Tag

Circadian rhythms
15
Feb

Redox changes in obesity, metabolic syndrome, and diabetes

February 15, 2021
Bato Korac, Andjelika Kalezic, Vanja Pekovic-Vaughan, Aleksandra Korac, Aleksandra Jankovic, Redox changes in obesity, metabolic syndrome, and diabetes, Redox Biology, 2021, 101887, ISSN 2213-2317,https://doi.org/10.1016/j.redox.2021.101887.(https://www.sciencedirect.com/science/article/pii/S2213231721000355) Abstract “Life is an instantaneous encounter of circulating matter and flowing energy” (Jean Giaja, Serbian physiologist), is one of the most elegant definitions not only of life but the relationship of...
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05
Feb

Light pollution linked to preterm births, reduced birth weights

February 5, 2021
University of Colorado Denver researcher finds nighttime brightness linked to 13% increase in preterm birth likelihood 28-Jan-2021 2:15 PM EST, by University of Colorado Denver Newswise — In a first-of-its-kind study, researchers discovered that light pollution leads to more than just wasted energy and washed-out starlight–it can increase the likelihood of a preterm birth by almost 13%. Laura Argys,...
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02
Jan

Intense light as anticoagulant therapy in humans

January 2, 2021
Oyama Y, Shuff S, Davizon-Castillo P, Clendenen N, Eckle T (2020) Intense light as anticoagulant therapy in humans. PLoS ONE 15(12): e0244792. https://doi.org/10.1371/journal.pone.0244792 Abstract Blood coagulation is central to myocardial ischemia and reperfusion (IR) injury. Studies on the light elicited circadian rhythm protein Period 2 (PER2) using whole body Per2-/- mice found deficient platelet function and reduced...
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05
Jul

The Interrelationship Between Inflammatory Cytokines and Skeletal Muscle Decay From the Viewpoint of Circadian Rhythms

July 5, 2020
Xuguang Luo, Xinhua Yang, Yanping Yang, Hairong Li, Huilin Cui & Ximei Cao (2020) The interrelationship between inflammatory cytokines and skeletal muscle decay from the viewpoint of circadian rhythms, Archives of Physiology and Biochemistry, DOI: 10.1080/13813455.2020.1782435 Abstract Circadian rhythms affect a variety of physiological processes. Disruption of circadian rhythms causes many diseases, most of which are associated with inflammation. Disruption...
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26
Apr

The circadian clock and darkness control natural competence in cyanobacteria

April 26, 2020
Taton, A., Erikson, C., Yang, Y. et al. The circadian clock and darkness control natural competence in cyanobacteria. Nat Commun 11, 1688 (2020). https://doi.org/10.1038/s41467-020-15384-9 Abstract The cyanobacterium Synechococcus elongatus is a model organism for the study of circadian rhythms. It is naturally competent for transformation—that is, it takes up DNA from the environment, but the underlying mechanisms are unclear. Here,...
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20
Jan

Night-Time Shift Work and Related Stress Responses: A Study on Security Guards

January 20, 2020
Int. J. Environ. Res. Public Health 2020, 17(2), 562; https://doi.org/10.3390/ijerph17020562 Abstract Work-related stress can induce a break in homeostasis by placing demands on the body that are met by the activation of two different systems, the hypothalamic–pituitary–adrenal axis and the sympathetic nervous system. Night-shift work alters the body’s exposure to the natural light–dark schedule and disrupts circadian (daily)...
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22
Dec

The hypothalamic-pituitary-adrenal axis as a substrate for stress resilience: Interactions with the circadian clock.

December 22, 2019
Front Neuroendocrinol. 2019 Dec 18:100819. doi: 10.1016/j.yfrne.2019.100819. [Epub ahead of print] Abstract Stress, primarily processed via the hypothalamic-pituitary-adrenal (HPA) axis, engages biological pathways throughout the brain and body which promote adaptation and survival to changing environmental demands. Adaptation to environmental challenges is compromised when these pathways are no longer functioning optimally. The physiological and behavioral mechanisms...
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19
Nov

Holland Aims to Bring Back Its Starry Nights

November 19, 2019,
Source: https://www.citylab.com/life/2019/11/dark-sky-night-stars-netherlands-light-pollution-map-nacht/601846/?fbclid=IwAR0iykJlcWMe24n1bRZexY9j61Qvcs8LntAOsfOYPQkKu070D77kzbebcE0 Campaigners want government agencies and companies to turn off the lights so citizens can rediscover the beauty of darkness. SOPHIE KNIGHT NOVEMBER 18, 2019 AMSTERDAM—As winter creeps across the Northern Hemisphere and daylight hours dwindle, it can be hard to appreciate the long, dark nights. But in the Netherlands, there’s a national campaign to...
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17
Nov

The physiological significance of the circadian dynamics of the HPA axis: Interplay between circadian rhythms, allostasis and stress resilience.

November 17, 2019
Horm Behav. 2019 Apr;110:77-89. doi: 10.1016/j.yhbeh.2019.02.018. Epub 2019 Mar 15. Abstract Circadian time-keeping mechanisms preserve homeostasis by synchronizing internal physiology with predictable variations in the environment and temporally organize the activation of physiological signaling mechanisms to promote survival and optimize the allocation of energetic resources. In this paper, we highlight the importance of the robust circadian...
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13
Oct

8 Ways Blue Light Destroys Your Retina and You

October 13, 2019
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