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Research on the roundworm species C. elegans has demonstrated that disruptions in the transfer of RNA between cells across various tissues can lead to a shortened lifespan. Cells in various tissues interact by sharing RNA molecules. A study conducted by scientists from the State University of Campinas (UNICAMP) in Brazil, using the roundworm species Caenorhabditis elegans, discovered that disruptions in this method of communication can lead to a reduced lifespan for the organism. The study [...]

Bone cavities, known as air sacs, emerged in precursors of long-necked dinosaurs roughly 225 million years ago, as evidenced by a specimen unearthed in Rio Grande do Sul, South Brazil.   The research also indicates that air sacs did not evolve as linearly as scientists believe. Credit: Márcio L. Castro Bone cavities called air sacs emerged in the precursors of long-necked dinosaurs around 225 million years ago, according to the analysis of a specimen found in Rio Grande do [...]

An article published in npj Aging reveals that natural production of auto-antibodies increases with age, and that infection by SARS-CoV-2 can exacerbate production of auto-antibodies relating to auto-immune diseases, helping to explain why aging increases the chances of developing severe COVID-19. The study also discovered some of the factors that associate the severe form of the disease with blood clotting disorders such as thrombosis. “These findings open the door to a better [...]

In recent decades, scientists have sought solutions to improve the sustainable production of biofuels from renewable sources. The latest advance in this field was announced at the end of May by Brazilian researchers and could boost the production of sustainable biofuels for aviation and maritime shipping. “After three and a half years of research, we identified an enzyme that can replace the traditional catalysts used in thermochemical routes for the production of aviation [...]

Researchers in Brazil and the UK found a way to turn recycled coffee pods into 3D-printed conductive materials that can be used to create caffeine detectors. With that, they demonstrated one of the many possibilities of using 3D printing as part of a circular economy. In a circular economy, products don’t become waste, but get reused for other purposes. And being a circle, you can start at any point. So let’s start with the part that most people will be familiar with: coffee [...]

Researchers at the University of São Paulo (USP) in Brazil have developed a kraft paper-based electrochemical sensor that can detect traces of pesticides in fruit and vegetables in real time when coupled to an electronic device. In an apple or cabbage, for example, it can detect carbendazim, a fungicide widely used in Brazil despite being banned. The results are reported in an article published in the journal Food Chemistry. “To find out whether a food sample contains traces [...]

Research led by scientists at the University of São Paulo (USP) in Brazil has found that the coronavirus that causes COVID-19 can be detected in tears collected by swabbing. A swab is an absorbent cotton pad on a flexible rod used to clean wounds, apply medication and take specimens. The researchers analyzed samples from patients diagnosed with the disease by conventional methods and admitted to the Hospital for Rehabilitation of Craniofacial Anomalies (HRAC) run by the Bauru Dental [...]

University of California San Diego (UCSD) study uses lab-grown human brain tissue to identify neural abnormalities in Pitt-Hopkins Syndrome and test gene therapy tools. In a study published on May 02, 2022, in the journal Nature Communications, scientists at the University of California San Diego School of Medicine used human brain organoids to discover how a genetic mutation associated with a severe form of autism disrupts neural development. Using gene therapy tools to recover the [...]

In a 38-year-old man who manifested mild symptoms of COVID-19 for 20 days, the novel coronavirus continued to be detected in his organism and to undergo mutations for 232 days. If he had not been given continuous medical care, maintained social distancing and worn a mask, he could have spread the virus throughout these seven months. The atypical case of infection by SARS-CoV-2 was part of a study involving 38 Brazilian patients followed on a weekly basis between April and November 2020 by [...]