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

People used different parts of the brain when thinking about their inner circle and other people they knew.

People use different parts of the brain when they think about their family and closest friends and the rest of their social circle, scientists from Israel and the UK have found. In the first case, parts of the brain that are responsible for processing the mental state are activated, and in the second, those associated… Continue reading People used different parts of the brain when thinking about their inner circle and other people they knew.

More than half of species with unclear conservation status are at risk of extinction

Scientists have created a computer model that estimates the extinction risk of species for which there is insufficient data to assess their conservation status. It turned out that more than half of them should be classified as threatened. And among amphibians with unclear conservation status, about 85 percent of species are likely threatened with extinction.… Continue reading More than half of species with unclear conservation status are at risk of extinction

Doctors transplanted GM pig hearts into two brain-dead patients

American doctors transplanted genetically modified pig hearts into two patients – this is the second and third such cases in history. How reports New York University Medical Center news portal, the hearts functioned for at least 72 hours in two patients diagnosed with brain death who were on mechanical ventilation. Updated: In July 2023, the… Continue reading Doctors transplanted GM pig hearts into two brain-dead patients

Three-day liver transplant gives recipient at least a year to live

Swiss doctors transplanted a liver into the patient, which, using a perfusion machine, was preserved for three days, although transplant centers usually store the liver for no longer than 12 hours. After a year of observation, the recipient has no liver disorders or signs of transplant rejection. According to transplantologists, voiced In the magazine Nature… Continue reading Three-day liver transplant gives recipient at least a year to live

Frogs got snake DNA thanks to parasites

Biologists have discovered horizontal gene transfer between reptiles and amphibians. According to their estimates, Bovine-B passed from snakes to frogs at least 54 times between 85 and 1.3 million years ago. The study was published in the journal Molecular Biology and Evolution. Horizontal transfer is the transfer of genetic material between organisms through a mechanism… Continue reading Frogs got snake DNA thanks to parasites

A pair of antibodies suppressed the reproduction of HIV in the blood of patients for a year

Immunologists tried to achieve remission in HIV-infected patients using a cocktail of two antiviral antibodies. The antibody injections allowed trial participants to live 20 weeks without standard antiviral therapy and several months without treatment at all. Most of the subjects then had to return to standard therapy, but in two people the remission lasted at… Continue reading A pair of antibodies suppressed the reproduction of HIV in the blood of patients for a year

'Extinct' Australian orchid hid under a different name for 22 years

Australian orchid Prasophyllum morganii was considered extinct almost 90 years ago, but botanists managed to prove that this was not so. Comparing dried samples P. morganii with specimens of a similar orchid P. retroflexum, which was described in 2000, the researchers found no significant differences between them and concluded that they should be classified as… Continue reading 'Extinct' Australian orchid hid under a different name for 22 years

Astronomers have found a new ultra-dim satellite galaxy of the Milky Way

Astronomers using the DELVE sky survey have discovered a new ultra-faint dwarf galaxy, Pegasus IV, which is a satellite of the Milky Way. Pegasus IV turned out to be one of the most metal-poor galaxies of this type, and its age is comparable to the age of the Milky Way. A preprint of the work… Continue reading Astronomers have found a new ultra-dim satellite galaxy of the Milky Way

Doctors report remission in a patient with HIV after umbilical cord blood transfusion

American doctors have reported a fourth probable case of cure for HIV after a stem cell transplant. A patient from New York has been in remission for 14 months after stopping antiretroviral therapy, The Guardian reports. She not only received an adult stem cell transplant, but also received a transfusion of umbilical cord blood, the… Continue reading Doctors report remission in a patient with HIV after umbilical cord blood transfusion