It is well-known that breast milk is beneficial for newborns, as its contents protect against all sorts of diseases. Breast milk contains a variety of substances that cow milk for human consumption does not. Italian scientists have shown it also protects against cancer, by revealing that breast milk contains high levels of an anti-cancer protein.
Sunday, April 29, 2012
Light can prevent a heart attack
A heart attack, or myocardial infarction, is a serious condition where heart cells die, reducing the pump function and thereby the blood supply to the body. The heart itself needs to be supplied by blood as well, and if the so-called coronary arteries are shut down, heart cells die because of a lack of oxygen. Risk factors include bad diet habits, high blood pressure, smoking, alcohol and all other things that can damage blood vessels. Therefore, it is highly advisable to adopt a healthy lifestyle. Scientists from the University of Colorado have discovered an additional factor to help prevent heart attack: light. Strong light, or even daylight, has been shown to reduce the risk of heart attacks.
Saturday, April 28, 2012
Special properties make skin water resistant
Whenever we swim or take a bath, our bodies do not get soaked with water, sinking us to the bottom. Even though skin gets wet and wrinkled because of the water, it is largely kept out of our bodies. Scientists have finally discovered how that works, and it is attributed to special properties of fat, functioning as water repellents. Working out the mechanism enables us to improve drug delivery across the skin barrier.
Friday, April 27, 2012
Computer simulation reveals 115 potential cancer drugs
Organisms exist because countless different proteins and other molecules work together in endlessly complex processes that keep our cells packed together in an organized fashion. It is therefore no surprise that scientists have increased the use of computer models to analyse interactions and biological mechanisms. When the Hospital del Mar Research Institute performed a computer study to find proteins involved with cancer mechanisms, they found a library of 115 that could potentially be targeted for new therapies.
Early evolution of life tells us how to treat many diseases
There are still many secrets surrounding the question of how life on Earth came to be. Somehow, out of inorganic molecules, biological compounds such as amino acids and strings of genetic code were created. Later, these substances were 'packaged' into cells and possibly viruses, and the first bacteria also came into existence. Because bacteria are still around today, they are readily studied by scientists to uncover traces of evolutionary mechanisms that brought us to where we are today. A biological process analysed by the Case Western Reserve University explains something about the evolution of bacteria, but more importantly, gives us leads to treat a great variety of diseases.
Thursday, April 26, 2012
When it comes to the brain, it is 'use it or lose it'
Scientists have found biological proof for the common belief that it is beneficial to 'use' your brain, as doing so will increase your cognitive capabilities. As it turns out, having a 'cognitive lifestyle', which basically is doing a lot of thinking, preserves your brain. Even though it does not protect you against various brain diseases, thinking helps to keep your brain cells functioning for longer. Studies led by the University of Sydney revealed what happens in the brains of people that frequently utilize their cognitive capabilities.
Wednesday, April 25, 2012
Junk DNA can function as virus detector
DNA is the blueprint for the information that all life forms depend on. Cells use specialized machinery to read specific parts of the genetic code, called genes, which are used for the production of proteins. In turn, proteins govern almost all cellular functions and thus are the building blocks of life. Despite the fact that our entire genetic code, dubbed the genome, holds tens of thousands of genes, there are large parts that are not used for protein production at all. This so-called junk DNA was thought to be unimportant, as remnants of evolutionary processes. More recently it was revealed junk DNA does have surprising functions, such as distinguishing us from monkeys. A recent study shows this so-called non-coding DNA is able to function as a detector for virus infections. This is normally a job for the immune system, which is why the role of our DNA is peculiar.
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