Recent quotes:

Study links fluorescent lighting to inflammation and immune response - Neuroscience News

“In this report, we show genome-wide changes of gene expression patterns in skin, brain and liver for two commonly utilized fish experimental models (zebrafish and Japanese rice fish, also known as medaka), and a mammalian (mice), following exposure to 4,100 K ‘cool-white’ fluorescent light,” Walter said. “In spite of the extreme divergence of these animals (i.e., estimated divergence of mice and fish about 450 million years), and drastically different lifestyles (i.e., diurnal fish and nocturnal mice), the same highly conserved primary genetic response that involves activation of inflammation and immune pathways as part of an overall acute phase response was observed in the skin, brain and liver of all three animals. Follow-up studies to further define this response in mice are underway.”

Octopuses can ‘see’ with their skin | Science News

So far, though, there’s no evidence in squids and cuttlefishes that light striking skin is enough to make chromatophores blush. Cronin isn’t completely ruling out the idea yet and speculates about more subtle roles. “Maybe they don’t respond directly, but they may alter a signal sent from the central nervous system,” he says. Research on light detection beyond eyes and brains “has been neglected for some time,” says developmental biologist Florian Raible of the University of Vienna. Yet non-eye light sensing structures or compounds show up in the tube feet of sea urchins and the body walls of fruit fly larvae. And in Raible’s lab, a polychaete worm flees light — even after beheading.

Melanoma death rates are rising in men but static or falling in women -- ScienceDaily

In all countries, the rates were higher in men than in women. Overall, the highest three-year average death rates for 2013 to 2015 were found in Australia (5.72 per 100,000 men and 2.53 per 100,000 in women) and Slovenia (3.86 in men and 2.58 in women), with the lowest in Japan (0.24 in men and 0.18 in women). The Czech Republic was the only country where the researchers found a decrease in men's melanoma death rate, where there was as estimated annual percentage decrease of 0.7% between 1985 and 2015. Israel and the Czech Republic experienced the largest decreases in mortality rates in women, 23.4% and 15.5% respectively.

Mouse and human skin cells produce melanin on a 48-hour cycle -- ScienceDaily

. They observed that a 48-hour cycle of exposure resulted in the darkest coloration of the cells while minimizing the effects of stress, even when they controlled for total dosage of exposure. "The results were so surprising," says Levy. "We expected daily synchronization of the cell's protective cycles." Levy and her colleagues, including co-senior author and systems biologist Shai Shen-Orr and his PhD student Avelet Alpert of the Technion -- Israel Institute of Technology, observed that MITF (microphthalmia-associated transcription factor) seemed to play a role in synchronizing the protective cycles. MITF was previously shown to control production of melanin and its spread to surrounding skin cells. They found that upon one ultraviolet exposure, MITF expression fluctuates every 48 hours. Another exposure 24 hours later seemed to disrupt this expression pattern.

Safe' UV light may prevent infections in catheters, cardiac drivelines -- ScienceDaily

A specific wavelength of ultraviolet light, now delivered through light-diffusing optical fibers, is highly effective at killing drug-resistant bacteria in cell cultures, according to a new study led by David J. Brenner, PhD, a professor of radiation biophysics at Columbia University Vagelos College of Physicians and Surgeons. The technology is designed to prevent infections around skin-penetrating medical devices, such as catheters or mechanical heart pump drivelines.

Sunlight May Be the Next Beet Juice | Outside Online

The study involved shining two different doses of ultraviolet light (specifically UVA light—wavelengths between 315 and 400 nanometers) on ten volunteers, then measuring its effects on a range of outcomes like blood pressure, resting metabolism, and nitrite and nitrate levels. It’s this last bit that caught my attention, because the rise of beet juice as an endurance-boosting supplement is due to its high levels of nitrate. The body converts that nitrate to nitrite and then to nitric oxide, which seems to make your muscles work more efficiently during endurance exercise. These studies have also found that boosting levels of nitric oxide has other health benefits, like acutely lowering blood pressure and regulating blood sugar. (In fact, one recent study found that using mouthwash twice a day or more, which wipes out the oral bacteria that convert nitrate to nitrite, was associated with a 50 percent increase in the risk of developing prediabetes or diabetes.)