Biological processes are organized in time as innate rhythms defined by the period (τ), phase (peak [Φ] and trough time), amplitude (A, peak-trough difference) and mean level. The human time structure in its entirety is comprised of ultradian (τ < 20 h), circadian (20 h > τ < 28 h) and infradian (τ > 28 h) bioperiodicities. The circadian time structure (CTS) of human beings, which is more complicated than in lower animals, is orchestrated and staged by a brain central multioscillator system that includes a prominent pacemaker - the suprachiasmatic nuclei of the hypothalamus. Additional pacemaker activities are provided by the pineal hormone melatonin, which circulates during the nighttime, and the left and right cerebral cortices. Under ordinary circumstances this system coordinates the τ and Φ of rhythms driven by subservient peripheral cell, tissue and organ clock networks. Cyclic environmental, feeding and social time cues synchronize the endogenous 24 h clocks and rhythms. Accordingly, processes and functions of the internal environment are integrated in time for maximum biological efficiency, and they are also organized and synchronized in time to the external environment to ensure optimal performance and response to chall...Continue Reading
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Presence of insulin-renin-aldosterone-potassium interrelationship in normal subjects, disrupted in chronic hemodialysis patients
Effects of cyclic and continuous total enteral nutrition on 24-h rhythms of body temperature and urinary excretions
Abnormalities of thyrotrophin (TSH) evening rise and pulsatile release in haemodialysis patients: evidence for hypothalamic-pituitary changes in chronic renal failure
Alteration of period and amplitude of circadian rhythms in shift workers. With special reference to temperature, right and left hand grip strength
Effects of cyclic (nocturnal) total parenteral nutrition and continuous enteral nutrition on circadian rhythms of blood lipids, lipoproteins and apolipoproteins in humans
Agreement in endpoints from circadian rhythmometry on healthy humans beings living on different continents
Interindividual differences in a set of biological rhythms documented during the high arctic summer (79 degrees N) in three healthy subjects
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Participation of atrial natriuretic peptide (hANP) levels and arginine vasopressin (AVP) in aged persons with nocturia
Relationships of the circadian rhythms of thrombotic, ischemic, hemorrhagic, and arrhythmic events to blood pressure rhythms
Circadian rhythm period in reaction time to light signals: difference between right- and left-hand side
Differences between left- and right-hand reaction time rhythms: indications of shifts in strategies of human brain activity
The midnight to morning urinary cortisol increment is an accurate, noninvasive method for assessment of the hypothalamic-pituitary-adrenal axis
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Renal function and urinary excretion of electrolytes in patients receiving cyclic parenteral nutrition
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Sleep-wake schedule disorder disability: a lifelong untreatable pathology of the circadian time structure
The standardisation of terminology in nocturia: report from the Standardisation Sub-committee of the International Continence Society
Sleep-time blood pressure: Unique sensitive prognostic marker of vascular risk and therapeutic target for prevention
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Health consequences of electric lighting practices in the modern world: A report on the National Toxicology Program's workshop on shift work at night, artificial light at night, and circadian disruption
Depressive symptoms and actigraphy-measured circadian disruption predict head and neck cancer survival
β-Adrenergic receptors control brown adipose UCP-1 tone and cold response without affecting its circadian rhythmicity
Limiting feeding to the active phase reduces blood pressure without the necessity of caloric reduction or fat mass loss
Low-Grade Inflammation Aggravates Rotenone Neurotoxicity and Disrupts Circadian Clock Gene Expression in Rats
Working Time Society consensus statements: Circadian time structure impacts vulnerability to xenobiotics-relevance to industrial toxicology and nonstandard work schedules
Association between light exposure at night and manic symptoms in bipolar disorder: cross-sectional analysis of the APPLE cohort.
Melatonin suppression during a simulated night shift in medium intensity light is increased by 10-minute breaks in dim light and decreased by 10-minute breaks in bright light.
SARS-CoV-2/COVID-19 and physical distancing: risk for circadian rhythm dysregulation, advice to alleviate it, and natural experiment research opportunities
The circadian disruption of night work alters gut microbiota consistent with elevated risk for future metabolic and gastrointestinal pathology.
Do night and around-the-clock firefighters' shift schedules induce deviation in tau from 24 hours of systolic and diastolic blood pressure circadian rhythms?
Perspectives on the relevance of the circadian time structure to workplace threshold limit values and employee biological monitoring
Valsartan-mediated chronotherapy in spontaneously hypertensive rats via targeting clock gene expression in vascular smooth muscle cells
Actigraphy-based parameter tuning process for adaptive notch filter and circadian phase shift estimation.
Effect of circadian rhythm on the pain associated with preventive onabotulinumtoxinA injections for migraines.
Development of model based on clock gene expression of human hair follicle cells to estimate circadian time.
Report and Research Agenda of the American Geriatrics Society and National Institute on Aging Bedside-to-Bench Conference on Sleep, Circadian Rhythms, and Aging: New Avenues for Improving Brain Health, Physical Health, and Functioning
Efficacy of a new cancer treatment strategy based on eradication of tumor-initiating stem cells in a mouse model of Krebs-2 solid adenocarcinoma
Perinatal fluoxetine exposure disrupts the circadian response to a phase-shifting challenge in female rats
On-shift naps are associated with systolic and diastolic blood pressure level among night working nursing professionals.
Short communication: Early modification of the circadian organization of cow activity in relation to disease or estrus
Distinct control of PERIOD2 degradation and circadian rhythms by the oncoprotein and ubiquitin ligase MDM2
Perinatal photoperiod and childhood cancer: pooled results from 182,856 individuals in the international childhood cancer cohort consortium (I4C).
Association analysis between chronic obstructive pulmonary disease and polymorphisms in circadian genes
Activity, sleep and ambient light have a different impact on circadian blood pressure, heart rate and body temperature rhythms
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