MentalHealthDaily

bvFTD MRI Atrophy Ratings: Left Orbitofrontal Score Predicted 3.77x Odds

by GLOOM

A 2026 behavioral-variant frontotemporal dementia MRI study found that simple visual ratings of orbitofrontal and frontoinsular brain atrophy helped separate probable from possible bvFTD, with baseline left orbitofrontal atrophy predicting 3.77-fold higher odds of probable bvFTD classification.1 Research Highlights 143 people were rated: the study included 93 probable bvFTD cases, 15 possible bvFTD cases, and …

Brain Lymphatic MRI Shows Aging-Linked Drainage Changes

by GLOOM

MHD featured image for brain lymphatic MRI and aging-linked drainage changes.

A 2022 Nature Communications study used non-contrast 3D T2-FLAIR magnetic resonance imaging (MRI) to map human brain lymphatic signals in living people, including apparent channels from cranial nerves and skull-base structures toward cervical lymph nodes. Research Highlights Non-contrast MRI visualized lymphatic-like brain drainage: Albayram et al. identified dorsal dural signals near venous sinuses and ventral …

IL-6 Deficiency Worsened Parkinson’s Mouse Models, Especially in Females

by GLOOM

MHD featured image for IL-6 deficiency and sex-dependent Parkinson's disease mouse models.

A 2026 mouse study found that complete IL-6 deficiency worsened motor dysfunction and dopaminergic injury in MPTP and alpha-synuclein A53T Parkinson’s disease models, with earlier and broader vulnerability in female knockout mice.1 The result cuts against a simple “less inflammation is always better” frame: recombinant IL-6 partly improved MPTP-induced motor dysfunction and striatal dopaminergic terminal …

PINK1 and Parkin Link Parkinson’s Disease to Failed Mitochondrial Cleanup

by GLOOM

MHD featured image for PINK1, parkin, mitophagy, and mitochondrial cleanup in Parkinson's disease.

A 2026 review ties the Parkinson’s disease genes PINK1 and parkin to damaged-mitochondria cleanup, from damage sensing and ubiquitin tagging to autophagy recruitment and lysosomal degradation.1 That shifts “mitochondrial dysfunction” into specific failure points: tagging, extraction, transport, autophagosome recruitment, and degradation. Research Highlights 18 PARK loci frame inherited risk: PARK2 encodes parkin and PARK6 encodes …

Alzheimer’s Smell Loss Linked to Early Locus Coeruleus Axon Damage

by GLOOM

MHD featured image for early locus coeruleus axon loss and Alzheimer's smell dysfunction.

A 2025 Nature Communications study found that Alzheimer’s-like mice lost locus coeruleus noradrenergic axons in the olfactory bulb early: 14% loss by 2 months, 27% by 3 months, and 33% by 6 months, before broader forebrain axon degeneration appeared.1 Early smell loss may reflect a specific brainstem-to-olfactory circuit injury, while smell testing still needs biomarker …

FTL1 Iron Protein Reversal Improved Cognitive Aging in Old Mice

by GLOOM

MHD featured image for FTL1, iron biology, and cognitive aging in mice.

A 2025 Nature Aging study found that hippocampal ferritin light chain 1 (FTL1) rose with age in mouse neurons, tracked poorer cognition, and became experimentally reversible in old mice. This is an animal-mechanism result, not a human anti-aging treatment.1 Research Highlights FTL1 rose in aged hippocampus: Western blot data showed higher hippocampal FTL1 in aged …

C9orf72 ALS/FTD Inflammation Linked to Microbial Glycogen in Gut

by GLOOM

MHD featured image for C9orf72, microbial glycogen, gut inflammation, and ALS/FTD risk.

A Cell Reports study tied C9orf72-related ALS/FTD inflammation to a gut-bacterial product: inflammatory microbial glycogen appeared in 15 of 22 ALS fecal samples, 1 of 1 C9orf72-frontotemporal dementia sample, and 4 of 12 healthy controls.1 The result supports a narrower gene-by-microbial-product mechanism that makes C9orf72 loss of function more inflammatory. Research Highlights Human samples carried …