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Site ScienceDaily publica reportagem sobre o trabalho de pesquisadores do Brasil e dos Estados Unidos que desenvolveram uma molécula que, quando injetada na corrente sanguínea de camundongos, se liga apenas aos vasos sanguíneos do cérebro. A técnica permitiu um mapeamento inédito do sistema vascular cerebral, abrindo caminho para a criação de novos exames de imagem do órgão. Realizado no Instituto de Química da USP (IQ-USP) com apoio da FAPESP por meio do programa Jovens Pesquisadores, Bolsa de Iniciação Científica e Auxílio Regular à Pesquisa, o estudo foi publicado no periódico Proceedings of the National Academy of Sciences (PNAS)

COLUMBUS, Ohio - The tube-dwelling anemone is an ancient sea creature that resembles a prehistoric flower. The animals live slow, long and predictable lifestyles and look fairly similar from species to species. It'd be easy to use the word "simple" when considering this relative of coral and jellyfish. But wait - not so fast. New research on tube anemones is challenging everything that evolutionary biologists thought they knew about sea animal genetics. The mitochondrial DNA of [...]

A review article evaluated several compounds with therapeutic potential against gastric tumors. Curcumin is widely used to impart color and flavor to food, but scientists have discovered that this yellow powder derived from the roots of the turmeric plant (Curcuma longa) can also help prevent or combat stomach cancer. The study by researchers at the Federal University of São Paulo (UNIFESP) and the Federal University of Pará (UFPA) in Brazil identified possible therapeutic [...]

A genetic and computational analysis of birds suggests that the Andean and Atlantic tropical forests, which are now almost a thousand kilometers apart, were connected via the Cerrado in the distant past The tropical forests of the Andes and Brazil's Atlantic Rainforest biome are separated by almost 1,000 km of drier areas with open vegetation in the Chaco, Cerrado (Brazilian savanna), and Caatinga (Brazilian semiarid) biomes. Today, these tropical forests are not connected, but the fact [...]

Researchers at the University of São Paulo (USP) in Brazil have discovered that growth hormone (GH), which stimulates skeletal maturation and linear bone growth, as well as helping maintain tissue and organs throughout life, also acts directly on the brain to conserve energy when the body loses weight. A paper on the discovery has just been published in the journal Nature Communications. "Growth hormone has been known for decades, but our discovery shows it does a lot more than was [...]

A new technique for the decontamination of organs before transplantation using ultraviolet and red light irradiation has been developed by Brazilian and Canadian researchers and is described in an article published in the journal Nature Communications. The research is supported by São Paulo Research Foundation - FAPESP and has been partially conducted at the Optics and Photonics Research Center (CEPOF), hosted by the University of São Paulo (USP) at São Carlos in São Paulo State [...]

In the past three decades, almost 4,000 planet-like objects have been discovered orbiting isolated stars outside the Solar System (exoplanets). Beginning in 2011, it was possible to use NASA's Kepler Space Telescope to observe the first exoplanets in orbit around young binary systems of two live stars with hydrogen still burning in their core. Brazilian astronomers have now found the first evidence of the existence of an exoplanet orbiting an older or more evolved binary in which one of the [...]

Antimicrobial and antifungal resistance, which describe the ability of bacteria and other pathogens to resist the effects of drugs to which they were once sensitive, is a major public health problem worldwide. A study published recently in the journal Nature Communications suggests that the solution may come from the tiny bodies of insects, or more accurately, from the microbiota that they host. This innovative hypothesis was first proposed by Brazilian and US researchers as part of a [...]

During the period in which the papaya (Carica papaya) is ripening, its cell walls separate, making the tissue softer and more digestible because the cell contents become accessible and the sucrose in the fruit is more easily extracted. Sugarcane roots have recently been found to undergo a similar process. Their cell walls are modified during development to form gas-filled intercellular spaces in a type of tissue known as aerenchyma. "Aerenchyma is very common in crops grown in flooded fields, [...]