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It's been a while since anyone thought about the light bulb blowing one, you put another. Today, it is more complex, and energy efficiency issues have given rise to a range of options, including incandescent lamps, compact fluorescent lamps, LED lamps, LED medical lighting are the most expensive options, but they are also the most energy efficient, becoming more cost-effective, and they are increasingly popular. This growing acceptance concerns long-term or short-term direct contact with the skin especially a 2012 division study found that exposure to fluorescent light bulbs (CFL) concerns that the bulbs can harm skin cells due to ultraviolet radiation (studies show harmful effects of CFL bulbs on the skin).

In the College of Engineering Materials Science and Engineering, Miriam rafailovich, distinguished Professor of Applied Science (left), Assistant Professor tatsiana mironava, Ph.D. (right) and chemical engineering undergraduate student Emily Leonard, Jason Family, Stephanie Falconer's LED lamp were tested for the effects of leduv on skin cells.

The undergraduate thesis by the chemical engineering major of Stony Brook University eased the concern. Research findings on the effects of color on human dermal fibroblast proliferation LED exposure, mitochondrial activity, and cell morphology were presented on a March 29 poster at the American Society of Chemical Engineers (AIChE) conference.

'LEDuv has been used for indoor lighting applications with potential in wound healing therapy, belonging to medical lighting, therapeutic lighting.' tatsiana mironava Visiting Assistant Professor, PhD, in the Department of Materials Science and Engineering at SBU, and a student advisor. 'We wanted to evaluate the effects of exposure to color-changing LED light bulbs on human skin fibroblasts.'

The team is a distinguished professor of Engineering and Applied Science in Miriam's Laboratory rafailovich, College of Materials Science and Engineering. Dr. rafailovich, who also directs the Garcia Center for Materials Science and Engineering Research at Stony Brook University, is the principal investigator of this project and is one of SBU's most experienced instructors. The students were killed by the Jason family, Stephanie Falcon, Emily Leonard.

'The team exposed fibroblast cultures to four LED wavelengths of red, green, blue, and white for a normalized intensity period, so all the samples were exposed to the same power in one test,' rafailovich said. 'Cells were counted with a blood cell counter; Mitochondrial activity and cell morphology were determined by MTS method. Image analysis by confocal microscope. The culture was exposed to two different conditions: a longer exposure test of Dulbecco's modified Eagle culture-medium DMEM] [, a phenol red free sample, and no media test, carried out for 3 minutes with maximum risk.'

The short-exposure samples showed no tendency for higher cell proliferation than the control group (one sample in an incubator; A sample is exposed only to ambient light). Long-exposure samples with 1 ml DMEM medium (up to 15 minutes of exposure time) did not show a growing trend of LED-exposed cells in control samples.

'At this point, we have seen that LED exposure does not coincide with the trend of harmful human skin fibroblasts for medical lighting,' Leonard reports. This helps clarify scientific thinking about the subject, according to Falcon. 'When we first started preliminary research in this paper, we encountered several conflicting opinions on whether LED lights were all harmful,' she says. 'Some people claim that they have damage to skin cells, while others use them to heal wounds, so seeing themselves, cells proliferate in leds.'

Dr mironava confirmed the students' conclusions. 'LED medical lighting leds absolutely do not harm the skin fibroblast cells and are not at all at risk,' she said. 'In fact, in some cases, we observed an increase in mitochondrial activity and cell proliferation, suggesting that exposure to light from LED medical lighting leds may be beneficial to cells.'

The students are investigating LED exposure for factors affecting wound healing. Shenzhen Caneng Optoelectronics Co., Ltd. mainly focuses on the application of special LED and module, medical lighting and UV market.