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ScienceBlog
Em 2025: 1 notícias
Desde 1995: 73 notícias
How exercise preserves physical fitness during aging
Publicado em 08 janeiro 2023
Proven to protect against a wide array of diseases, exercise may be the most powerful anti-aging intervention known to science. However, while physical activity can improve health during aging, its beneficial effects inevitably decline. The cellular mechanisms underlying the relationship among exercise, fitness and aging remain poorly understood.
In a paper published in the Proceedings of the National Academy of Sciences, researchers at Joslin Diabetes Center investigated the role of [...]
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Researchers build light source with two entangled light beams
Publicado em 03 janeiro 2023Scientists are increasingly seeking to discover more about quantum entanglement, which occurs when two or more systems are created or interact in such a manner that the quantum states of some cannot be described independently of the quantum states of the others. Scientists are increasingly seeking to discover more about quantum entanglement, which occurs when two or more systems are created or interact in such a manner that the quantum states of some cannot be described independently of the [...]ver notícia -
Effects of antidepressants in pregnancy are poorly understood
Publicado em 14 dezembro 2022Depression affects 10%-16% of pregnant women worldwide. Most get better with the help of antidepressant drugs. Although the safety of using antidepressants during pregnancy is endorsed by science, their effects on fetal neurodevelopment are poorly understood and should be studied with advanced techniques such as genomics. This is the main conclusion reached by a group of Brazilian researchers in a review of more than 100 scientific articles on fetal exposure to these drugs, especially [...]ver notícia -
Vitamin D deficiency increases risk of losing muscle strength by 78%
Publicado em 14 dezembro 2022Vitamin D plays an important role in the regulation of calcium and phosphorus absorption by the organism. It also helps keep the brain and immune system working. Researchers at the Federal University of São Carlos (UFSCar) in Brazil and University College London (UCL) in the United Kingdom have now shown that vitamin D supplementation reduces the risk of dynapenia in older people by 78%. Dynapenia is an age-associated loss of muscle strength. It can be partially explained by muscle [...]ver notícia -
Infection of fat may contribute to severe COVID-19
Publicado em 06 dezembro 2022Experiments conducted in Brazil by researchers at the State University of Campinas (UNICAMP) and the University of São Paulo (USP) showed that visceral fat – fat around the liver, intestines and other organs, considered a risk factor for cardiovascular disease, diabetes and high blood pressure – contributes more to severe COVID-19 than subcutaneous fat (under the skin, as in “love handles”). To reach this conclusion, Marcelo Mori, a professor at UNICAMP’s [...]ver notícia -
Here’s what could cause collapse of great Atlantic circulation system
Publicado em 18 outubro 2022The Atlantic meridional overturning circulation (AMOC), a system of ocean currents that carry warm water from the tropics into the North Atlantic and transport cold water from the northern to the southern hemisphere, is a fundamental mechanism for the regulation of Earth’s climate. The conveyor belt has collapsed in the past owing to natural factors. The most recent collapse played a key role in the last deglaciation. AMOC is now threatened by global warming, scientists have shown, and a [...]ver notícia -
Discovery and naming of Africa’s oldest known dinosaur
Publicado em 01 setembro 2022An international team of paleontologists led by Virginia Tech has discovered and named a new, early dinosaur. The skeleton — incredibly, mostly intact — was first found by a graduate student in the Virginia Tech Department of Geosciences and other paleontologists over the course of two digs, in 2017 and 2019. The findings of this new sauropodomorph — a long-necked dinosaur — newly named Mbiresaurus raathi were been published today in the journal Nature. The [...]ver notícia -
Cold temps may help to combat obesity by reducing inflammation
Publicado em 28 junho 2022More than 40 percent of American adults have obesity, a complex condition that can increase the risk of diabetes, cardiovascular disease and certain cancers. One mechanism by which obesity can lead to other health problems is by causing low-grade chronic inflammation, the accumulation of immune cells in insulin-sensitive tissues. Scientists hypothesize that reversing – known as resolving – this chronic inflammation could prevent the onset of obesity-related diseases including [...]ver notícia -
Scientists use human breast milk to treat prolonged COVID-19
Publicado em 27 junho 2022Researchers at the University of Campinas (UNICAMP) in São Paulo state, Brazil, have resorted to a thoroughly unconventional method to treat COVID-19 in a patient with a rare genetic disease that makes her immune system unable to combat viruses and other pathogens. She was instructed to take 30 milliliters of breast milk every three hours for a week. The breast milk was donated by a woman who had been vaccinated against SARS-CoV-2. After testing positive for 120 days by RT-PCR, the [...]ver notícia -
Capybara belly may aid biofuel development
Publicado em 03 maio 2022Converting agroindustrial waste into molecules of interest to society, such as biofuels and biochemicals, is one of the ways to mitigate dependence on oil and other fossil fuels. As one of the world’s largest producers of plant biomass, Brazil is well-placed to lead this transition, but lignocellulosic raw materials (containing lignin, hemicellulose and cellulose) are hard to deconstruct, or (more technically put) recalcitrant to microbial and enzymatic degradation. Scientists in [...]ver notícia