Abstract：
:Evidence of respiratory abnormalities and vulnerability to infection during a critical period of development have been implicated in Sudden Infant Death Syndrome (SIDS). Here we investigated whether the acute hypoxic ventilatory response (HVR) exhibits a heightened vulnerability to the endotoxin lipopolysaccharide (LPS) during a critical period of development. The acute HVR was measured 2h after an i.p. injection of saline or LPS (0.1mg/kg) at various postnatal (P) ages (P5, P10, or P20days). LPS attenuated the early (1-2min) and late (4-6min) phase of the acute HVR in P10 but not P5 or P20 rats. The P10 age group exhibited the largest increase in brainstem TNFα and iNOS mRNA expression following LPS. LPS also caused a higher mortality rate in P10 rats (48%) compared to P5 (12%) and P20 (0%) age groups. After stratifying LPS treated P10 rats into survivors vs non-survivors, only the latter exhibited an attenuated HVR (specifically the early phase). Thus, the heightened vulnerability to endotoxin exposure during this critical period of development is characterized by a depression of the ventilatory response to acute hypoxia in association with an increased incidence of mortality. These data share similarities with some of the circumstances surrounding a SIDS scenario, including evidence of infection, increased brainstem cytokine expression, a disturbance in respiratory control, and a peak incidence of mortality during a critical period of development.
journal_name
Respir Physiol Neurobioljournal_title
Respiratory physiology & neurobiologyauthors
Rourke KS,Mayer CA,MacFarlane PMdoi
10.1016/j.resp.2016.06.003subject
Has Abstractpub_date
2016-10-01 00:00:00pages
26-34eissn
1569-9048issn
1878-1519pii
S1569-9048(16)30101-Xjournal_volume
232pub_type
杂志文章abstract：:Carotid body (CB) chemoreceptors are the main sensors detecting systemic hypoxia. Studies in animals revealed that dopamine and histamine may serve as transmitters between the chemoreceptor cells and the afferent nerve. To gain insight whether histamine and dopamine could play a role in the human CB and thus be import...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2008.10.016
更新日期：2009-02-28 00:00:00
abstract：:The regulatory effect of substance P on respiration is mediated via neurokinin (NK) receptors. While previous studies suggest that NK-1 receptors are involved, little is known about the role NK-2 receptors in ventilatory responses to hypoxia. Ventilatory responses to acute hypoxia (8% O2 in N2) were measured by indire...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2007.07.012
更新日期：2007-11-15 00:00:00
abstract：:Chronic exposure to sustained hyperoxia alters the development of the respiratory control system, but the respiratory effects of chronic intermittent hyperoxia have rarely been investigated. We exposed newborn rats to short, repeated bouts of 30% O2 or 60% O2 (5 bouts h(-1)) for 4-15 days and then assessed their hypox...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2015.09.015
更新日期：2016-01-01 00:00:00
abstract：:The purpose of this study was to simultaneously examine left-ventricular (LV) function and pulmonary gas exchange during prolonged constant-rate cycling in an attempt to explain the exercise-induced impairment in gas exchange. Eleven competitive cyclists rode their racing bicycles on a computerized cycle trainer at 25...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2004.06.002
更新日期：2004-09-15 00:00:00
abstract：:Intermittent hypoxia induces plasticity in neural networks controlling breathing and cardiovascular function. Studies demonstrate that mechanisms causing cardiorespiratory plasticity rely on intracellular signalling pathways that are activated by specific neurotransmitters. Peptides such as serotonin, PACAP and orexin...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章,评审
doi：10.1016/j.resp.2016.03.012
更新日期：2016-06-01 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：:Part of the effective prediction of the pharmacokinetics of drugs (or toxic particles) requires extrapolation of experimental data sets from animal studies to humans. As the respiratory tracts of rodents and humans are anatomically very different, there is a need to study airflow and drug-aerosol deposition patterns i...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2018.11.003
更新日期：2019-02-01 00:00:00
abstract：:Using in vitro newborn rat brainstem-spinal cord preparations with and without the parafacial respiratory group (pFRG), we examined the effects of the volatile anaesthetic sevoflurane on the respiratory rhythm oscillators of the pFRG and the preBötzinger complex (preBötC). Our study indicated that sevoflurane depresse...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2010.06.016
更新日期：2010-08-31 00:00:00
abstract：:This study investigated the effects of four exposures to normobaric hypoxia (SIH group; FIO₂ = 0.120, N=10) or placebo-control normoxia (Control group; FIO₂ = 0.209, N=9) on cardio-respiratory responses to hypoxic exercise. Before and after the exposures all subjects performed a constant power test (CP) to exhaustion ...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章,评审
doi：10.1016/j.resp.2012.02.008
更新日期：2012-04-30 00:00:00
abstract：:This article constitutes a review of the studies performed by the group of the late A. Guz and other authors on the subjects of lung reflexes and perceptions of respiration. The experimental data suggest that the lung inflation and deflation reflexes are present in man, mediated by large myelinated afferent nerve fibr...
journal_title：Respiratory physiology & neurobiology
pub_type： 历史文章,杂志文章,评审
doi：10.1016/j.resp.2015.06.005
更新日期：2015-10-01 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：:The glycine receptor α3 subunit is known to be a target for cAMP/PKA-mediated phosphorylation and regulation. Mice that lack this subunit are apparently normal but the 5-HT1A-receptor mediated modulation of respiratory network activity is disturbed. Since the intracellular cAMP-concentration is reduced in mice that la...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2017.11.011
更新日期：2018-01-01 00:00:00
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journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2014.06.001
更新日期：2014-09-15 00:00:00
abstract：:In order to examine, whether the lobeline-induced cough is a true reflex or a voluntary effort to get rid of its irritating sensations in the upper respiratory tract, we systematically studied the cough response to lobeline, of subjects who were unable to make conscious discriminations i.e. were either comatose (n=4) ...
journal_title：Respiratory physiology & neurobiology
pub_type： 临床试验,杂志文章
doi：10.1016/j.resp.2004.09.001
更新日期：2005-01-15 00:00:00
abstract：:Submaximal exercise diaphragm blood flow (BF) is elevated in young chronic heart failure (CHF) rats, while it is unknown if this occurs in older animals. Respiratory and hindlimb muscle BFs (radiolabeled microspheres) were measured at rest and during submaximal exercise (20m/min, 5% grade) in older healthy (n=7) and C...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2017.05.002
更新日期：2017-09-01 00:00:00
abstract：BACKGROUND:During the COVID-19 outbreak, a very high number of infected patients developed pneumonia and many of them complicated with acute respiratory distress syndrome. The optimal management of respiratory failure and the role of lung ultrasound imaging in the evaluation of efficacy of treatment are unknown. METHO...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2020.103489
更新日期：2020-09-01 00:00:00
abstract：:Epidemiological studies have shown that children are more susceptible to adverse respiratory effects of passive smoking than adults. The goal of this study is to elucidate the possible neural mechanism induced by exposure to passive smoking during early life. Postnatal day (PD) 2 and PD 21 mice were exposed to side-st...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2015.11.009
更新日期：2016-03-01 00:00:00
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 ...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2006.05.007
更新日期：2007-02-15 00:00:00
abstract：:Although it has been recognized for more than a century, we still do not know how the two vagus nerves interact to produce Hering-Breuer reflex. In the current study, we tested the hypothesis that the vagus nerves interact via a multiplicative effect. We examined the Hering-Breuer reflex before and after unilateral (f...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2015.07.015
更新日期：2015-12-01 00:00:00
abstract：:We tested the hypotheses that: (1) carotid body size can be measured by computed tomographic angiography (CTA) with high inter-observer agreement, and (2) patients with sleep apnea exhibit larger carotid bodies than those without sleep apnea. A chart review was conducted from patients who underwent neck CTA and polyso...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2016.10.013
更新日期：2017-02-01 00:00:00
abstract：:We hypothesized that hypocapnia is responsible for increased expiratory resistance during NREM sleep. Hypocapnia was induced by hypoxic hyperventilation in 21 subjects (aged 29.4 ± 7.8 yrs, 10 women, BMI 24.4 ± 4.3 kg/m(2)). Isocapnic hypoxia was induced in 12 subjects of whom, 6 underwent hypocapnic hypoxia in the sa...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2011.04.004
更新日期：2011-07-31 00:00:00
abstract：:Chronic mountain sickness (CMS) or lack of adaptation to live in high altitudes is related to environmental hypoxia and excessive erythrocytosis (EE) (hemoglobin >21 and >19 g/dL for men and women, respectively). Diagnosis of CMS ("Qinghai CMS Score") is based on seven signs/symptoms (breathlessness and/or palpitation...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2013.06.006
更新日期：2013-08-15 00:00:00
abstract：:Ischemia-reperfusion injury is the major complication of abdominal aortic surgery, and it mainly affects the lower extremities and remote organs. In the present study, the electrophysiological alterations in diaphragm that underlie the post-operative respiratory dysfunction were investigated. Wistar Albino rats were r...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2016.12.015
更新日期：2017-04-01 00:00:00
abstract：:During embryonic development of homeothermic animals like birds and mammals transition from ectothermy to endothermy occurs especially in precocial species of both taxa. Based on some evolutionary aspects of the development of endothermy the review focuses on the prenatal development of endothermy and of the thermoreg...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章,评审
doi：10.1016/j.resp.2011.06.004
更新日期：2011-08-31 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：:The ratio of the diffusing capacity of the lung for carbon monoxide (DLCO) and for nitric oxide (DLNO) measured simultaneously is modified in patients with precapillary pulmonary hypertension (PH). The potential impact of targeted therapy on the DLCO/DLNO ratio is unknown. Simultaneous measurements of DLNO and DLCO we...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2020.103467
更新日期：2020-08-01 00:00:00
abstract：:We questioned the assumption that polycythemia is essential for adaptation to chronic hypoxia. Thus, the objective of our study was to determine if anemic Epo-TAg(h) mice could survive in hypoxia despite low oxygen carrying capacity. We explored the possibility that ventilatory acclimatisation is involved in the strat...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2005.08.006
更新日期：2006-08-01 00:00:00
abstract：OBJECTIVE:Consequences of OSAS include excessive daytime sleepiness, divided sleep architecture, impaired neurocognitive performance, and significant psychosocial disruption. In this study we aimed to evaluate sleep spindles changes before and after PAP treatment in patient with OSA. METHODS:Seventy-three consecutive ...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2017.09.008
更新日期：2018-01-01 00:00:00
abstract：:We used quantitative single photon emission computed tomography to estimate the proportion of the observed redistribution of blood flow and ventilation that is due to lung tissue shift with a change in posture. Seven healthy volunteers were studied awake, breathing spontaneously. Regional blood flow and ventilation we...
journal_title：Respiratory physiology & neurobiology
pub_type： 杂志文章
doi：10.1016/j.resp.2006.11.001
更新日期：2007-06-15 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
