ScienceDaily: Latest Science News

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• How does pregnancy reduce breast cancer risk?
• Clarifying the effect of stem cell therapy on cancer
• Residents concerned about health effects of hydrofracking
• Shape-shifting mobile devices
• Subclinical thyroid condition associated with increased cardiovascular mortality
• Success in observation of swelling of single-particle of silicon electrode for lithium ion batteries during charging reaction
• Optimizing nanoparticles for commercial applications
• Conversion from 'bad' fat to good fat
• Plants moderate climate warming
• Obesity may influence heart function through sex hormones
• Mapping of cancer cell fuel pumps paves the way for new drugs
• Turtle genome analysis sheds light on turtle ancestry and shell evolution

How does pregnancy reduce breast cancer risk? Posted: 28 Apr 2013 08:04 PM PDT Being pregnant while young is known to protect a women against breast cancer. But why? New research finds that Wnt/Notch signalling ratio is decreased in the breast tissue of mice which have given birth, compared to virgin mice of the same age.

Clarifying the effect of stem cell therapy on cancer Posted: 28 Apr 2013 08:04 PM PDT Injection of human stem cells into mice with tumors slowed down tumor growth, finds new research. Human mesenchymal stem cells, isolated from bone marrow, caused changes in blood vessels supplying the tumor, and it is this modification of blood supply which seems to impact tumor growth.

Residents concerned about health effects of hydrofracking Posted: 28 Apr 2013 08:04 PM PDT Some residents living in areas in Bradford, Co, Pa., near natural gas operations, also known as hydraulic fracturing, are concerned their illnesses may be a result of nearby drilling operations. Twenty-two percent of the participants in a small pilot study surmise that hydrofracking may be the cause of such health concerns as sinus problems, sleeping difficulties, and gastrointestinal problems.

Shape-shifting mobile devices Posted: 28 Apr 2013 08:04 PM PDT Prototype mobile devices that can change shape on-demand could lay down the foundation for creating high shape resolution devices of the future.

Subclinical thyroid condition associated with increased cardiovascular mortality Posted: 28 Apr 2013 08:03 PM PDT Having high thyroid activity, and even "high-normal" levels, is a significant risk factor for cardiovascular and all-cause mortality, according to new work.

Success in observation of swelling of single-particle of silicon electrode for lithium ion batteries during charging reaction Posted: 28 Apr 2013 11:49 AM PDT Scientists have measured the volumetric expansion of single particles of silicon accompanying the charging reaction. This finding demonstrated the importance of electrode design from the viewpoint of volumetric energy density.

Optimizing nanoparticles for commercial applications Posted: 28 Apr 2013 11:49 AM PDT Nanoparticles are used in many commercial products catalysts to cosmetics. A review describes recent work on the three main nanoparticles used in photocatalytics, UV-blocking and sunscreens.

Conversion from 'bad' fat to good fat Posted: 28 Apr 2013 11:49 AM PDT Scientists have shown for the first time that white and brown fat cells can directly interconvert in a living organism from one type to the other. This finding challenges the prevailing belief that white and brown fat cells arise solely from distinct precursor cells. The knowledge will aid in the design of novel strategies to treat obesity.

Plants moderate climate warming Posted: 28 Apr 2013 11:49 AM PDT As temperatures warm, plants release gases that help form clouds and cool the atmosphere, according to new research.

Obesity may influence heart function through sex hormones Posted: 28 Apr 2013 11:48 AM PDT New research suggests that changes in sex hormones as seen in obesity may have possible effects on the heart. The study suggests effects on heart function in healthy men with artificially raised estrogen levels and artificially lowered testosterone levels to mimic an obese state.

Mapping of cancer cell fuel pumps paves the way for new drugs Posted: 28 Apr 2013 11:48 AM PDT For the first time, researchers have managed to obtain detailed images of the way in which the transport protein GLUT transports sugars into cells. Since tumors are highly dependent on the transportation of nutrients in order to be able to grow rapidly, the researchers are hoping that their study will form the basis for new strategies to fight cancer cells.

Turtle genome analysis sheds light on turtle ancestry and shell evolution Posted: 28 Apr 2013 11:48 AM PDT From which ancestors have turtles evolved? How did they get their shell? New data provides evidence that turtles are not primitive reptiles but belong to a sister group of birds and crocodiles. The work also sheds light on the evolution of the turtle's intriguing morphology and reveals that the turtle's shell evolved by recruiting genetic information encoding for the limbs.

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