痴呆

A large study of nearly 2 million older adults has found that cerebral amyloid angiopathy, a condition where amyloid proteins build up in brain blood vessels, sharply increases the risk of dementia. Within five years of diagnosis, people with this disorder were four times more likely to develop dementia than those without it, even absent a history of stroke. The findings, drawn from Medicare records, underscore the need for early cognitive screening in affected individuals.

January 29, 2026 由 AI 报道

Scientists have created innovative nanoparticles designed to destroy harmful proteins linked to dementia and cancer. These particles can access difficult tissues like the brain and precisely eliminate problematic proteins without broad side effects. The technology shows early promise for precision medicine.

阿尔茨海默病试验正转向受癌症研究启发的多靶点方法，即便Novo Nordisk的司美格鲁肽试验失败。只有两种药物——Eli Lilly的Kisunla和Eisai与Biogen的Leqembi——被广泛批准用于减缓疾病进展。这种演变将这种脑部退化疾病视为复杂系统，在其全球影响下寻求新的遏止途径。

December 09, 2025 由 AI 报道 事实核查

Researchers in Germany have identified a rare mutation in the GPX4 enzyme that disables its protective role in neurons, allowing toxic lipid peroxides to damage cell membranes and trigger ferroptotic cell death. Studies in patient-derived cells and mice show a pattern of neurodegeneration that resembles changes seen in Alzheimer’s disease and other dementias.

Washington University scientists report that inhibiting the circadian regulator REV-ERBα raised brain NAD+ and reduced tau pathology in mouse models, pointing to a clock-focused strategy worth exploring for Alzheimer’s disease.

October 29, 2025 由 AI 报道 事实核查

A double‑blind McGill University–led clinical trial reports that 10 weeks of BrainHQ exercises increased a PET marker of cholinergic function in healthy older adults by an amount the authors say roughly offsets about a decade of age‑related decline. The peer‑reviewed study used a specialized tracer to confirm the biochemical change.