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Tuesday, February 19, 2013

ScienceDaily: Top Health News

ScienceDaily: Top Health News


Baby wash does not damage baby's skin barrier function, study finds

Posted: 18 Feb 2013 05:15 PM PST

New research has found washing newborn babies in a specific baby wash is just as safe as using water alone in terms of maintaining healthy skin.

Caffeine linked to low birth weight babies

Posted: 18 Feb 2013 05:15 PM PST

Maternal nutrition is important to a developing embryo and to the health of the child later in life. Supplementing the diet with specific vitamins is known to increase health of the fetus for example folic acid (vitamin B9) reduces the risk of spina bifida. However not everything an adult might consume is beneficial to a developing baby. New research shows that caffeine is linked to low birth weight babies and that caffeine from coffee in linked to increasing length of pregnancy.

A solution to sinusitis from the sea

Posted: 18 Feb 2013 02:33 PM PST

Scientists and surgeons are developing a new nasal spray from a marine microbe originally being investigated to clear the hulls of ships in order to help clear chronic sinusitis.

Thigh fat may be to blame for older adults who slow down

Posted: 18 Feb 2013 02:32 PM PST

A new study shows that an increase in fat throughout the thigh is predictive of mobility loss in otherwise healthy older adults.

Could an old antidepressant treat sickle cell disease?

Posted: 18 Feb 2013 02:32 PM PST

An antidepressant drug used since the 1960s may also hold promise for treating sickle cell disease, according to a surprising new finding made in mice and human red blood cells by a team has spent more than three decades studying the basic biology of the condition.

Bone marrow cells used in bladder regeneration

Posted: 18 Feb 2013 01:42 PM PST

A new approach to bladder regeneration uses bone marrow cells to recreate the organ's smooth muscle, vasculature and nerve tissue.

New study on hepatitis C drug treatment in vivo and in vitro

Posted: 18 Feb 2013 01:41 PM PST

Hepatitis C virus (HCV) infection affects 4 million in the US and is the prirmary cause of liver cirrhosis and liver cancer. New research shows that daclatasvir, an ant - HCV drug, has two modes of action and provides a more accurate estimate of the HCV half-life.

Shedding new light on infant brain development

Posted: 18 Feb 2013 01:41 PM PST

A new study finds that the infant brain does not control its blood flow the same way as the adult brain, that the control of brain blood flow develops with age. These findings could change the way researchers study brain development in infants and children.

Reduced Lung Function in Infancy Associated with Wheeze Later

Posted: 18 Feb 2013 01:41 PM PST

A study in Australia suggests that reduced lung function in infancy was associated with wheezing beyond childhood at 18 years of age, according to a new report.

Women have higher risk of hip implant failure

Posted: 18 Feb 2013 01:41 PM PST

Women appear to have a higher risk of implant failure than men following total hip replacement after considering patient-, surgery-, surgeon-, volume- and implant-specific risk factors, according to a new report.

Office workers beware: Sitting time associated with increased risk of chronic diseases

Posted: 18 Feb 2013 10:23 AM PST

Those who sat for more than four hours per day were significantly more likely to report having a chronic disease such as cancer, diabetes, heart disease and high blood pressure.

Stem cell-based bioartificial tissues and organs

Posted: 18 Feb 2013 07:30 AM PST

Surgeons have successfully transplanting bioengineered stem cell-based trachea, composed of both artificial and biological material. Now they plan to use the technique to recreate more complex tissues, such as the esophagus and diaphragm or organs such as the heart and lungs. Researchers have also made an experimental attempt to regenerate brain tissue in mice and rats.

Memory appears susceptible to eradication of fear responses

Posted: 18 Feb 2013 07:29 AM PST

Fear responses can only be erased when people learn something new while retrieving the fear memory. This is the conclusion of a new study.

Pathway controlling cell growth revealed

Posted: 18 Feb 2013 06:27 AM PST

Scientists have discovered a genetic defect that can halt cell growth and force cells into a death-evading survival state.

Excessive TV in childhood linked to long-term antisocial behavior, New Zealand study shows

Posted: 18 Feb 2013 06:27 AM PST

Children and adolescents who watch a lot of television are more likely to manifest antisocial and criminal behavior when they become adults, according to a new study.

Gut bacteria linked to cholesterol metabolism

Posted: 18 Feb 2013 06:25 AM PST

Researchers have shown that cholesterol metabolism is regulated by bacteria in the small intestine. These findings may be important for the development of new drugs for cardiovascular disease.

Molecules generated that can halt metastasis of colon cancer

Posted: 18 Feb 2013 06:25 AM PST

Medical researchers have managed to halt the progress of colon cancer and its metastasis in the liver in an experimental model with mice. This advance, that may open a new path for the future treatment of such pathologies, has been achieved by creating molecules which interfere with the adhesion of tumor cells to other cells of the organism. In this way, the molecules halt both the growth of the tumor and the dissemination of the tumor to and its proliferation in other organs.

Genetic key to preventing spine tumors

Posted: 18 Feb 2013 06:25 AM PST

Genetic medicine experts have identified a new gene responsible for causing an inherited form of tumor, known as spinal meningioma. Meningiomas are the commonest form of tumor affecting the brain and spine.

Blood is thicker than water – and blood plasma is, too

Posted: 18 Feb 2013 06:25 AM PST

Blood flows differently than water. Anyone who has ever cut themselves knows that blood flows viscously and rather erratically. The similarity between blood and ketchup is something not only filmmakers are aware of. Experts refer to these materials as "non-Newtonian fluids," of which ketchup and blood are prime examples. These fluids have flow properties that change depending on conditions, with some becoming more viscous, while others become less viscous.

'Activating' RNA takes DNA on a loop through time and space

Posted: 17 Feb 2013 10:42 AM PST

Long segments of RNA -- encoded in our DNA but not translated into protein -- are key to physically manipulating DNA in order to activate certain genes, say researchers. These non-coding RNA-activator molecules help create a loop of DNA to open up genes for transcription. They have a crucial role in turning genes on and off during early embryonic development, and have also been connected with genetic diseases, such as FG syndrome, and cancer.

Heart condition: Arrhythmia culprit caught in action

Posted: 17 Feb 2013 10:42 AM PST

Using powerful X-rays, researchers have reconstructed a crime scene too small for any microscope to observe -- and caught the culprit of arrhythmia in action.

The quest for a better bionic hand: Implantable interfaces connect a hand prosthesis to the nerves

Posted: 17 Feb 2013 10:42 AM PST

New implantable interfaces connect a hand prosthesis to the nerves, making for smarter prosthetics that feel and function more like the real thing.

Links between ozone levels and cardiac arrest analyzed

Posted: 17 Feb 2013 10:42 AM PST

Researchers working with a massive data set unique to Houston, have found a direct correlation between out-of-hospital heart attacks and levels of air pollution and ozone.

Ancient teeth bacteria record disease evolution

Posted: 17 Feb 2013 10:41 AM PST

DNA preserved in calcified bacteria on the teeth of ancient human skeletons has shed light on the health consequences of the evolving diet and behavior from the Stone Age to the modern day.

Losing hope of a good night's sleep is risk factor for suicide

Posted: 17 Feb 2013 05:53 AM PST

When people lose hope that they will ever get another good night's sleep, they become at high risk for suicide, researchers report.

Novel herbal compound offers potential to prevent and treat Alzheimer's disease

Posted: 17 Feb 2013 05:53 AM PST

Administration of the active compound tetrahydroxystilbene glucoside derived from the Chinese herbal medicine Polygonum multiflorum Thunb, reversed both overexpression of ±-synuclein, a small protein found in the brain, and its accumulation using a mouse model of Alzheimer's disease. These results may shed light on the neuropathology of AD and open up new avenues of treatment.

Possible link between diabetes and increased risk of heart attack death

Posted: 17 Feb 2013 05:52 AM PST

Having diabetes doubles a person's risk of dying after a heart attack, but the reason for the increased risk is not clear. A new study suggests the link may lie in the over-activation of an important heart enzyme, which leads to death of pacemaker cells, abnormal heart rhythm, and increased risk of sudden death in diabetic mice following a heart attack.

New enzyme that acts as innate immunity sensor discovered

Posted: 17 Feb 2013 05:50 AM PST

Two studies could lead to new treatments for lupus and other autoimmune diseases and strengthen current therapies for viral, bacterial, and parasitic infections.

Neuronal activity induces tau release from healthy neurons

Posted: 17 Feb 2013 05:50 AM PST

Researchers have discovered that neuronal activity can stimulate tau release from healthy neurons in the absence of cell death. The results show that treatment of neurons with known biological signaling molecules increases the release of tau into the culture medium. The release of tau from cortical neurons is therefore a physiological process that can be regulated by neuronal activity.

New findings on genetic risks of Behçet's disease

Posted: 17 Feb 2013 05:50 AM PST

Researchers don't know the exact cause of Behçet's disease, a condition that leads to serious complications such as blindness, but new research brings better understanding to what makes some people more susceptible to being affected.

Big improvement in diabetes control over past decades

Posted: 17 Feb 2013 05:45 AM PST

More people are meeting recommended goals in the 3 key markers of diabetes control, according to a new study.

Not your conventional nucleic acids: Spherical nucleic acids have novel properties that are perfect for biomedical applications

Posted: 17 Feb 2013 05:45 AM PST

Scientists have invented and developed a powerful nanomaterial that could revolutionize biomedicine: spherical nucleic acids (SNAs). The novel arrangement of nucleic acids imparts interesting chemical and physical properties that are very different from conventional nucleic acids. Potential applications include using SNAs to carry nucleic acid-based therapeutics to the brain for the treatment of glioblastoma, the most aggressive form of brain cancer, as well as other neurological disorders such as Alzheimer's and Parkinson's diseases.

'The Scars of Human Evolution': Physical fallout from two-footed walking

Posted: 17 Feb 2013 05:43 AM PST

From sore feet to backaches, blame it on human evolution.

Mussel-inspired 'glue' for surgical repair and cancer drug delivery

Posted: 17 Feb 2013 05:42 AM PST

When it comes to sticking power under wet conditions, marine mussels are hard to beat. Scientists have created new materials that mimic mussel adhesive proteins for three medical applications: sealants for fetal membrane repair, self-setting antibacterial hydrogels, and polymers for cancer drug delivery and thermal destruction of cancer cells. All of these materials contain a synthetic form of the catecholic amino acid DOPA (dihydroxyphenylalanine), one of the keys to mussels' sticking power.

Same genetic defect causes Pompe disease in both humans and dogs

Posted: 17 Feb 2013 05:39 AM PST

Pompe disease, a severe glycogen storage disease appearing in Lapphunds is caused by a genetic defect in acid α-glucosidase gene. The same genetic mutation also causes the equivalent disease in humans. Based on this finding, canine Pompe disease can now be diagnosed with a genetic test.

Horse meat scandal: Experts views from across Europe

Posted: 17 Feb 2013 05:37 AM PST

It all started when the Irish Food Standard Authority realized, mid-January, that some of the burgers sold in the country (and in the UK) contained about 29% of equine DNA, upon testing. This was much more than could not be accounted for by cross contamination in a meat factory. Tracing the meat back through complex supply chain, the manufacturer pointed the finger at a meat producer in Poland. At the time of writing, this possible source of contamination has not been confirmed. Doubt remains, particularly because Ireland has been known for poor traceability of its own horse meat aimed at export, which was found to have falsified passports. 

Is there a Neanderthal in the house?

Posted: 17 Feb 2013 05:29 AM PST

As we humans evolved over the millennia to walk on two legs, grow larger brains and shorter jaws, bear big babies and live longer, we've also experienced some negative consequences. But keeping our evolutionary history in mind can help us better deal with issues from obesity to difficult childbirth in a much more productive way, according to an anthropologist.

Prevention efforts focused on youth reduce prescription abuse into adulthood

Posted: 14 Feb 2013 04:42 PM PST

Middle school students from small towns and rural communities who received any of three community-based prevention programs were less likely to abuse prescription medications in late adolescence and young adulthood.

Natural probiotic for osteoporosis? Building healthy bones takes guts

Posted: 14 Feb 2013 04:41 PM PST

In what could be an early step toward new treatments for people with osteoporosis, scientists report that a natural probiotic supplement can help male mice produce healthier bones.

Hospitalization: Strong link between income inequality and readmission risk, but not mortality

Posted: 14 Feb 2013 04:41 PM PST

Income inequality is associated with an increased risk of readmission to hospital, but not mortality, finds a large US study of older patients.

Smoking bans linked with 'successive reductions' in preterm birth

Posted: 14 Feb 2013 04:41 PM PST

Smoking bans are associated with a "consistent pattern of reduction in the risk of preterm delivery," finds a new study.

Combo of Avastin, second drug shows promise fighting brain cancer

Posted: 14 Feb 2013 04:41 PM PST

The drug bevacizumab, also known by the trade name Avastin, shrinks tumors briefly in patients with an aggressive brain cancer known as glioblastoma multiforme, but then they often grow again and spread throughout the brain for reasons no one previously has understood. Now, researchers have found out why this happens.

Alcohol consumption is a leading preventable cause of cancer death in U.S., experts say

Posted: 14 Feb 2013 04:41 PM PST

Researchers have shown that alcohol is a major contributor to cancer deaths and years of potential life lost. These findings also show that reducing alcohol consumption is an important cancer prevention strategy as alcohol is a known carcinogen even when consumed in small quantities.

Technique that removes additional toxins prolongs dialysis patients' lives

Posted: 14 Feb 2013 04:40 PM PST

A technique that removes additional toxins during dialysis decreased kidney failure patients' risk of dying from any cause by 30 percent over three years. The technique also reduced patients' risk of dying from heart-related causes or infections. 15 to 25 percent of dialysis patients die annually.

New therapeutic target for coronary heart disease

Posted: 14 Feb 2013 11:18 AM PST

Scientists investigating how certain genes affect an individual's risk of developing coronary heart disease have identified a new therapeutic target, according to new research.

Limits on brain's ability to perceive multifeatured objects

Posted: 14 Feb 2013 10:40 AM PST

New research sheds light on how the brain encodes objects with multiple features, a fundamental task for the perceptual system. The study suggests that we have limited ability to perceive mixed color-shape associations among objects that exist in several locations.

Animal model of human evolution indicates thick hair mutation emerged 30,000 years ago

Posted: 14 Feb 2013 10:39 AM PST

The first animal model of recent human evolution reveals that a single mutation produced several traits common in East Asian peoples, from thicker hair to denser sweat glands, an international team of researchers reports.

Defect in immune memory may cause repeat bladder infections

Posted: 14 Feb 2013 10:39 AM PST

Recurrent bladder infections, which are especially common among women, may result from a defect among the bladder's immune fighters that keeps them from remembering previous bacterial infections. The immune memory lapse can hamper a timely and effective attack, according to researchers.

Studies reveal genetic variation driving human evolution

Posted: 14 Feb 2013 10:39 AM PST

A pair of studies sheds new light on genetic variation that may have played a key role in human evolution. The study researchers used an animal model to study a gene variant that could have helped humans adapt to humid climates, and they used whole-genome sequence data to identify hundreds of gene variants that potentially helped humans adapt to changing environmental conditions over time.

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