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Regular aerobic exercise may significantly reduce Alzheimer’s disease markers, enhancing brain health and offering hope for prevention strategies. Regular aerobic exercise could significantly reduce disease markers associated with Alzheimer’s, new research led by scientists at the University of Bristol (UK) and the Federal University of São Paulo (Brazil) has found. The findings provide new hope in the battle against this devastating disorder. Published in the journal [...]

Flea toads, as some species in the genus Brachycephalus are known, are less than 1 cm long in adulthood. Its size is far smaller than a fingernail or a 50 cent (50p) coin. The name of the new species, B. dacnis, pays tribute to Project Dacnis, a conservation, research and education NGO that maintains private areas of Atlantic Rainforest, including the one where the animal was found, in Ubatuba, on the coast of São Paulo state. “There are small toads with all the [...]

Brazilian researchers reconstructed the tree of life, revealing significant eukaryotic diversity 800 million years ago, predating the Cambrian explosion. About 800 million years ago (mya), before the supercontinent Pangea formed, the Earth was more diverse than classical theory suggests. By reconstructing the tree of life from the evolutionary history of amoebas and the ancestors of algae, fungi, plants and animals, Brazilian researchers have created a scenario in which several different [...]

A major bivalent COVID-19 vaccine induces production of neutralizing antibodies against the coronavirus that circulated at the start of the pandemic as well as subvariants of omicron, albeit less abundantly, according to a Brazilian study reported in the Journal of Medical Virology. The study confirmed the vaccine’s effectiveness and its importance to control of the disease, while also showing that, more than three years after the first application of a COVID-19 vaccine in Brazil, the [...]

A single-dose dengue vaccine produced by Butantan Institute in São Paulo state (Brazil) prevents development of the disease in 79.6% of those vaccinated, according to an article published today (February 1) in The New England Journal of Medicine. Called Butantan-DV, the vaccine contains attenuated versions of all four dengue virus serotypes. The results of the ongoing Phase 3 trial show that it is safe and effective for all age groups between 2 and 59, and for people with or without a [...]

BRAZIL GRAPPLES WITH DENGUE CRISIS, VACCINE SHORTAGE WOES. Brazil faces a significant challenge with an unprecedented surge in dengue, exacerbated by hot rainy seasons and urbanization. The country’s vaccine supply is insufficient, with only 3.3 million people expected to be vaccinated this year out of a population exceeding 220 million. Efforts to develop a locally produced vaccine, promising cheaper and more effective protection, won’t be available until 2025. Meanwhile, [...]

Mass migration takes place between December and April on Trindade Island, the easternmost point of Brazil located in the Atlantic about 1,200 km from the coastal city of Vitória, capital of Espírito Santo state. Hundreds of Johngarthia lagostoma land crabs descend steep rocky trails from the upland peaks to the shore, where they mate and release larvae into the ocean. The larvae develop into juveniles, which undertake an even more challenging journey back up to the heights in [...]

A female White-eared opossum (Didelphis albiventris) found dead in 2021 in Bosque dos Jequitibás Park in the center of Campinas, one of the largest cities in São Paulo state, Brazil, died from rabies meningoencephalitis, according to a group of researchers at the University of São Paulo (USP) and Adolfo Lutz Institute (IAL), the regional reference laboratory, working with health professionals affiliated with public institutions in São Paulo city and [...]

A gelatinous animal with a diameter of about 10 cm and a red stomach resembling the Cross of St George when seen from above. This is Santjordia pagesi, a newly described species of medusa. Medusae are a type of free-swimming, umbrella-shaped jellyfish with a reduced stalk. The new species is described in an article published in the journal Zootaxa. The study was conducted by an international group of researchers that included a Brazilian scientist supported by FAPESP. The scientist in [...]