Body

New research from scientists at McMaster University reveals exercise-related testosterone and growth hormone do not play an influential role in building muscle after weightlifting, despite conventional wisdom suggesting otherwise.

The findings indicate that bodybuilders who look to manipulate those hormones through exercise routines are wasting their time.

SANTA BARBARA, CA (June 14, 2012) A ten-year NIH-funded study has determined that a third of infants with prolonged seizures and fever suffer from either a new or reactivated roseola virus infection. Roseola viruses are the cause of the common childhood rash, but can also cause limbic encephalitis, a condition that frequently progresses to epilepsy. Investigators discovered one of the roseola viruses, human herpesvirus-6B (HHV-6B) in the blood of 32% of 169 infants with prolonged seizures, a condition known as status epilepticus.

With an unprecedented commitment that bridges the urgent need to address diarrheal disease with unique opportunities to overcome it once and for all, leaders in global health issued today's Declaration on Scaling-up Treatment of Diarrhea and Pneumonia. PATH joins the US Agency for International Development, the Clinton Health Access Initiative, the Micronutrient Initiative, and others in raising a collective voice, calling for investments to scale-up the use of proven tools, particularly oral rehydration solution, zinc, and amoxicillin.

The use of genetic testing to establish racial origins for political purposes is not only scientifically foolish, but also unethical and should be condemned, the European Society of Human Genetics (ESHG) said today (Thursday June 14). The society, which promotes research in basic and applied human and medical genetics and ensures high standards in clinical genetic practice, said that the use by a member of parliament from the Hungarian far-right Jobbik party of a genetic test to attempt to prove his 'ethnic purity' was ethically unacceptable.

When people say "Blood is thicker than water," they are literally right. Because nearly half of the 'life liquid' consists of solid components. The red blood cells form the greatest part of it – all in all around 40 percent of the blood. They contain the red pigment hemoglobin and are responsible for the transport of oxygen.

The morphology of coelacanths has not fundamentally changed since the Devonian age, that is, for about 400 million years. Nevertheless, these animals known as living fossils are able to genetically adapt to their environment. This is described by PD Dr. Kathrin Lampert from the RUB's Department of Animal Ecology, Evolution and Biodiversity along with colleagues from Würzburg, Bremen, Kiel and Dar es Salaam (Tanzania) in the journal Current Biology. "Coelacanths are rare and extremely endangered.

A molecule thought to limit cell proliferation also helps cancer cells survive during initial tumor formation and when the wayward cells spread to other organs in the body, researchers at the University of Illinois at Chicago College of Medicine have found.

The study was published in the May 31 issue of Nature.

The new study seems to contradict earlier findings that activation of the enzyme, called AMP-activated protein kinase, or AMPK, inhibits the growth of cells in culture.

Philadelphia, PA, June 14, 2012 – Regenerative medicine, or the use of specially grown tissues and cells to treat injuries and diseases, has been successful in treating disorders of a number of organs, including heart, pancreas, and cartilage. However, efforts to treat disorders of the corneal endothelium, a single cell layer on the inner surface of the cornea, with regenerative techniques have been less effective.

New research shows that human herpesviruses (HHV)-6B and HHV-7, commonly know as roseola virus), account for one third of febrile status epilepticus (FSE) cases. Results of the FEBSTAT prospective study now available in Epilepsia, a journal published by Wiley-Blackwell on behalf of the International League Against Epilepsy (ILAE), suggest that HHV-6B may be involved in the development of epilepsy and further research is urgently needed.

American mountain lions, or cougars, are re-emerging in areas of the United States, reversing 100 years of decline. The evidence, published in The Journal of Wildlife Management, raises new conservation questions, such as how humans can live alongside the returning predators.

Breast cancer cells frequently move from their primary site and invade bone, decreasing a patient's chance of survival. This process of metastasis is complex, and factors both within the breast cancer cells and within the new bone environment play a role. In next week's Journal of Biological Chemistry "Paper of the Week," Roger Gomis and colleagues at the Institute for Research in Biomedicine in Spain investigated how breast cancer cells migrate to bone.

Researchers at the University of East Anglia (UEA) have discovered unexpectedly large genetic differences between two similar species of the pathogenic Cryptosporidium parasite.

Published today in the journal Evolutionary Applications, the findings pave the way for a new gold standard test to distinguish between the waterborne parasite's two main species affecting humans. One species is spread from person to person (Cryptosporidium hominis) but the other is often spread from livestock to people (Cryptosporidium parvum).

The ability to cross a road in time is one that most of us take for granted. A new study published in the journal Age and Ageing, entitled 'Most Older Pedestrians are unable to cross the road in time: a cross-sectional study', has compared the walking speed of the older population in the UK (aged 65 and over) with the speed required to use a pedestrian crossing. Currently, to use a pedestrian crossing a person must cross at a speed above 1.2 meters per second.

During heavy rain, the lid of Nepenthes gracilis pitchers acts like a springboard, catapulting insects that seek shelter on its underside directly into the fluid-filled pitcher, new research has found. The findings were published today, Wednesday 13 June, in the journal PLoS ONE.

Wire bridges built to guide bats safely across busy roads simply do not work, University of Leeds researchers have confirmed.

In a study published today (13 June 2012) in PLoS ONE, a team from the University's Faculty of Biological Sciences monitored four wire bridges spanning major roads in the north of England. All had been built over the last nine years to replace hedgerows – the bats' established commuting routes – when these routes were severed by new roads.