92% of the world’s population exposed to unsafe levels of air pollution.

A new WHO air quality model confirms that 92% of the world’s population lives in places where air quality levels exceed WHO limits. Some 3 million deaths a year are linked to exposure to outdoor air pollution. Indoor air pollution can be just as deadly. In 2012, an estimated 6.5 million deaths (11.6% of all global deaths) were associated with indoor and outdoor air pollution together.

read the article.. www.sciencedaily.com/releases/2016/09/160927144248.htm


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Researchers uncover the skin barrier.

Researchers can now explain how the properties of the skin change depending on the environment. The new findings explain, among other things, why people don’t dehydrate in dry air. /…/ The outer layer of skin can be described as a thin barrier — a kind of film that changes its properties and allows more or less water penetrate its surface, depending on whether the surrounding air is moist or dry. Chemists at the Faculty of Science in Lund have now successfully uncovered the underlying mechanism of how these barrier films control their properties. This is a general mechanism that explains on a molecular level how the skin regulates itself according to the environment but also to the properties of second barrier films, such as in paints, skin creams and food.

read the full article.. www.sciencedaily.com/releases/2016/09/160927111453.htm


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New switch decides between genome repair, death of cells.

The genetic information of every cell is encoded in the sequence of the DNA double helix. Double strand breaks in the DNA, which can be induced by radiation, are a dangerous threat to the cells, and if not properly repaired can lead to cancer. Damaged cells need to decide whether the breaks can be fixed or whether they should be removed by a cellular suicide program called “apoptosis” before initiating cancer.

Björn Schumacher, one of the senior authors, explains: “Within seconds after an harmful incident, different mechanisms start. In a schizophrenic way, the cell starts repairing as well as preparing for apoptosis. We identified an uncharacterized mechanism that integrates signals from the ongoing repair process and the cell death machinery. A protein called UFD-2 forms large complexes at the breaks and verifies whether to proceed with the repair or whether it’s time to die.” In the process, UFD-2 is a point of intersection that both receives and gives signals.

read the full article.. www.sciencedaily.com/releases/2016/09/160927111446.htm


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World’s first baby born from 3-parent technique.

The world’s first baby has been born using a controversial new technique by US scientists to include DNA from three parents in the embryo, said a report Tuesday.

The baby boy was born five months ago in Mexico to Jordanian parents, and is healthy and doing well, said the report in New Scientistmagazine, described as an “exclusive.”

read the full article.. medicalxpress.com/news/2016-09-world-baby-born-parent-technique.html


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