Results 31 to 40 of about 127,418 (322)

Recent advances in modulators of circadian rhythms: an update and perspective

open access: yesJournal of Enzyme Inhibition and Medicinal Chemistry, 2020
Circadian rhythm is a universal life phenomenon that plays an important role in maintaining the multiple physiological functions and regulating the adaptability to internal and external environments of flora and fauna.
Shenzhen Huang   +5 more
doaj   +1 more source

Accurate timekeeping is controlled by a cycling activator in Arabidopsis. [PDF]

open access: yes, 2013
Transcriptional feedback loops are key to circadian clock function in many organisms. Current models of the Arabidopsis circadian network consist of several coupled feedback loops composed almost exclusively of transcriptional repressors.
Devisetty, Upendra K   +2 more
core   +1 more source

Circadian clocks and breast cancer [PDF]

open access: yes, 2016
Circadian clocks respond to environmental time cues to coordinate 24-hour oscillations in almost every tissue of the body. In the breast, circadian clocks regulate the rhythmic expression of numerous genes.
Blakeman, V   +3 more
core   +2 more sources

CLOCK and BMAL1 stabilize and activate RHOA to promote F-actin formation in cancer cells

open access: yesExperimental and Molecular Medicine, 2018
Cancer: Clocking the triggers for tumor progression Two proteins involved in regulating circadian rhythms may promote cancer tumor growth by changing the internal structures of cells.
Teng-jiao Ma   +6 more
doaj   +1 more source

Clock is important for food and circadian regulation of macronutrient absorption in mice

open access: yesJournal of Lipid Research, 2009
Clock genes respond to external stimuli and exhibit circadian rhythms. This study investigated the expression of clock genes in the small intestine and their contribution in the regulation of nutrient absorption by enterocytes.
Xiaoyue Pan, M. Mahmood Hussain
doaj   +1 more source

Heterogeneous expression of the core circadian clock proteins among neuronal cell types in mouse retina. [PDF]

open access: yesPLoS ONE, 2012
Circadian rhythms in metabolism, physiology, and behavior originate from cell-autonomous circadian clocks located in many organs and structures throughout the body and that share a common molecular mechanism based on the clock genes and their protein ...
Xiaoqin Liu   +2 more
doaj   +1 more source

Understanding the role of chromatin remodeling in the regulation of circadian transcription in Drosophila. [PDF]

open access: yes, 2015
Circadian clocks enable organisms to anticipate daily changes in the environment and coordinate temporal rhythms in physiology and behavior with the 24-h day-night cycle. The robust cycling of circadian gene expression is critical for proper timekeeping,
Chiu, Joanna C   +2 more
core   +1 more source

Circadian rhythms and post-transcriptional regulation in higher plants [PDF]

open access: yes, 2015
The circadian clock of plants allows them to cope with daily changes in their environment. This is accomplished by the rhythmic regulation of gene expression, in a process that involves many regulatory steps.
Romanowski, AndrĂ©s   +1 more
core   +3 more sources

Circadian clock proteins regulate neuronal redox homeostasis and neurodegeneration [PDF]

open access: yes, 2013
Brain aging is associated with diminished circadian clock output and decreased expression of the core clock proteins, which regulate many aspects of cellular biochemistry and metabolism.
Adam Q. Bauer   +25 more
core   +2 more sources

Rate variation during molecular evolution: creationism and the cytochrome c molecular clock [PDF]

open access: yes, 2017
Molecular clocks based upon amino acid sequences in proteins have played a major role in the clarification of evolutionary phylogenies. Creationist criticisms of these methods sometimes rely upon data that might initially seem to be paradoxical.
Hofmann James, R.
core   +1 more source

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