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Em 2026: 104 notícias
Desde 1995: 365 notícias
Study reveals new neuropeptide involved in controlling calorie expenditure
Publicado em 25 de novembro de 2024
An international team of researchers has discovered a new component of the peripheral nervous system that acts by increasing energy metabolism in the body. The finding paves the way for the development of simpler and cheaper drugs to control obesity and weight gain, regardless of the amount of food ingested.
In an article published in the journal Nature, researchers from the University of Oxford in the United Kingdom and the Obesity and Comorbidities Research Center (OCRC) describe where and [...]
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Light-based therapy reduces pain associated with peripheral diabetic neuropathy, study concludes
Publicado em 19 novembro 2024A study conducted at the Federal University of São Paulo (UNIFESP) in Brazil has concluded that the use of monochromatic infrared light in conjunction with conventional physical therapy is a promising alternative for the treatment of peripheral diabetic neuropathy, a type of nerve damage that most often affects the legs and feet, and one of the most frequent, insidious and incapacitating complications of diabetes. "The problem is mainly associated with the duration of diabetes [...]ver notícia -
Low-cost method removes micro- and nanoplastics from water
Publicado em 19 novembro 2024Summary of purification process: water polluted by microplastics (PET); addition of magnetic nanoparticles functionalized with polydopamine and lipase; removal of nanoparticles with microplastics using a magnet. Credit: Henrique Eisi Toma Researchers at the University of São Paulo (USP) in Brazil have developed a novel nanotechnology-based solution for the removal of micro- and nanoplastics from water. Their research is published in the journal Micron. Tiny plastic particles are [...]ver notícia -
Paper wasps study shows that body size is larger in habitats nearer the equator
Publicado em 19 novembro 2024Variation in body size of paper wasps (Polistes) analyzed in the study. Each individual in the image represents a different species. Credit: Alexandre Somavilla A study of the correlation between environmental variables such as latitude and body size in paper wasps (genus Polistes) by a group of Brazilian researchers concludes that the nearer the habitat of a species to the equator, the larger its body size. The genus is widely distributed around the world and serves as a model for [...]ver notícia -
Selenoproteins open new strategies for treating certain cancers in children
Publicado em 19 novembro 2024Graphical abstract. Credit: Molecular Cell (2024). DOI: 10.1016/j.molcel.2024.10.027 Selenoproteins are crucial for several biological functions, including the breakdown of harmful substances, immune system support, and regulating metabolic processes. However, in specific contexts, these proteins can be misused and shield cancer cells from death. One such protein, glutathione peroxidase 4 (GPX4), is vital in supporting cellular protection and cancer cell survival. "This protective [...]ver notícia -
Researchers use high-resolution images to create model that predicts landslide risk in coastal areas
Publicado em 13 novembro 2024São Sebastião, a municipality on the coast of São Paulo state in Brazil that was partially cut off from the rest of the country in February 2023 after a period of torrential rain, had more than 1,000 landslide points, according to an inventory produced by researchers at the University of São Paulo's Institute of Astronomy, Geophysics and Atmospheric Sciences (IAG-USP) and Institute of Geosciences (IGc-USP) using aerial images collected shortly after the [...]ver notícia -
Joint pain associated with depressive symptoms accelerates cognitive decline in the elderly, finds study
Publicado em 13 novembro 2024Elderly people who have symptoms of depression and moderate or severe joint pain tend to show faster cognitive decline, especially in the area of memory. This was shown by a study published in the journal Aging Mental Health. The conclusions are based on data from 4,718 participants aged 50 and older who were followed up over 12 years. The authors of the article include researchers from the Federal University of São Carlos (UFSCar) in Brazil and University College London (UCL) in the [...]ver notícia -
Multidrug-resistant strain of K. pneumoniae detected in Northeast Brazil
Publicado em 12 novembro 2024Astrain of the bacterium Klebsiella pneumoniae isolated from an 86-year-old woman with a urinary infection admitted to hospital in Brazil's Northeast region in 2022 proved resistant to all available antibiotics. The patient died 24 hours after being hospitalized. A group of researchers sequenced the bacterium's genome and compared it with a database of 48 similar sequences. Alarmingly, the results showed that the strain in question had previously been detected in the United States, [...]ver notícia -
6.95 mm toad: World’s second-smallest vertebrate discovered in Brazil
Publicado em 10 novembro 2024Researchers have discovered the world’s second-smallest vertebrate in the Atlantic Rainforest of Brazil. This tiny creature, a flea toad, is so small it can fit on the tip of your finger. Interestingly, it looks smaller than some of the known ant species. A team of scientists from the State University of Campinas in Brazil has recently discovered this new species, named Brachycephalus dacnis. This flea tod measures just 6.95 millimeters in length. A separate research team had [...]ver notícia -
Singing creature — smaller than a fingernail — found in Brazil forest. See new species
Publicado em 10 novembro 2024As researchers trudged through the valleys and trees of the Atlantic Forest in Brazil, they heard a creature calling out. They headed toward the noise, but as they got closer and closer, the sound stopped. The song belonged to a “miniaturized” animal hidden under the leaves, according to a study published Oct. 25 in the peer-reviewed journal PeerJ. Researchers collected a dozen of the creatures during field surveys between June 2021 and May 2022 and took a closer look at [...]ver notícia