Effects of long-term microgravity exposure in space on circadian rhythms of heart rate variability.

abstract：:In Drosophila circadian rhythms persist in constant darkness (DD). The small ventral Lateral Neurons (s-LNv) mainly control the behavioral circadian rhythm in consortium with the large ventral Lateral Neurons (l-LNv) and dorsal Lateral Neurons (LNd). It is believed that the molecular oscillations of clock genes are th...

journal_title：Chronobiology international

authors： Veleri S,Wülbeck C

更新日期：2004-05-01 00:00:00

abstract：:The circadian timing system adapts most of the mammalian physiology and behaviour to the 24 h light/dark cycle. This temporal coordination relies on endogenous circadian clocks present in virtually all tissues and organs and implicated in the regulation of key cellular processes including metabolism, transport and sec...

journal_title：Chronobiology international

authors： Gréchez-Cassiau A,Feillet C,Guérin S,Delaunay F

更新日期：2015-01-01 00:00:00

abstract：:The objective of this study was to test the hypothesis that there is seasonal variation in the incidence of Stanford type A aortic dissection (SA-AoD) among patients admitted to our cardiovascular surgical service. A sinusoidal logistic regression model was used to analyze event data for 6081 calendar days. A cyclic p...

journal_title：Chronobiology international

authors： Efird JT,O'Neal WT,Davies SW,O'Neal JB,Kypson AP

更新日期：2014-11-01 00:00:00

abstract：:Coenzyme Q10 (CoQ10) or ubiquinone, a redox component of the mitochondrial electron transport chains, is a powerful antioxidant and membrane stabilizer that may prevent cellular damage during myocardial ischemia and reperfusion therapy. Coenzyme Q10 has been used primarily as an adjuvant therapy for some cardiomyopath...

journal_title：Chronobiology international

authors： Reis F,Hermida RC,Souza I,Maldonado J,Tavares P,Fontes-Ribeiro CA,Teixeira HM,Alcobia T,Almeida L,Teixeira F

更新日期：2002-05-01 00:00:00

abstract：:Thermoregulatory processes have long been implicated in the initiation of human sleep. In this paper, we review our own studies conducted over the last decade showing a crucial role for melatonin as a mediator between the thermoregulatory and arousal system in humans. Distal heat loss, via increased skin temperature, ...

journal_title：Chronobiology international

authors： Kräuchi K,Cajochen C,Pache M,Flammer J,Wirz-Justice A

更新日期：2006-01-01 00:00:00

abstract：:Physiological and biomechanical constraints as well as their fluctuations throughout the day must be considered when studying determinant factors in the preferred pedaling rate of elite cyclists. The aim of this study was to monitor the diurnal variation of spontaneous pedaling rate and movement kinematics over the cr...

journal_title：Chronobiology international

authors： Moussay S,Bessot N,Gauthier A,Larue J,Sesboüe B,Davenne D

更新日期：2003-09-01 00:00:00

abstract：:Circadian rhythms of plasma insulin, cortisol, and glucose concentrations were examined in scotosensitive (reproductively sensitive to inhibitory effects of short daylengths) and scotorefractory male and female Syrian hamsters (Mesocricetus auratus) maintained on short (LD 10:14) and long (LD 14:10) daylengths. The ba...

journal_title：Chronobiology international

authors： de Souza CJ,Meier AH

更新日期：1987-01-01 00:00:00

abstract：:Concerns about health problems due to the increasing use of mobile phones are growing. Excessive use of mobile phones can affect the quality of sleep as one of the important issues in the health literature and general health of people. Therefore, this study investigated the relationship between the excessive use of mo...

journal_title：Chronobiology international

authors： Eyvazlou M,Zarei E,Rahimi A,Abazari M

更新日期：2016-01-01 00:00:00

abstract：:In order to optimize chronotherapeutic schedules (designs), we examined the interindividual differences in chronopharmacologic effects of drugs with consideration of the following three factors: (a) inherited factors of direct relevance to chronopharmacology (genetic variability, gender-related differences) as well as...

journal_title：Chronobiology international

authors： Reinberg AE,Ashkenazi IE

更新日期：1993-12-01 00:00:00

abstract：:The validity of a commercially available wearable device for measuring total sleep time was examined in a sample of well-trained young athletes during night-time sleep periods and daytime naps. Participants wore a FitBit HR Charge on their non-dominant wrist and had electrodes attached to their face and scalp to enabl...

journal_title：Chronobiology international

authors： Sargent C,Lastella M,Romyn G,Versey N,Miller DJ,Roach GD

更新日期：2018-06-01 00:00:00

abstract：:Treatment-related changes in neurobiological rhythms are of increasing interest to psychologists, psychiatrists, and biological rhythms researchers. New methods for analyzing change in rhythms are needed, as most common methods disregard the rich complexity of biological processes. Large time series data sets reflect ...

journal_title：Chronobiology international

authors： Blackford JU,Salomon RM,Waller NG

更新日期：2009-02-01 00:00:00

abstract：:In Cushing's syndrome, the cortisol rhythm is impaired and can be associated with the disruption in the rhythmic expression of clock genes. In this study, we evaluated the expression of CLOCK, BMAL1, CRY1, CRY2, PER1, PER2, PER3 genes in peripheral blood leukocytes of healthy individuals (n = 13) and Cushing's disease...

journal_title：Chronobiology international

authors： Soares VR,Silva Martins C,Martinez EZ,Araujo LD,Roa SLR,Silva LR,Moreira AC,De Castro M

更新日期：2020-06-01 00:00:00

abstract：:Workers who meet the criteria for shift work disorder (SWD) have elevated levels of risk for various health and behavioral problems. However, the impact of having SWD on shiftworkers engaged in rapid-rotation schedules is unknown. Moreover, the risk factors for the occurrence of SWD remain unclear. To clarify these is...

journal_title：Chronobiology international

authors： Asaoka S,Aritake S,Komada Y,Ozaki A,Odagiri Y,Inoue S,Shimomitsu T,Inoue Y

更新日期：2013-05-01 00:00:00

abstract：:The aim of this study was to determine the relationship between pilot workload, performance, subjective fatigue, sleep duration, number of sectors and flight duration during short-haul operations. Ninety pilots completed a NASA Task Load Index, Psychomotor Vigilance Task and a Samn-Perelli fatigue scale on top-of-desc...

journal_title：Chronobiology international

authors： Arsintescu L,Chachad R,Gregory KB,Mulligan JB,Flynn-Evans EE

更新日期：2020-08-24 00:00:00

abstract：:Circadian rhythmicity of the structural morphometric model of rat endocrine pancreas has been studied in 24 Wistar female rats, four months old, kept in LD 12:12. The following parameters were evaluated: the volume fractions of nucleus and cytoplasm of exocrine cells, the size distribution and number in unit tissue vo...

journal_title：Chronobiology international

authors： Sforza C,Morini M,Dolci C,Vizzotto L,Carandente F

更新日期：1990-01-01 00:00:00

abstract：:The circadian system is organized in a hierarchy of multiple oscillators, with the suprachiasmatic nucleus (SCN) as the master oscillator in mammals. The SCN is formed by a group of coupled cell oscillators. Knowledge of this coupling mechanism is essential to understanding entrainment and the expression of circadian ...

journal_title：Chronobiology international

authors： Silva CA,Melo LIM,Pires AR,Barbalho JC,Melo AV,Fernandes DAC,Oliveira EB,Azevedo CVM,Cambras T,Díez-Noguera A,Fontenele-Araujo J

更新日期：2018-01-01 00:00:00

abstract：:A physiological dose of orally administered melatonin shifts circadian rhythms in humans according to a phase-response curve (PRC) that is nearly opposite in phase with the PRCs for light exposure: melatonin delays circadian rhythms when administered in the morning and advances them when administered in the afternoon ...

journal_title：Chronobiology international

authors： Lewy AJ,Ahmed S,Jackson JM,Sack RL

更新日期：1992-10-01 00:00:00

abstract：:Therapy with oral anticoagulants (OACs) is a risk factor for cerebral hemorrhage (CH). Although different studies have been undertaken to investigate the timing of the onset of major cardiovascular events, no data exist on temporal patterns of the onset of CH in subjects treated with OACs. The aim of this study is to ...

journal_title：Chronobiology international

authors： Fabbian F,Manfredini R,De Giorgi A,Gallerani M,Cavazza M,Grifoni S,Fabbri A,Cervellin G,Ferrari AM,Imberti D,PROMPT Registry Investigators.

更新日期：2016-01-01 00:00:00

abstract：:Earlier we reported that in a number of experiments pineal melatonin production in rats under constant laboratory conditions displayed seasonal rhythms but subsequently were not always able to confirm this. Since there was no indication under which conditions such rhythms may be present, we performed four consecutive ...

journal_title：Chronobiology international

authors： Bartsch H,Mecke D,Probst H,Küpper H,Seebald E,Salewski L,Stehle T,Bartsch C

更新日期：2012-10-01 00:00:00

abstract：:The golden hamster (Mesocricetus auratus) is one of the most frequently used laboratory animals, particularly in chronobiological studies. One reason is its very robust and predictable rhythms, although the question arises whether this is an inbreeding effect or rather is typical for the species. We compared the daily...

journal_title：Chronobiology international

authors： Weinert D,Fritzsche P,Gattermann R

更新日期：2001-11-01 00:00:00

abstract：:Circadian rhythms in mammals are adjusted daily to the environmental day/night cycle by photic input via the retinohypothalamic tract (RHT). Retinal ganglion cells (RGCs) of the RHT constitute a separate light-detecting system in the mammalian retina used for irradiance detection and for transmission to the circadian ...

journal_title：Chronobiology international

authors： Hannibal J

更新日期：2006-01-01 00:00:00

abstract：:Shiftwork, particularly that including night work, causes disruption of biological rhythms and perturbation of the social and family life that can negatively affect performance efficiency, health, and social relations. Adverse effects can manifest themselves in the short term as sleep disturbances, shiftlag syndrome, ...

journal_title：Chronobiology international

authors： Costa G

更新日期：1997-03-01 00:00:00

abstract：:The circadian clock regulates the daily rhythms of several physiological and behavioral processes. Disruptions in clock genes have been associated with obesity and related comorbidities. This study aimed to analyze the association of DNA methylation signatures at circadian rhythm pathway genes with body mass index (BM...

journal_title：Chronobiology international

authors： Ramos-Lopez O,Samblas M,Milagro FI,Riezu-Boj JI,Crujeiras AB,Martinez JA,Project M

更新日期：2018-07-01 00:00:00

abstract：:Serious adverse cardiovascular events, including myocardial infarction, sudden cardiac death, and stroke, frequently result from rupture of atherosclerotic plaques with superimposed thrombosis and exhibit a pronounced circadian rhythmicity, peaking in the morning hours. Two potentially synergistic mechanisms play a pa...

journal_title：Chronobiology international

authors： Aronson D

更新日期：2001-01-01 00:00:00

abstract：:In 24h studies of bone marrow (BM), circadian stage-dependent variations were demonstrated in the proliferative activity of BM cells from subsets of 35 healthy diurnally active men. On an average, the percentage of total BM cells in deoxyribonucleic acid (DNA) synthesis phase was 188% greater at midday than at midnigh...

journal_title：Chronobiology international

authors： Smaaland R,Sothern RB,Laerum OD,Abrahamsen JF

更新日期：2002-01-01 00:00:00

abstract：:We have recently demonstrated that the outcome of repeated social defeat (SD) on behavior, physiology and immunology is more negative when applied during the dark/active phase as compared with the light/inactive phase of male C57BL/6 mice. Here, we investigated the effects of the same stress paradigm, which combines a...

journal_title：Chronobiology international

authors： Bartlang MS,Savelyev SA,Johansson AS,Reber SO,Helfrich-Förster C,Lundkvist GB

更新日期：2014-11-01 00:00:00

abstract：:A number of Djungarian hamsters (Phodopus sungorus) of our institute show activity patterns that seem incompatible with proper adjustment to a periodic environment. The activity onset of those animals is continuously delayed, whereas the activity offset is stably coupled to "lights-on", leading to compression of activ...

journal_title：Chronobiology international

authors： Schottner K,Weinert D

更新日期：2010-01-01 00:00:00

abstract：:Diurnal variation in muscle performance has been well documented in the past few years, but almost exclusively in the male population. The possible effects of the menstrual cycle on human circadian rhythms have remained equivocal, particularly in the context of muscle strength. The purpose of the study was to analyze ...

journal_title：Chronobiology international

authors： Bambaeichi E,Reilly T,Cable NT,Giacomoni M

更新日期：2004-07-01 00:00:00

abstract：:The present study was designed to investigate the effect of Ramadan fasting on feelings, dietary intake, rating of perceived exertion (RPE) and repeated high-intensity short-term maximal performance. Thirteen physically active men (age: 21.2 ± 2.9 years, height: 175.6 ± 5.6 cm, body-mass: 72.4 ± 8.6 kg) performed a 5-...

journal_title：Chronobiology international

authors： Boukhris O,Hsouna H,Chtourou L,Abdesalem R,BenSalem S,Tahri N,Trabelsi K,Stannard SR,Chtourou H

更新日期：2019-01-01 00:00:00

abstract：:Using both previously published findings and entirely new data, we present evidence in support of the argument that the circadian dysfunction of advancing age in the healthy human is primarily one of failing to transduce the circadian signal from the circadian timing system (CTS) to rhythms "downstream" from the pacem...

journal_title：Chronobiology international

authors： Monk TH,Kupfer DJ

更新日期：2000-05-01 00:00:00