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27 notícias encontradas para "viruses"
Hepatitis E viruses mutate early during infection
Knowing how viruses change in the initial weeks of an infection can provide important information about their adaptability. Researchers from the Departments of Molecular & Medical Virology and Translational & Computational Infection Research at Ruhr University Bochum, Germany, ha
How an emerging class of tick-borne viruses escape human immune defenses
Warmer temperatures bring out ticks that spread diseases such as Lyme disease and Rocky Mountain spotted fever. But another class of emerging tick-borne pathogens—nairoviruses—is on the rise. Some nairoviruses cause high fevers and reduce organ function in people exposed to certa
Foto: cottonbro studio / Pexels
Herpes immune response linked to Alzheimer's disease
New research has demonstrated a mechanistic link between the immune response to herpesviruses—the family of viruses related to cold sores, childhood infections and mononucleosis—and an increased risk of Alzheimer's disease. A team of scientists from Cardiff University's School of
Phages could enable us to hijack vaccine immunity to kill cancer cells
Phages, viruses that infect bacteria, could be genetically manipulated to destroy cancerous cells using the immunity we have acquired from vaccines
Bacteria-killing viruses redirect vaccine immunity to destroy cancer
Phages, viruses that infect bacteria, could be genetically manipulated to destroy cancerous cells using the immunity we have acquired from vaccines
Ebola and hantavirus can start like the flu but turn deadly fast
Ebola and hantavirus can start like the flu but turn deadly fast
Two dangerous viruses are back in the spotlight, reminding health officials how quickly infectious diseases can become serious threats. Hantavirus, often linked to rodents, can cause severe heart and lung complications and has no specific treatment or vaccine, while certain strai
One tiny mutation may explain how bat viruses become human threats
One tiny mutation may explain how bat viruses become human threats
Scientists found that one tiny genetic change can completely alter how a coronavirus behaves in different species. Comparing SARS-CoV-2 with a closely related bat-only virus, they showed that a single amino-acid difference affects whether the immune system fights back or gets sup
Scientists discover hidden “footprints of death” that may help viruses spread
Scientists discover hidden “footprints of death” that may help viruses spread
Scientists have uncovered a surprising new twist in what happens when cells die. As dying cells break apart, they leave behind tiny “footprints of death” packed with newly discovered particles that help guide the immune system to clean up the remains. But researchers found that i
Oysters used as living labs reveal unexpected stability in ocean virus populations
Oysters filter seawater for food. In the process, they concentrate a wide variety of microorganisms from their environment—including bacteria and viruses—into a tiny space.
X-ray snapshots reveal how viral shells change shape as they dry out
When viruses travel through the air in tiny droplets, they can quickly start to dry out. Yet many viruses remain infectious after rehydration—something that is still not fully understood. Now, an international team of researchers has directly observed at the European XFEL how the
Scientists discover a completely different way to fight viruses
Scientists discover a completely different way to fight viruses
Researchers have uncovered an unexpected antiviral defense system in sea anemones that works very differently from the one humans use. The discovery suggests evolution developed multiple ways to combat viruses, challenging long-held ideas about how animal immune systems evolved.
Foto: Pixabay / Pexels
Hantaviruses may have co-evolved with rodents for ages, helping explain silent spread
What does a hantavirus do inside its rodent hosts? How do these viruses move through animal populations? And how is it that they cause almost no apparent symptoms in rodents, yet can be nearly fatal in humans? Specially Appointed Professor Hiroaki Kariwa has been studying hantavi