Abstract:
:The objective of the present study was to evaluate seasonal periodicity in the prevalence of Helicobacter pylori. A prospective study was performed on 1076 consecutive patients who were investigated in our hospital over a 3-year span because of epigastric complaints. Our findings indicate a significant accumulation of positive Helicobacter pylori tests in October. Gastric acidity, gender, and age did not influence Helicobacter pylori infection significantly. There was no significant correlation between potential seasonal influence on the diagnosis of ulcer disease and the seasonal fluctuation of Helicobacter pylori infection. The seasonality was confirmed by cosinor analysis for the absolute frequencies of H. pylori infections and also for the number of cases positive for H. pylori per number of presenting patients per month. A seasonal concept of a sensitivity threshold for positive Helicobacter pylori testing is introduced, taking into account such factors as immune system, nutrition, and medication status.
journal_name
Chronobiol Intjournal_title
Chronobiology internationalauthors
Raschka C,Schorr W,Koch HJdoi
10.3109/07420529909016947subject
Has Abstractpub_date
1999-11-01 00:00:00pages
811-9issue
6eissn
0742-0528issn
1525-6073journal_volume
16pub_type
杂志文章abstract::Background: Numerous clinical studies have evaluated valsartan and found more efficacious control of blood pressure (BP) variability when administered before sleep. The treatment leads to improved outcomes when compared to administration upon awakening. The mechanism underlying this etiology is not fully understood. T...
journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.1080/07420528.2019.1610419
更新日期:2019-08-01 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
pub_type: 杂志文章
doi:10.1080/07420520802397228
更新日期:2008-09-01 00:00:00
abstract::COVID-19 and metabolic syndrome are devastating pandemics. Effective control of metabolic parameters and their dysfunction may help prevent or minimize the acute and devastating effects of SARS-CoV-2 by reducing the local inflammatory response and blocking the entry of the virus into cells. With such consideration in ...
journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.1080/07420528.2020.1772810
更新日期:2020-06-01 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
pub_type: 杂志文章
doi:10.1080/07420520902820970
更新日期:2009-04-01 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
pub_type: 杂志文章
doi:10.3109/07420528.2012.719958
更新日期:2012-10-01 00:00:00
abstract::Data on sleep or circadian abnormalities and metabolic disturbances in euthymic bipolar disorders are scarce and based on small sample sizes. The aim of this study was to explore the associations between sleep disturbances, chronotype and metabolic components in a large sample of euthymic patients with bipolar disorde...
journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.1080/07420528.2017.1332071
更新日期:2017-01-01 00:00:00
abstract::A preliminary study was conducted to evaluate the change in nocturnal concentrations of testosterone, luteinizing hormone, growth hormone, prolactin, thyroxine, and cortisol following a control day (no exercise) and on a day in which exercise was performed. Exercise consisted of 90 min of cycling at 70% of each subjec...
journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.3109/07420528909056940
更新日期:1989-01-01 00:00:00
abstract::Eight diurnally active (approximately 0730-1100 hr) adults (41-61 yr) suffering from nocturnal asthma volunteered for a double-blind, cross-over randomized study of a once-daily dosing (600-900 mg/24 hr) of Armophylline (Rorer s.a., France), a sustained-release theophylline given either at 0800 hr or 2000 hr for 8-day...
journal_title:Chronobiology international
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.3109/07420528709083530
更新日期:1987-01-01 00:00:00
abstract::One of the supposed mechanisms that may lead to breast cancer (BC) is an alteration of circadian gene expression and DNA methylation. We undertook an integrated approach to identify methylation pattern of core circadian promoter regions in BC patients with regard to clinical features. We performed a quantitative methy...
journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.1080/07420528.2019.1617732
更新日期:2019-08-01 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
pub_type: 杂志文章
doi:10.3109/07420528.2011.603170
更新日期:2011-10-01 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
pub_type: 杂志文章
doi:10.1080/07420520802106819
更新日期:2008-04-01 00:00:00
abstract::The season of birth has been suggested to influence the development of some diseases, but its role in lung fibrosis seems to not have been studied previously. The aim of this study was to investigate the relation between the season of birth and fibrotic abnormalities as detected radiologically in high-resolution compu...
journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.1080/07420520701420725
更新日期:2007-01-01 00:00:00
abstract::The effect of varying the dose-delivery time within a 24 h period (12:12 light-dark cycle) on the immunomodulatory properties of corn oil administered by gavage to 120 B6C3F1 female mice was investigated. Mice, housed in six separate boxes equipped with timers to regulate light onset and offset (staggered by 4 h incre...
journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.3109/07420529909019085
更新日期:1999-03-01 00:00:00
abstract::In the contemporary era, when life habits are largely determined by social needs and individual preferences, sleep is nevertheless affected by seasonal environmental changes. Japan has large seasonal and geographical alterations of photoperiod and climate. Japan does not adopt the daylight saving time (DST) system, ma...
journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.1080/07420528.2018.1443118
更新日期:2018-07-01 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
pub_type: 杂志文章
doi:10.1080/07420520902926033
更新日期:2009-05-01 00:00:00
abstract::Current evidence suggests that acute depression is associated with reduced total hippocampal volume and regional atrophy. Here, using structural magnetic resonance imaging, we assayed linear effects of chronotype on total hippocampal volume and morphology. Later chronotype was associated with localised atrophy in the ...
journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.1080/07420528.2018.1455056
更新日期:2018-07-01 00:00:00
abstract::Time-dependent variations in the vasodilator effects of beta-adrenergic agonists terbutaline (Ter) and dobutamine (Dob) were studied in isolated rings of rat thoracic aorta in both endothelium-intact and endothelium-denuded preparations. Rats were housed in light from 08:00 to 20:00 and in darkness from 20:00 to 08:00...
journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.3109/07420529808998680
更新日期:1998-03-01 00:00:00
abstract::The course of swelling after maxillo-facial surgery was investigated by measuring the distance from the tragus to the pogonium. The post-surgical swelling does not diminish continuously, but decreases in a circaseptan periodic mode. The reactive periodicity is preferentially induced not by the injury, but by the surgi...
journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.3109/07420528409059133
更新日期:1984-01-01 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
pub_type: 杂志文章
doi:10.1080/07420528.2018.1446021
更新日期:2018-07-01 00:00:00
abstract::Equity is a humanitarian issue that gained strength during the transition from the 20th to the 21st century due to the mounting global discussion and social crisis involving human rights, health, and work. This article aims at (1) introducing the concept of equity as it applies to work environments, particularly to si...
journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.1081/cbi-200044991
更新日期:2004-01-01 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
pub_type: 杂志文章
doi:10.1080/07420528.2018.1466800
更新日期:2018-06-01 00:00:00
abstract::Although chronic alcohol intake is associated with widespread disruptions of sleep-wake cycles and other daily biological rhythms in both human alcoholics and experimental animals, the extent to which the chronobiological effects of alcohol are mediated by effects on the underlying circadian pacemaker remains unknown....
journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.1081/cbi-200053496
更新日期:2005-01-01 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
pub_type: 杂志文章
doi:10.1081/cbi-100107968
更新日期:2001-11-01 00:00:00
abstract::A double-blind randomized parallel-group trial was undertaken to evaluate the influence of the dosing time of sustained-release ketoprofen (SRK) on its acceptability and efficacy. The SRK was prescribed for 2 weeks (200 mg once a day) to 117 outpatients with osteoarthritis of the knee and/or hip. One group received SR...
journal_title:Chronobiology international
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.3109/07420529409055898
更新日期:1994-04-01 00:00:00
abstract::Immune cell trafficking is crucial for surveillance and effector functions of the immune system. Circadian rhythms of the hypothalamic-pituitary-adrenal (HPA) axis and of cortisol have been implicated in circadian redistribution of circulating lymphocytes and granulocytes. However, information regarding the diurnal re...
journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.3109/07420528.2013.775654
更新日期:2013-06-01 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
pub_type: 杂志文章
doi:10.1080/07420520903044398
更新日期:2009-07-01 00:00:00
abstract::Circadian rhythms in mammals are driven by a central clock in the suprachiasmatic nucleus (SCN). In vitro, temperature cycles within the physiological range can act as potent entraining cues for biological clocks. We altered the body temperature (Tc) rhythm in rats by manipulating energy intake (EI) to determine wheth...
journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.3109/07420528.2015.1112395
更新日期:2016-01-01 00:00:00
abstract::Previous studies have demonstrated seasonal variation in the incidence of acute myocardial infarction (AMI) with an increase in cases during the winter months. However, they did not assess whether ST-elevation MI (STEMI) and non-ST-elevation MI (NSTEMI) exhibit similar changes. The object of this study was to compare ...
journal_title:Chronobiology international
pub_type: 杂志文章
doi:10.1080/07420520701800611
更新日期:2007-01-01 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
pub_type: 杂志文章,评审
doi:10.1081/cbi-100001175
更新日期:2001-01-01 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
pub_type: 杂志文章
doi:10.1081/cbi-120024220
更新日期:2003-09-01 00:00:00