ScienceDaily: Top Health News

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• Clearest new pictures of immune cells
• US physicians put patients' best interests above concerns about health care costs
• Organ transplantation as source of fatal rabies virus case
• When bar fights get mean, bystanders intervene
• Pain of artificial legs could be eased by real-time monitoring
• Sleep deprivation linked to aging skin, study suggests
• Oxygen – key to most life – decelerates many cancer tumors when combined with radiation therapy
• Pathways activated in most K9 bone tumors not driving the worst bone tumors
• Optimists better at regulating stress
• Natural pest control protein effective against hookworm: A billion could benefit
• Vulnerabilities of the deadly Ebola virus identified
• Faster, simpler diagnosis for fibromyalgia may be on the horizon
• Gene that may stop the spread of breast cancer identified
• No link between prenatal mercury exposure and autism-like behaviors found
• New approach for studying deadly brain cancer
• Brain picks out salient sounds from background noise by tracking frequency and time, study finds
• A new weapon against stroke
• Is a common food fungus worsening the AIDS epidemic?
• Major cities often safest places in the U.S.

Clearest new pictures of immune cells Posted: 23 Jul 2013 03:11 PM PDT Scientists have revealed new images which provide the clearest picture yet of how white blood immune cells attack viral infections and tumors.

US physicians put patients' best interests above concerns about health care costs Posted: 23 Jul 2013 03:06 PM PDT A new study of attitudes about health care costs reveals that an overwhelming majority of U.S. physicians feel a responsibility to address costs, but prioritize their obligations to patients' best interests over cost concerns.

Organ transplantation as source of fatal rabies virus case Posted: 23 Jul 2013 03:06 PM PDT An investigation into the source of a fatal case of raccoon rabies virus exposure indicates the individual received the virus via a kidney transplant 18 months earlier, findings suggesting that rabies transmitted by this route may have a long incubation period, and that although solid organ transplant transmission of infectious encephalitis is rare, further education to increase awareness is needed.

When bar fights get mean, bystanders intervene Posted: 23 Jul 2013 12:50 PM PDT People are more likely to try to break up a bar fight when they believe the conflict is too violent, or has the potential to become more violent, according to researchers.

Pain of artificial legs could be eased by real-time monitoring Posted: 23 Jul 2013 12:50 PM PDT Engineers have developed a device that tracks how much a person's limb swells and shrinks when inside a prosthetic socket. The data could help doctors and patients predict how and when their limbs will swell, which could be used to build smarter sockets.

Sleep deprivation linked to aging skin, study suggests Posted: 23 Jul 2013 12:50 PM PDT In a first-of-its-kind clinical trial, physician-scientists found that sleep quality impacts skin function and aging. The study, commissioned by Estée Lauder, demonstrated that poor sleepers had increased signs of skin aging and slower recovery from a variety of environmental stressors, such as disruption of the skin barrier or ultraviolet (UV) radiation. Poor sleepers also had worse assessment of their own skin and facial appearance.

Oxygen – key to most life – decelerates many cancer tumors when combined with radiation therapy Posted: 23 Jul 2013 12:49 PM PDT A multidisciplinary team has found that measuring the oxygenation of tumors can be a valuable tool in guiding radiation therapy, opening the door for personalized therapies that keep tumors in check with oxygen enhancement.

Pathways activated in most K9 bone tumors not driving the worst bone tumors Posted: 23 Jul 2013 12:49 PM PDT A new study shows NOTCH signaling elevated in K9 osteosarcoma, but aspects of Notch signaling noticeably deactivated in the worst cancers.

Optimists better at regulating stress Posted: 23 Jul 2013 10:45 AM PDT It's no surprise that those who tend to see a rose's blooms before its thorns are also better at handling stress. But science has failed to reliably associate optimism with individuals' biological stress response -- until now.

Natural pest control protein effective against hookworm: A billion could benefit Posted: 23 Jul 2013 10:44 AM PDT A benign crystal protein, produced naturally by bacteria and used as an organic pesticide, could be a safe, inexpensive treatment for parasitic worms in humans and provide effective relief to over a billion people around the world.

Vulnerabilities of the deadly Ebola virus identified Posted: 23 Jul 2013 10:44 AM PDT Disabling a protein in Ebola virus cells can stop the virus from replicating and infecting the host, according to new research.

Faster, simpler diagnosis for fibromyalgia may be on the horizon Posted: 23 Jul 2013 10:42 AM PDT Researchers have developed a reliable way to use a finger-stick blood sample to detect fibromyalgia syndrome, a complicated pain disorder that often is difficult to diagnose.

Gene that may stop the spread of breast cancer identified Posted: 23 Jul 2013 10:42 AM PDT In cancer, the spread of tumor cells from the primary site to other parts of the body is called metastasis and is a major cause of death, especially in patients with breast cancer. A new study shows that metastasis in breast cancer and the risk of death are reduced when the function of the gene HGMA2, is limited.

No link between prenatal mercury exposure and autism-like behaviors found Posted: 23 Jul 2013 08:37 AM PDT The potential impact of exposure to low levels of mercury on the developing brain -- specifically by women consuming fish during pregnancy -- has long been the source of concern and some have argued that the chemical may be responsible for behavioral disorders such as autism. However, a new study that draws upon more than 30 years of research in the Republic of Seychelles reports that there is no association between pre-natal mercury exposure and autism-like behaviors.

New approach for studying deadly brain cancer Posted: 23 Jul 2013 08:37 AM PDT Human glioblastoma multiforme, one of the most common, aggressive and deadly forms of brain cancer, is notoriously difficult to study. Now engineers have developed a three-dimensional hydrogel that more closely mimics conditions in the brain than other platforms used to study brain cancer.

Brain picks out salient sounds from background noise by tracking frequency and time, study finds Posted: 23 Jul 2013 08:37 AM PDT New research reveals how our brains are able to pick out important sounds from the noisy world around us. The study could lead to new diagnostic tests for hearing disorders.

A new weapon against stroke Posted: 23 Jul 2013 08:36 AM PDT Stem cell research for stroke has focused on developing therapeutic neurons -- the primary movers of electrical impulses in the brain -- to repair tissue damaged when oxygen to the brain is limited by a blood clot or break in a vessel. New research, however, shows that other cells may be better suited for the task.

Is a common food fungus worsening the AIDS epidemic? Posted: 23 Jul 2013 06:52 AM PDT A type of fungus coating much of the stored corn, wheat, rice and nuts in developing countries may be quietly worsening the AIDS epidemic, according to a new article.

Major cities often safest places in the U.S. Posted: 23 Jul 2013 05:13 AM PDT Overturning a commonly-held belief that cities are inherently more dangerous than suburban and rural communities, researchers have found that risk of death from injuries is lowest on average in urban counties compared to suburban and rural counties across the US.

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