The results of the simulation, which was conducted by American scientists, showed that some stars can be up to seven potentially habitable planets. The paper was published in the journal Astronomical Journal.
The search for life in outer space, scientists tend to restrict the so-called habitable zone — the region around a star where orbiting it planets may be liquid water needed to sustain life in the form we know it.
Singapore scientists have announced the successful completion of the first phase of clinical trials they have developed an experimental drug against yellow fever. The study is published in the New England journal of Medicine.
Yellow fever — a hemorrhagic disease widespread in South America and Africa South of the Sahara, which annually affects about 200 thousand people, from them about 30 thousand die. So far there are no approved treatments for this disease. Although there is a vaccine against yellow fever, it is impossible to give some people because of the risk of side effects.
The international ENCODE consortium, consisting of 500 scientists and biologists from many countries of the world announced the completion of the third phase of the global project on compilation of an encyclopedia of functional DNA elements. In 14 articles published in Nature, Nature Methods and Nature Communications, the authors summarize 17 years of experience.
The human genome contains about 20 thousand genes encoding proteins, which account for only about 1.5 percent of the DNA of the human genome.
Evolutionary analysis of the genome of the novel coronavirus SARS-CoV-2 showed that it was separated from the most closely related viruses of bats of about 40-70 years ago. The study is published in the journal Nature Microbiology.
Biologists from the United States, Belgium, great Britain and China under the leadership of Professor David Robertson (David Robertson) from the Center for virus research University of Glasgow analyzed the evolutionary history of SARS-CoV-2. They used genomic data saribekovich — the representatives of the subgenus of coronaviruses that cause severe acute respiratory syndrome, which include including SARS-CoV and SARS-CoV-2.
American scientists have identified microRNA that promotes regeneration of hair and may in the future become the basis for the development of drugs against baldness. The study is published in the journal Science Advances.
Modern methods of treatment of hair loss, ranging from invasive surgery and ending with chemical treatments are expensive and not always effective.
American scientists have discovered in mouse brain neural connection between the rear division of the amygdala and the hypothalamus, which is responsible in males for sexual desire and aggression. The study is published in the journal Nature Neuroscience.
Neurophysiologists have long known that the posterior amygdala, or the amygdala has a huge impact on social behavior, but its connection with sexual desire, until recently, was not known.
American and Korean scientists have found that heparin, part of the seaweed blocks the new coronavirus is better than ramdevpir is the main drug from COVID-19 used in the United States. The study is published in the journal Cell Discovery.
In order to penetrate into the human cell, the virus SARS-CoV-2 needs to engage his spiculum protein for ACE2 receptor on its surface. But you can send to the virus molecule-the bait similar form, and he will contact her, and then caught in a trap, without possibility of replication, eventually the natural way be destroyed.
Russian scientists from the Siberian Federal University have developed a new type of sorbent for collecting rare metals from ash and volcanic deposits. It is made on the basis of vikramasila from rice husks. The study is published in the journals Analytical Methods and Separation Science and Technology.
Rare earth elements (REE) or rare earth widely used in the manufacture of modern electronics, lasers, SuperMagnets, electric vehicles, superconductors, metallurgy and medicine. In nature the rare earths are found in scattered form in the form of oxides, and this severely complicates their extraction on an industrial scale.
Geneticists have found that one of the genes that modern humans inherited from Neanderthals, which encodes an ion channel that is responsible for the sensation of pain. Hence, scientists have concluded that Neanderthals had a lower pain threshold than other types of people. The study is published in the journal Current Biology.
Neanderthals and modern man mixed-and swapped genes multiple times over thousands of years.
Scientists from the U.S. and China have developed a method, allowing the blood test to detect five forms of cancer four years before you see the first signs that capture modern methods of diagnosis. Described in the journal Nature Communications.
The test, called PanSeer that effectively identifies at the earliest stages of stomach cancer, esophagus, lung and liver and colorectal cancer.
According to the study, which was conducted by scientists of the three countries that cinnamon improves blood sugar control in people with prediabetes and can slow the progression of it to type II diabetes. The paper was published in the journal of the Endocrine Society.
Endocrinologists from Joslin diabetes center in Boston, USA — the world's largest research center for the study of diabetes — together with German colleagues from the Regional medical center, Landstuhl and scientists from the University Kyung-Hee in Seoul, South Korea conducted a randomized clinical trial the effect of supplementation with cinnamon on blood sugar control in people with advanced stage of diabetes.
Scientists found out that by 2100 most subpopulations of polar bears in the Arctic are under threat of extinction due to reduction of sea ice caused by global warming. The study is published in the journal Nature Climate Change.
Polar bears Ursus maritimus species use sea ice to hunt with him on seals. In the summer, during the melting of coastal ice animals move on land where they have virtually no food and are funded by accumulated fat. Since the warm season in the Arctic lengthened, and the area of sea ice decreases in response to warming, polar bears each year have to be on the mainland more and more time
American scientists have developed a nanopreparation, which directly affects the aggressive cancer cells in the breast, killing them without toxic side effects. It is effective against the most complex shape — triple negative breast cancer. The study is published in the journal of Advanced Therapeutics.
Triple negative breast cancer — the most aggressive and deadly form of cancer of the breast. It does not contain any one of three types of proteins-receptors — estrogen, progesterone and epidermal growth factor person of the second type. This means that it cannot be treated using a receptor-oriented therapy. Doesn't always work and chemo, as the cancer rapidly develops metastases throughout the body, and often requires surgical intervention.
The results of many years of research conducted by American scientists, veterinarians, showed that the risks to the health of the dog during sterilization are highly dependent on the breed. The paper was published in the journal Frontiers in Veterinary Science.
Scientists from the University of California, Davis analyzed data on several thousand dogs of 35 breeds 15 years of observation in a Veterinary medical teaching hospital to understand whether the consequences of sterilization, the age and gender of the dog.
British and American scientists have proved that the fossilized feces in the Paisley caves in the Western United States belong to the ancient people who lived here more than 12 thousand years ago, before the advent of Clovis culture. The study is published in the journal Science Advances.
For a long time, until the second half of the twentieth century, it was believed that representatives of culture Clovis were the first people appeared on the American continent. Later Dating of the appearance of people in America have been adjusted, and the theory of the "Clovis — first" — denied. Since then, the archaeologists are constantly looking for evidence of the presence of precursors to Clovis.
American scientists have shown that changing just one gene turns mosquito females to males which do not bite and are not able to convey the threat of infection. The study is published in the journal Proceedings of the National Academy of Sciences.
Biologists from Virginia tech in collaboration with colleagues from the University of Texas A
American scientists first described through the DNA sequence of human chromosome. This is an important step towards creating a full sequence of the human genome. The results were published in the journal Nature.
Scientists from the National Institute for the study of the human genome (NHGRI), part of the National institutes of health (NIH) of the USA together with colleagues from the genomics Institute at the University of California in Santa Cruz announced the first brand bessellieu the Assembly of the DNA sequence of the human X chromosome.
Russian chemists in cooperation with German colleagues have synthesized compounds that are able to highlight the contrast with the calcium ions in solutions, biological tissues and even within cells. The method will find application in the treatment of bone diseases and in non-invasive diagnosis of different tumors associated with excess risk of soft tissue calcification. Description of the development published in the journal Sensors and Actuators B: Chemical.
The study was conducted by staff of the Department of chemistry and technology of biomedical preparations RCTU named after D. I. Mendeleev, in cooperation with the Institute of gene biology of RAS, Institute General physics of RAS, as well as the Technical University of Chemnitz and the University of Erlangen-Nuremberg in Germany. The work is executed at support of Russian science Foundation grant.
American doctors discovered the link between cortisol levels and high blood sugar in people with type II diabetes. The study is published in the journal psychoneuroendocrinology is.
Scientists from the medical center of the Wexner of Ohio state University and the medical College of Ohio conducted a study among people with type II diabetes and depression at the same time, and found that these diseases are interrelated. The authors found in these patients, a clear relationship between the levels of the stress hormone cortisol and glucose.
South African scientists have discovered that aardvarks are usually active only at night, began to leave in search of food during the day. The researchers suggest that this is due to climate change and lack of food. Violation of circadian rhythm, according to biologists, may have a negative impact on the survival of these rare mammals and lead to the disruption of the ecosystem as a whole. The study is published in the journal Frontiers in Physiology.
The African aardvark is the only modern representative of the relic squad trubkozuby. Animals remained only in Africa South of the Sahara. They lead a solitary lifestyle, living in burrows, feed on ants and termites.
Russian scientists together with colleagues from Belgium with a substance — a prototype of personalized drugs against autoimmune diseases and cancer. The study is published in the journal Frontiers in Pharmacology.
The basis was taken the poison motley Scorpion Mesobuthus eupeus, can block potassium channels "gateway" for potassium ions across the cell membrane. These are essential to every cell elements are involved in many cellular processes, such as conducting nerve impulses, cell division and their interactions with each other, as well as in the immune response.
North American scientists have built a model of the transmission of the new coronavirus taking into account the asymptomatic carriers. It turned out that without accounting for and control of this category of infected to fight off the infection is unlikely to succeed. The study is published in the journal Proceedings of the National Academy of Sciences.
Since COVID-19 worldwide was introduced unprecedented restrictions on movement and measures of social distancing. The consequences for the economy of many countries was very serious. In addition, in some places there were social protests led by the measures limiting personal liberty.
In the Triassic deposits of Madagascar have found a small fossil reptile. Animal of no more than ten centimeters refers to the group, that led to the giant dinosaurs and pterosaurs. Detailed description of the findings given in the journal Proceedings of the National Academy of Sciences.
Dinosaurs and flying reptiles, the pterosaurs are famous for their huge size. It is therefore surprising that their immediate ancestors were very small. In the Triassic sediments age 237 million years in the South-West of Madagascar found the bones of reptiles, called Kongonaphon kely, or "tiny killer bugs".
Studying molecular changes in the genome over time, American researchers have developed a formula for a more accurate comparison of the age of the dog with age. This is the first scientific study on the subject. The results were published in the journal Cell Systems.
There is a perception that the age of dogs can be assessed in human years, multiply by seven. But the linear comparison is inappropriate, since it is known that representatives of different species age at different speeds.
American scientists have developed a soft polymer material that when the light strikes them they begin to bend, rotate and crawl. Described in the journal Nature Materials.
Researchers from northwestern University in Evanston, Illinois, has created a family of soft "robotic materials". In the light of these thin film materials come to life — bend, rotate, and even crawling over the surface without the aid of additional equipment, hydraulics or electricity.
Researchers from the ITMO University together with the specialists of Tomsk Polytechnic University have created a special glass-ceramic with the addition of chrome for the lights in the greenhouses. Under their light, the plants grow faster. Description of the development appears in the journal Optical Materials.
Many saw in the Windows of houses a bright pink glow is a special lamp used by the owners indoor plants for their flowers did not lack in light. Similar lamps are used and the farmers, placing them in the greenhouses.
Chinese scientists have found that people who are asymptomatic undergoing COVID-19, have a weaker immune response to the virus SARS-CoV-2, and in the future have a chance of getting sick again. The study is published in the journal Nature Medicine.
In the study, which was conducted by researchers from Chongqing medical University under the guidance of Dr. AI-LON Juan (Ai-Long Huang) from the Laboratory of molecular biology of infectious diseases presented a detailed clinical and immunological analysis of the 37 asymptomatic patients infected with SARS-CoV-2.
Using climate models, scientists have figured out why after a moderate wet winter and warm spring, there is usually a dry summer. The study is published in the journal Science Advances.
In the summer of 2018, the countries of Central and Northern Europe was struck by a drought caused by an extremely hot summer, which was preceded by an early spring with lots of warm and Sunny days. Before that, a similar pattern was observed in 2003 and 2010. In the latter case, the drought has affected not only Europe, but also Western areas of Russia, and the average summer temperature broke the 500-year record of observations.
German scientists have developed based on calcium phosphate cement for bone bonding and manufacture of implants which have the property to regenerate itself. The study is published in the journal Scientific Reports.
The human body is able to cure many injuries and wounds alone, but in complex injuries of the bones required surgical intervention. In such cases, doctors use materials that are partially or fully restore the form and function of bone at the site of injury.
Paleontologists from St. Petersburg created the first detailed virtual 3D model of the brain and blood vessels of the head ankylosaur — herbivorous dinosaur, fragments of skull which was found in Uzbekistan. The study is published in the journal Biological Communications.
Ankylosaurs appeared in the middle Jurassic about 160 million years ago and existed until the end of the age of dinosaurs, which ended 66 million years ago. In the course of the study, the authors examined the fragments of fossil skulls of ankylosaur Bissektipelta archibaldi discovered during a series of international expeditions in the late 1990s and early 2000-ies in the area Djarkuduk in the Central Kyzylkum desert in Uzbekistan.
Russian scientists first read the genome of microbes in butter of different brands and found a number of opportunistic species, including dangerous for children. The study is published in the journal Foods.
Dairy products — the excellent environment for the growth of many dangerous bacteria, e.g. Salmonella. In Russia, the product quality according to established Standards, but even at observance of all norms of production, to ensure the absence of microbial contamination is impossible, as it often happens that the microorganisms can be detected only with the involvement of the latest scientific methods.