Tag: "shock" at biology news

Antioxidant overload may underlie a heritable human disease

...stress response, including higher activity of heat shock proteins that have been documented in human heart failure, Benjamin explained. Such stress responses yield reactive oxygen species, triggering antioxidative pathways to kick in. In the diseased animals, however, that pathwayin which oxidized glutathi...

Nanotechnology helps scientists make bendy sensors for hydrogen vehicles

...ght and increases their mechanical flexibility and shock resistance. The sensors are also able to be wrapped around curved surfaces, and this proves useful in many applications, notably in vehicles, aircraft and portable electronics. The leakage of hydrogen caused by tiny pinholes in the pipe of a space ...

Gene expression pattern could lead to improved treatment of pediatric septic shock

...proved diagnosis and treatment of pediatric septic shock still a serious public health problem despite tod...ze samples from 15 control patients without septic shock and 42 patients with septic shock, including nine fatal cases. Researchers at Cincinnati Children'...

N.C. A&T food scientist develops process for allergen-free peanuts

...ans, and causing 100 150 deaths from anaphylactic shock annually and many more hospitalizations. In industrialized nations, the allergy has been rapidly increasing in children, for causes that are not entirely understood. One study showed that between 1997 and 2002, peanut allergies in children doubled in...

MIT IDs mechanism behind fear

...tting go--or extinguishing--the memory of the foot shock and continued to freeze in fear. Conversely, in mice whose Cdk5 activity was inhibited, the bad memory of the shocks disappeared when the mice learned that they no longer needed to fear the environment where the foot shocks had once occurred. "In...

CU researchers discover evidence of very recent human adaptation

...tion and development, immune system genes and heat shock genes. The gene scan method also detected selection in a gene involved in digestion of lactose, an enzyme found in milk. Prior to animal domestication, humans lost the ability to digest milk after infancy. But, as humans migrated and domesticated ani...

Other highlights in JNCI, June 12

...roperties, appears to disrupt the function of heat shock protein 90 (Hsp90), which cancer cells may need to grow. Heat shock proteins are expressed in response to higher temperatures and help prevent disruptions in protein fo...

American Chemical Society's Weekly PressPac -- May 30, 2007

...explosives has concluded that the materials are so shock sensitive apt to detonate if struck or heated that the legendarily touchy nitroglycerin seems a pillar of stability by comparison. Conducted by Thomas M. Klaptke and colleagues in Germany, the study is scheduled for the May 30 issue of the Journal...

New insights into the neural basis of anxiety

...xample a tone, is always followed by an electrical shock comes to associate the two and freezes with fear whenever it hears the tone even if the shock is not delivered. But in real life the situation is not always so clear; a stimulus will only someti...

Engineered protein effective against Staphylococcus aureus toxin

...er potent S. aureus enterotoxins include the toxic shock syndrome toxin. These enterotoxins are classed ... cases the powerful immune response leads to toxic shock and death. The research team, led by University of Illinois professor of biochemistry David M. Kra...

Dinosaur hearing, listening to muscle noise, quieter cubicles

... instruments and a "ping-pong cannon" that creates shock waves as it shoots balls at high speeds. On Tuesday afternoon, Bill Strong of Brigham Young University ( william_strong@byu.edu ) will present a mini-concert on yodeling, by expert yodeler Kerry Christensen, who will demonstrate alpine, classical, a...

Anthrax paralyzes immune cells with lethal toxin, UF research shows

...ase progresses rapidly and patients often die from shock before they realize they have more than a common cold. The current method of detecting anthrax relies on lab cultures that can take days to complete. "We're looking for approaches to detect anthrax earlier in the blood," said Russell During, Ph.D.,...

Antidepressants stimulate new nerve cells in adult monkeys, may have implications for humans

... treated a group of monkeys with electroconvulsive shock (ECS), an animal version of the highly effective clinical antidepressant electroconvulsive therapy. They saw an increase in new nerve cells in the hippocampus. Over four weeks, a majority of these cells became mature neurons. These brain changes we...

New treatments have major impact on heart failure rates

...quent rates of critical heart failure cardiogenic shock reduce from 7.1 to 4.7 per cent. This is important as 70 per cent of patients with cardiogenic shock die. Professor Keith Fox, British Heart Foundation professor of cardiology at the University of Ed...

Why some aphids can't stand the heat

...promoters lived, but didn't reproduce. "The heat shock kills the bacteria very quickly, although it doesn't kill the aphid," Dunbar said. "But she's sterilized and doesn't have any babies." The bacteria provide nutrients essential for aphid reproduction. Conversely, aphids with bacteria with the mut...

Investigational cancer drug targets critical proteins

...affinity for a modified version of a critical heat shock protein they contain, researchers have found. They found in cancer a modified version of heat shock protein 90, or hsp90, which like most heat shock proteins, promotes cell survival. They then showe...

Scripps research study shows humans and plants share common regulatory pathway

...l responses." The study also showed that a heat shock protein, HSP90, helped stabilize Nod1. "Inhibiting HSP90 resulted in a significant reduction of Nod1 protein levels," Ulevitch said. "That clearly suggests that this protein plays a key role in stabilizing Nod1 and protecting it from degradation. ...

Mutation improves memory, may lead to memory-enhancing pill

...nimals are put into a cage followed by a mild foot shock or are exposed to a tone paired with a foot shock. Their memory for the earlier bad experience is determined based on how much they freeze in response to the "scary" place or sound 24 hr later. Importantly, the researchers also showed that treatmen...

Penn study finds ICD devices offer heart patients life-saving benefits

...ctric monitoring devices that deliver a lifesaving shock in the event of a cardiac arrest -- help patients with heart problems live longer more active lives. Further, the study found most patients living with ICDs enjoy a quality of life consistent with average Americans their age and have a high level of ...

Selective amnesia -- How a traumatic memory can be wiped out

...en to these sounds just before sending an electric shock to their paws. The next day, they gave half of th...s influence. Recalling the memory of the electric shock associated with the sound played while rats were under the influence of a drug thus meant that the m...

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