Tag

Light/Dark Cycles
10
Jul

UN Environment Program – IMPACT OF LIGHT POLLUTION ON DIFFERENT TAXA OF MIGRATORY SPECIES

July 10, 2021,
IMPACT OF LIGHT POLLUTION ON DIFFERENT TAXA OF MIGRATORY SPECIES(Prepared by Ms. Laetitia Nunny on behalf of the CMS Secretariat) Extract 1.1.3 Biological impacts of light pollutionOrganisms have evolved under consistent light conditions with day and night, lunar cycles and seasonality (Seymoure, 2018). Natural light is used by wildlife as a resource and to gain...
Read More
13
Jun

Circadian clocks and insulin resistance

June 13, 2021
Stenvers, D.J., Scheer, F.A.J.L., Schrauwen, P. et al. Circadian clocks and insulin resistance. Nat Rev Endocrinol 15, 75–89 (2019). https://doi.org/10.1038/s41574-018-0122-1 Abstract Insulin resistance is a main determinant in the development of type 2 diabetes mellitus and a major cause of morbidity and mortality. The circadian timing system consists of a central brain clock in the hypothalamic suprachiasmatic nucleus and various peripheral...
Read More
16
May

Circadian rhythms and the gut microbiome synchronize the host’s metabolic response to diet

May 16, 2021
Gutierrez Lopez DE, Lashinger LM, Weinstock GM, Bray MS. Circadian rhythms and the gut microbiome synchronize the host’s metabolic response to diet. Cell Metab. 2021 May 4;33(5):873-887. doi: 10.1016/j.cmet.2021.03.015. Epub 2021 Mar 30. PMID: 33789092. Abstract The molecular circadian clock and symbiotic host-microbe relationships both evolved as mechanisms that enhance metabolic responses to environmental challenges....
Read More
25
Sep

Sleep and immunity in times of COVID-19

September 25, 2020
Silva ESME, Ono BHVS, Souza JC. Sleep and immunity in times of COVID-19. Rev Assoc Med Bras (1992). 2020 Sep 21;66Suppl 2(Suppl 2):143-147. doi: 10.1590/1806-9282.66.S2.143. PMID: 32965373. SUMMARY BACKGROUND Analyze how the COVID-19 (SARS-CoV-2) pandemic and its social restriction measures affect sleep quality and the immunological system. METHODS An integrative bibliographical review was carried out...
Read More
20
Aug

Effects of lockdown on human sleep and chronotype during the COVID-19 pandemic

August 20, 2020
Leone MJ, Sigman M, Golombek DA. Effects of lockdown on human sleep and chronotype during the COVID-19 pandemic. Curr Biol. 2020;30(16):R930-R931. doi:10.1016/j.cub.2020.07.015 Abstract The COVID-19 pandemic [1] resulted in many countries imposing a lockdown, which in turn reduces sunlight exposure and alters daily social schedules. Since these are the main entrainment factors for biological rhythms [2],...
Read More
22
Jul

Addressing the health impacts of night shift work

July 22, 2020
By David Ray, July 7, 2020 Night shift work has been a common feature of industrial economies for decades, and it has long been known that working through the night can negatively impact upon health. In recent years, the evidence base about these health impacts has expanded considerably. Here, Professor David Ray introduces this evidence and highlights how...
Read More
21
Jul

A heart clock rhythm orchestra – a different tune at different times in the day

July 21, 2020
by Amal Mohamed Dameer on July 21, 2020 in Clocks in the Spotlight. Have you ever had your blood pressure checked at the doctor’s? Did you assume your blood pressure stayed the same all day? It does not! It is in concert in a circadian rhythm orchestra with low base notes during the night and high peak notes during the...
Read More
11
Feb

Continuous Light-Induced PCOS-Like Changes in Reproduction, Metabolism, and Gut Microbiota in Sprague-Dawley Rats

February 11, 2020
Front. Microbiol., 21 January 2020 | https://doi.org/10.3389/fmicb.2019.03145 Abstract The interplay between genetic and environmental risk factors contributes to the pathogenesis of metabolic disease. Polycystic ovary syndrome (PCOS) is the most common endocrine and metabolic disorder in women of reproductive age. Circadian rhythm disruption is an important risk factor for PCOS. In this study, we evaluated the...
Read More