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Em 2026: 6 notícias
Desde 1995: 88 notícias
Active Covid found in patients more than 230 days after onset
Publicado em 27 de janeiro de 2022
In a 38-year-old man who manifested mild symptoms of COVID-19 for 20 days, the novel coronavirus continued to be detected in his organism and to undergo mutations for 232 days. If he had not been given continuous medical care, maintained social distancing and worn a mask, he could have spread the virus throughout these seven months.
The atypical case of infection by SARS-CoV-2 was part of a study involving 38 Brazilian patients followed on a weekly basis between April and November 2020 by [...]
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Treatment with injections of zika virus destroys brain tumors in mice without causing neurological damage
Publicado em 12 janeiro 2022In 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. The scientists also injected zika into cerebral organoids, brain-like organs created in vitro using stem cells. The virus not only prevented progression of the [...]ver notícia -
Making babies: Amphibians’ known reproductive modes jumps from from 39 to 74
Publicado em 05 novembro 2021A Brazilian study described in an article published in the journal Salamandra evidences the versatility of amphibians in terms of reproductive modes: their eggs and larvae can develop in at least 74 different ways. Signed by scientists at the University of Campinas (UNICAMP) and São Paulo State University (UNESP) in Brazil, the article compiles data available in the specialized literature and collected by the authors over decades of research. In addition, it proposes [...]ver notícia -
Droughts may increase in South America by the end of the century
Publicado em 28 julho 2021If greenhouse gas emissions remain at current levels, the average temperature in South America could rise by as much as 4 °C between now and the end of the century under a worst-case scenario, making extreme weather events such as droughts, floods and wildfires more frequent and intense in the region. The prediction comes from a study by an international group of scientists, including Brazilian researchers. The study was supported by São Paulo Research Foundation – FAPESP via [...]ver notícia -
Vegan and omnivorous diets promote equivalent muscle mass gain, study shows
Publicado em 21 maio 2021Protein intake is more important than protein source if the goal is to gain muscle strength and mass. This is the key finding of a study that compared the effects of strength training in volunteers with a vegan or omnivorous diet, both with protein content considered adequate. In the study, which was conducted by researchers at the University of São Paulo (USP) in Brazil, 38 healthy young adults, half of whom were vegans and half omnivores, were monitored for 12 weeks. In addition to [...]ver notícia -
Vegan and omnivorous diets promote equivalent muscle mass gain, study shows
Publicado em 20 maio 2021Protein intake is more important than protein source if the goal is to gain muscle strength and mass. This is the key finding of a study that compared the effects of strength training in volunteers with a vegan or omnivorous diet, both with protein content considered adequate. In the study, which was conducted by researchers at the University of São Paulo (USP) in Brazil, 38 healthy young adults, half of whom were vegans and half omnivores, were monitored for 12 weeks. In addition to [...]ver notícia -
Researchers develop a technique to produce transplantable livers in the laboratory
Publicado em 05 abril 2021Researchers at the Human Genome and Stem Cell Research Center (HUG-CELL), hosted by the University of São Paulo’s Institute of Biosciences (IB-USP) in Brazil, have developed a technique to reconstruct and produce livers in the laboratory. The proof-of-concept study was conducted with rat livers. In the next stage of their research, the scientists will adapt the technique for the production of human livers in order in future to increase the supply of these organs for [...]ver notícia -
Lab-Grown Human Brain Organoids Mimic an Autism Spectrum Disorder, Help Test Treatments
Publicado em 09 dezembro 2020Most autism spectrum disorders have a complex, multifactorial genetic component, making it difficult to find specific treatments. Rett syndrome is an exception. Babies born with this form of the disorder have mutations specifically in the MECP2 gene, causing a severe impairment in brain development that primarily affects females. Yet there is still no treatment — current therapies are aimed at alleviating symptoms, but don’t address the root cause. Researchers at University of [...]ver notícia -
How plants compete for underground real estate affects climate change and food production
Publicado em 05 dezembro 2020You might have observed plants competing for sunlight — the way they stretch upwards and outwards to block each other’s access to the sun’s rays — but out of sight, another type of competition is happening underground. In the same way that you might change the way you forage for free snacks in the break room when your colleagues are present, plants change their use of underground resources when they’re planted alongside other plants. In a paper published today in [...]ver notícia -
Listening to music while driving reduces cardiac stress
Publicado em 14 novembro 2019Stress while driving is a risk factor for the development of cardiovascular disease and sudden cardiac complications such as heart attack (myocardial infarction), according to studies published in recent years. Selecting suitable driving music may be one way to mitigate this risk. A study by researchers at São Paulo State University (UNESP) in Marília, Brazil, suggests that listening to instrumental music, for example, may relieve cardiac stress. The results of the study, which [...]ver notícia