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Tag: "difference" at biology news

Agent slows aging in mice

...han mice on a normal diet. Scientists measured the difference at a point called median lifespan, when half the c...the Ann Arbor VA Medical Center. No significant difference occurred in female mice. The scientists can’t explain why at this point. “We don’t know how NDGA is ...

Enzyme delivered in smaller package protects cells from radiation damage

...ranfected cells. However, there was no significant difference in survival between MnSOD-minicircle and MnSOD full plasmid transfected cells. According to Dr. Greenberger, whose group is currently conducting a phase I/II clinical trial in lung cancer patients consisting of twice-weekly swallowed MnSOD for protec...

Millions of children denied drug that costs less than $3 a year

...published in this week’s BMJ, found no significant difference in behavioural problems between phenobarbital and another drug called carbamazepine. Despite some limitations, the study provides more evidence to support the use of phenobarbital in developing countries. The burden of untreated epilepsy in terms ...

Newly found sensing system enables certain bacteria to resist human immune defenses

... gram-positive and gram-negative, with the primary difference being the nature of the bacterial cell wall. Little is known about how gram-positive bacteria—such as those that can lead to food poisoning, skin disorders and toxic shock—avoid being killed by AMPs. AMPs are made by virtually all groups of organisms...

Massive herds of animals found to still exist in Southern Sudan

... their surprise, the results in Boma showed little difference in the numbers of white-eared kob counted in the ’80s, which at the time was proclaimed one of the largest wildlife migrations on the planet. “We estimated more than 800,000 kob in Southern Sudan,” said Fay. “If you were a gold miner and hit a vein...

Marine phytoplankton changes form to protect itself from different predators

...gy. “These changes in form made nearly a 100-fold difference in the alga’s susceptibility to being eaten. It’s...periods of three to six days, and the overall size difference could be dramatic. “When one of these cells changes to the biggest colony form, although it takes a...

Ancient retrovirus sheds light on modern pandemic

...f Washington led by Evan Eichler found the largest difference overall between the chimp and human genomes was the presence or absence of PtERV1," Emerman said. "Chimps have 130 copies of PtERV1 and humans have none." It is believed that retroviruses have been entering the genome for many millions of years, a...

Want to save polar bears? Follow the ice

...s, we can make effective decisions that can make a difference for the largest carnivore on earth." The "Warm Waters for Cool Bears" initiative represents a departure from previous polar bear studies, which typically focused on either observing individual bears or following them with satellite collars, often ...

Human stem cell treatment restores motor function in paralyzed rats

...hough the spinal cord is intact. “The important difference between spinal cord ischemia and spinal cord trauma, such as might occur in a diving or car accident, is that in the ischemia model, no mechanical damage has occurred to the spinal cord,” said Marsala. “The spinal cord and brain motor centers are st...

Pistachios lower cholesterol, provide antioxidants

...ovascular disease risk. "We were pleased to see a difference between the two doses of pistachios for the lipoprotein ratios because it would appear that pistachios are causing the effect and that they act in a dose dependent way," says Gebauer. In addition, during this study researchers, researchers looked ...

Catching cancer's spread by watching hemoglobin

... beyond mere imaging, the technique can detect the difference between oxygen-carrying hemoglobin (oxyhemoglobin) and oxygen-lacking hemoglobin (deoxyhemoglobin). This is important for monitoring tumors, because the oxygenation state around cancerous tissue and the size and density of blood vessels around the tu...

Global survey of lizards reveals greater abundance of animals on islands than on mainland ecosystems

...s while an island acre contains 777 lizards. This difference in density persisted when the scientists controlled for location and environmental conditions. “The ecology of islands is particularly important because, while the world’s more than 100,000 islands constitute only 7 percent of the global land surf...

Scientists discover rare 'gene-for-gene' interaction that helps bacteria kill their host

...as found that not being able to produce ST made no difference to Photorhabdus when colonising insects unable to produce phenoloxidase. "This is conclusive evidence for a gene-for-gene interaction between the bacterium and the insect," said Richard ffrench-Constant (correct) of Exeter University. "Photorha...

Alien plants attack using 'resource conservation' as weapon, researchers say

...ent on short-time scales, but overall there was no difference in the long term," Funk said. "We were surprised that the invasive plants were not at a disadvantage under conditions where resources were scarce." Knowing your foe These results have important implications for controlling invasive species, s...

Gene mutation linked to cognition is found only in humans

...y by just 1.2 percent, yet there is a considerable difference in the mental and linguistic capabilities between the two species. A new study showed that a certain form of neuropsin, a protein that plays a role in learning and memory, is expressed only in the central nervous systems of humans and that it origina...

Molecule that destroys bone also protects it, new research shows

...se, compared to normal mice. "What’s the difference between an autoimmune disease like RA and periodontal disease" Periodontal disease is an infectious disease, and as with most infectious diseases, white blood cells of the innate immune system called neutrophils play a critical role in fighting infe...

Study shows continued success for new HPV vaccine against virus responsible for cervical cancer

...ed by Merck under the name Gardasil could make the difference in preventing cervical cancer. The vaccine targets HPV types 16 and 18, which cause about 70 percent of all cases of cervical cancer. It also targets HPV types 6 and 11, which together cause about 90 percent of all cases of genital warts. Resea...

HIV survival improves if patients stay in care

...population, determined that staying in care made a difference to longevity. Studying those in the VA population eliminated the issue of ability to pay for care, enabling him and his colleagues to look at care alone. Giordano and his colleagues looked at 2,619 men with HIV for more than four years. Most were ...

Research says boiling broccoli ruins its anti-cancer properties

...d in a domestic refrigerator showed no significant difference with only minor loss of glucosinolate levels over 7 days. However the researchers found that storage of fresh vegetables at much lower temperatures such as ?5 °C (much higher than for storage in a refrigerator at 4? °C) may cause significant loss...

Gene thought to assist chemo may help cancer thrive

...continued their analysis, they found that the main difference between the groups' genetic profiles was the gene p53. While both groups had roughly the same amount of the protein encoded by p53, the cancer group had mutations in their p53 that caused the gene’s corresponding protein not to function.The benign gr...

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