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Author (up) Behn, C.; De Gregorio, N.
Title Melatonin Relations with Energy Metabolism as Possibly Involved in Fatal Mountain Road Traffic Accidents Type Journal Article
Year 2020 Publication International Journal of Molecular Sciences Abbreviated Journal Int J Mol Sci
Volume 21 Issue 6 Pages
Keywords Review; Human Health; dysrhythmia; melatonin; mountain road death
Abstract Previous results evidenced acute exposure to high altitude (HA) weakening the relation between daily melatonin cycle and the respiratory quotient. This review deals with the threat extreme environments pose on body time order, particularly concerning energy metabolism. Working at HA, at poles, or in space challenge our ancestral inborn body timing system. This conflict may also mark many aspects of our current lifestyle, involving shift work, rapid time zone crossing, and even prolonged office work in closed buildings. Misalignments between external and internal rhythms, in the short term, traduce into risk of mental and physical performance shortfalls, mood changes, quarrels, drug and alcohol abuse, failure to accomplish with the mission and, finally, high rates of fatal accidents. Relations of melatonin with energy metabolism being altered under a condition of hypoxia focused our attention on interactions of the indoleamine with redox state, as well as, with autonomic regulations. Individual tolerance/susceptibility to such interactions may hint at adequately dealing with body timing disorders under extreme conditions.
Address Laboratory of Extreme Environments, Department of Physiology and Biophysics, Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago 8380453, Chile
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Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1422-0067 ISBN Medium
Area Expedition Conference
Notes PMID:32235717; PMCID:PMC7139848 Approved no
Call Number GFZ @ kyba @ Serial 3016
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Author (up) Benedetto, M.M.; Contin, M.A.
Title Oxidative Stress in Retinal Degeneration Promoted by Constant LED Light Type Journal Article
Year 2019 Publication Frontiers in Cellular Neuroscience Abbreviated Journal Front. Cell. Neurosci.
Volume 13 Issue Pages
Keywords Vision; Human Health
Abstract Light pollution by artificial light, might accelerate retinal diseases and circadian asynchrony. The excess of light exposure is a growing problem in societies, so studies on the consequences of long-term exposure to low levels of light are needed to determine the effects on vision. The possibility to understand the molecular mechanisms of light damage will contribute to the knowledge about visual disorders related to defects in the phototransduction. Several animal models have been used to study retinal degeneration (RD) by light; however, some important aspects remain to be established. Previously, we demonstrated that cool white treatment of 200 lux light-emitting diode (LED) induces retinal transformation with rods and cones cell death and significant changes in opsin expression in the inner nuclear layer (INL) and ganglion cell layer (GCL). Therefore, to further develop describing the molecular pathways of RD, we have examined here the oxidative stress and the fatty acid composition in rat retinas maintained at constant light. We demonstrated the existence of oxidative reactions after 5 days in outer nuclear layer (ONL), corresponding to classical photoreceptors; catalase (CAT) enzyme activity did not show significant differences in all times studied and the fatty acid study showed that docosahexaenoic acid decreased after 4 days. Remarkably, the docosahexaenoic acid diminution showed a correlation with the rise in stearic acid indicating a possible association between them. We assumed that the reduction in docosahexaenoic acid may be affected by the oxidative stress in photoreceptors outer segment which in turn affects the stearic acid composition with consequences in the membrane properties. All these miss-regulation affects the photoreceptor survival through unknown mechanisms involved. We consider that oxidative stress might be one of the pathways implicated in RD promoted by light.
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Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1662-5102 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number GFZ @ kyba @ Serial 2333
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Author (up) Benfield, J.A.; Nutt, R.J.; Taff, B.D.; Miller, Z.D.; Costigan, H.; Newman, P.
Title A laboratory study of the psychological impact of light pollution in National Parks Type Journal Article
Year 2018 Publication Journal of Environmental Psychology Abbreviated Journal Journal of Environmental Psychology
Volume 57 Issue Pages 67-72
Keywords Conservation; Skyglow; Psychology
Abstract Light pollution is ubiquitous in much of the developed and developing world, including rural and wilderness areas. Other sources of pollution, such as noise or motorized vehicle emissions, are known to impact the perceived quality of natural settings as well as the psychological well-being and satisfaction of visitors to those locations, but the effects of light pollution on visitors to natural settings is largely unstudied. Using experimental manipulations of light pollution levels in virtual reality simulations of three U.S. National Parks, the current study aimed to provide initial evidence of an effect on visitors. Results show that light pollution impacts a range of psychological and scene evaluation dimensions but that pristine night skies are not necessarily viewed as the ideal, likely due to being viewed as unfamiliar or unrealistic because so few have experienced the true baseline.
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Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0272-4944 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number GFZ @ kyba @ Serial 1941
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Author (up) Benito, B.; Guillamón, M.-D.; Martínez-Córdoba, P.-J.
Title Determinants of efficiency improvement in the Spanish public lighting sector Type Journal Article
Year 2020 Publication Utilities Policy Abbreviated Journal Utilities Policy
Volume 64 Issue Pages 101026
Keywords Lighting; Economics
Abstract This research analyzes the factors that can improve the efficiency of public lighting. First, the annual and inter-annual efficiency levels are calculated. Second, the effects of a set of environmental variables on these efficiency levels are checked with a truncated regression model. The results show that public management is more efficient than private or mixed management. Higher tourism, stronger local governments, and more hours of sunlight appear to improve efficiency. Local governments with the highest budgetary revenues and the most urbanized area experience the greatest improvement in efficiency year after year.
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Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0957-1787 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number GFZ @ kyba @ Serial 2840
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Author (up) Bennett, M.G.
Title The visual range of lights at night, and its relation to the visual range of ordinary objects by day. Type Journal Article
Year 1932 Publication Quarterly Journal of the Royal Meteorological Society Abbreviated Journal QJ Roy. Met. Soc
Volume 58 Issue Pages 259-271
Keywords Vision; Skyglow
Abstract
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Language Summary Language Original Title
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ISSN ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number GFZ @ kyba @ Serial 2414
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