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Antarctic fungi found to be effective against citrus canker
Publicado em 13 de junho de 2018
A research team at the São Paulo State University's Bioscience Institute (IB-UNESP) in Rio Claro, Brazil, has identified 29 fungi with proven action against Xanthomonas citri, a bacterium responsible for citrus canker, an endemic disease in all citrus-producing countries. The origin of the fungi is surprising. They were isolated from samples of soil and marine sediment collected in Antarctica.
"These fungi live in isolated conditions and proliferate under inhospitable conditions including low [...]
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Research reveals new aspects of superconductivity and correlated phenomena
Publicado em 11 abril 2018Discovered accidentally over a century ago, the phenomenon of superconductivity continues to inspire a technological revolution. In 1911, while studying the behavior of solid mercury supercooled to 4 K (-269 °C), Dutch physicist Heike Kamerlingh Onnes (1853-1926) observed for the first time that certain materials conducted electricity with neither resistance nor losses at temperatures in the vicinity of absolute zero. Interest revived in the 1980s when superconductivity was experimentally [...]ver notícia -
Biomarker panel can guide treatment of brain cancer
Publicado em 10 abril 2018In an article published April 10th in the journal Cell Reports, researchers at the University of São Paulo (USP) describe a biomarker panel that could tell physicians which patients diagnosed with glioma, a type of brain cancer, will tend to progress to a more aggressive form of the disease in the event of relapse. According to principal investigator Houtan Noushmehr, a professor at USP's Ribeirão Preto Medical School (FMRP-USP), between 80% and 90% of patients diagnosed with brain cancer [...]ver notícia -
An index measures similarity between cancer cells and pluripotent stem cells
Publicado em 05 abril 2018The theory that cancer progression involves the acquisition by tumor cells of features similar to those of stem cells has gained strength in the scientific community. According to this theory, tumor cells tend to "forget" the tissue from which they originated as the disease progresses, acquiring an undifferentiated phenotype associated with heightened aggressiveness and treatment resistance. In a study whose findings were published in the journal Cell on Thursday, May 5, researchers at the [...]ver notícia -
An international study is the first large survey on epilepsy
Publicado em 04 abril 2018An international research consortium used neuroimaging techniques to analyze the brains of more than 3,800 volunteers in different countries. The largest study of its kind ever conducted set out to investigate anatomical similarities and differences in the brains of individuals with different types of epilepsy and to seek markers that could help with prognosis and treatment. Epilepsy's seizure frequency and severity, as well as the patient's response to drug therapy, vary with the part of the [...]ver notícia -
Genetic factors for most common disease in the first year of life are identified
Publicado em 26 março 2018A scientific study conducted at the State University of Campinas (UNICAMP) in São Paulo State, Brazil, has identified genetic factors associated with the severity of acute viral bronchiolitis. The study was supported by the Sao Paulo Research Foundation - FAPESP. Its results were published in the journal Gene. Principal investigator for the study and a professor at UNICAMP's Medical School (FCM-UNICAMP), José Dirceu Ribeiro recalls that bronchiolitis is the most common disease during the [...]ver notícia -
Toothpaste alone does not prevent dental erosion or hypersensitivity
Publicado em 13 março 2018The rising prevalence of dental erosion and dentin hypersensitivity has led to the emergence of more and more toothpastes on the market that claim to treat these problems. While no such toothpaste existed 20 years ago, today, many brands with different attributes are being offered. However, a study conducted at the University of Bern in Switzerland with the participation of a researcher supported by a scholarship from the São Paulo Research Foundation - FAPESP showed that none of the nine [...]ver notícia -
Current deforestation pace will intensify global warming, study alerts
Publicado em 06 março 2018The global warming process may be even more intense than originally forecast unless deforestation can be halted, especially in the tropical regions. This warning has been published in Nature Communications by an international group of scientists. "If we go on destroying forests at the current pace - some 7,000 km² per year in the case of Amazonia - in three to four decades, we'll have a massive accumulated loss. This will intensify global warming regardless of all efforts to reduce [...]ver notícia -
Brazilian study discovers six new species of silky antieaters
Publicado em 26 fevereiro 2018Since the pioneering description made in 1758 by Swedish naturalist and father of taxonomy Carl Nilsson Linnaeus (1707-1778), there was officially one single silky anteater species. This short-snouted, pigmy-sized anteater would then be known for its scientific name, Cyclopes didactyla, after its inclusion on the 10th edition of Systema Naturae, Linnaeus' magnum opus responsible for describing more than 4,2 animal species. It is found in tropical forests in South and Central America, as well [...]ver notícia -
Model based on hydrothermal sources evaluate possibility of life Jupiter's icy moon
Publicado em 23 fevereiro 2018Jupiter's icy moon Europa is a major target of astrobiology research in light of the possibility that it offers a habitable environment in the Solar System. Under its ice crust, estimated to be 10 km thick, is an ocean of liquid water of over 100 km deep. A huge source of energy deriving from gravitational interaction with Jupiter keeps this water warm. Theoretical research to evaluate the microbial habitability of Europa using data collected from analogous environments on Earth has been [...]ver notícia