| Records |
| Author |
Gonzalez, T.J.; Lu, Y.; Boswell, M.; Boswell, W.; Medrano, G.; Walter, S.; Ellis, S.; Savage, M.; Varga, Z.M.; Lawrence, C.; Sanders, G.; Walter, R.B. |
| Title |
Fluorescent light exposure incites acute and prolonged immune responses in Zebrafish (Danio rerio) skin |
Type |
Journal Article |
| Year |
2018 |
Publication |
Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP |
Abbreviated Journal  |
Comp Biochem Physiol C Toxicol Pharmacol |
| Volume |
208 |
Issue |
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Pages |
87-95 |
| Keywords |
Animals |
| Abstract |
Artificial light produces an emission spectrum that is considerably different than the solar spectrum. Artificial light has been shown to affect various behavior and physiological processes in vertebrates. However, there exists a paucity of data regarding the molecular genetic effects of artificial light exposure. Previous studies showed that one of the commonly used fluorescent light source (FL; 4100K or “cool white”) can affect signaling pathways related to maintenance of circadian rhythm, cell cycle progression, chromosome segregation, and DNA repair/recombination in the skin of male Xiphophorus maculatus. These observations raise questions concerning the kinetics of the FL induced gene expression response, and which biological functions become modulated at various times after light exposure. To address these questions, we exposed zebrafish to 4100K FL and utilized RNASeq to assess gene expression changes in skin at various times (1 to 12h) after FL exposure. We found 4100K FL incites a robust early (1-2h) transcriptional response, followed by a more protracted late response (i.e., 4-12h). The early transcriptional response involves genes associated with cell migration/infiltration and cell proliferation as part of an overall increase in immune function and inflammation. The protracted late transcriptional response occurs within gene sets predicted to maintain and perpetuate the inflammatory response, as well as suppression of lipid, xenobiotic, and melatonin metabolism. |
| Address |
Xiphophorus Genetic Stock Center, Department of Chemistry and Biochemistry, 419 Centennial Hall, Texas State University, 601 University Drive, San Marcos, TX 78666, USA. Electronic address: RWalter@txstate.edu |
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English |
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| ISSN |
1532-0456 |
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| Notes |
PMID:28965927 |
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no |
| Call Number |
LoNNe @ kyba @ |
Serial |
1740 |
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| Author |
Weisbuch, C. |
| Title |
Historical perspective on the physics of artificial lighting |
Type |
Journal Article |
| Year |
2018 |
Publication |
Comptes Rendus Physique |
Abbreviated Journal |
Comptes Rendus Physique |
| Volume |
19 |
Issue |
3 |
Pages |
89-112 |
| Keywords |
History; Lighting |
| Abstract |
We describe the evolution of lighting technologies used throughout the ages, and how the need for improvements was such that any new technology giving better and cheaper lighting was immediately implemented. Thus, every revolution in energy sources – gas, petrol electricity – was first put to large-scale use in lighting. We describe in some detail several “ancient” techniques of scientific interest, along with their physical limitations. Electroluminescence – the phenomenon by which LEDs directly convert electricity into light – was long thought to only be of use for indicators or flat panel displays supposed to replace the bulky cathode-ray tubes. The more recent uses of LEDs were mainly for street traffic lights, car indicators, small phone displays, followed by backlighting of TV screens. LED lamps for general lighting only emerged recently as the dominant application of LEDs thanks to dramatic decrease in cost, and continuous improvements of color quality and energy conversion efficiency. |
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1631-0705 |
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no |
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GFZ @ kyba @ |
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1840 |
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| Author |
Stathakis, D.; Baltas, P. |
| Title |
Seasonal population estimates based on night-time lights |
Type |
Journal Article |
| Year |
2018 |
Publication |
Computers, Environment and Urban Systems |
Abbreviated Journal |
Computers, Environment and Urban Systems |
| Volume |
68 |
Issue |
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Pages |
133-141 |
| Keywords |
Remote Sensing |
| Abstract |
The objective of this paper is to present a method for estimating seasonally specific ambient population counts. The central assumption is that the variation in observed night-lights is a valid proxy for ambient population. Island populations are used for validation, where it is possible to derive estimates of ambient population from national statistics. The method is then applied to the whole of Greece. The validation shows a strong correlation amongst night-lights derived estimates and the reference dataset. Based on the proposed method, national maps are produced showing the month when seasonality is in its peak, the peak value during that month and the overall length of the season, in terms of how many months exceed a certain threshold. Different seasonality patterns are revealed. An advantage of the proposed method, compared to other contemporary approaches, is that it is based on public domain, global data. |
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0198-9715 |
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no |
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GFZ @ kyba @ |
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2177 |
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Bowne, D.R.; Cosentino, B.J.; Anderson, L.J.; Bloch, C.P.; Cooke, S.; Crumrine, P.W.; Dallas, J.; Doran, A.; Dosch, J.J.; Druckenbrod, D.L.; Durtsche, R.D.; Garneau, D.; Genet, K.S.; Fredericksen, T.S.; Kish, P.A.; Kolozsvary, M.B.; Kuserk, F.T.; Lindquist, E.S.; Mankiewicz, C.; March, J.G.; Muir, T.J.; Murray, K.G.; Santulli, M.N.; Sicignano, F.J.; Smallwood, P.D.; Urban, R.A.; Winnett-Murray, K.; Zimmermann, C.R. |
| Title |
Effects of urbanization on the population structure of freshwater turtles across the United States |
Type |
Journal Article |
| Year |
2018 |
Publication |
Conservation Biology : the Journal of the Society for Conservation Biology |
Abbreviated Journal |
Conserv Biol |
| Volume |
32 |
Issue |
5 |
Pages |
1150-1161 |
| Keywords |
Animals; Remote Sensing |
| Abstract |
Landscape-scale alterations that accompany urbanization may negatively affect the population structure of wildlife species such as freshwater turtles. Changes to nesting sites and higher mortality rates due to vehicular collisions and increased predator populations may particularly affect immature turtles and mature female turtles. We hypothesized that the proportions of adult female and immature turtles in a population will negatively correlate with landscape urbanization. As a collaborative effort of the Ecological Research as Education Network (EREN), we sampled freshwater turtle populations in 11 states across the central and eastern United States. Contrary to expectations, we found a significant positive relationship between proportions of mature female painted turtles (Chrysemys picta) and urbanization. We did not detect a relationship between urbanization and proportions of immature turtles. Urbanization may alter the thermal environment of nesting sites such that more females are produced as urbanization increases. Our approach of creating a collaborative network of scientists and students at undergraduate institutions proved valuable in terms of testing our hypothesis over a large spatial scale while also allowing students to gain hands-on experience in conservation science. This article is protected by copyright. All rights reserved. |
| Address |
Department of Biology, Rogers State University, 1701 W. Will Rogers Boulevard, Claremore, OK 74017, U.S.A |
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English |
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0888-8892 |
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PMID:29781169 |
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no |
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GFZ @ kyba @ |
Serial |
1920 |
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McKenna, H.; van der Horst, G.T.J.; Reiss, I.; Martin, D. |
| Title |
Clinical chronobiology: a timely consideration in critical care medicine |
Type |
Journal Article |
| Year |
2018 |
Publication |
Critical Care (London, England) |
Abbreviated Journal |
Crit Care |
| Volume |
22 |
Issue |
1 |
Pages |
124 |
| Keywords |
Human Health; Review |
| Abstract |
A fundamental aspect of human physiology is its cyclical nature over a 24-h period, a feature conserved across most life on Earth. Organisms compartmentalise processes with respect to time in order to promote survival, in a manner that mirrors the rotation of the planet and accompanying diurnal cycles of light and darkness. The influence of circadian rhythms can no longer be overlooked in clinical settings; this review provides intensivists with an up-to-date understanding of the burgeoning field of chronobiology, and suggests ways to incorporate these concepts into daily practice to improve patient outcomes. We outline the function of molecular clocks in remote tissues, which adjust cellular and global physiological function according to the time of day, and the potential clinical advantages to keeping in time with them. We highlight the consequences of “chronopathology”, when this harmony is lost, and the risk factors for this condition in critically ill patients. We introduce the concept of “chronofitness” as a new target in the treatment of critical illness: preserving the internal synchronisation of clocks in different tissues, as well as external synchronisation with the environment. We describe methods for monitoring circadian rhythms in a clinical setting, and how this technology may be used for identifying optimal time windows for interventions, or to alert the physician to a critical deterioration of circadian rhythmicity. We suggest a chronobiological approach to critical illness, involving multicomponent strategies to promote chronofitness (chronobundles), and further investment in the development of personalised, time-based treatment for critically ill patients. |
| Address |
Critical Care Unit, Royal Free Hospital, Pond Street, London, NW3 2QG, UK. daniel.martin@ucl.ac.uk |
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English |
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Edition |
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| ISSN |
1364-8535 |
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| Notes |
PMID:29747699 |
Approved |
no |
| Call Number |
GFZ @ kyba @ |
Serial |
1897 |
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