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The Amazon rainforest's carbon emissions doubled in 2019 and 2020, as a decline in environmental policing under Brazilian ex-president Jair Bolsonaro led to a surge in destruction of the increasingly fragile region, researchers reported Wednesday. The world's biggest rainforest is a vital buffer against climate change, but studies show it has started emitting more carbon than it absorbs, pushed to a dangerous "tipping point" by deforestation and fires -- mainly for cattle [...]

Sao Paulo acogerá en 2023 el primer Instituto Pasteur de Brasil, con el objetivo de trabajar para prevenir futuras pandemias, entre otras investigaciones, acordaron este viernes el centro científico y autoridades brasileñas. Dirigentes del laboratorio francés y del Estado brasileño de Sao Paulo firmaron en París la creación de este nuevo Instituto Pasteur, que retomará el trabajo de una plataforma de cooperación ya existente con [...]

There are few places on Earth as isolated as Trindade island, a volcanic outcrop a three- to four-day boat trip off the coast of Brazil. So geologist Fernanda Avelar Santos was startled to find an unsettling sign of human impact on the otherwise untouched landscape: rocks formed from the glut of plastic pollution floating in the ocean. Santos first found the plastic rocks in 2019, when she traveled to the island to research her doctoral thesis on a completely different [...]

Home / Health / Study helps understand why obesity increases risk of cardiovascular complications in COVID-19   Health 5 minutes read A study analyzed data from 109 patients hospitalized owing to acute COVID-19, but not in a critical condition. Credit: UFSCar In COVID-19 patients, obesity is the factor most associated with the development of endothelial dysfunction, a condition in which the blood vessels become unable to contract and relax adequately, increasing the risk of events [...]

Researchers who analyzed data for São Paulo state, Brazil, found the highest rates of newborn mortality from asphyxia in cities in the south, southeast and north of the state between 2004 and 2013. They cross-tabulated these results with economic data and detected a combination of high mortality with low per capita gross domestic product (GDP) in 31 of the cities. Neonatal asphyxia correlates highly with low-quality antenatal and postpartum care. These are the main findings of a study [...]

Yellow fever is a non-contagious viral disease with two transmission cycles, sylvatic (in wild animals) and urban. Sylvatic yellow fever circulates among monkeys, and in Brazil is transmitted by mosquitoes of the genera Haemagogus and Sabethes, which bite an infected monkey and then infect others. Urban yellow fever circulates among humans and is transmitted by the mosquito Aedes aegypti (human-mosquito-human). Brazil has had no urban yellow fever cases since 1942, but the sylvatic version can [...]

Cardiopulmonary exercise testing (CPET), also known as ergospirometry, can be used for early detection of respiratory disorders in overweight and obese individuals. This is the main finding of a study by Brazilian researchers who set out to assess the influence of obesity on the physiological responses obtained in CPET. CPET combines a conventional ergometric test with analysis of expelled air to obtain measurements of pulmonary oxygen uptake (VO 2), carbon dioxide production (VCO 2), [...]

Recipients of liver transplants who contracted COVID-19 recovered faster with less severe inflammation than heart or kidney transplant recipients, and some even did better than non-transplant patients, according to a study conducted at Hospital das Clínicas (HC), the hospital complex run by the University of São Paulo's Medical School (FM-USP) in Brazil. An article describing the study and its main results is published in the journal Transplantology. The researchers analyzed [...]

A review article published in the journal Frontiers in Physiology by researchers affiliated with the Federal University of São Paulo (UNIFESP) in Brazil discusses the mechanisms whereby SARS-CoV-2 damages the kidneys, potentially serving as a basis for further research in pursuit of treatments to prevent severe renal problems and even chronic kidney disease in COVID-19 patients. The study shows that interaction with angiotensin-converting enzyme 2 (ACE2) not only enables the virus to [...]