RUDN University doctors found alterations in serum amino acid profile in children with attention deficit hyperactivity disorder (ADHD). The findings will help to understand the mechanism of the disorder and develop new treatment strategies. The study is published in the journal Biomedical Reports. Attention deficit hyperactivity disorder (ADHD) is a neurodevelopmental disorder that manifests itself in childhood. Children with ADHD find it difficult to concentrate and manage their impulsivity. It is known that ADHD is also manifested at the neurochemical level -- for example, the work of dopamine and norepinephrine is disrupted. However, there is still no definitive data ...

The death of a mother is a traumatic event for immature offspring in species in which mothers provide prolonged maternal care, such as in long-lived mammals, including humans. Orphan mammals die earlier and have less offspring compared with non-orphans, but how these losses arise remains under debate. Clinical studies on humans and captive studies on animals show that infants whose mothers die when they are young are exposed to chronic stress throughout their lives. However, such chronic stress, which has deleterious consequences on health, can be reduced or even cancelled if human orphans are placed in foster families young enough. How stressed orphans are in the wild and whether ...

Testicular cancer is the most common cancer among men under 40 in Europe and the USA. National statistics from the Cancer League indicate 471 new cases and 12 deaths in Switzerland. In general, the prospects for successful treatment of testicular cancer are good over time and, especially with early diagnosis, even further improved. Even if metastases are already present, testicular cancer can be successfully treated with appropriate therapy in the majority of cases. New classification enables even more targeted treatment The primary treatment for testicular cancer is the removal of the affected testicle. However, the disease is often only discovered at a stage where metastases are already present and then, after the primary surgical procedure, ...

Modelling the financial system as a network is a precondition to understanding and managing challenges of great relevance for society, including the containment of financial crises and the transition to a low-carbon economy. Financial Networks is the scientific discipline that deals with these issues. An article published in the scientific journal Nature Review Physics carries out the first comprehensive review of this exciting interdisciplinary field. By covering over 250 studies across domains, the paper is also a call for researchers in all scientific disciplines to consider the insights from the financial network models, because of their implications for citizens, public agencies and governments. Professor Guido Caldarelli from Ca' Foscari University of Venice coordinated ...

In the mid-14th century Europe was devastated by a major pandemic - the Black Death - which killed between 40 and 60 per cent of the population. Later waves of plague then continued to strike regularly over several centuries. Plague kills so rapidly it leaves no visible traces on the skeleton, so archaeologists have previously been unable to identify individuals who died of plague unless they were buried in mass graves. Whilst it has long been suspected that most plague victims received individual burial, this has been impossible to confirm until now. ...

RUDN University biotechnologists have created a method for detection of bacterial infection in apple, pear, hawthorn and other plants of the Rosaceae family. The test does not require laboratory equipment, the result is ready in 10 minutes. This will allow detecting the disease quickly and prevent the spread of infection. The results are published in Physiological and Molecular Pathology of Plants. Erwinia amylovora bacteria causes a dangerous infectious disease in plants -- a fire blight. Most plants of the Rosaceae family are vulnerable to it, for example, hawthorn, apple, pear. The bacteria causes the blossom to wither, the leaves dry up and curl, the bark develop necrotic lesions. The disease can spread through infected plants, garden tools, and with the wind, which ...

Researchers from Tokyo Medical and Dental University (TMDU) find that the secretion of uromodulin protein into urine can be induced by treatments that may protect against urinary tract infections and kidney stones, among other diseases Tokyo, Japan - The normal function of uromodulin, a protein that is made in the kidney and secreted into the urine, remains largely unknown. However, higher levels of uromodulin in the urine are related to lower rates of urinary tract infections and kidney stones, while higher levels of this protein in kidney cells are associated with higher rates of hypertension and chronic kidney disease. Researchers from Japan have now uncovered how uromodulin secretion into the urine can be increased by the hormone vasopressin--a finding that may ...

A study performed by researchers at the Institute for Advanced Chemistry of Catalonia (IQAC-CSIC) from the Spanish National Research Council (CSIC) in collaboration with Stony Brook University (USA) proposes a new strategy for the development of new drugs based on the inhibition of tyrosine kinase enzymes, molecules that activate and trigger many cellular processes. The results have been published in the Chemistry - A European Journal. The new approach is based on the regulation of the signaling cascade of tyrosine kinases, and could lead to the development ...

Today as they did 100 years ago, doctors diagnose cancer by taking tissue samples from patients, which they usually fix in formalin for microscopic examination. In the past 20 years, genetic methods have also been established that make it possible to characterize mutations in tumors in greater detail, thus helping clinicians select the best treatment strategy. Even tiny tissue samples can be used to detect proteins Now, a group of researchers from the Berlin-based Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), the Berlin Institute of Health (BIH), Charité - Universitätsmedizin ...

The German National Academy of Sciences Leopoldina and the German Council for Sustainable Development (RNE) have published a joint position paper presenting paths to climate neutrality by 2050. In it, the Leopoldina and the RNE highlight options for action to effect the changes needed within society, at political level and in the business world, in view especially of the urgency and the historic dimensions of the transformation we face. With the paper, the Leopoldina and the RNE are consciously not seeking to engage in a race to set the most ambitious target. They are instead offering an options paper for setting the right course and covering the key implementation steps. ...

Abu Dhabi, UAE: Trans-Neptunian Objects (TNOs), small objects that orbit the sun beyond Neptune, are fossils from the early days of the solar system which can tell us a lot about its formation and evolution. A new study led by Mohamad Ali-Dib, a research scientist at the NYU Abu Dhabi END ...

Chemical engineers at the University of Illinois Chicago and UCLA have answered longstanding questions about the underlying processes that determine the life cycle of liquid foams. The breakthrough could help improve the commercial production and application of foams in a broad range of industries. Findings of the END ...

The glaciers of Nanga Parbat - one of the highest mountains in the world - have been shrinking slightly but continually since the 1930s. This loss in surface area is evidenced by a long-term study conducted by researchers from the South Asia Institute of Heidelberg University. The geographers combined historical photographs, surveys, and topographical maps with current data, which allowed them to show glacial changes for this massif in the north-western Himalaya as far back as the mid-1800s. Detailed long-term glacier studies that extend the observation period ...

DALLAS, June 16, 2021 -- Findings from a small study detailing the treatment of myocarditis-like symptoms in seven people after receiving a COVID-19 vaccine in the U.S. are published today in the American Heart Association's flagship journal Circulation. These cases are among those reported to the Centers for Disease Control and Prevention's Vaccine Adverse Event Reporting System (VAERS) documenting the development of myocarditis-like symptoms in some people who received the COVID-19 vaccine. Myocarditis is a rare but serious condition that causes inflammation of the middle layer of the wall of the heart muscle. It can weaken the heart and affect the heart's electrical system, which keeps the heart pumping regularly. It is most often the result of an infection and/or ...

They're cute, they're furry, and they start diving into frigid Antarctic waters at 2 weeks old. According to a new study from California Polytechnic State University, Weddell seal pups may be one of the only types of seals to learn to swim from their mothers. Weddell seals are the southernmost born mammal and come into the world in the coldest environment of any mammal. These extreme conditions may explain the unusually long time they spend with their mothers. The study, "Early Diving Behavior in Weddell Seal (Leptonychotes Weddellii) Pups," was published earlier this month in the Journal of Mammalogy. According to the Seal Conservation Society, adult Weddell seal females are ...

Once thought to be extinct, lobe-finned coelacanths are enormous fish that live deep in the ocean. Now, researchers reporting in the journal Current Biology on June 17 have evidence that, in addition to their impressive size, coelacanths also can live for an impressively long time--perhaps nearly a century. The researchers found that their oldest specimen was 84 years old. They also report that coelacanths live life extremely slowly in other ways, reaching maturity around the age of 55 and gestating their offspring for five years. "Our most important finding is that the coelacanth's age was underestimated by a factor of five," says Kélig Mahé of IFREMER Channel and North ...

The birth of a human being requires billions of cell divisions to go from a fertilised egg to a baby. At each of these divisions, the genetic material of the mother cell duplicates itself to be equally distributed between the two new cells. In primary microcephaly, a rare but serious genetic disease, the ballet of cell division is dysregulated, preventing proper brain development. Scientists from the University of Geneva (UNIGE), in collaboration with Chinese scientists, have demonstrated how the mutation of a single protein, WDR62, prevents the proper formation of the cable network responsible for separating genetic material into two. As cell division is then slowed down, the brain ...

BOSTON - An antibiotic developed in the 1950s and largely supplanted by newer drugs, effectively targets and kills cancer cells with a common genetic defect, laboratory research by Dana-Farber Cancer Institute scientists shows. The findings have spurred investigators to open a clinical trial of the drug, novobiocin, for patients whose tumors carry the abnormality. In a study in the journal Nature Cancer, the researchers found that in laboratory cell lines and tumor models novobiocin selectively killed tumor cells with abnormal BRCA1 or BRCA2 genes, which help repair damaged DNA. The drug was effective even in tumors resistant to agents known as PARP inhibitors, which have become a prime therapy for cancers with DNA-repair glitches. "PARP inhibitors ...

Ultrathin, flexible computer circuits have been an engineering goal for years, but technical hurdles have prevented the degree of miniaturization necessary to achieve high performance. Now, researchers at Stanford University have invented a manufacturing technique that yields flexible, atomically thin transistors less than 100 nanometers in length - several times smaller than previously possible. The technique is detailed in a paper published June 17 in Nature Electronics. With the advance, said the researchers, so-called "flextronics" move closer to reality. Flexible electronics promise bendable, ...

PHILADELPHIA-- The COVID-19 death rate for Black patients would be 10 percent lower if they had access to the same hospitals as white patients, a new study shows. Researchers from the Perelman School of Medicine at the University of Pennsylvania and OptumLabs, part of UnitedHealth Group, analyzed data from tens of thousands of hospitalized COVID-19 patients and found that Black patients died at higher rates than white patients. But the study, published today in JAMA Network Open, determined that didn't have to be the case if more Black patients were able to get care at different hospitals. "Our study reveals that Black patients have worse outcomes largely because they tend to go to worse-performing hospitals," said the study's first author, David Asch, MD, ...

What The Study Did: The findings of this study suggest that the increased mortality among Black patients hospitalized with COVID-19 is associated with the hospitals at which Black patients disproportionately received care. Authors: David A. Asch, M.D., M.B.A., of the University of Pennsylvania in Philadelphia, is the the corresponding author. To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/ (doi:10.1001/jamanetworkopen.2021.12842) Editor's Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, ...

What The Study Did: Researchers evaluated the association of convalescent plasma treatment with 30-day mortality in hospitalized adults with hematologic (blood) cancers and COVID-19. Authors: Jeremy L.Warner, M.D., M.S., of Vanderbilt University in Nashville, Tennessee, is the corresponding author. To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/  (doi:10.1001/jamaoncol.2021.1799) Editor's Note: The article includes conflict of interest and funding/support disclosures. Please ...

What The Study Did: This study examined whether mandatory daily employee symptom data collection can be used as an early alert surveillance system to estimate COVID-19 hospitalizations in communities where employees live. Authors: Steven Horng, M.D., M.MSc., of Beth Israel Deaconess Medical Center in Boston, is the the corresponding author. To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/ (doi:10.1001/jamanetworkopen.2021.13782) Editor's Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support. INFORMATION: Media advisory: The full study ...

What The Study Did: In this survey study, COVID-19 was associated with large reductions in economic security among women at high risk of HIV infection in Kenya. However, shifts in sexual behavior may have temporarily decreased their risk of HIV infection. Authors: Harsha Thirumurthy, Ph.D., of the Perelman School of Medicine at the University of Pennsylvania in Philadelphia, is the the corresponding author. To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/ (doi:10.1001/jamanetworkopen.2021.13787) Editor's Note: The article includes funding/support disclosures. Please see the article for additional information, including other authors, ...

What The Study Did: Researchers estimated survival and other outcomes of very preterm infants in China discharged against medical advice from neonatal intensive care units before complete care can be provided compared with infants who receive full intensive care treatment. Authors: Yun Cao, M.D., Ph.D., and Weili Yan, Ph.D., of Children's Hospital of Fudan University in Shanghai, China, are the corresponding authors. To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/ (doi:10.1001/jamanetworkopen.2021.13197) Editor's Note: The article includes conflicts of interest and funding/support disclosures. Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest ...