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Dolphins stranded on the beaches of Florida and Massachusetts show in their brains amyloid plaques, a hallmark in human beings of Alzheimer's disease, together with an environmental toxin produced by cyanobacterial blooms.
An international team of scientists led by neuropathologist Dr. David Davis at the University of Miami Neurology Department discovered that stranded dolphins have both β-amyloid plaques and the environmental toxin BMAA in their brains.
Plaques - Neurons - Brain - Tissues - Dolphins
"We found β-amyloid plaques and damaged neurons in brain tissues from dolphins that had died on the beaches of Florida and Massachusetts," Dr. Davis said.
"Dolphins are an excellent sentinel species for toxic exposures in the marine environment," co-author Dr. Deborah Mash explained. "With increasing frequency and duration of cyanobacterial blooms in coastal waters, dolphins might provide early warning of toxic exposures that could impact human health."
Scientists - Exposure - Toxin - BMAA - Plaques
Scientists have previously found that chronic dietary exposure to the cyanobacterial toxin BMAA triggers β-amyloid plaques and neurofibrillary tangles, both hallmarks of Alzheimer's disease, in laboratory animals.
Neuropathological analysis was completed at the University...
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