Sentences with phrase «cells than rats»

Adult rats living in disrupted environments produce fewer new brain cells than rats in stable societies, supporting theories that unstable conditions impair mental health and cognition

Not exact matches

Researchers blasted rats with full - body doses of RF radiation (mostly at higher levels than those associated with cell phones) from the time they were born until they were two years old for nine hours a day.

(The reason for growing the organ within a rat rather than a mouse was that the scientists needed to produce enough insulin - producing cells to reverse diabetes» effects in mice.)

«We've been hearing about their potential for more than a decade, but the results have always been in mice and rats, and no one has shown they're safe or effective in humans long term,» says Robert Lanza of Advanced Cell Technology in Marlborough, Massachusetts, the company that carried out the stem cell interventCell Technology in Marlborough, Massachusetts, the company that carried out the stem cell interventcell intervention.

This is because rat neurons are much more efficient at pumping ions into the cell than squid neurons, say the team, resulting in squid using up more energy to generate a charge and transmit the signal.

Rather than ceasing to divide, the cells of blind mole rats reach a point at which they die en masse in a bout of cell suicide that Gorbunova and her co-authors call «concerted cell death».

These cells also survived longer than rat neurons placed in a bath lacking the umbilical cord tissue - derived cells.

They tested it in a rat model of ADRP and found that after 2 to 3 months, eyes that had been injected with the virus - ribozyme combo contained 30 to 40 % more rod cells than eyes that received a dummy injection.

Because previous work in rats and monkeys has found that proteins that block the costimulatory signal can hold T cells at bay, Kim Olthoff, a transplant surgeon at the University of Pennsylvania Medical Center in Philadelphia, thought her team could achieve a targeted immune suppression by getting the transplanted organ itself — rather than proteins injected into the bloodstream — to block the costimulatory signal.

A new study in rats shows that lacing a penis graft with adult stem cells yields better healing and sexual function than using the graft alone.

More than a decade ago microelectrode studies of rats and monkeys revealed place cells that respond when the animals move to a particular spot in a maze.

Two weeks after the rats sustained their injuries, Schwartz's group found that the number of surviving cells in the damaged nerves of these rats was three times higher on average than in rats with similar damage that received a placebo injection.

Investigating granule cells in the rat's brain, they found a much larger proportion of inactive than active cells.

The cell cultures in the petri dishes are of human origin, and in some aspects resemble human brains more than the brains of lab animals such as rats or mice do.

«Experimental orthotopic transplantation of a tissue - engineered oesophagus in rats» describes transplanting an esophagus into rats that was seeded with their own stem cells, and notes that all animals survived the study period (14 days), and gained more weight than rats given a placebo operation.

The researchers found urethane to be more effective than diazepam, suppressing seizures for multiple days and accelerating recovery of weight lost while protecting the rats from cell loss in the hippocampus.

Another unusual finding is that both male and female rats exposed to cell phone radiation lived longer than rats that were not exposed to such.

This might be alarming to people but experts say rats can handle more radiation than humans, even if the latter frequently uses their cell phones.

They also discovered the rats with live stem cells grew weaker more slowly and lived longer than those that had received dead stem cell transplants.

The underlying mechanisms accounting for why hGDAsBMP are so much more beneficial in terms of neuroprotection and functional recovery than either hGDAsCNTF or undifferentiated precursor cells when transplanted into spinal cord injured rats remain to be investigated, but it is likely that multiple cellular functions are involved.

Back in 2011, for example, her lab demonstrated that beta cells in newborn rats are immature cells with very different gene expression and function than adult beta cells.

Children with asthma have lower vitamin A levels than children without asthma, and the degree of vitamin A deficiency they exhibit is directly proportional to the severity of their asthma.37, 38 In cell experiments, vitamin A eliminates the response of bronchial smooth muscle cells to growth factors that characterizes the asthmatic reaction39 and suppresses the activity of mast cells, which are involved in asthmatic or other reactions mediated by histamine or other inflammatory chemical messengers called leukotrienes.40 Consistent with studies in isolated cells, vitamin A deficiency causes asthmatic bronchial hyper - reactivity in live rats.41

Research on rats showed a doubling of cancer cells in mice that were fed with yogurt is more constrained than mice without the yogurt.

In fact, in one study, a dose of mercury sufficient to kill 1 percent of lab rats (lethal dose «LD01»), when combined with a dose of lead sufficient to kill 1 percent, killed 100 percent of the rats.13 A similar test involving mercury and aluminum in cultured neurons killed 60 percent of the cells when the two low - dose toxicants (LD01) were combined.14 Even antibiotics have been shown to enhance the uptake, retention and toxicity of mercury.14 Additionally, testosterone appears to aggravate mercury toxicity during development, while estrogen protects against it.15 This may explain why more boys than girls are diagnosed with autism spectrum disorders and attention deficit disorders.

Research from the Society for Neuroscience found that adult rats that were allowed to exercise regularly on a running wheel grew new brain cells and tested better on memory exercises than rats that did not run.

Your molecular clock is ticking faster 22.11.2009 High vitamin D level lengthens life expectancy of elderly Dutch 21.11.2009 Constant fight against appetite reduces life expectancy 09.11.2009 Stress reduces life expectancy at molecular level 07.11.2009 Animal study: melatonin extends lifespan 25.10.2009 Fish fatty acids reduce age - related physical performance decline 24.10.2009 Old muscles weaker, but tire less quickly than young ones 23.10.2009 How creatine lengthens your lifespan 20.10.2009 Melatonin keeps brain cells young 03.10.2009 Long marriage adds years to your life 18.09.2009 Drink three cups of tea a day and add five years to your life 11.09.2009 Life extending bacteria found in gut of Chinese centenarians 08.08.2009 Your initials determine how old you get 30.07.2009 Lecithin anti-aging supplement keeps hearing sharp 18.06.2009 Live ten years longer with just one multivitamin pill per day 06.06.2009 Life - extending effect of virgin olive oil shown in fat rats 22.05.2009 Daily dose of Echinacea lengthens life expectancy 24.04.2009 The less you sit, the older you'll get 21.04.2009 Animal study: nori contains life prolonging substance 06.04.2009 Vegetarianism is healthy, but not because of lack of animal protein 27.03.2009 Meditation lengthens lifespan 20.02.2009 Live longer with healthy fats 30.12.2008 Vitamin D delays aging at genetic level 28.12.2008 Physical exercise delays molecular aging by ten years 25.12.2008 How a low - carb diet helps against aging 23.12.2008 Vitamin D extends your life expectancy 22.12.2008 Too much growth hormone reduces life expectancy 07.11.2008 S - Words extend lifespan of writers and psychologists 11.10.2008 Creatine extends lifespan of mice 08.10.2008 Slim - waisted rats live longer 23.09.2008 Gingko lengthens rats» lifespan 12.09.2008 Strong men live longer 31.08.2008 Male orgasm prolongs life 23.08.2008 Ginkgo prolongs life 17.08.2008 Ginkgo protects the elderly against the first signs of Alzheimer's 16.08.2008

Testing device uses cells instead of animals WASHINGTON D.C. ---- Can a robot detect substance toxicity toward humans faster and more accurately than a traditional test on rats, mice, fish, or other animals?

Markkanen continues, «For research on breast carcinoma, tumor tissue of dogs is therefore, among other reasons, much better suitable than tissue from rats or cells cultivated in the laboratory.