Veículo
Mazenz (EUA)
Em 2025: 0 notícias
Desde 1995: 8 notícias
Physical activity reduces cardiovascular risk in rheumatic patients
Publicado em 27 abril 2021
The risk of developing atherosclerosis – a narrowing of the arteries as cholesterol plaque builds up, leading to obstruction of blood flow – is higher for people with autoimmune rheumatic diseases than for the general population. As a result, they are more likely to have heart attacks and other cardiovascular disorders.
The good news, according to a new study published in Rheumatology, is that regular exercise is a powerful weapon against vascular dysfunction in these patients.
In [...]
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Why it is harder for Brazilians of African descent to find bone marrow donors
Publicado em 01 fevereiro 2021According to a study published in Frontiers in Immunology, the reason is their genetic heterogeneity and lack of proportional representation in the Brazilian bone marrow bank. Credit: Diogo Meyer A paper by a multidisciplinary team of scientists affiliated with various Brazilian institutions, including the University of São Paulo (USP) and the National Cancer Institute (INCA), shows that people of African descent are less likely to find a donor in the National Register of Voluntary Bone [...]ver notícia -
Researchers discover a novel family of toxins used in bacterial competition
Publicado em 18 setembro 2020Toxic protein inhibits cell wall synthesis in rival bacteria. Discovery helps explain how pathogens cause imbalances in established microbial communities and could pave the way to the development of novel anti-microbial compounds. By André Julião | Agência FAPESP – Researchers at the University of São Paulo (USP) in Brazil have characterized a novel family of anti-bacterial toxins present in bacteria, including Salmonella enterica. This species uses toxic [...]ver notícia -
Brazilians start to unravel the mystery of North American insect bioluminescent systems
Publicado em 13 setembro 2020Researchers isolated molecules present in the larvae of a blue light-emitting fungus gnat that inhabits the Appalachians; the study will help elucidate human diseases and could lead to novel biotech applications Molecules belonging to an almost unknown bioluminescent system found in larvae of the fungus gnat Orfelia fultoni (subfamily Keroplatinae) have been isolated for the first time by researchers at the Federal University of São Carlos (UFSCar) in the state of São Paulo, [...]ver notícia -
Consortium of Brazilian researchers completes sequencing of native stingless bee’s genome
Publicado em 31 agosto 2020Frieseomelitta varia is a docile species of economic interest as a pollinator; Its workers are sterile, and some of its genetic sequences are identical to those found in other eusocial bees, pointing to the conservation of ancestral traits A consortium of researchers funded by Brazil’s National Council for Scientific and Technological Development (CNPq) and FAPESP has sequenced the genome of Frieseomelitta varia, a native stingless bee (common name: marmelada). The feat extends [...]ver notícia -
Researchers validate rapid tests to detect dengue, Zika, yellow fever and other viruses
Publicado em 22 agosto 2020There are more than 70 species of flavivirus, and many cause diseases in humans and animals, including dengue, Zika and yellow fever viruses. A novel flavivirus identification test that is both fast and sensitive has been validated in Brazil by Mariana Sequetin Cunha and collaborators at the Adolfo Lutz Institute, a leading epidemiological surveillance laboratory that reports to the São Paulo state government. An article on the topic has been published in Archives of Virology. The [...]ver notícia -
Wearable Sweat Sensor Made from Microbial Nanocellulose
Publicado em 18 agosto 2020Researchers in Brazil have developed a wearable sweat sensor made from microbial nanocellulose. The natural polymer provides a breathable interface with the underlying skin and allows sweat to travel through for electrochemical analysis using printed electrodes. The system can measure a wide variety of metabolites and biomarkers present in sweat, and could be useful for monitoring conditions such as diabetes. Wearable sensors are developing apace, and hold significant promise in monitoring [...]ver notícia -
Researchers explore pollen fertilization mechanisms
Publicado em 12 agosto 2020A group of researchers from four countries has worked out exactly how a pollen tube, the plant cell that emerges from a grain of pollen, grows up to a thousand-fold to reach an ovule deep inside the flower. The key to this growth is an inflow and outflow of protons that creates electrical activity at the cell membrane and makes the cell grow. The results of the study will help scientists understand an array of related phenomena, such as seed production, the growth of fungi, and even how neurons [...]ver notícia