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Tag: "killing" at biology news

University of Nevada, Reno research team discovers hormone that causes malaria mosquito to urinate

...o control. A potential solution to the problem of killing insects at any stage of development may be found in peptide hormones, small proteins in all animals that regulate most bodily functions. While researching the genome of the malaria mosquito, Schooley discovered two different types of diuretic hormone...

Scientists devise way to measure RNA synthesis on the fly in a live cell

...e techniques previously used to study RNA required killing and breaking up a cell in order to extract an RNA molecule. With those techniques, "one cannot detect in real time the underlying dynamics of RNA synthesis associated with cellular activities," he said. But the scientists in his laboratory have found...

Molecular miners find pain relief drugs from the sea

...oduce venom which they use to paralyse prey before killing and eating them. The venom of some cone snails is ...fies its victim before immobilising and eventually killing it. Witnesses to cone snail envenomation report that death by cone snail poisoning is seemingly pain...

How cell suicide protects plants from infection

...his colleagues discovered how the plants keep from killing themselves after they turn on the cell-suicide PCD process. Dinesh-Kumar first developed a technique for silencing or inactivating plant genes -- a technique that is now used by several research groups. His group studies the interaction between plan...

Shampoo detergent added to paint makes surfaces self-sterilizing

...touched surfaces in public buildings that continue killing germs for months, according to research conducted by a multi-state consortium of high school students and retirees. Working through the website science-projects.com, 10 students from New York, Texas and Virginia joined three World War II veterans an...

Ants, not evil spirits, create devil's gardens in the Amazon rainforest, study finds

...g all plants except its hosts with formic acid. By killing other plants, M. schumanni provides its colonies w...tensive pruning or poisoning. "The idea is that by killing other plants, the insects create a space for young D. hirsuta saplings to grow, thereby allowing the...

Hanging baskets of sex and death help fruit growers

...he pest with a virus that kills its larvae without killing other beneficial insects. The researchers at Warwick HRI, the horticultural research arm of the University of Warwick, have devised a hanging basket style dispenser full of a virus known to kill the larvae of codling moth. The dispenser is designed ...

Progress on HIV/AIDS significant but insufficient

...controlled, the epidemic would expand for decades, killing large numbers and wrecking entire societies. The global response required that several milestones be met: world leaders should give AIDS the same level of attention as they gave to global security; universal access to prevention and treatment must be...

How HIV disables the cells' call for help

...s, which block one type of immune response without killing the cell, be applied to these autoimmune diseases? To check their theory, the research team tested FP on rats suffering from an autoimmune syndrome similar to human rheumatoid arthritis, and on cultured human T cells. As they predicted, the rats trea...

'Cookbook recipes' would cure disease with nontoxic DNA delivery systems

...getting the right amount of DNA expression without killing innocent cells has become the Achilles' heel in DNA delivery. Positively charged (cationic) synthetic molecules will readily bond to negatively charged DNA molecules and have been used for DNA delivery, but these cationic molecules are often toxic t...

UCLA scientists reveal how Nipah virus infects cells

...ed between 1998 and 1999, sickening 265 people and killing 105. Spread from bats to pigs to humans, the outbreak infected more than 200 pig farmers and killed 40 percent. Desperate to contain the outbreak, the government ordered its military to kill more than 1 million pigs, resulting in economic devastation...

India's smoking gun: Dino-killing eruptions

...und 65 million years ago could shift the blame for killing the dinos. The Deccan Traps of India are one of Earth's largest lava flows ever, with the potential of having wreaked havoc with the climate of the Earth - if they erupted and released climate-changing gases quickly enough. French and Indian geologi...

Drugs from the deep blue

...cal activities that could be useful in medicine -- killing microbes, stopping growth of cancer cells, or affecting the flow of calcium in and out of cells. Marine natural products are an eclectic mix of chemical types, drawing on all the pathways of metabolism, Molinski said. Some are related to fats and pr...

Eliminating bacterial infections out of thin air

... can act as a "super-antibiotic", accelerating the killing of bacteria in conditions typical of those found d... bacterial infection. They also show that bacteria killing is increased under conditions of low oxygen due to HIF-1 upregulation, and that bacterial infection ...

Clean skies=faster global warming?

... can act as a "super-antibiotic", accelerating the killing of bacteria in conditions typical of those found d... bacterial infection. They also show that bacteria killing is increased under conditions of low oxygen due to HIF-1 upregulation, and that bacterial infection ...

Stolen gene allows insect virus to enter cells

...gene that turned baculoviruses into the lean, mean killing machines they are today. ...

UQ scientists break new ground in fight against infection & chronic disease

...ect the body, macrophages respond by engulfing and killing the microbes. "The cells also release chemical messengers to boost immunity," Professor Stow said. She said the research was made possible by advanced technologies at the IMB such as live cell microscopy and gene analysis, which are unique in Que...

Emerging staph strains found to be increasingly deadly and deceptive

...part because it has enhanced ability to circumvent killing by neutrophils." ...

Minimally Invasive Cancer Treatments Highlighted

...irectly to the affected organ (chemoembolization), killing the tumor with heat (radiofrequency ablation) or freezing the tumor (cryoablation) to treat cancer locally, without harming the healthy cells in the body. Targeted delivery of gene- and immuno-therapies are new frontiers in cancer treatment under inv...

Researcher uncovers details of how cancer spreads

...ss well understood, and it's the spreading that is killing people." ...

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