(Press-News.org) Since the early 1900s, scientists have been wondering how birds and mammals could have developed almost identical conduction systems independently of each other when their common ancestor was a cold-blooded reptile with a sponge-like inner heart that has virtually no conduction bundles.
The studies show that it is simply the spongy inner tissue in the foetal heart that gets stretched out to become a fine network of conductive tissue in adult birds and mammals. And this knowledge can be put to use in the future.
### END
Researchers find our inner reptile hearts
The genetic building blocks behind the human heart's subtle control system have finally been identified
2012-09-14
ELSE PRESS RELEASES FROM THIS DATE:
Environment: Speaking the same language on noise exposure
2012-09-14
Quantifying noise exposure will be significantly easier thanks to a new set of common noise assessment methods published today. Comparable data on noise exposure in Europe is a prerequisite to set up EU policies to reduce noise pollution, a growing health and economic concern all over Europe. The new methods – known as Common Noise Assessment Methods in Europe (CNOSSOS-EU) – were drawn up by the European Commission's in-house science service, the Joint Research Centre. They assess noise from road, rail and air traffic and from industry, and will provide consistent and comparable ...
X-rays reveal the self-defence mechanisms of bacteria
2012-09-14
Many pathogenic bacteria are able to go into a dormant state by producing persister cells that are not susceptible to conventional antibiotics. This causes serious problems in the treatment of life-threatening diseases such as tuberculosis, where the presence of persister cells often leads to a resurgence of infection following medical treatment.
At the molecular level, the formation of persister cells is due to the presence of toxins that are produced by the bacteria themselves, and which enable them to enter the dormant state. During this hibernation period, the bacteria ...
Radar measurements of highest precision
2012-09-14
This press release is available in German.
Precise determination of distances is of increasing importance in fabrication technology, for instance, when actuating robots, producing micromechanical components, or controlling machine tools. Frequently, glass scales, inductive sensors, or laser measurement systems are used for distance measurements. Glass scales are very precise and reach micrometer precision. However, they are too inflexible and expensive for daily use. Inductive sensors measuring distances with a coil, magnetic field, and movement work in a contact-free ...
Passive smoking also affects neurodevelopment in babies
2012-09-14
A new study shows that newborns that have been exposed to nicotine from both active and passive smoking mothers show poor physiological, sensory, motor and attention responses.
Smoking during pregnancy has been linked to many different problems in infants like learning difficulties, attention deficit disorder with hyperactivity and even obesity.
However, although the paediatric and obstetric disorders linked to tobacco during this stage are well defined, the effects on neonatal behaviour have not yet been studied in depth.
A new study headed by experts at the ...
New insights on cell competition
2012-09-14
Scientists from the Spanish National Cancer Research Centre (CNIO) describe how natural selection also occurs at the cellular level, and how our body's tissues and organs strive to retain the best cells in their ranks in order to fend off disease processes. These results appear this week in the new issue of Cell Reports. The research, carried out in the CNIO, is led by Eduardo Moreno, who is currently working at the University of Bern in Switzerland.
Recent studies suggest that natural selection described by Charles Darwin also occurs at the cellular level, as our body's ...
Trade unions still fail to lure women leaders, study finds
2012-09-14
There is little doubt that Frances O'Grady has made history as the first woman to be elected General Secretary of the Trades Union Congress in September 2012. A recent study from Queen Mary, University of London casts some light on the level of O'Grady's achievement in the wider union landscape.
This cross-national study found that in both the UK and the US, women still have fewer top positions in trade unions despite growth in overall female membership.
The paper, Lift as You Rise: Union Women's Leadership Talk, discusses the lack of women at union leadership level, ...
Getting (drugs) under your skin
2012-09-14
CAMBRIDGE, MA -- Using ultrasound waves, MIT engineers have found a way to enhance the permeability of skin to drugs, making transdermal drug delivery more efficient. This technology could pave the way for noninvasive drug delivery or needle-free vaccinations, according to the researchers.
"This could be used for topical drugs such as steroids — cortisol, for example — systemic drugs and proteins such as insulin, as well as antigens for vaccination, among many other things," says Carl Schoellhammer, an MIT graduate student in chemical engineering and one of the lead authors ...
Surgery more profound effect than anesthesia on brain pathology, cognition in Alzheimer's mice
2012-09-14
PHILADELPHIA — A syndrome called "post-operative cognitive decline" has been coined to refer to the commonly reported loss of cognitive abilities, usually in older adults, in the days to weeks after surgery. In fact, some patients time the onset of their Alzheimer's disease symptoms from a surgical procedure. Exactly how the trio of anesthesia, surgery, and dementia interact is clinically inconclusive, yet of great concern to patients, their families and physicians.
A year ago, researchers at the Perelman School of Medicine at the University of Pennsylvania reported ...
45 percent of layoff victims, despite anger, would return to former employer
2012-09-14
With an 8.1 percent August unemployment rate and 12.5 million Americans out of work, a new Temple University study examines a neglected area of research: how the unemployment process impacts the willingness of those laid off to endorse or return to their previous employer.
The study of predominantly highly paid, college-educated professionals who are unemployed finds that 45 percent of layoff victims would return to work for their former employer – despite anger over being terminated. The research also emphasizes the importance of fair and transparent layoff decisions, ...
Dr. Chiaravalloti of Kessler Foundation comments on trends in rehabilitation research in MS
2012-09-14
September 12, 2012. West Orange, NJ. Nancy Chiaravalloti, PhD, an expert in cognitive rehabilitation research, authored two commentaries on trends in multiple sclerosis (MS) research. Dr. Chiaravalloti is director of Neuropsychology & Neuroscience Research at Kessler Foundation. She was recently appointed director of Traumatic Brain Injury Research at the Foundation and also is principal investigator of the Northern New Jersey TBI System, a NIDRR-funded model system. Dr. Chiaravalloti is also an associate professor at UMDNJ-New Jersey Medical School.
Her editorial, ...
LAST 30 PRESS RELEASES:
Public take the lead in discovery of new exploding star
What are they vaping? Study reveals alarming surge in adolescent vaping of THC, CBD, and synthetic cannabinoids
ECMWF - delivering forecasts over 10 times faster and cutting energy usage by 1000
Brazilian neuroscientist reveals how viral infections transform the brain through microscopic detective work
Turning social fragmentation into action through discovering relatedness
Cheese may really be giving you nightmares, scientists find
Study reveals most common medical emergencies in schools
Breathable yet protective: Next-gen medical textiles with micro/nano networks
Frequency-engineered MXene supercapacitors enable efficient pulse charging in TENG–SC hybrid systems
Developed an AI-based classification system for facial pigmented lesions
Achieving 20% efficiency in halogen-free organic solar cells via isomeric additive-mediated sequential processing
New book Terraglossia reclaims language, Country and culture
The most effective diabetes drugs don't reach enough patients yet
Breast cancer risk in younger women may be influenced by hormone therapy
Strategies for staying smoke-free after rehab
Commentary questions the potential benefit of levothyroxine treatment of mild hypothyroidism during pregnancy
Study projects over 14 million preventable deaths by 2030 if USAID defunding continues
New study reveals 33% gap in transplant access for UK’s poorest children
Dysregulated epigenetic memory in early embryos offers new clues to the inheritance of polycystic ovary syndrome (PCOS)
IVF and IUI pregnancy rates remain stable across Europe, despite an increasing uptake of single embryo transfer
It takes a village: Chimpanzee babies do better when their moms have social connections
From lab to market: how renewable polymers could transform medicine
Striking increase in obesity observed among youth between 2011 and 2023
No evidence that medications trigger microscopic colitis in older adults
NYUAD researchers find link between brain growth and mental health disorders
Aging-related inflammation is not universal across human populations, new study finds
University of Oregon to create national children’s mental health center with $11 million federal grant
Rare achievement: UTA undergrad publishes research
Fact or fiction? The ADHD info dilemma
Genetic ancestry linked to risk of severe dengue
[Press-News.org] Researchers find our inner reptile heartsThe genetic building blocks behind the human heart's subtle control system have finally been identified