Poor protein utilization contributes to neurodegeneration

Neurodegeneration can occur more quickly if nerve cells lack retromer proteins, which are responsible for breaking down toxic tau protein. This conclusion was reached by scientists who observed genetically modified fruit flies that produced human tau protein in 39 neurons of the eye. Tau protein itself already caused the death of nerve cells, and the… Continue reading Poor protein utilization contributes to neurodegeneration

Hormone injections improve cognitive performance in Down syndrome

Injections of a hormone from the hypothalamus, which is responsible for the development of the genital organs and is commonly used to treat infertility, have been able to improve cognitive performance in people with Down syndrome. This was discovered by European scientists who conducted a study on seven young men. After six months of living… Continue reading Hormone injections improve cognitive performance in Down syndrome

The smell of a woman prevented an antidepressant from calming mice

Scientists from the USA and Cyprus have found that the gender of the experimenter can influence the results of medical experiments on mice. It turned out that the smell of men causes stress in animals and a desire to escape from its source. But if a man injects a mouse with an antidepressant, its effect… Continue reading The smell of a woman prevented an antidepressant from calming mice

The return of bison has made the prairie vegetation more diverse

The reintroduction of bison to areas of the prairie where they once lived but were exterminated by humans has a positive effect on the local flora, American ecologists have found. After analyzing the results of an experiment lasting about thirty years, they found that in the presence of bison, the species diversity of prairie plants… Continue reading The return of bison has made the prairie vegetation more diverse

Butyrate saved mice from peanut allergies

Butyrate, which is produced by the intestinal bacteria Clostridium, may help people with severe peanut allergies. This was discovered by scientists who introduced polymer micelles with butyrate into the intestines of mice and relieved them of allergies. The authors believe that such micelles can also help with reactions to other food proteins. A preprint of… Continue reading Butyrate saved mice from peanut allergies

Physicists have found the secret to the perfect pass in American football

American physicists have built the most accurate mathematical model of ball flight for American football and rugby to date. They found that the Magnus effect and the effect of the Earth's rotation have little influence on the outcome of a spiral pass, in contrast to the initial angle between the axis of the ball and… Continue reading Physicists have found the secret to the perfect pass in American football

Poisonous perfluorinated acids decomposed by alkali

Chemists from the USA and China have learned to decompose toxic polyfluorinated carboxylic acids into inorganic products. This process occurred under the action of sodium hydroxide on the acid in an aprotic solvent at elevated temperature. The reaction mechanism was identified and confirmed using computer calculations, scientists write in Science. Polyfluorinated organic compounds are common… Continue reading Poisonous perfluorinated acids decomposed by alkali

Jupiter has limited the parameters of dark matter

Theoretical physicists have proposed a new method for constraining the parameters of dark matter based on data obtained by the orbiting Galileo spacecraft and the Juno station. The researchers calculated the flux of relativistic charged particles produced as a result of the annihilation of dark matter particles and compared the resulting theoretical value with the… Continue reading Jupiter has limited the parameters of dark matter

Jumping spiders were suspected of having the ability to dream

Zoologists have discovered in jumping spiders Evarcha arcuata analogue of the REM sleep phase. During it, these invertebrates move their eye tubes and twitch their limbs and body. They may even have dreams, notes a study published in Proceedings of the National Academy of Sciences. The sleep of many animals consists of alternating periods of… Continue reading Jumping spiders were suspected of having the ability to dream

Lost Colombian saberwing hummingbird rediscovered after 12 years

Found in the mountains of northern Colombia, the Santamartian sabrewing is considered one of the rarest species of hummingbird. Over the past decades, he has been seen only twice – in 1946 and 2010. Some experts even suspected that this species had become extinct. However, according to a press release from the conservation organization Re:wild,… Continue reading Lost Colombian saberwing hummingbird rediscovered after 12 years