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Sunday, June 3, 2012

ScienceDaily: Top Health News

ScienceDaily: Top Health News


For advanced prostate cancer, new drug slows disease

Posted: 02 Jun 2012 10:49 AM PDT

A new medication proved effective in slowing the spread of metastatic prostate cancer, while helping to maintain the quality of life, in patients with advanced disease. The Phase 3 study was unblinded midway, allowing patients receiving the placebo to instead take the drug because of the favorable results.

Cancer therapy that boosts immune system ready for wider testing

Posted: 02 Jun 2012 10:48 AM PDT

Scientists are testing experimental drugs aimed at restoring the immune system's ability to spot and attack cancer, have shown promising early results in patients with advanced non-small cell lung cancer, melanoma, and kidney cancer. More than 500 patients were treated in two new studies of two drugs that target the same immune-suppressive pathway, and the investigators say there is enough evidence to support wider testing in larger groups of patients.

Novel way to treat drug-resistant brain tumor cells

Posted: 01 Jun 2012 08:17 PM PDT

New research explains why the incurable brain cancer, glioblastoma multiforme (GBM), is highly resistant to current chemotherapies.

Computer-designed proteins programmed to disarm variety of flu viruses

Posted: 01 Jun 2012 08:17 PM PDT

Proteins found in nature, but that do not normally bind the flu, can be engineered to act as broad-spectrum antiviral agents against many flu virus strains, including H1N1 pandemic influenza. One engineered protein has a flu-fighting potency that rivals several monoclonal antibodies. The proteins are constructed via computer modeling to fit neatly onto a nano-sized target on flu viruses, and prevent that part of the virus from changing shape to infect cells.

Altitude training: Study puts some data behind conventional wisdom

Posted: 01 Jun 2012 08:15 PM PDT

With altitude training, coaches of elite runners generally fall into two camps when determining when their runners should compete after coming back from altitude, even though little research has been conducted on this question. A study by exercise physiologists finds that both camps might be right.

New combination of two previously approved FDA drugs treat lung cancer

Posted: 01 Jun 2012 10:56 AM PDT

Researchers have discovered a previously unrecognized signaling network disrupted in lung cancer that can be turned back on by a novel combination of two previously approved FDA drugs. The drug combination targets a pathway to treat advanced/late stage lung cancer. The work highlights how understanding the basic mechanisms regulating cancer development and progression can lead to new uses for existing FDA approved drugs in the treatment of cancer.

Potential new approach to regenerating skeletal muscle tissue

Posted: 01 Jun 2012 07:38 AM PDT

An innovative strategy for regenerating skeletal muscle tissue using cells derived from the amniotic fluid is outlined in new research. The article shows that damaged muscle tissues can be treated with cells derived from the fluids which surround the fetus during development, leading to satisfactory regeneration and muscle activity.

'Safe' levels of arsenic in drinking water found to compromise pregnant/lactating mothers, offspring

Posted: 31 May 2012 05:08 PM PDT

Exposure to arsenic in drinking water at the level the US Environmental Protection Agency currently deems as safe in the United States (10 parts per billion) induces adverse health outcomes in pregnant and lactating mice and their offspring, concludes a new study.

Baby wipes as safe as using water, study finds

Posted: 31 May 2012 05:07 PM PDT

New research has found that a brand of baby wipes is just as safe and hydrating as using water alone on newborn skin, suggesting official guidance may need updating.

Weather patterns can be used to forecast rotavirus outbreaks

Posted: 31 May 2012 05:06 PM PDT

By correlating weather factors like temperature, rain and snowfall, a professor of civil and environmental engineering is able to predict the timing and intensity of rotavirus, a disease that causes extreme diarrhea, dehydration and thousands of death annually, particularly among children. Her research focused on one of the hardest-hit regions of the world, South Asia.

Structural clockwork of circadian rhythms

Posted: 31 May 2012 11:58 AM PDT

Scientists have determined the three-dimensional structure of two proteins that help keep the body's clocks in sync. The proteins, CLOCK and BMAL1, bind to each other to regulate the activity of thousands of genes whose expression fluctuates throughout the course of a day.

Map could point way to fungus vaccine

Posted: 31 May 2012 10:57 AM PDT

Researchers have made breakthrough use of 3-D magnetic resonance technology to map the structure of Candida, a common fungus that is potentially deadly for individuals with impaired immune function. The work could pave the way for development of an effective vaccine.

New strategy directly activates cellular 'death protein'

Posted: 31 May 2012 10:57 AM PDT

Researchers have devised a strategy to directly activate a natural "death" protein, triggering the self-destruction of cells -- which could lead to new possibilities for designing cancer drugs.

Intravenous kidney cell transplant experiments raise hope for future human kidney failure treatments

Posted: 31 May 2012 10:56 AM PDT

Scientists have successfully transplanted primary kidney cells intravenously to treat renal failure in rats, pointing the way to a possible future alternative to kidney transplants and expensive dialysis treatments in humans.

Monkey lip smacks provide new insights into the evolution of human speech

Posted: 31 May 2012 10:56 AM PDT

Scientists have traditionally sought the evolutionary origins of human speech in primate vocalizations. But unlike these primate calls, human speech is produced using movements of the tongue, lips and jaw. Speech is also learned, while primate vocalizations are mostly innately structured. New research supports the idea that human speech evolved less from vocalizations than from communicative facial gestures.

After-sex switch: Mapping the changing behaviors in the female fruit fly's mind

Posted: 31 May 2012 10:56 AM PDT

If men are from Mars and women are from Venus, then it shouldn't be surprising that their neural circuits differ. Researchers have used dramatic changes in the behavior of the female fruit fly after sex to help map these often very different circuits.

New device warns workers of high levels of airborne metals in minutes rather than weeks

Posted: 31 May 2012 08:25 AM PDT

Scientists are reporting development of a new paper-based device that can warn workers that they are being exposed to potentially unhealthy levels of airborne metals almost immediately, instead of the weeks required with current technology. The device costs about one cent to make and could prevent illness in the millions of people who work with metal.

Health benefits of vitamin D dependent on type taken

Posted: 31 May 2012 07:23 AM PDT

New research has shown that vitamin D3 supplements could provide more benefit than the close relative vitamin D2.

Bitter taste receptors for Stevia sweeteners discovered

Posted: 31 May 2012 07:23 AM PDT

Stevia is regarded as a healthy alternative to sugar. Yet there are drawbacks to the Stevia products recently approved as sweeteners by the European Union. One of these is a long-lasting bitter after-taste. Scientists have now identified the receptors on the human tongue mediating the bitter sensation.

Protein in saliva promises new diagnostic methods

Posted: 31 May 2012 07:19 AM PDT

Blood poisoning is a serious problem in medical care. New research now shows that the protein suPAR, which can be used for early detection of critical cases of sepsis, is found in saliva, which opens new potential for tracking diseases.

Benefits of hypothermia for infants continue through early childhood, study suggests

Posted: 30 May 2012 04:01 PM PDT

A treatment to reduce the body temperatures of infants who experience oxygen deficiency at birth has benefits into early childhood, according to a follow-up study.

Early exposure to microbes reduces inflammation related to chronic disease later

Posted: 30 May 2012 12:23 PM PDT

American parents may want to rethink how much they protect their children from everyday germs. A new study done in lowland Ecuador finds no evidence of chronic low-grade inflammation -- associated with diseases of aging like cardiovascular disease. In contrast, about one-third of adults in the U.S. have chronically elevated C-reactive protein. Acute elevations in CRP are important for protection against infectious disease. When chronically produced, CRP is associated with chronic diseases.

Fatty acid found in fish prevents age-related vision loss, study suggests

Posted: 30 May 2012 12:21 PM PDT

An omega-3 fatty acid found in fish, known as DHA, prevented age-related vision loss in lab tests, demonstrates recently published medical research from the University of Alberta.

Synthetic blood platelets developed

Posted: 30 May 2012 10:37 AM PDT

Synthetic platelets have now been developed. Platelets are the components of blood that allow it to prevent excessive bleeding and to heal wounds. The unique physical and biochemical properties of platelets play an important role in performing these complex biological tasks. Smaller than red blood cells, platelets are flexible, disk-shaped cells that are 2-4 micrometers in size.

Skin transplant offers new hope for vitiligo patients

Posted: 30 May 2012 10:35 AM PDT

Dermatologists say skin transplant surgery is safe and effective for restoring skin pigmentation caused by the skin disease vitligo. In a first study of its kind in the United States, researchers followed 23 patients for up to six months after surgery and found that the treated area regained on average 43 percent of its natural skin color. In eight patients with localized vitiligo, the treated area regained on average 68 percent of its natural skin color.

A better delivery system for chemotherapy drugs

Posted: 30 May 2012 08:58 AM PDT

Medical researchers are developing new antibodies that bind to and kill off cancer cells exclusively. These antibodies have the potential to be used as a more efficient and effective method of delivering chemotherapy drugs directly to their targets.

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