Tag: "normal" at biology news

Protein 'chatter' linked to cancer activation

...u further explains that lack of this cross talk in normal cells promotes short chromosome ends and as a resu...rmation. A key difference between cancer cells and normal cells is that the former maintain their chromosome ends and have the unlimited potential to grow. Di...

Newly created cancer stem cells could aid breast cancer research

...e. But the cancer cells previously engineered from normal breast cells for laboratory studies looked differe...fers clues about the trajectory of cancer cells. A normal cell is thought to evolve progressively toward a malignant state through a series of genetic mutatio...

Doernbecher Children's Hospital scientist earns coveted Javits award

...ies that will have the potential forrestoration of normal myelination and neurological function in childrenw...whenblood flow to the developing brain falls below normal or when maternalinfection occurs during pregnancy. Critically ill premature babies areespecially at ...

MIT creates 3-D images of living cell

...r be sure that you haven't somehow interfered with normal cellular function, said Badizadegan. The current resolution of the new technique is about 500 nanometers, or billionths of a meter, but the team is working on improving the resolution. We are confident that we can attain 150 nanometers, and perhaps...

Risk of common vaginal infection linked to preterm birth appears higher for blacks

...y a part. But we dont even know the differences in normal vaginal flora among racial groups, he said. More study is definitely needed. What we can say now is that its just not as simple as treating the woman....

High blood pressure, low energy -- a recipe for heart failure

...orced to pump against high pressure. The hearts of normal mice took that pressure overload in stride and stayed healthy. Those contrasting outcomes suggest that heart health greatly depends on ERR alpha. "The stress of a cardiac pressure overload asks heart muscle to manufacture more high energy compounds,...

Swarming starlings help probe plasma, crowds and stock market

...t this method would be much more accurate than the normal statistical analysis of such dynamic systems such as crowds or plasmas and it should be particularly good at picking up the phase transitions from disorder to order in such complicated systems. Initially the researchers were stumped as to how t...

ESF EURYI award winner aims to stop cancer cells reading their own DNA

... for a variety of diseases involving disruption to normal cellular functions and not just cancer. Dekkers work has already shown great promise, and she has been able to predict what effect certain antitumor drugs would have on the basis of her molecular insights, confirming her hypotheses in yeast cells. I...

OHSU turns mouse into factory for human liver cells

... "Our mice on this medicine are perfectly healthy, normal mice, and only when we take them off the NTBC do t...epopulated mouse livers are indistinguishable from normal human liver cells, according to the study. "The healthy human liver cells take over and replace the ...

Antioxidant overload may underlie a heritable human disease

... the animals, expecting they might see higher than normal levels. Instead, they found the mice had markedly reduced oxidative stress levels due to an abundance of a natural antioxidant known as glutathione. The mutant mouse hearts exhibited a heightened stress response, including higher activity of heat s...

A unique arrangement for egg cell division

... generate a single egg cell with 23 instead of the normal 46 chromosomes in humans. It is crucial that the egg has half the normal set of chromosomes, because the second half is brought in by the sperm cell during fertilisation. Th...

JCI table of contents: Aug. 9, 2007

...an because they eat less and move around more than normal mice. These effects on behavior were associated wi...e hypothalamus ate but did not increase the amount normal mice ate. This study therefore identifies FAS-mediated activation of PPAR-alpha as a molecular pathw...

New test improves detection of liver cancer

...r comprises a group of liver diseases in which the normal liver cells become damaged and are replaced by scar tissue. This reduces the amount of healthy liver tissue, and the accumulation of scar tissue disrupts the development and functioning of this complex organ. Cirrhosis of the liver has various causes...

Bacteria may not hasten death

...lecular and computational biology at USC, compared normal fruit flies to ones kept in an axenic (bacteria-fr...at the flies grown under axenic conditions and the normal flies had the same life span, Tower said. The experiment cannot be replicated in higher organisms,...

Story tips from the US Department of Energy's Oak Ridge National Laboratory, August 2007

...that has hardened surfaces four and five times the normal level while not compromising their resistance to corrosion. This hardened surface has been implemented in pump impellers undergoing severe wear operation at the Sonoco paperboard plant in Newport, Tenn. The impellers in the plant are working at three...

Teamwork between 2 key proteins necessary for normal development and regulation of red blood cells

... turned on and off is critical. In gene therapy, a normal gene can be inserted into cells to correct a genetic defect. However, according to Lloyd, in this case, the goal would be to insert a transcription factor into adult cells that would turn on an existing, silenced embryonic gene....

Gene predicts better outcome as cortex normalizes in teens with ADHD

...gest that ADHD is at the far end of a continuum of normal traits, said Philip Shaw, M.D., NIMH Child Psychia...ADHD, the attention-controlling areas thickened to normal by age 16 (see time-lapse image below). Gene variants of two other dopamine system components showe...

New mechanism links smoking to lung damage

...s ATP and small metabolites that are essential for normal cell sustenance. "We suspect that this mechanis...d to environmental stimuli," Lal said, "or even to normal aging, where oxidative stress is thought to contribute to the gradual accumulation of multiple small...

Multicenter study nets new lung tumor-suppressor gene

...umors' development: initiation, differentiation of normal lung cells into cancer cells, and metastasis." An examination of human non-small-cell lung tissue suggests LKB1 mutations play a role there as well. Of 144 samples analyzed, 34 percent of the lung adenocarcinomas and 19 percent of the squamous cell...

A sensory organ, not the brain, differentiates male and female behavior in some mammals

...excised vomeronasal organs from the nasal septa of normal adult females. These mice began behaving like male...strus cycles indistinguishable from those found in normal females. "It had previously been thought that entirely different neural circuits, modulated by the...

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(Date:7/30/2014)... black truffle uses reversible epigenetic processes to regulate its ... ,methylome, - a picture of the genome regulation taking ... access journal Genome Biology and illustrates how ... and ,jumping genes,. The authors say this may shed ... controlled. , Black truffles (Tuber melanosporum), also known as ...
(Date:7/30/2014)... deep-sea octopus protected and tended her eggs until they ... July 30, 2014 in the open-access journal PLOS ... Research Institute and colleagues. , Octopuses typically have a ... protect and take care of their fertilized eggs until ... for 1 to 3 months, but little is known ...
(Date:7/30/2014)... effects of climate change on the world,s animal ... factors, according to a new paper by a ... of Queensland, and other organizations. The authors claim ... the point when it comes to climate change. ... scientists focus on the "direct" threats of changing ...
Breaking Biology News(10 mins):How black truffles deal with the jumpers in their genome 2Deep-sea octopus has longest-known egg-brooding period 2Conservation scientists asking wrong questions on climate change impacts on wildlife 2
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