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Tag: "defeat" at biology news

Sponges as drugs

...es concerned produce their bioactive substances to defeat spatial competitors. This is important, as in an environment without spatial competitors, such as in a sponge culture, a lower concentration of the substances of interest to the pharmaceutical industry might be produced. Sponge culture The research...

Harmless virus may hold key to more effective HIV drug discovery

...al Society. "Viruses are clever about mutating to defeat the best efforts of chemists and biologists," said Weiss, an assistant professor of chemistry and molecular biology and biochemistry. "By recruiting a harmless virus, we're learning how HIV will respond to new classes of anti-viral drugs before these...

Ants win a waxy race

Ever tried to defeat natural forces? Specialist ants are capable of running on slippery waxy plant surfaces in order to reach their nests and food supplies. Some Macaranga trees in South East Asia have waxy stems to protect themselves from ants and other insects. Only on...

UW scientists report a new method to speed bird flu vaccine production

...h prepare the human immune system to recognize and defeat the wild viruses that spread among humans in an epidemic or pandemic. In their report, a team led by UW-Madison virologists Yoshihiro Kawaoka and Gabriele Neumann, describes an improved "reverse genetics" technique that makes it easier to make a see...

Depression model leaves mice with molecular scar

...pression-like social withdrawal syndrome, repeated defeat by dominant animals leaves a mouse with an endurin..., learning and depression, but Nestler said social defeat stress probably similarly affects other genes there as well. The researchers pinpointed how social ...

Mice lacking social memory molecule take bullying in stride

...mally develops when a mouse repeatedly experiences defeat by a dominant animal disappears when it lacks a ge... He and his colleagues also discovered that social defeat triggered an upheaval in gene expression in the target area of the circuit, the nucleus accumbens, l...

Inflammation and drugs to control this activity studied in a variety of tumors sites

...y calls on the forces of inflammation to fight and defeat the intruder. But when the biochemical processes of the immune system are either misdirected or chronically turned on, inflammation can lead to adversity, including some forms of cancer. For this reason, scientists are closely studying the link betw...

Defense peptide found in primates may block some human HIV transmissions

...t on both the cell and virus. Viruses that have to defeat more than one antiviral mechanism often develop resistance at a much slower pace. The next phase of Cole's research will delve more into the mutations that HIV-1 can take in an effort to minimize them as much as possible. Many series of laboratory ...

Just like us, social stress prompts hamsters to overeat, gain weight

...es under this common scenario. The study, "Social defeat increases food intake, body mass, and adiposity in...study asked three questions: Does repeated social defeat increase food intake, weight and fat in hamsters? If so, how many defeats are necessary? Do intermit...

Does evolution select for faster evolvers?

...enetic code ?like the genes that allow bacteria to defeat antibiotics. "Life clearly evolved to store genetic information in a modular form, and to accept useful modules of genetic information from other species," Deem said....

How T lymphocytes attack

...dicative of either the absence of an adversary, or defeat of the immune system in the battlefield. This scenario was published in The Journal of Experimental Medicine. How is a tumour destroyed by T lymphocytes? This scenario has recently been visualised by researchers at the Institut Curie. The orig...

Scientists identify specific enzymes that make meningitis hard to fight

...eria's DNA. This should lead to cell death and the defeat of the bacteria. However, the virulent meningitis ...air itself, and therefore vulnerable to attack and defeat by the body's immune system."...

Misusing vitamin to foil drug test may be toxic; plus, it doesn't work

...cessive doses of a common vitamin in an attempt to defeat drug screening tests may send the user to the hospital—or worse. Researchers from The Children's Hospital of Philadelphia and The University of Pennsylvania reported on two adults and two adolescents who suffered toxic side effects from taking larg...

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