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The mind of three species Dolphin They showed signs of being kidnapped off the coast of Scotland. DementiaAccording to new research, it provides more insight into the disease in species other than humans.

The findings may provide possible answers to the unexplained. Threads According to researchers, dolphins on the beach.

Dementia It is a common neurological disorder It mostly affects older people, with symptoms like: Loss of memory, forgetfulness and confusion.

According to a study published on December 13 European Journal of NeuroscienceResearchers in Scotland conducted a post-mortem study on 22 brains. odontocetesOr toothed whales, comparing their findings with others makes it more detailed The authors said.

All specimens were stranded on the coast of Montrose, Scotland, as were white-beaked dolphins.

Mark Daglish, the author, “looks at the depth and range of animals from the many different species of cetaceans known to be (old) for this species.” And a senior clinician in anatomic pathology from the University of Glasgow told CNN on Tuesday.

The study looked at samples from five species: Risso’s dolphins, long-finned pilot whales, white-beaked dolphins, harbor porpoises and bottlenose dolphins. Of the 22 studied, 18 were aged specimens.

“Essentially,[he]examined the entire brain using additional markers of Alzheimer’s disease to provide[abnormal]manifestations of the lesion,” Daglish added, noting that similar methods are used for human tissue.

The findings showed that three aging dolphins – the long-finned pilot whale, the white-beaked dolphin and the bottlenose dolphin – presented the brain changes or damage associated with Alzheimer’s disease in humans.

Tara Spice-Jones, Another study author by A press release This week, researchers were surprised to see “brain changes in dolphins that are similar to those seen in humans (aging) and Alzheimer’s disease.”

“Whether these changes, if any, contribute to the pinching of these animals is an interesting and important question for future work,” Spiers-Jones said. Personal Chair in Neurodegeneration at the Deanery of Biomedical Sciences, University of Edinburgh.

Long-finned pilot whales are among the older dolphins that have shown similar damage to people with Alzheimer's disease.

The researchers found that the samples accumulated and produced phospho-tau proteins and glial cells. amyloid-beta plaquesA protein complex found in the brains of people with Alzheimer’s disease. According to the research paper, the distribution of these lesions is comparable to brain regions with Alzheimer’s in humans.

The discovery is “the closest any animal has ever come to showing that only humans develop Alzheimer’s disease-related lesions,” Daglish said.

Odontocetes are regularly stranded on UK beaches in groups, which the study authors say could support the “sick leader” theory, where the group takes an older leader into shallow water, possibly because of the leader’s disorientation.

Similar neuropathology in elderly dolphins and people with Alzheimer’s disease suggests that marine mammals are susceptible to the disease, but Daglish said the diagnosis can only be made if cognitive deficits are present. These are typically found using assessments of cognitive impairment – ​​not possible with post-mortem studies.

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