Tag

Neuroinflammation

All articles tagged with #neuroinflammation

health3 days ago•5 min saved

Midlife brain-immune shift linked to higher dementia risk

A study of postmortem hippocampus tissue from 40 adults suggests that after about age 50 the brain’s resident immune cells (microglia) are increasingly replaced by blood-derived immune cells carrying stronger inflammatory signals, potentially driving neuroinflammation and dementia risk. The researchers also reported deterioration of blood-brain barrier–related cells and DNA/gene activity changes. While the findings hint at new therapeutic directions, the study’s small sample size and postmortem design mean it cannot establish causation or guide lifestyle changes.

via New York Post|

#aging #alzheimers-disease #brain

health4 days ago•6 min saved

Midlife brain-immune shift linked to dementia risk

New research finds that around age 50 the brain’s protective microglia decline and are replaced by inflammatory cells from the blood, a shift that may raise dementia risk, including Alzheimer’s, and is accompanied by deterioration of the blood–brain barrier and widespread DNA/gene changes. The study analyzed postmortem hippocampal tissue from 40 adults across ages 20–95, a small, early-stage look that cannot prove causation but suggests a possible mechanism and potential for blood-derived immune cells to be targeted for future therapies. The work, funded by NIH and published in Science, highlights variability in brain aging and the need for further research into triggers and modifiers of this immune-cell replacement.

via Fox News|

#alzheimers #blood-brain-barrier #brain-aging

science5 days ago•7 min saved

Youthful TIMP2 Revives Brain Microglia Function in Mice

A youth-associated protein TIMP2 helps brain-resident immune cells (microglia) maintain debris-clearing function and limit inflammatory aging. In aging mice, removing TIMP2 causes microglia to adopt aging-like traits and higher inflammatory signals; conversely, systemic TIMP2 administration improves debris clearance and reduces inflammatory markers, suggesting youth factors can influence brain aging and may inform strategies for neurodegenerative diseases, though human relevance remains to be tested.

via SciTechDaily|

#aging #brain-health #microglia

mental-health6 days ago•26 min saved

Caffeine May Quiet Brain Inflammation to Ease Mood Symptoms in Rodent Studies

A systematic review of 17 rodent studies finds caffeine consistently reduces brain inflammation and anxiety- and depressive-like behaviors, likely via blocking A2A adenosine receptors on microglia and astrocytes; while promising, the results come from animal models and human relevance, dosing, and safety remain uncertain.

via PsyPost|

#anxiety #caffeine #depression

science13 days ago•4 min saved

Youthful TIMP2 Rejuvenates Aging Brain Microglia

The youth-associated protein TIMP2 is essential for healthy microglia; its loss ages microglia and impairs debris clearance, while systemic TIMP2 treatment in aged mice reduces inflammation and restores waste-clearing function, suggesting a potential therapeutic pathway for Alzheimer’s and other neurodegenerative diseases.

via Neuroscience News|

#aging #microglia #neurodegeneration

health16 days ago•160 min saved

Virus, Brain, and Battle: A Family’s PANS Journey

A Canadian family documents their 8-year-old daughter’s abrupt, virus-triggered neuropsychiatric decline, leading to a diagnosis of PANS (pediatric acute-onset neuropsychiatric syndrome). Facing medical skepticism, they pursue evidence-based and experimental treatments—including antibiotics, anti-inflammatories, and ultimately IVIG—along with cross-border care and insurance hurdles. The story underscores ongoing medical debate, the cost of care, and relentless advocacy by families seeking recognition and access to effective treatment.

via The Cut|

#autoimmune #health #ivig

science19 days ago•5 min saved

Blocking Brain Immune Cells Restores Sleep in Alzheimer’s-Model Mice

Researchers at the University of Kentucky found that sleep disruption in Alzheimer’s-model mice is driven by microglia-driven inflammation rather than amyloid plaques. When microglial activity was blocked, the mice gained about two extra hours of restorative sleep per night, although plaque levels did not change. This suggests that calming microglia could improve sleep and potentially slow disease progression, but the findings are currently limited to animal models.

via ScienceAlert|

#alzheimers-disease #amyloid-beta #microglia

science1 month ago•5 min saved

Fat Geography Ties to Brain Aging, Large Multimodal Study Finds

A large multimodal study using UK Biobank data (18,000+ participants) links where fat is stored to brain aging: visceral adipose tissue around organs correlates with white-matter damage and faster brain aging via inflammatory and insulin–glucose pathways, while fat in arms, legs, or trunk shows different brain-system effects. BMI alone misses these risks. The findings suggest reducing visceral fat through targeted lifestyle changes could help prevent neurodegenerative disease, but the study is observational and cannot prove causality; published in Nature Mental Health (2025).

via ScienceAlert|

#brain-aging #fat-distribution #neuroinflammation

science2 months ago•29 min saved

Unabsorbed fructose may fuel anxiety via gut-brain inflammation

New multi-part research links unabsorbed dietary fructose to increased anxiety indicators and brain inflammation. In a healthy male cohort, breath tests showed about 60% had fructose malabsorption; those individuals had higher inflammatory proteins, more bacterial toxins in blood, and distinct gut bacteria, with anxiety scores elevated though not clinically diagnostic. In a mouse model lacking the intestinal fructose transporter, a 5% fructose diet induced anxiety- and depression-like behaviors and strong microglial inflammatory responses, alongside significant gut microbiome shifts. Limitations include male-only participants and observational human data; the findings suggest fructose malabsorption could trigger gut-driven immune signals that affect the brain, warranting trials on fructose-free diets or anti-inflammatory approaches to mood disorders.

via PsyPost|

#anxiety #fructose-malabsorption #gut-brain-axis

health-and-medicine2 months ago•7 min saved

Nitrosylation Switch in STING Drives Alzheimer’s Brain Inflammation, Study Finds

Researchers at Scripps Research identified a chemical change known as S-nitrosylation of the STING protein at cysteine 148 that pushes brain immune cells into chronic inflammation in Alzheimer’s disease. Blocking this modification in a mouse model reduced neuroinflammation and protected synapses, and the same pathway was observed in human Alzheimer’s brain tissue and stem-cell models, suggesting a targeted therapy that quiets harmful inflammation without suppressing normal immunity. The team plans preclinical testing of small molecules to block cysteine 148.

via ScienceDaily|

#alzheimers-disease #cysteine-148 #health-and-medicine

science3 months ago•11 min saved

Ozempic May Rewire the Brain, Changing Mood, Motivation and Cravings

New research suggests GLP-1 drugs like Ozempic—used for obesity and diabetes—may reshape brain networks and influence appetite, mood, cognition and addiction. Early brain scans in teens and young women on GLP-1s showed increased connectivity in the salience network within months, hinting at direct neural effects or indirect changes via gut-brain pathways. Scientists are exploring roles beyond weight loss, including potential impacts on anxiety, compulsive thinking and addiction, while noting that long-term, developmental effects (especially in adolescents) remain unclear. Although some trials hint at neuroprotective signals, a major Alzheimer’s trial with a related drug failed to slow cognitive decline, underscoring that conclusions about brain health from GLP-1s are still uncertain and ongoing.

via Yahoo|

#addiction #brain-networks #glp-1-drugs

science3 months ago•4 min saved

Two-dose nasal spray reverses brain aging markers in animal models

Texas A&M researchers report that a two-dose intranasal spray delivering extracellular vesicles loaded with microRNAs reduced brain inflammation, restored mitochondrial function, and improved memory in animal models—hinting at a potential, noninvasive therapy for age-related cognitive decline and dementia, though human trials are not yet underway and findings are preclinical.

via ScienceDaily|

#aging #dementia #extracellular-vesicles

health-and-medicine3 months ago•6 min saved

USC Targets Hidden Alzheimer's Inflammation Trigger with Brain-Penetrant Inhibitor

USC researchers identified selective inhibitors of the brain inflammation enzyme cPLA2 that may lower Alzheimer’s risk, especially for APOE4 carriers; the compounds cross the blood-brain barrier, showed activity in brain cells and mouse models, and represent a promising but early-stage drug discovery path with safety and feasibility in humans to be determined.

via ScienceDaily|

#alzheimers-disease #apoe4 #cpla2

health3 months ago•10 min saved

Two Drugs Spark Remyelination in MS Models, Hinting at Nerve Repair

Finnish researchers identified two drug molecules that promote remyelination in MS models, suggesting a potential path to repairing nerve damage rather than only reducing inflammation. One drug targets the unfolded protein response in brain cells, while the other alters scar tissue around damaged areas. Both produced strong remyelination and lower neuroinflammation in animal and cell models, but human trials and brain-delivery challenges remain before clinical use.

via SciTechDaily|

#health #multiple-sclerosis #myelin-repair

science3 months ago•12 min saved

Androgen loss may accelerate brain tumor growth through neuroinflammation

A Nature News & Views piece summarizes Lee et al.'s finding that loss of male sex hormones triggers neuroinflammation and disrupts hormonal and immune signaling via the HPA axis, potentially accelerating brain tumor growth, contrasting with androgen-blockade benefits seen in many other cancers.

via Nature|

#androgens #brain-tumor #hpa-axis