Medicina (Page 34)

Seeing, hearing, thinking, daydreaming — doing anything at all, in fact — activates neurons in the brain. But for people predisposed to developing brain tumors, the ordinary buzzing of their brains could be a problem. A study by researchers at Washington University School of Medicine in St. Louis and StanfordContinuar Leyendo

Amsterdam, May 26, 2021.- Alzheimer’s disease is the main cause of dementia and current therapeutic strategies cannot prevent, slow down or cure the pathology. The disease is characterized by memory loss, caused by the degeneration and death of neuronal cells in several regions of the brain, including the hippocampus, whichContinuar Leyendo

Within the next decade, the novel coronavirus responsible for COVID-19 could become little more than a nuisance, causing no more than common cold-like coughs and sniffles. That possible future is predicted by mathematical models that incorporate lessons learned from the current pandemic on how our body’s immunity changes over time.Continuar Leyendo

Scientists at UCL have identified a new immunotherapy to combat the hepatitis B virus (HBV), the most common cause of liver cancer in the world. London, May 17, 2021.- Each year, globally, chronic HBV causes an estimated 880,000 deaths from liver cirrhosis and hepatocellular carcinoma/liver cancer (HCC). The pioneering studyContinuar Leyendo

B cells are the immune cells responsible for creating antibodies, and most B cells, known as B2 cells, produce antibodies in response to a pathogen or a vaccine, providing defense and immunity against infections. But a small subset of long-lived B cells, known as B1 cells, are quite different fromContinuar Leyendo

Curiosity is the motivational drive for exploring and investigating the unknown and making new discoveries. It is as essential and intrinsic for survival as hunger. Until recently, the brain mechanisms underlying curiosity and novelty seeking behavior were unclear. However, researchers from the Netherlands Institute for Neuroscience have now discovered aContinuar Leyendo

Epidemic. Pandemic. These terms have become second nature to us, popping up in everyday conversation, and for good reason — COVID-19 is the latest pandemic to pose a threat to humanity. Blacksburg, May 14, 2021.- But in recent months, far less attention has been paid to another widely spread problemContinuar Leyendo

Neurodegenerative diseases such as Alzheimer’s, Parkinson’s and ALS affect millions of adults, but scientists still do not know what causes these diseases, which poses a significant roadblock to developing treatments or preventative measures. Gainesville, May 08, 2021.- Recent research suggests that people with these conditions exhibit changes in the bacterialContinuar Leyendo

Next-generation gene sequencing (NGS) technologies — in which millions of DNA molecules are simultaneously but individually analyzed — theoretically provides researchers and clinicians the ability to noninvasively identify mutations in the blood stream. Identifying such mutations enables earlier diagnosis of cancer and can inform treatment decisions. Johns Hopkins Kimmel CancerContinuar Leyendo

A new study is drawing the most detailed picture yet of SARS-CoV-2 infection in the lung, revealing mechanisms that result in lethal COVID-19, and may explain long-term complications and show how COVID-19 differs from other infectious diseases. New York, May 03, 2021.- Led by researchers at Columbia University Vagelos CollegeContinuar Leyendo