Abstract：
:It had been demonstrated previously that the circadian patterns of activity and state of arousal are not essential for the manifestation of the daily patterns of pulmonary ventilation (V(E)), tidal volume (V(T)) and breathing frequency (f). In this study we investigated the extent of the linkage between the circadian pattern of breathing and those of body temperature (T(b)) and metabolic rate (oxygen consumption, V(O2), and carbon dioxide production, V(CO2)). Rats were instrumented for measurements of T(b) (by telemetry), and placed in a chamber for continuous 13-day period of measurement of breathing (by a modification of the barometric methodology), and of V(O2) and V(CO2) (by an open flow method). After the first 4 days in control conditions under a 12 h light:12 h dark (L:D) cycle, a perturbation was introduced on day 4, with an L-phase prolongation of 12 h, and on day 9, with an D-phase prolongation of 12 h. During the control days 1-4, all variables had daily oscillations (higher values in D), in phase with each other. During the perturbations (days 4-13), changes in T(b), V(O2) and V(CO2), averaged over the whole period, correlated significantly better with f than with V(T). Day-by-day X-Y loops indicated that V (E), V(T) and f could lead significantly the changes of T(b), V(O2) and V(CO2), and that these relations changed throughout the perturbation period. In addition, f and V(T) did not change necessarily in phase with each other. It is concluded that neither the oscillation in T(b) nor that in metabolism can be considered the direct cause of the daily oscillation of breathing. Presumably, the circadian pattern of breathing reflects the interplay of the daily patterns of many variables, none acting as the primary guide of the breathing daily rhythm.
journal_name
Respir Physiol Neurobioljournal_title
Respiratory physiology & neurobiologyauthors
Mortola JPdoi
10.1016/j.resp.2006.05.007subject
Has Abstractpub_date
2007-02-15 00:00:00pages
137-46issue
2eissn
1569-9048issn
1878-1519pii
S1569-9048(06)00178-9journal_volume
155pub_type
杂志文章abstract：BACKGROUND:A sustained elevation in respiratory drive following removal of the inducing stimulus is known as respiratory long-term facilitation (rLTF). We investigated whether an acute exposure to intermittent negative airway pressure (INAP) elicits rLTF in humans. METHOD:13 healthy males (20.9 ± 2.8 years) undertook ...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2019.05.016
更新日期：2019-09-01 00:00:00
abstract：:Ziziphora clinopodioides has been frequently used as an anti asthmatic plant in traditional medication. Recent work explores the anti-asthmatic activity of Z. clinopodioides in allergen-induced asthmatic mice. Intraperitoneal sensitization followed by intranasal challenge were given with ovalbumin (allergen) to develo...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2019.04.005
更新日期：2019-08-01 00:00:00
abstract：:A computational fluid dynamics (CFD) modelling approach is used to study the unsteady respiratory airflow dynamics within a human lung. The three-dimensional asymmetric bifurcation model of the central airway based on the morphological data given by Horsfield et al. (J. Appl. Physiol. 67 (1971) 207) was used in the pr...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/s0034-5687(01)00337-1
更新日期：2002-04-01 00:00:00
abstract：:Sleep disordered breathing (SDB) with recurrent apnea is a major health problem affecting several million adult men and women. Humans with SDB are prone to develop hypertension. Studies on rodents established that exposure to chronic intermittent hypoxia (CIH) alone is sufficient to induce hypertension similar to that...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章,评审
doi：10.1016/j.resp.2015.01.001
更新日期：2015-04-01 00:00:00
abstract：:Recent evidence suggests that surface electromyography of the parasternal intercostals (EMGpara) can be a non-invasive alternative to diaphragmatic EMG (EMGdi) for estimating neural respiratory drive (NRD) during cardiopulmonary exercise testing (CPET). The purpose of this study was to determine if non-respiratory mus...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2017.03.003
更新日期：2017-08-01 00:00:00
abstract：:Serotonin (5-HT), norepinephrine and orexins (ORX) are the three best established mediators of wake-related activation of hypoglossal (XII) motoneurons that innervate the muscles of the tongue. Since the tongue's use is temporarily closely aligned with the rest-activity cycle, we tested whether expression of mRNA for ...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2013.04.024
更新日期：2013-09-15 00:00:00
abstract：:We investigated the contributions of obesity on multidimensional aspects of dyspnea on exertion (DOE) in patients referred for clinical cardiopulmonary exercise testing (CPET). Ratings of perceived breathlessness (RPB, Borg scale 0-10) were collected in obese (BMI ≥ 30; n = 47) and nonobese (BMI ≤ 25; n = 27) patients...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2019.103365
更新日期：2020-03-01 00:00:00
abstract：:During embryonic development, blood flow is needed not only to nourish the developing embryo but is also important for shaping the vascular network such that it becomes hemodynamically efficient. The first blood vessels form a network called the capillary plexus. After the onset of blood flow, the capillary plexus rem...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章,评审
doi：10.1016/j.resp.2011.03.026
更新日期：2011-08-31 00:00:00
abstract：:We examined whether recruitment maneuvers (RMs) with gradual increase in airway pressure (RAMP) provide better outcome than continuous positive airway pressure (CPAP) in paraquat-induced acute lung injury (ALI). Wistar rats received saline intraperitoneally (0.5 mL, CTRL) or paraquat (15 mg/kg, ALI). Twenty-four hours...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2009.08.010
更新日期：2009-10-31 00:00:00
abstract：:Bronchial responsiveness during methacholine (MCh) challenge was analysed in an elastase-induced mouse model of emphysema to explore the magnitude of the response in this model. Swiss mice were intratracheally instilled with saline or elastase (0.3 or 0.6 U). Twenty days afterward, mechanical ventilation data were col...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2014.01.009
更新日期：2014-04-01 00:00:00
abstract：:Maximal O(2) consumption (V(O)(2) max) is an index of integrated cardiopulmonary function. After having defined it, discussed its limitation, and described its measurement, we present data during and after space flight and simulation. During gravity withdrawal, V(O)(2) max stays unchanged. It suddenly drops when the s...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2009.03.012
更新日期：2009-10-01 00:00:00
abstract：:Vascular endothelial growth factor (VEGF) and erythropoietin (EPO) exert neurotrophic and neuroprotective effects in the CNS. We recently demonstrated that VEGF, EPO and their receptors (VEGF-R2, EPO-R) are expressed in phrenic motor neurons, and that cervical spinal VEGF-R2 and EPO-R activation elicit long-lasting ph...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2012.10.014
更新日期：2013-02-01 00:00:00
abstract：:The physiologic function of nasal nitric oxide (NO) release is unknown. In prior experiments, topical NG-nitro-L-arginine methyl ester (L-NAME) on nasal mucosa reduced exhaled nasal NO output and caused daytime sleepiness. We hypothesized that nasal NO output is reduced at night during the sleep period. We measured ex...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2006.08.002
更新日期：2007-04-16 00:00:00
abstract：:Exposure to tobacco smoke is a major risk factor for the sudden infant death syndrome. Nicotine is thought to be the ingredient in tobacco smoke that is responsible for a multitude of cardiorespiratory effects during development, and pre- rather than postnatal exposure is considered to be most detrimental. Nicotine in...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章,评审
doi：10.1016/j.resp.2005.05.004
更新日期：2005-11-15 00:00:00
abstract：:Recently, we have shown that the expired CO2 gas volume versus tidal volume (VCO2-VT) curve is a useful tool for assessing unevenness of ventilation because it allows the separation of tidal volume into three functional compartments: (a) the CO2-free expired air (V0), (b) the transitional volume (Vtr), (c) the alveola...
journal_title：Respiratory physiology & neurobiology
pub_type： 临床试验,杂志文章
doi：10.1016/j.resp.2004.01.005
更新日期：2004-06-25 00:00:00
abstract：:In day 15 chicken embryos, we determined the time course responses of acid-base balance and hematological respiratory variables during 24h exposure to 15, 20, 40 or 90% O(2), in the presence of 5% CO(2). Hypercapnic respiratory acidosis was initially (2h) only slightly (∼20%) compensated by metabolic alkalosis in norm...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2012.10.002
更新日期：2013-01-15 00:00:00
abstract：:Chemoreception in fish is critical for sensing changes in the chemical composition of the external and internal environments and is often the first step in a cascade of events leading to cardiorespiratory and metabolic adjustments. Of paramount importance is the ability to sense changes in the levels of the three resp...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章,评审
doi：10.1016/j.resp.2015.06.007
更新日期：2016-04-01 00:00:00
abstract：:Airway responses to intravenous (i.v.) and inhaled (i.h.) delivery of methacholine (MCh) in BALB/c and C57BL/6 mouse strains have been compared with and without ovalbumin (OVA)-induced airway inflammation. Bronchial reactivity to MCh was assessed in anaesthetised and tracheostomised animals by using an animal ventilat...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2008.12.005
更新日期：2009-02-28 00:00:00
abstract：:We previously showed that nasal pressure support ventilation (nPSV) can lead to active inspiratory laryngeal narrowing, which originates from the stimulation of bronchopulmonary receptors. Among the three major types of bronchopulmonary receptors, which are variably stimulated by lung distension, C-fiber endings are r...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2014.07.014
更新日期：2014-10-01 00:00:00
abstract：:Pulmonary surfactant fulfils diverse functions at the lung air-liquid interface of all air-breathing vertebrates. Neurohormonal regulation of surfactant synthesis and secretion is highly conserved among non-mammalian amniotes. Although the pattern of surfactant lipid maturation is similar among species, the onset and ...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章,评审
doi：10.1016/j.resp.2011.05.015
更新日期：2011-08-31 00:00:00
abstract：:The aim of this study was to examine whether lung function and respiratory muscle strength are associated with weightlifting strength and body composition in non-athletic males. A total 51 males with resistance training experience participated. One-repetition maximum tests were performed for the bench press, squat and...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2021.103616
更新日期：2021-01-14 00:00:00
abstract：BACKGROUND:Aquaporin 5 (AQP5) is widely expressed in various organ and tissues. In light of the novel oncogenic properties of aquaporins (AQPs), here we investigated the effect of AQP5 knockdown by RNAi on transmembrane osmotic water permeability, cell migration potential and cell volume regulation ability. METHODS:AQ...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2011.02.001
更新日期：2011-05-31 00:00:00
abstract：BACKGROUND:The impact of aerobic training on pulmonary function by modulating gene expression of estrogen receptor-alpha (ERα), sex hormones and 25-hydroxy vitamin D (Vit D) in postmenopausal women (PMW) with Vit D deficiency is uncertain. OBJECTIVE:The purpose of this study was to examine the effect of 12 weeks of mo...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2020.103510
更新日期：2020-10-01 00:00:00
abstract：:Phrenic motoneurons are located in the cervical spinal cord and innervate the diaphragm muscle, the main inspiratory muscle in mammals. Similar to other skeletal muscles, phrenic motoneurons and diaphragm muscle fibers form motor units which are the final element of neuromotor control. In addition to their role in sus...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章,评审
doi：10.1016/j.resp.2011.06.028
更新日期：2011-10-15 00:00:00
abstract：:The cardiovascular system undergoes major changes in stress with space flight primarily related to the elimination of the head-to-foot gravitational force. A major observation has been that the central venous pressure is not elevated early in space flight yet stroke volume is increased at least early in flight. Recent...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2009.07.017
更新日期：2009-10-01 00:00:00
abstract：:This special issue of Respiratory Physiology and Neurobiology surveys a broad range of topics focused on the neurochemical control of breathing. A variety of approaches have integrated the neurochemistry of breathing with the physiology of individual neurons, with the neuroanatomy of brainstem and forebrain respirator...
journal_title：Respiratory physiology & neurobiology
pub_type： 社论
doi：10.1016/j.resp.2008.07.021
更新日期：2008-12-10 00:00:00
abstract：:Seizure-induced cardiorespiratory autonomic dysfunction is a major cause of sudden unexpected death in epilepsy (SUDEP), and the underlying mechanism is unclear. Seizures lead to increased synthesis, and release of glutamate, pituitary adenylate cyclase activating polypeptide (PACAP), and other neurotransmitters, and ...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2016.01.003
更新日期：2016-06-01 00:00:00
abstract：:These experiments were designed to determine the effects of EEG state on the response of rats to intermittent hypoxia and to test the hypotheses that short-term potentiation (STP) and ventilatory long term facilitation (vLTF) are state dependent; and that neurons with NMDA receptors in the dorso-ventral pontine respir...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2010.03.005
更新日期：2010-04-30 00:00:00
abstract：:This project aimed to investigate the direction of artificial sputum movement during mechanical ventilation (MV) and bagging (MH) using a tube model. Three solutions of artificial sputum (ultrasonic gel, viscosity 100, 200 and 300 poise (P)) were prepared. About 1 ml of gel was placed in a glass tube connected to a te...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/s1569-9048(02)00071-x
更新日期：2002-09-04 00:00:00
abstract：:The respiratory mucociliary epithelium is a synchronized and highly effective waste-disposal system. It uses mucus as a vehicle, driven by beating cilia, to transport unwanted particles, trapped in the mucus, away from the respiratory system. The ciliary machinery can function in at least two different modes: a low ra...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章,评审
doi：10.1016/j.resp.2008.05.010
更新日期：2008-11-30 00:00:00
