026 study in Cell & Bioscience found that poly-GR, a toxic repeat protein linked to C9orf72-ALS, pushed motor neuron-like cells toward ferroptosis by raising lipid peroxidation and ferrous iron while weakening the Nrf2/Slc7a11 antioxidant pathway. Key Findings GR50 model: Researchers expressed EGFP-GR50, a 50-repeat glycine-arginine poly-GR construct, in NSC-34 motor neuron-like cells. Ferroptosis …

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AI-Guided Variable Levodopa Feasible in 5 Parkinson’s Patients

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AI-Guided Variable Levodopa Feasible in 5 Parkinson's Patients

TL;DR: A 2026 open-label feasibility trial in IBRO Neuroscience Reports tested an AI-guided variable levodopa schedule in 5 people with Parkinson’s disease and found 4 patients improved on UPDRS, but the study was far too small and uncontrolled to prove efficacy. Key Findings Feasibility sample: The single-center trial enrolled 5 people with Parkinson’s disease after …

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Social Mindfulness Favored Political Ingroup Members in fMRI Study

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Social Mindfulness Favored Political Ingroup Members in fMRI Study

TL;DR: A 2026 study in Cognitive, Affective, & Behavioral Neuroscience used functional MRI (fMRI) to show that adults made more socially mindful choices for political ingroup members than for outgroup or unclassified partners. Key Findings The fMRI task tested group-identity cues: 45 adults with strong pro- or anti-refugee stances made choices for ingroup, outgroup, or …

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Recurrent Depression Showed Directional Brain Connectivity Imbalance

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Recurrent Depression Showed Directional Brain Connectivity Imbalance

TL;DR: A 2026 preprint in medRxiv linked recurrent major depression to direction-specific effective-connectivity changes, with strongest patterns in cerebellar-cortical, sensorimotor, cognitive, neurotransmitter, and oligodendrocyte precursor cell maps. Key Findings 1,627-person discovery dataset: REST-meta-MDD resting-state functional MRI (fMRI) and T1 MRI data compared 839 people with major depression and 788 controls. Recurrent depression pattern: First-episode drug-naive …

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Parahippocampal Herniation on MRI Mimicked Emergency Brain Disease

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Parahippocampal Herniation on MRI Mimicked Emergency Brain Disease

TL;DR: A 2026 study in Radiology Case Reports described a 14-year-old boy whose seizure workup found a rare congenital left parahippocampal herniation on MRI, with imaging features that favored a benign developmental variant rather than tumor or acute brain herniation. Key Findings One adolescent case: The report involved a previously healthy 14-year-old boy evaluated after …

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Neuropixels Opto Combined Electrophysiology and Optogenetics

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Neuropixels Opto Combined Electrophysiology and Optogenetics

TL;DR: A 2026 methods paper in Nature Methods describes Neuropixels Opto probes that combine high-density neural recording with spatially addressable blue and red optogenetic stimulation in 1 mouse-brain device. Key Findings 960 recording sites: Each prototype probe packed 960 electrical sites on a 70-micrometer-wide, 1-centimeter-long shank. 28 light emitters: Two sets of 14 emitters delivered …

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Two-Dose Intranasal NSC-EV Therapy Reduced Aged Hippocampal Inflammation in Mice

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Two-Dose Intranasal NSC-EV Therapy Reduced Aged Hippocampal Inflammation in Mice

TL;DR: A 2026 mouse study in Journal of Extracellular Vesicles found that two intranasal doses of hiPSC-NSC-EVs reduced inflammatory pathway markers in the aged hippocampus and were associated with better memory performance. Key Findings Two-dose nasal treatment: Late middle-aged 18-month-old male and female C57BL/6J mice received two intranasal doses of hiPSC-NSC-EVs before assessment in old …

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Drosophila Dopamine Signaling Sustained Stress-Induced Courtship Suppression

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Drosophila Dopamine Signaling Sustained Stress-Induced Courtship Suppression

TL;DR: A 2026 study in iScience found that 1 hour of small-space confinement suppressed male courtship in Drosophila, and dopamine signaling into the mushroom body was needed to keep that suppression going after the stress ended. Key Findings 1-hour stress model: Male flies confined in a 3 mm by 2 mm small-space chamber showed reduced …

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Neurogenic Orthostatic Hypotension Was Underdiagnosed and Disabling in MSA Survey

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Neurogenic Orthostatic Hypotension Was Underdiagnosed and Disabling in MSA Survey

TL;DR: A 2026 preprint in medRxiv surveyed people with multiple system atrophy and found that neurogenic orthostatic hypotension was often underdiagnosed, rarely fully controlled, and strongly tied to daily function and caregiver burden. Key Findings 259 MSA respondents: The survey analyzed 259 people with self-reported multiple system atrophy, with mean age 64.38 years and 44% …

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