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A simple imaging exam capable of assessing myocardial deformation during contraction has emerged as a promising tool for predicting the risk of cardiac complications in patients with chronic Chagas disease. The study, conducted by researchers at the University of São Paulo (USP) in Ribeirão Preto in partnership with researchers from Duke University and Yale (both in the United States), highlights the global longitudinal strain (GLS) index—already used in other diseases [...]

The very first humans millions of years ago may have been inventors, according to a discovery in northwest Kenya. Researchers have found that the primitive humans who lived 2.75 million years ago at an archaeological site called Namorotukunan used stone tools continuously for 300,000 years. Evidence previously suggested that early human tool use was sporadic: randomly developed and quickly forgotten. The Namorotukunan find is the first to show that the technology was passed down [...]

A tiny insect from the Amazon is raising big questions for scientists. Researchers in Brazil have discovered a new strain of Bartonella bacteria living in local sand flies. This genus is infamous for causing Oroya fever, or “Peruvian wart,” a deadly disease still present in parts of the Andes. Early DNA analysis shows the Brazilian strain shares genetic traits with its dangerous relative in Peru. While there’s no proof yet that it makes people sick, experts warn it deserves close [...]

Brazilian researchers have developed a low-cost, portable biosensor that can quickly identify a protein whose altered levels are associated with psychiatric disorders, such as depression, schizophrenia, and bipolar disorder. When it becomes commercially available in the future, it may contribute to early detection, which is essential for treating and monitoring patients' clinical conditions. Subscribe to our newsletter for the latest sci-tech news updates. The biosensor is the result of [...]

Amid the preparatory discussions for COP30, which also involve health-related topics, a study contributes to our understanding of the relationship between deforestation and the spread of malaria in the Legal Amazon. This region encompasses all nine Brazilian states in which the Amazon biome is found and was established by the federal government for regional development purposes. The study shows that intermediate forest cover with 50% deforestation increases human cases of the disease and [...]

by FAPESP A study conducted by researchers at the Center for Redox Processes in Biomedicine (Redoxoma) has shown that ATP-sensitive mitochondrial potassium channels (MitoK ) are involved in both the development of brown fat cells and the activation of mitochondrial uncoupling in these cells, a process that dissipates energy in the form of heat. "We discovered that for brown fat cells to produce heat efficiently, the mitochondrial potassium channel must be closed," explains Osvaldo [...]

Some ancient stony corals were able to survive extreme environmental changes, which suggests that some modern species could also possess some resilience to the effects of climate change, according to research published in Nature. Stony corals are crucial to the framework of many marine ecosystems but have come under threat in recent years from changes to their environments due to global climate change. Understanding the history of these species and how they withstood previous long-term [...]

A plant compound found in apples, figs and guava could one day replace antibiotics in treating gum disease, according to a new study. Scientists from São Paulo State University's Araraquara School of Dentistry in Brazil tested morin — a naturally occurring compound extracted from the peels and leaves of certain fruits and vegetables — on bacterial biofilms that mimicked gum disease. In the lab studies, they found that the morin-based powder showed antimicrobial, anti-inflammatory [...]

By Will Dunham WASHINGTON (Reuters) -The rings of Saturn are among the wonders of our solar system, with a diameter of roughly 175,000 miles (280,000 kilometers) as they encircle the giant planet. But smaller celestial bodies in the solar system also boast ring systems that are impressive in their own right, even if their scale is not as grand. Scientists said they have observed for the first time a ring system in the process of formation and evolution, consisting of four rings and [...]