abstract：:Daily schedules of many organisms, including birds, are thought to affect fitness. Timing in birds is based on circadian clocks that have a heritable period length, but fitness consequences for individuals in natural environments depend on the scheduling of entrained clocks. This chronotype, i.e., timing of an individ...

journal_title：Chronobiology international

authors： Lehmann M,Spoelstra K,Visser ME,Helm B

更新日期：2012-10-01 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 length of the free-running period (τ) affects how an animal re-entrains after phase shifts of the light-dark (LD) cycle. Those with shorter periods adapt faster to phase advances than those with longer periods, whereas those with longer periods adapt faster to phase delays than those with shorter periods. The free...

journal_title：Chronobiology international

authors： Eastman CI,Molina TA,Dziepak ME,Smith MR

更新日期：2012-10-01 00:00:00

abstract：:Although daily rhythms regulate multiple aspects of human physiology, rhythmic control of the metabolome remains poorly understood. The primary objective of this proof-of-concept study was identification of metabolites in human plasma that exhibit significant 24-h variation. This was assessed via an untargeted metabol...

journal_title：Chronobiology international

authors： Ang JE,Revell V,Mann A,Mäntele S,Otway DT,Johnston JD,Thumser AE,Skene DJ,Raynaud F

更新日期：2012-08-01 00:00:00

abstract：:The effect of stocking density on the locomotor activity of African catfish C. gariepinus under different light regimes was investigated. C. gariepinus were stocked under different densities (1, 5, or 10 fish/tank), and their locomotor activity recorded under light-dark (LD), constant light (LL), constant darkness (DD...

journal_title：Chronobiology international

authors： Vera LM,Al-Khamees S,Herv M

更新日期：2011-11-01 00:00:00

abstract：:The first aim of the study was to assess clock-time patterning of work-related injuries (WRIs) of firemen (FM) of Saône et Loire-71 (France) during the 4-yr span of 1 January 2004 to 31 December 2007. FM of this service are legally required to log every WRI and seek its evaluation by the medical service, whether the W...

journal_title：Chronobiology international

authors： Riedel M,Berrez S,Pelisse D,Brousse E,Forget C,Marlot M,Smolensky MH,Touitou Y,Reinberg A

更新日期：2011-10-01 00:00:00

abstract：:Lung cancer is the leading cause of cancer deaths worldwide. Both incidence and mortality of lung cancer are especially high in Hungary. Several investigations suggested recently that month of birth (MOB) is associated with the risks of several nonmalignant disorders as well as some malignant disorders. Only a few stu...

journal_title：Chronobiology international

authors： Kapitány B,Döme P,Döme B,Rihmer Z

更新日期：2011-08-01 00:00:00

abstract：:The aim of the study was to evaluate the influence of chronotype (morning-type versus evening-type) living in a fixed sleep-wake schedule different from one's preferred sleep schedules on the time course of neurobehavioral performance during controlled extended wakefulness. The authors studied 9 morning-type and 9 eve...

journal_title：Chronobiology international

authors： Taillard J,Philip P,Claustrat B,Capelli A,Coste O,Chaumet G,Sagaspe P

更新日期：2011-07-01 00:00:00

abstract：:Police officers are required to work irregular hours, which induces stress, fatigue, and sleep disruption, and they have higher rates of chronic disease and mortality. Cortisol is a well-known "stress hormone" produced via activation of the hypothalamic-pituitary-adrenal axis. An abnormal secretion pattern has been as...

journal_title：Chronobiology international

authors： Wirth M,Burch J,Violanti J,Burchfiel C,Fekedulegn D,Andrew M,Zhang H,Miller DB,Hébert JR,Vena JE

更新日期：2011-05-01 00:00:00

abstract：:Sleep-wake regulation involves reciprocal interactions between sleep- and wake-promoting processes that inhibit one another. To uncover the signatures of the opponent processes underlying ultradian sleep cycles, principal component analysis was performed on the sets of 16 single-Hz log-transformed electroencephalograp...

journal_title：Chronobiology international

authors： Putilov AA

更新日期：2011-05-01 00:00:00

abstract：:Few studies have focused on the influence of circadian typology on drug use, and none has considered the use of illegal drugs and hazardous alcohol consumption. This study analyzes the influence of circadian typology on several types of drug consumption (habitual or sporadic), hangover symptoms (past 12 mos), and, mor...

journal_title：Chronobiology international

authors： Prat G,Adan A

更新日期：2011-04-01 00:00:00

abstract：:The avian circadian system is composed of the retina, the mammalian homolog region of the suprachiasmatic nucleus (SNC), and the pineal gland. The retina, itself, displays many rhythmic physiological events, such as movements of photoreceptor cells, opsin expression, retinal reisomerization, and melatonin and dopamine...

journal_title：Chronobiology international

authors： Lima LH,Santos KP,Lauro Castrucci AM

更新日期：2011-03-01 00:00:00

abstract：:The molecular circadian clock mechanism is highly conserved between mammalian and avian species. Avian circadian timing is regulated at multiple oscillatory sites, including the retina, pineal, and hypothalamic suprachiasmatic nucleus (SCN). Based on the authors' previous studies on the rat ovary, it was hypothesized ...

journal_title：Chronobiology international

authors： Tischkau SA,Howell RE,Hickok JR,Krager SL,Bahr JM

更新日期：2011-02-01 00:00:00

abstract：:The authors estimated the benchmark durations (BMDs) and their 95% lower confidence limit (BMDL) for the reference duration of shiftwork for weight gain. A 14-yr prospective cohort study was conducted in male workers at a Japanese steel company (n = 7254) who had received annual health check-ups between 1991 and 2005....

journal_title：Chronobiology international

authors： Tanaka K,Sakata K,Oishi M,Morimoto H,Nakada S,Uetani M,Nogawa K,Suwazono Y

更新日期：2010-10-01 00:00:00

abstract：:Acute thrombotic events frequently occur in the early morning among hyperlipidemic patients. The activity of plasminogen activator inhibitor-1 (PAI-1), a potent inhibitor of the fibrinolytic system, oscillates daily, and this is considered one mechanism that underlies the morning onset of acute thrombotic events in hy...

journal_title：Chronobiology international

authors： Hayashida S,Kuramoto Y,Koyanagi S,Oishi K,Fujiki J,Matsunaga N,Ikeda E,Ohdo S,Shimeno H,Soeda S

更新日期：2010-10-01 00:00:00

abstract：:Appreciation of chronotherapy in hypertension continues to lag, despite clear demonstrations by many studies of (i) clinically relevant dosing-time differences of the beneficial and adverse effects of most blood pressure (BP) medications and (ii) significant association between reduced sleep-time BP decline of non-dip...

journal_title：Chronobiology international

authors： Portaluppi F,Smolensky MH

更新日期：2010-09-01 00:00:00

abstract：:The phase and period responses to short light pulses were studied in the jerboa, a seasonal, hibernating, nocturnal rodent from the Atlas region in Morocco. The jerboa, which is a saltatory species, showed precise activity onsets and offsets under a light-dark (LD) cycle using infrared captors to record locomotor acti...

journal_title：Chronobiology international

authors： El Moussaouiti R,Bouhaddou N,Sabbar M,Cooper HM,Lakhdar-Ghazal N

更新日期：2010-08-01 00:00:00

abstract：:Using structural equation modeling, it can be shown that long weekly working hours and work on weekends, nights, and in shifts have detrimental effects on psychovegetative health. Employees' reported subjective work-life balance also decreases with increasing number of hours worked/week, days worked on weekends, or at...

journal_title：Chronobiology international

authors： Wirtz A,Nachreiner F

更新日期：2010-07-01 00:00:00

abstract：:Very little is known about the prevalence of morning work and its relationship with sleep and fatigue. The present study obtained data from a representative sample of the Swedish population (N = 5489) to address this limitation in the literature. The results show that 15% of the population commenced work, at least occ...

journal_title：Chronobiology international

authors： Akerstedt T,Kecklund G,Selén J

更新日期：2010-07-01 00:00:00

abstract：:Serotonergic neurotransmission and the master circadian CLOCK gene are physiological modulators of the circadian system. In addition, both are involved in the physiopathology of metabolic syndrome (MS). The authors sought to examine the potential effect of the gene-gene interaction between the functional 44-bp inserti...

journal_title：Chronobiology international

authors： Sookoian S,Gianotti TF,Burgueño A,Pirola CJ

更新日期：2010-07-01 00:00:00

abstract：:In mammals, non-visual responses to light involve intrinsically photosensitive melanopsin-expressing retinal ganglion cells (ipRGCs) that receive synaptic inputs from rod and cone photoreceptors. Several studies have shown that cones also play a role in light entrainment, photic responses of the suprachiasmatic nucleu...

journal_title：Chronobiology international

authors： Dollet A,Albrecht U,Cooper HM,Dkhissi-Benyahya O

更新日期：2010-06-01 00:00:00

abstract：:Ceftazidime, a third-generation cephalosporin, is widely used for the treatment of Pseudomonas aeruginosa infections. The aims of the present study were to characterize the pharmacokinetics of ceftazidime and to estimate the T > MIC against P. aeruginosa, after its intramuscular (i.m.) administration at two different ...

journal_title：Chronobiology international

authors： Monfrinotti A,Ambros L,Montoya L,Prados AP,Rebuelto M

更新日期：2010-05-01 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：:The aims of this study were to examine the genetic and environmental influences on diurnal preference and sleep quality, the association between these phenotypes, the genetic and environmental influences on this association, and the magnitude of overlap between these influences. Using a twin design, data on diurnal pr...

journal_title：Chronobiology international

authors： Barclay NL,Eley TC,Buysse DJ,Archer SN,Gregory AM

更新日期：2010-01-01 00:00:00

abstract：:We analyzed the effect of natural solar insolation and artificial photoperiodic conditions on melatonin MT1 receptor expression of a tropical rodent, Funambulus pennanti. Melatonin mediates reproductive and circadian responses and regulates the production of a large number of cytokines, including interleukin-2 (IL-2),...

journal_title：Chronobiology international

authors： Lahiri S,Haldar C

更新日期：2009-12-01 00:00:00

abstract：:Many immune parameters exhibit daily and circadian oscillations, including the number of circulating cells and levels of cytokines in the blood. Mice also have a differential susceptibility to lipopolysaccharide (LPS or endotoxin)-induced endotoxic shock, depending on the administration time in the 24 h light-dark (LD...

journal_title：Chronobiology international

authors： Marpegan L,Leone MJ,Katz ME,Sobrero PM,Bekinstein TA,Golombek DA

更新日期：2009-10-01 00:00:00

abstract：:Freshwater crayfish have three known photoreceptive systems: the compound eyes, extraretinal brain photoreceptors, and caudal photoreceptors. The primary goal of the work described here was to explore the contribution of the brain photoreceptors to circadian locomotory activity and define some of the underlying neural...

journal_title：Chronobiology international

authors： Sullivan JM,Genco MC,Marlow ED,Benton JL,Beltz BS,Sandeman DC

更新日期：2009-08-01 00:00:00

abstract：:Night shiftworkers often complain of disturbed sleep during the day. This could be partly caused by morning sunlight exposure during the commute home, which tends to maintain the circadian clock on a daytime rhythm. The circadian clock is most sensitive to the blue portion of the visible spectrum, so our aim was to de...

journal_title：Chronobiology international

authors： Sasseville A,Benhaberou-Brun D,Fontaine C,Charon MC,Hebert M

更新日期：2009-07-01 00:00:00

abstract：:General anesthesia combined with surgery is commonly associated with post-operative stress-response in humans. Effects on the hypothalamic-pituitary-adrenal axis (HPA) during and after anesthesia are correlated with the magnitude of surgery and choice of anesthetics. The aim of our study in rats was to characterize th...

journal_title：Chronobiology international

authors： Dispersyn G,Sage D,Challet E,Pain L,Touitou Y

更新日期：2009-05-01 00:00:00

abstract：:Although there are significant intra-individual differences in self-reported diurnal preference, as measured by validated questionnaires, the relative contribution of exogenous and endogenous factors to self-reported diurnal preference largely remains to be investigated. The present study examined which items from the...

journal_title：Chronobiology international

authors： Ellis J,von Schantz M,Jones KH,Archer SN

更新日期：2009-04-01 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：:The rods in the retina are responsible for night vision, whereas the cone system enables day vision. We studied whether rod function in humans exhibits an endogenous circadian rhythm and if changes occur in conditions of prolonged darkness. Seven healthy subjects (mean age+/-SD: 25.6+/-12.3 yr) completed a 4.5-day pro...

journal_title：Chronobiology international

authors： Danilenko KV,Plisov IL,Wirz-Justice A,Hebert M

更新日期：2009-01-01 00:00:00

abstract：:Recently, we found that the reactivity of ambulatory blood pressure (BP) to everyday physical activities is highest in the morning. All participants in that study slept normally at night and freely chose their activity levels, which did not allow a separation of any circadian influence on the BP response from the effe...

journal_title：Chronobiology international

authors： Jones H,George K,Edwards B,Atkinson G

更新日期：2008-11-01 00:00:00

abstract：:To compare the behavioral effects of sleep-loss sleepiness (performance impairment due to sleep loss) and sleep inertia (period of impaired performance that follows awakening), mean response latencies and number of lapses from a visual simple reaction-time task were analyzed. Three experimental conditions were designe...

journal_title：Chronobiology international

authors： Miccoli L,Versace F,Koterle S,Cavallero C

更新日期：2008-09-01 00:00:00

abstract：:Intolerance to shift work may result from individual susceptibility to an internal desynchronization. Some shift workers (SW) who show desynchronization of their circadian rhythms (e.g., sleep-wake, body temperature, and grip strength of both hands) exhibit symptoms of SW intolerance, such as sleep alteration, persist...

journal_title：Chronobiology international

authors： Reinberg A,Ashkenazi I

更新日期：2008-07-01 00:00:00

abstract：:The aim of this study was to examine the impact of brief, unscheduled naps during work periods on alertness and vigilance in coastal pilots along the Great Barrier Reef. On certain routes, the duration of the work period can extend well beyond 24 h. Seventeen coastal pilots volunteered for the study, representing almo...

journal_title：Chronobiology international

authors： Ferguson SA,Lamond N,Kandelaars K,Jay SM,Dawson D

更新日期：2008-04-01 00:00:00

abstract：:It has long been recognized that older shift workers may have shorter and more disturbed day sleeps between successive night shifts than their younger colleagues. This has given rise to considerable concern over the safety of aging shift workers because of the increasing age of the work force and increases in retireme...

journal_title：Chronobiology international

authors： Folkard S

更新日期：2008-04-01 00:00:00

abstract：:Previous studies found students who both work and attend school undergo a partial sleep deprivation that accumulates across the week. The aim of the present study was to obtain information using a questionnaire on a number of variables (e.g., socio-demographics, lifestyle, work timing, and sleep-wake habits) considere...

journal_title：Chronobiology international

authors： Fischer FM,Nagai R,Teixeira LR

更新日期：2008-04-01 00:00:00

abstract：:Recent studies of shift-working women have reported that excessive exposure to light at night (LAN) may be a risk factor for breast cancer. However, no studies have yet attempted to examine the co-distribution of LAN and breast cancer incidence on a population level with the goal to assess the coherence of these earli...

journal_title：Chronobiology international

authors： Kloog I,Haim A,Stevens RG,Barchana M,Portnov BA

更新日期：2008-02-01 00:00:00

abstract：:Changes in rectal temperature during mild exercise in the middle of the rising (11:00 h) and falling (23:00 h) phases of the circadian rhythm of resting core temperature have been compared. Seven healthy males were studied at rest, while exercising on a cycle ergometer (60 min at 80 W), and during the first 30 min of ...

journal_title：Chronobiology international

authors： Waterhouse J,Aizawa S,Nevill A,Edwards B,Weinert D,Atkinson G,Reilly T

更新日期：2007-01-01 00:00:00