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
Summary
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.
Sign in to start a discussion.
More Papers Like This
Microglial clearance of Alzheimer's amyloid-beta obstructed by nanoplastics
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
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.
Impact of nanoplastics on Alzheimer ’s disease: Enhanced amyloid-β peptide aggregation and augmented neurotoxicity
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
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.
Cerebral to Systemic Representations of Alzheimer’s Pathogenesis Stimulated by Polystyrene Nanoplastics
Researchers found that environmentally realistic levels of polystyrene nanoplastics worsened Alzheimer's disease symptoms in mice, triggering brain inflammation, neuron death, and cognitive decline. The nanoplastics also disrupted metabolism and caused organ damage beyond the brain, including liver and kidney effects. This study provides some of the first evidence that nanoplastic exposure could accelerate brain diseases like Alzheimer's, especially as nanoplastics have been found in human brain tissue.