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Cell Biology News
Wed, 01 Apr 2015 08:43:27 EDT
Widespread agricultural contaminant impacts fish reproductive behavior
A common growth-promoting hormone used worldwide in the cattle industry has been found to affect the sexual behaviors of fish at a very low concentration in waterways – with potentially serious ecological and evolutionary consequences.
Tue, 31 Mar 2015 14:52:12 EDT
Skin tough: Why skin is resistant to tearing
Researchers have recorded the first direct observations of the micro-scale mechanisms behind the ability of skin to resist tearing. The results could be applied to the improvement of artificial skin, or to the development of thin film polymers for flexible electronics.
Tue, 31 Mar 2015 13:13:28 EDT
Soft, energy-efficient robotic wings
Researchers have discovered a new resonance phenomenon in a dielectric elastomer rotary joint that can make the artificial joint bend up and down, like a flapping wing.
Tue, 31 Mar 2015 11:34:23 EDT
On the edge of extinction: Tiny pupfish go without breathing to survive their harsh environment
The endangered desert pupfish has made itself at home in the harsh, hot environment of Death Valley hot springs by using a surprising evolutionary adaptation: They can go for up to five hours without oxygen.
Tue, 31 Mar 2015 07:43:50 EDT
How a deadly fungus evades the immune system
New research has scientists re-thinking how a lethal fungus grows and kills immune cells. The study hints at a new approach to therapy for Candida albicans, one of the most common causes of bloodstream infections.
Tue, 31 Mar 2015 07:39:26 EDT
Biology in a twist: Deciphering the origins of cell behavior
The inherent ‘handedness’ of molecular structures directs the behavior of individual cells and confers them the ability to sense the difference between left and right. This is a significant step forward in the understanding of cellular biology, investigators say.
Mon, 30 Mar 2015 21:43:12 EDT
Scientists link unexplained childhood paralysis to enterovirus D68
Scientists have found the genetic signature of enterovirus D68 in half of the California and Colorado children diagnosed with acute flaccid myelitis -- sudden, unexplained muscle weakness and paralysis -- between 2012 and 2014, with most cases occurring during a nationwide outbreak of severe respiratory illness from EV-D68 last fall.
Mon, 30 Mar 2015 21:39:47 EDT
Bacterial genetic pathway involved in body odor production discovered
For many, body odor is an unfortunate side effect of their daily lives. The smell is caused by bacteria on the skin breaking down naturally secreted molecules contained within sweat. Now scientists have studied the underarm microbiome and identified a unique set of enzymes in the bacterium Staphylococcus hominis that is effective at breaking down sweat molecules into compounds known as thioalcohols, an important component of the characteristic body odor smell.
Mon, 30 Mar 2015 16:24:23 EDT
Hormone known for mother's milk also fosters bond between parents
Research has discovered a role for prolactin, the hormone that stimulates milk production in nursing mothers, in the bond between parents. The study on cotton-top tamarins found a link between prolactin levels and sexual activity and cuddling among paired adults. Although this was a first for prolactin, it has previously been found for oxytocin, a hormone that stimulates childbirth and is linked to a range of pleasurable emotions.
Mon, 30 Mar 2015 13:46:04 EDT
How the DNA alarm-system works
Researchers have managed to clarify how DNA-damage signaling works. The DNA molecule is chemically unstable giving rise to DNA lesions, which is why DNA damage detection, signaling and repair, collectively known as the DNA damage response, are needed. DNA repair consists of enzymes which find the damaged DNA and repair it. Some of them recognize the damaged bases and give signals to the other enzymes, which repair the DNA.
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