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Em 2026: 320 notícias
Desde 1995: 3030 notícias
Research: High Blood Pressure Stiffens Bronchi, Limits Breathing
Publicado em 16 de outubro de 2024
High blood pressure (hypertension) causes thickening of the blood vessels and hardening of the arteries (arteriosclerosis). A study conducted by Brazilian researchers has shown for the first time that a similar phenomenon occurs in the lungs. High blood pressure hardens the bronchi and increases airway resistance, impairing respiratory capacity.
The study sample comprised 731 men and women over 60, both with and without high blood pressure. It was designed to investigate the effects of [...]
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Research Sheds Light on Viral Infection Pain
Publicado em 15 outubro 2024An article published in the journal Brain, Behavior, and Immunity reports the findings of a study by researchers based in Brazil, the United States and South Korea who set out to understand how viral infections cause pain and to contribute to the search for novel ways of relieving it. The article shows that a channel known to mediate pain can be activated when an immune system sensor known as STING (stimulator of interferon genes) recognizes certain nucleic acids, such as viral DNA. [...]Mirage News (Austrália) -
A novel approach to understanding protein compartmentalization
Publicado em 14 outubro 2024In physics, a system composed of two substances can be modeled in accordance with classical mixture theory, which considers the fraction corresponding to each constituent and the interactions among constituents. Examples include the coexistence of high- and low-density phases in supercooled water and the coexistence of metal puddles in an insulating matrix in the Mott metal-insulator transition. Motivated by this kind of consideration, researchers at São Paulo State University (UNESP) [...]News Medical (Austrália) -
Proteins Form Droplets, Compartmentalize in Cells: Study
Publicado em 11 outubro 2024In physics, a system composed of two substances can be modeled in accordance with classical mixture theory, which considers the fraction corresponding to each constituent and the interactions among constituents. Examples include the coexistence of high- and low-density phases in supercooled water, and the coexistence of metal puddles in an insulating matrix in the Mott metal-insulator transition. Motivated by this kind of consideration, researchers at São Paulo State University [...]Mirage News (Austrália) -
Brazilian Study Finds Targets for Visceral Leishmaniasis
Publicado em 11 outubro 2024Researchers at the Federal University of São Carlos (UFSCar), the State University of Campinas (UNICAMP) and the University of São Paulo (USP) in Brazil have characterized for the first time a class of proteins present in the parasite Leishmania infantum and involved in regulating its cell cycle. In an article published in PLOS Pathogens, they describe potential pharmaceutical targets for the treatment of visceral leishmaniasis. Existing therapeutic strategies are [...]Mirage News (Austrália) -
Climate Change Shifts Methane Levels in Amazon
Publicado em 10 outubro 2024Extreme temperatures and humidity levels (excessive rain or drought) projected for the Amazon in the context of climate change may increase the volume of methane-producing microorganisms in flooded areas and reduce potential uptake of this greenhouse gas in upland forests by 70%, with global impacts, according to a study conducted by researchers at the University of São Paulo (USP) in Brazil. An article reporting their findings is published in the journal Environmental [...]Mirage News (Austrália) -
Environmental Factors Outweigh Ecology in S.E. Brazil
Publicado em 09 outubro 2024Sea surface temperature, wave energy and freshwater discharge from rivers influence the abundance and size of the marine organisms that inhabit rocky shores along the coast of Southeast Brazil more than ecological processes such as competition and predation. In areas where the water is colder, such as the Lakes Region (Região dos Lagos) in Rio de Janeiro state, marine organisms are 25%-100% larger than in areas where it is warmer, such as the coast of São Paulo state. These [...]Mirage News (Austrália) -
Life on Earth was far more diverse 800M year ago
Publicado em 08 outubro 2024Around 800 million years ago, Earth was teeming with a greater diversity of life than classical theories suggest. A new study from Brazilian researchers has shed light on this period, revealing that various lineages of species, including the ancestors of algae, fungi, plants, and animals, were already present. The research findings, published in 'Proceedings of the National Academy of Sciences of the United States of America (PNAS)', challenge the traditional understanding of [...]Space Daily (Austrália) -
How dinosaurs’ extinction helped ants become farmers
Publicado em 08 outubro 2024When a huge asteroid hit Earth 66 million years ago, it wiped out the dinosaurs and drastically changed the planet. While the disaster caused plants and animals to die in massive numbers, it also created a new opportunity for ants to become some of the earliest farmers on Earth, millions of years before humans. The asteroid impact led to a low-light environment where fungi, which feed on dead plants and animals, could thrive. These conditions were perfect for a group of ants [...]KSR - knowRidge Science Report (Austrália) -
Asteroid that doomed dinosaurs created ant agriculture
Publicado em 04 outubro 2024BATON ROUGE, La. — Humans began farming thousands of years ago, but a new study co-authored by two LSU professors says ants had us beat by millions of years. LSU AgCenter mycologist Vinson P. Doyle and LSU Department of Biological Sciences professor Brant C. Faircloth lent their combined expertise to a study led by Smithsonian Institution entomologist Ted Schultz, which demonstrates that ants began farming fungi after an asteroid struck Earth 66 million years ago, causing a global mass [...]Space Daily (Austrália)