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Indigenous lands in the Brazilian Amazon are under constant pressure, and deforestation of these areas has accelerated in recent years. Some of them, such as Apyterewa Indigenous Territory in Pará state, are particularly affected, endangering Brazil’s ability to meet the targets to which it is committed internationally in terms of combating deforestation and mitigating the impact of climate change. To protect the areas of the Amazon that are still intact, effective action must be [...]

Brazilian researchers have developed a computer program that locates swimming pools and rooftop watertanks in aerial photographs with the aid of artificial intelligence to help identify areas vulnerable to infestation by Aedes aegypti, the mosquito that transmits dengue, zika, chikungunya and yellow fever. The innovation, which can also be used as a public policy tool for dynamic socio-economic mapping of urban areas, resulted from research and development work by professionals at the [...]

Vaccination has changed the profile of hospitalized COVID-19 patients and people who die from the disease in Brazil. A study conducted in São José do Rio Preto, in the state of São Paulo, Brazil, reports on the start of this process. Vaccination has changed the profile of hospitalized COVID-19 patients and people who die from the disease in Brazil. A study conducted in São José do Rio Preto, in the state of São Paulo, Brazil, reports on the start of [...]

In a study conducted at the University of São Paulo’s Human Genome and Stem Cell Research Center (HUG-CELL) in Brazil, serial systemic injections of zika virus into mice with brain tumors destroyed the cancer without causing neurological damage or injuring other organs, and increased the animals’ survival rate. In a study conducted at the University of São Paulo’s Human Genome and Stem Cell Research Center (HUG-CELL) in Brazil, serial systemic injections of [...]

A group led by researchers affiliated with the Phycology Laboratory at the Federal University of São Carlos (UFSCar) in the state of São Paulo, Brazil, have discovered a new species of green microalga in a reservoir located in the northwest of the state. As a result of the discovery, microalgae of the genus Nephrocytium have been moved to an order belonging to a different taxonomic class and phylogenetically reclassified (placed in a new family). A group led by researchers [...]

Blood plasma from women with ovarian and uterine cancer can contain molecules that suggest whether they will respond well to chemotherapy or suffer a relapse, according to a study conducted by researchers in the Department of Gynecology at the Federal University of São Paulo’s Medical School (EPM-UNIFESP) in Brazil, in partnership with colleagues at the University of California Irvine (UCI) in the United States. Blood plasma from women with ovarian and uterine cancer can contain [...]

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 such as heart attacks, thrombosis (blood clotting), and stroke. Endothelium refers to the thin sheet of cells lining the walls of arteries and veins, as well as the inside of the heart. Endothelial cells release substances that control vascular relaxation and contraction, [...]

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 [...]

A water-borne fungus that has led to the extinction of several species of amphibians that spend all or part of their life cycle in water is also threatening terrestrial amphibians. In Brazil, researchers supported by FAPESP detected unprecedented mortality among a genus of tiny frogs known as pumpkin toadlets that live in the Atlantic Rainforest far from any aquatic environments. The animals were severely infected by chytrid fungus (Batrachochytrium dendrobatidis), which causes [...]