We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Nanoplastics trigger glial–neuronal collagen signaling miscommunication to exacerbate cognitive impairment in Alzheimer's disease
AI summary Read the abstract
Researchers found that polystyrene nanoplastics worsen cognitive impairment in Alzheimer's disease mouse models by disrupting communication between glial cells and neurons through the collagen-integrin signaling pathway. The study showed that nanoplastics triggered astrocytes and microglia to produce excess collagen, driving neurotoxicity. A drug blocking collagen signaling rescued cognitive function in nanoplastic-exposed Alzheimer's mice, and the same collagen pathway was found to be upregulated in human Alzheimer's brains.
MNPs act as environmental risk factors that worsen cognitive impairment in AD. PS-NPs trigger glial-neuronal communication via the collagen-integrin axis in AD. PS-NP-induced astrocyte- and microglia-derived collagen, driving neurotoxicity in AD. TC-I 15 blocked collagen signaling and rescued cognition in PS-NP-exposed AD mice. Collagen signaling was upregulated in human AD brains, confirming disease relevance.
More Papers Like This
Microglial clearance of Alzheimer's amyloid-beta obstructed by nanoplastics
AI summary Read the abstract
Researchers found that polystyrene nanoplastics interfere with the brain's ability to clear amyloid-beta, the protein that builds up in Alzheimer's disease. The nanoplastics accelerated amyloid clumping and drained the energy of brain immune cells that normally clean up these harmful proteins. This study suggests that nanoplastic exposure could worsen or contribute to the development of Alzheimer's disease.
Cerebral to SystemicRepresentations of Alzheimer’sPathogenesis Stimulated by Polystyrene Nanoplastics
AI summary Read the abstract
Researchers exposed both wild-type and APP/PS1 Alzheimer's model mice to environmental levels of polystyrene nanoplastics and measured Alzheimer's-like pathology progression. Nanoplastics exacerbated cognitive decline, microglial activation, and hippocampal neuronal death, particularly in the Alzheimer's model, with systemic inflammatory effects suggesting plastic particles may accelerate neurodegeneration.
Polystyrene nanoplastics induce hippocampal damage and cognitive deficits through oxidative stress-triggered microglial extracellular traps and neuronal ferroptosis
AI summary Read the abstract
Researchers showed that polystyrene nanoplastics impair spatial memory in mice by triggering a cascade in which hippocampal oxidative stress activates microglia to release extracellular traps, sustaining neuroinflammation that drives neuronal ferroptosis — a form of iron-dependent cell death — and that the antioxidant N-acetylcysteine blocks this entire pathway and preserves cognitive function.
Impact of nanoplastics on Alzheimer ’s disease: Enhanced amyloid-β peptide aggregation and augmented neurotoxicity
AI summary Read the abstract
Researchers found that even very low concentrations of polystyrene nanoplastics can speed up the clumping of amyloid-beta protein, a hallmark of Alzheimer's disease, and increase its toxicity to brain cells. The hydrophobic (water-repelling) surface of the nanoplastics helps the proteins stick together faster, suggesting a potential link between environmental nanoplastic exposure and increased risk of Alzheimer's disease.
Food-borne polystyrene microplastic exposure exacerbates cognitive deficiency via enhanced neuronal synaptic damage and neuroinflammation in Alzheimer's disease
AI summary Read the abstract
This study exposed Alzheimer's disease model mice (APP/PS1) to polystyrene microplastics via food and found that MP exposure worsened cognitive deficits by exacerbating hippocampal mitochondrial damage and neuroinflammation. The results suggest MP exposure may accelerate Alzheimer's disease progression in vulnerable individuals.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.