Peptides that form amyloid plaques in Alzheimer’s may be transmissible, study finds

Amyloid β, the peptide that forms amyloid plaques in the brains of people with Alzheimer’s disease, may be transmissible through medical treatments such as blood products and surgical instruments, a small UK study published in Nature has shown.

Researchers working on iatrogenic Creutzfeldt-Jakob disease (iCJD) unexpectedly found four autopsy cases with moderate to severe deposition of amyloid β in the grey matter of the brain typical of that seen in Alzheimer’s disease. They also found the peptide in the blood vessel walls deposited in a way that was characteristic of cerebral amyloid angiopathy.

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Which app should I use?

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There are well over 150 000 health apps available in Europe—from those designed to improve general wellness to apps that monitor medical conditions, apps for clinicians, and apps that function as medical devices. There have been more than 102 billion downloads of health apps worldwide yet there is little regulation or guidance available for doctors or patients on quality, safety, or efficacy.

Young adults using e-cigarettes are more likely to progress to smoking, study shows

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Adolescents and young adults who use electronic cigarettes are more likely to progress to smoking tobacco cigarettes than those who do not, shows a small US study that researchers say supports regulations to limit sales and reduce the appeal of e-cigarettes to young people.

The study, published in JAMA Pediatrics, followed up a nationally representative sample of 694 teenagers and young adults aged 16 to 26 who had never smoked. Their attitudes showed that they were not susceptible to smoking cigarettes because they had responded “definitely no” when asked whether they would try a cigarette offered by a friend or whether they believed that they would smoke a cigarette within the next year.