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Author Sharma, A.; Goyal, R.
Title Long-term exposure to constant light induces dementia, oxidative stress and promotes aggregation of sub-pathological Abeta42 in Wistar rats Type Journal Article
Year 2020 Publication Pharmacology, Biochemistry, and Behavior Abbreviated Journal Pharmacol Biochem Behav
Volume in press Issue Pages (down) 172892
Keywords Animals; Amyloid beta; Behavior, fluoxetine, rifampicin; Oxidative stress
Abstract Constant exposure to light is prevalent in modern society where light noise, shift work, and jet lag is common. Constant light exposure disrupts circadian rhythm, induces stress and thus influences memory performance. We subjected adult male Wistar rats to a two-month exposure to constant light (LL), constant dark or normal light-dark cycles. Significant cognitive impairment and oxidative stress were observed in LL rats without a significant elevation in soluble Abeta1-42 levels. Next, we examined whether long-term exposure to constant light may accelerate dementia in a sub-pathological Abeta model of rats. Normal control rats received ACSF, AD rats received 440pmol, and sub-pathological Abeta rats (Abeta(s)) received 220pmol of human Abeta42 peptide in a single unilateral ICV administration. Sub-pathological Abeta rats exposed to constant light (LL+Abeta(s)) show significant memory deficits and oxidative damage, although not significantly different from LL rats. Additionally, constant light promoted aggregation of exogenous Abeta42 in LL+Abeta(s) rats shown by the presence of congophilic plaques. Furthermore, chronic fluoxetine treatment (5mg/kg/day) rescued rats from the behavioral deficits, oxidative damage and amyloid aggregation. Whereas, rifampicin treatment (20mg/kg/day) did not reverse the behavioral deficits or oxidative stress but rescued rats from amyloid plaque formation. It was concluded that constant light for two months induces behavioral deficits, oxidative stress, and accelerates aggregation of sub-pathological concentrations of human-Abeta42 peptides in Wistar rats, which is reversed by daily fluoxetine administration.
Address Neuropharmacology Laboratory, School of Pharmaceutical Sciences, Shoolini University, Solan 173 212, Himachal Pradesh, India. Electronic address: rohitgoyal@shooliniuniversity.com
Corporate Author Thesis
Publisher Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0091-3057 ISBN Medium
Area Expedition Conference
Notes PMID:32142744 Approved no
Call Number GFZ @ kyba @ Serial 2841
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Author Freitas, J.R. de; Bennie, J.; Mantovani, W.; Gaston, K.J.
Title Exposure of tropical ecosystems to artificial light at night: Brazil as a case study Type Journal Article
Year 2017 Publication PloS one Abbreviated Journal PLoS One
Volume 12 Issue 2 Pages (down) e0171655
Keywords Remote Sensing
Abstract Artificial nighttime lighting from streetlights and other sources has a broad range of biological effects. Understanding the spatial and temporal levels and patterns of this lighting is a key step in determining the severity of adverse effects on different ecosystems, vegetation, and habitat types. Few such analyses have been conducted, particularly for regions with high biodiversity, including the tropics. We used an intercalibrated version of the Defense Meteorological Satellite Program's Operational Linescan System (DMSP/OLS) images of stable nighttime lights to determine what proportion of original and current Brazilian vegetation types are experiencing measurable levels of artificial light and how this has changed in recent years. The percentage area affected by both detectable light and increases in brightness ranged between 0 and 35% for native vegetation types, and between 0 and 25% for current vegetation (i.e. including agriculture). The most heavily affected areas encompassed terrestrial coastal vegetation types (restingas and mangroves), Semideciduous Seasonal Forest, and Mixed Ombrophilous Forest. The existing small remnants of Lowland Deciduous and Semideciduous Seasonal Forests and of Campinarana had the lowest exposure levels to artificial light. Light pollution has not often been investigated in developing countries but our data show that it is an environmental concern.
Address Environment & Sustainability Institute, University of Exeter, Penryn, Cornwall, United Kingdom
Corporate Author Thesis
Publisher Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1932-6203 ISBN Medium
Area Expedition Conference
Notes PMID:28178352; PMCID:PMC5298803 Approved no
Call Number LoNNe @ kyba @ Serial 1650
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Author Onkelinx, T.
Title Comment on 'Age of enlightenment: long-term effects of outdoor aesthetic lights on bats in churches' Type Journal Article
Year 2017 Publication Royal Society Open Science Abbreviated Journal R. Soc. open sci.
Volume 4 Issue 11 Pages (down) 171312
Keywords Animals
Abstract This comment reanalyses the data presented in Rydell (Rydell 2017 R. Soc. open. sci. 4, 161077. (doi:10.1098/rsos.161077)) which were analysed using only very basic statistics like Fisher’s exact test and McNemar’s test. We demonstrate how the use of more advanced statistical methods can make better use of the available data, quantify the observed effects and strengthen the conclusions in Rydell (Rydell 2017 R. Soc. open. sci. 4, 161077. (doi:10.1098/rsos.161077)). We have no intention to discredit the original authors. Their analyses were basic but correct.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 2054-5703 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number LoNNe @ kyba @ Serial 1787
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Author Egri, Á.; Száz, D.; Farkas, A.; Pereszlényi, Á; Horváth, G.; Kriska, G.
Title Method to improve the survival of night-swarming mayflies near bridges in areas of distracting light pollution Type Journal Article
Year 2017 Publication Royal Society Open Science Abbreviated Journal R. Soc. open sci.
Volume 4 Issue 11 Pages (down) 171166
Keywords Animals; Lighting
Abstract Numerous negative ecological effects of urban lighting have been identified during the last decades. In spite of the development of lighting technologies, the detrimental effect of this form of light pollution has not declined. Several insect species are affected including the night-swarming mayfly Ephoron virgo: when encountering bridges during their mass swarming, these mayflies often fall victim to artificial lighting. We show a simple method for the conservation of these mayflies exploiting their positive phototaxis. With downstream-facing light-emitting diode beacon lights above two tributaries of the river Danube, we managed to guide egg-laying females to the water and prevent them from perishing outside the river near urban lights. By means of measuring the mayfly outflow from the river as a function of time and the on/off state of the beacons, we showed that the number of mayflies exiting the river's area was practically zero when our beacons were operating. Tributaries could be the sources of mayfly recolonization in case of water quality degradation of large rivers. The protection of mayfly populations in small rivers and safeguarding their aggregation and oviposition sites is therefore important.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 2054-5703 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number LoNNe @ kyba @ Serial 1786
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Author Shi, L.; Vasseur, L.; Huang, H.; Zeng, Z.; Hu, G.; Liu, X.; You, M.
Title Adult Tea Green Leafhoppers, Empoasca onukii (Matsuda), Change Behaviors under Varying Light Conditions Type Journal Article
Year 2017 Publication PloS one Abbreviated Journal PLoS One
Volume 12 Issue 1 Pages (down) e0168439
Keywords animals
Abstract Insect behaviors are often influenced by light conditions including photoperiod, light intensity, and wavelength. Understanding pest insect responses to changing light conditions may help with developing alternative strategies for pest control. Little is known about the behavioral responses of leafhoppers (Hemiptera: Cicadellidae) to light conditions. The behavior of the tea green leafhopper, Empoasca onukii Matsuda, was examined when exposed to different light photoperiods or wavelengths. Observations included the frequency of locomotion and cleaning activities, and the duration of time spent searching. The results suggested that under normal photoperiod both female and male adults were generally more active in darkness (i.e., at night) than in light. In continuous darkness (DD), the locomotion and cleaning events in Period 1 (7:00-19:00) were significantly increased, when compared to the leafhoppers under normal photoperiod (LD). Leafhoppers, especially females, changed their behavioral patterns to a two day cycle under DD. Under continuous illumination (continuous quartz lamp light, yellow light at night, and green light at night), the activities of locomotion, cleaning, and searching were significantly suppressed during the night (19:00-7:00) and locomotion activities of both females and males were significantly increased during the day (7:00-19:00), suggesting a shift in circadian rhythm. Our work suggests that changes in light conditions, including photoperiod and wavelength, can influence behavioral activities of leafhoppers, potentially affecting other life history traits such as reproduction and development, and may serve as a method for leafhopper behavioral control.
Address Key Laboratory of Integrated Pest Management of Fujian and Taiwan, China Ministry of Agriculture, Fuzhou, China
Corporate Author Thesis
Publisher Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1932-6203 ISBN Medium
Area Expedition Conference
Notes PMID:28103237 Approved no
Call Number LoNNe @ kyba @ Serial 1625
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