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Author  |
Bedrosian, T.A.; Nelson, R.J. |

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Title |
Timing of light exposure affects mood and brain circuits |
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Journal Article |
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Year |
2017 |
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Translational Psychiatry |
Abbreviated Journal |
Transl Psychiatry |
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7 |
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1 |
Pages |
e1017 |
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Keywords |
Human Health; Review |
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Abstract |
Temporal organization of physiology is critical for human health. In the past, humans experienced predictable periods of daily light and dark driven by the solar day, which allowed for entrainment of intrinsic circadian rhythms to the environmental light-dark cycles. Since the adoption of electric light, however, pervasive exposure to nighttime lighting has blurred the boundaries of day and night, making it more difficult to synchronize biological processes. Many systems are under circadian control, including sleep-wake behavior, hormone secretion, cellular function and gene expression. Circadian disruption by nighttime light perturbs those processes and is associated with increasing incidence of certain cancers, metabolic dysfunction and mood disorders. This review focuses on the role of artificial light at night in mood regulation, including mechanisms through which aberrant light exposure affects the brain. Converging evidence suggests that circadian disruption alters the function of brain regions involved in emotion and mood regulation. This occurs through direct neural input from the clock or indirect effects, including altered neuroplasticity, neurotransmission and clock gene expression. Recently, the aberrant light exposure has been recognized for its health effects. This review summarizes the evidence linking aberrant light exposure to mood. |
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Department of Neuroscience, Behavioral Neuroendocrinology Group, The Ohio State University Wexner Medical Center, Columbus, OH, USA |
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2158-3188 |
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PMID:28140399; PMCID:PMC5299389 |
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no |
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GFZ @ kyba @ |
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2446 |
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Author  |
Beebe, W. |
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Title |
Rediscovery of the Bermuda cahow |
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Journal Article |
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Year |
1935 |
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Bulletin of the New York Zoological Society |
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38 |
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187-190 |
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GFZ @ kyba @ |
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2556 |
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Author  |
Behera, S.K.; Mohanta, R. |

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Title |
Total An Investigation into Light Pollution as a Limiting factor for shift of Mass nesting ground at Rushikulya rookery Ganjam Odishas |
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Journal Article |
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Year |
2018 |
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American Journal of Marine Research and Reviews |
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1 |
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6 |
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Animals |
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Illumination due to artificial lights on nesting beaches and from nearby place to nesting beaches is detrimental to sea turtles because it alters critical nocturnal behaviors specifically, their choice of nesting sites and their return path to the sea after nesting. Illuminations perplex the hatchlings to find sea after emerging. Numerous studies conducted in other countries have demonstrated that artificial lights negatively impact on turtles, both female adults as they come to and go from their home beach to lay eggs, and to turtle hatchlings as they seek out the way to the open ocean. In this study we correlated the mass nesting intensity of 5years (2012 to 2018) at Rushikulya mass nesting site to the illumination zone. Illumination due to light conditions on nesting beaches are complex, and measuring light pollution in a way that effectively captures the impacts to sea turtles is difficult. But increase in intensity of illumination on selective mass nesting beaches showed gradual reduction in intensity of preferred nesting site during the mass nesting event. A gradual shift of nesting preference was also observed more toward darker zone. |
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NC @ ehyde3 @ |
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2104 |
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Author  |
Behn, C.; De Gregorio, N. |

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Title |
Melatonin Relations with Energy Metabolism as Possibly Involved in Fatal Mountain Road Traffic Accidents |
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Journal Article |
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2020 |
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International Journal of Molecular Sciences |
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Int J Mol Sci |
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21 |
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6 |
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Review; Human Health; dysrhythmia; melatonin; mountain road death |
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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. |
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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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1422-0067 |
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PMID:32235717; PMCID:PMC7139848 |
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GFZ @ kyba @ |
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3016 |
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Author  |
Benedetto, M.M.; Contin, M.A. |

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Title |
Oxidative Stress in Retinal Degeneration Promoted by Constant LED Light |
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Journal Article |
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Year |
2019 |
Publication |
Frontiers in Cellular Neuroscience |
Abbreviated Journal |
Front. Cell. Neurosci. |
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13 |
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Keywords |
Vision; Human Health |
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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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1662-5102 |
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GFZ @ kyba @ |
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2333 |
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