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Tag: "hostile" at biology news

Dopamine used to prompt nerve tissue to regrow

...erve degeneration, allowing the nerve to grow in a hostile environment post injury. When ready for clinical use, the polymer would be implanted at the damaged site to promote nerve regeneration. As the nerve tissue reforms, the polymer degrades. Wang's team found that dopamine's structure, which conta...

Worms produce surprise insight into human fever

...olved in many similar “effector?strategies against hostile bugs peristalsis, low gut pH, lytic enzymes, and antimicrobial peptides to prevent microbial colonization of the intestine. In dissecting two conserved pathways required for C. elegans immunity to bacteria, Aballay found a wealth of data on inna...

Interfering RNA silences genes in 'slippery' immune cells

...often uses RNAi as a defense against the action of hostile viruses. Over the past few years, biomedical researchers have been investigating how they might eventually harness RNAi in new medicines. Another line of research uses RNAi as a research tool, investigating the functions of specific genes by studyin...

New crop of technology reveals plant health

...or example, that they might have an application in hostile environments, like growing plants in space or soil-less systems. Potentially, these are situations where our system could prove very useful." The sensors and transmitters are two key elements of the system, but its heart is the management software, ...

Ancient fossil DNA found preserved in crystal

...ged niche in fossil bone," protecting the DNA from hostile environments and leaving it relatively undamaged over time. The team's findings suggest that the DNA in these aggregates should be preferred, whenever possible, over DNA from untreated bone. This method holds much promise for the future analysis of ...

Researchers use dirt to stay one step ahead of antibiotic resistance

... that innature, bugs in the soil survive in a very hostile environment. They dothis by developing resistance to the antibiotics produced by other soilbacteria. Understanding this process opens up a new avenue for findingnew therapies to prevent and treat antibiotic resistance in a clinicalsetting. ...

Animal models show that anabolic steroids flip the adolescent brain's switch for aggression

...nges in the brain. When the drugged hamsters were hostile hosts, a part of their brains called the anterior hypothalamus pumped out more of a neurotransmitter called vasopressin. By three weeks of withdrawal, vasopressin levels subsided in parallel with the aggressive behavior. The anterior hypothalamus r...

Stress substantially slows human body's ability to heal

...oreover, if the couple's relationship is routinely hostile toward each other, the delay in that healing proce...les whose hostility appeared low. "Wounds on the hostile couples healed at only 60 percent of the rate of couples considered to have low levels of hostility,...

Deep sea buffet for bone-devouring worms

...rganisms, allows some species to live in otherwise hostile environments, so it can be a powerful mechanism of evolutionary change. This is especially true in the deep sea. Survival in some deep-sea environments requires capabilities that animals alone don't possess. So teaming up with a microbial partner is ...

Microbe has huge role in ocean life, carbon cycle

...nism is able to survive as an unattached cell in a hostile environment, has a complete set of biosynthetic pathways, and can reproduce efficiently by consuming dissolved organic matter. "By comparison, humans are mostly junk DNA, with large parts of the human genome having no important function," Giovannoni...

New type of rejection blocker protects kidneys after transplant

...event rejection by suppressing the immune system's hostile response to a transplanted organ, Vincenti said he expects his patients to receive an injected immune tolerance treatment a few times a year -- and perhaps to be able to stop taking anti-rejection drugs altogether. UCSF enrolled the first patient to...

Researchers identify protein crucial for survival of Lyme-disease bacterium

... bacteria do, or something about the blood becomes hostile to them," said Dr. Norgard, who holds the B.B. Owen Distinguished Chair in Molecular Research. "Instead of helping the bacteria, the blood harms them. Ultimately, as the tick feeds on blood and begins to go through its molting process, the levels of ...

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