Abstract:
:Inconsistent findings regarding the experimental nasal obstruction on respiratory functions in small animals have been reported. The purpose of this study was to investigate the impact of short term forced oral breathing on respiratory functions as well as the therapeutic implication of esophageal intubation in BALB/c mice. Thirty BALB/c mice were randomized equally to two groups: an experimental group and control group. Oral breathing was induced by applying petrolatum ointment in nostrils for occlusion both nasal cavities. Esophageal tube was inserted to enlarge the oropharyngeal airway in the experimental mice. Respiratory parameters were measured by barometric whole-body plethysmography (WBP) in the following condition: normal nasal breathing; nasal breathing loading in a soft bag; forced oral breathing loading in a soft bag; forced oral breathing loading in a soft bag after undergoing esophageal intubation. After applying petrolatum ointment of nostrils, all the mice switch to oral breathing with apparent discomfort (bradypnea). Nasal occlusion was associated with a decrease in the average respiratory rate (268±36 vs. 90±10 breaths/min; P<0.01) and an increase in Penh (0.67±0.14 vs. 19.23±2.12; P<0.01). After undergoing esophagus intubation, these mice switched to oral breathing with less discomfort. Compared with the control mice, respiratory rate (175±25 vs. 90±10) was higher; the Penh (8.84±1.05 vs. 18.09±2.03; P<0.01) was lower. Short term forced oral breathing induced by nasal occlusion caused respiratory insufficiency in mice. Stenotic oropharyngeal airway was supposed to be one of the most important factors. Enlarging oropharyngeal airway by esophagus intubation could improve the respiratory insufficiency under nasal occlusion.
journal_name
Respir Physiol Neurobioljournal_title
Respiratory physiology & neurobiologyauthors
Xie J,Xi Y,Zhang Q,Lai K,Zhong Ndoi
10.1016/j.resp.2014.09.024subject
Has Abstractpub_date
2015-01-01 00:00:00pages
37-41eissn
1569-9048issn
1878-1519pii
S1569-9048(14)00261-4journal_volume
205pub_type
杂志文章abstract::Respiratory sinus arrhythmia (RSA) is the beat-to-beat fluctuation in heart rate at the frequency of the respiratory cycle. While it is common to study RSA under conditions of controlled breathing, where respiratory frequency, and sometimes tidal volume and inspiratory:expiratory ratio are controlled, the effect of co...
journal_title:Respiratory physiology & neurobiology
pub_type: 杂志文章,评审
doi:10.1016/j.resp.2010.04.021
更新日期:2010-11-30 00:00:00
abstract:OBJECTIVE:Prolonged partial obstruction (PPO) is a common finding in sleep studies. Although not verified, it seems to emerge in deep sleep. We study the effect of PPO on sleep architecture or sleep electroencephalography (EEG) frequency. METHODS:Fifteen OSA patients, 15 PPO + OSA patients and 15 healthy subjects unde...
journal_title:Respiratory physiology & neurobiology
pub_type: 杂志文章
doi:10.1016/j.resp.2018.05.009
更新日期:2018-09-01 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::Stimuli within the lung can cause the sensations of pain, ache, irritation and urge-to-cough. In general these are abolished or inhibited by vagal section or vagal anaesthesia, or local anaesthesia within the airways. They are present in patients with functional high cervical spinal cord transaction and after general ...
journal_title:Respiratory physiology & neurobiology
pub_type: 社论,评审
doi:10.1016/j.resp.2008.09.012
更新日期:2009-05-30 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::We evaluated, by CFD simulation, effects of accessory ostium (AO) on maxillary sinus ventilation. A three-dimensional nasal model was constructed from an adult CT scan with two left maxillary AOs (sinus I) and one right AO (sinus II), then compared to an identical control model with all AOs sealed (sinuses III and IV)...
journal_title:Respiratory physiology & neurobiology
pub_type: 杂志文章
doi:10.1016/j.resp.2012.06.026
更新日期:2012-08-15 00:00:00
abstract::Pulmonary mechanics [static (Est) and dynamic (Edyn) elastances, resistive (DeltaP1) and viscoelastic pressures (DeltaP2)], histology, and bronchoalveolar lavage fluid (BALF) from BALB/c mice were analysed 1, 24, 48 and 72 h after intravenous injection of saline or Bothrops jararaca crude venom [0.3 (V0.3) or 1 (V1) m...
journal_title:Respiratory physiology & neurobiology
pub_type: 杂志文章
doi:10.1016/j.resp.2003.10.002
更新日期:2004-01-15 00:00:00
abstract::Neonatal bronchopulmonary dysplasia (BPD) might lead to an increased risk for brain injury. The present study aims to investigate the effects of neonatal BPD on neuronal apoptosis in the hippocampus and cognitive function and to explore the underlying mechanisms. The results revealed that BPD model rat pups exhibited ...
journal_title:Respiratory physiology & neurobiology
pub_type: 杂志文章
doi:10.1016/j.resp.2015.09.011
更新日期:2016-01-01 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::To clarify the potential of dopamine to alter airway tone in the presence of different bronchoconstrictor stimuli, changes in airway function following dopamine administrations were characterized when the bronchial tone was elevated by stimulating the histaminic or cholinergic pathway. Airway resistance, tissue dampin...
journal_title:Respiratory physiology & neurobiology
pub_type: 杂志文章
doi:10.1016/j.resp.2018.10.006
更新日期:2019-01-01 00:00:00
abstract::This investigation examined the effects of a six-week inspiratory resistance training (IRT) on metabolic health biomarkers, pulmonary function, and endurance in obese individuals. Twenty-eight obese adults (BMI > 27 kg/m2 Taiwan obesity criteria) were randomly assigned to either IRT (IRT; N = 16) or sham control (PLA;...
journal_title:Respiratory physiology & neurobiology
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.resp.2019.103285
更新日期:2020-02-01 00:00:00
abstract::The trigeminal and olfactory systems interact during sensory processing of odor. Here, we investigate odor-evoked modulations of brainstem respiratory networks in a decerebrated perfused brainstem preparation of rat with intact olfactory bulbs. Intranasal application of non-trigeminal odors (rose) did not evoke respir...
journal_title:Respiratory physiology & neurobiology
pub_type: 杂志文章
doi:10.1016/j.resp.2016.07.008
更新日期:2016-11-01 00:00:00
abstract::Aquaporins (AQPs) are small, integral membrane proteins that facilitate water transport across cell membranes in response to osmotic gradients. Water transport across epithelia and endothelia in the peripheral lung and airways occurs during airway hydration, alveolar fluid transport and submucosal gland secretion. Sev...
journal_title:Respiratory physiology & neurobiology
pub_type: 杂志文章,评审
doi:10.1016/j.resp.2007.02.012
更新日期:2007-12-15 00:00:00
abstract::Resting lung diffusing capacity (DLCO) decreases during the early and late-follicular phases of the menstrual cycle presumably due to capillary blood volume (VC) changes; however, it is not known if these differences exist during exercise. We hypothesized that DLCO would increase during the mid-luteal phase of the men...
journal_title:Respiratory physiology & neurobiology
pub_type: 杂志文章
doi:10.1016/j.resp.2014.10.014
更新日期:2015-01-01 00:00:00
abstract::Breathing disturbances are a major challenge in Rett Syndrome (RTT). These disturbances are more pronounced during wakefulness; but irregular breathing occurs also during sleep. During the day patients can exhibit alternating bouts of hypoventilation and irregular hyperventilation. But there is significant individual ...
journal_title:Respiratory physiology & neurobiology
pub_type: 杂志文章,评审
doi:10.1016/j.resp.2013.06.022
更新日期:2013-11-01 00:00:00
abstract::A negative influence of central chemosensitivity on peripheral chemoreflex response has been demonstrated recently in a decerebrate-vagotomized rat preparation in situ with separate carotid body and brainstem perfusions. Here, we report similar negative influences of hypercapnia on the hypoxic respiratory response in ...
journal_title:Respiratory physiology & neurobiology
pub_type: 杂志文章
doi:10.1016/j.resp.2012.01.008
更新日期:2012-04-15 00:00:00
abstract::Bronchospasm may be part of the response to systemic anaphylaxis in humans. The anaphylactic shock has been characterized in allergic rats, but little data are available on the concurrent changes in airway-lung mechanics. The aim was to describe the respiratory resistance (Rrs) and reactance (Xrs) response to ovalbumi...
journal_title:Respiratory physiology & neurobiology
pub_type: 杂志文章
doi:10.1016/j.resp.2013.07.003
更新日期:2013-10-01 00:00:00
abstract::Evidence supports the importance of ovarian hormones as potential tools against sleep apneas in women. On one hand, progesterone is largely acknowledged as being a respiratory stimulant that reduces the frequency of apneas, but the underlying mechanisms remain poorly understood. Recent studies in mice showed that the ...
journal_title:Respiratory physiology & neurobiology
pub_type: 杂志文章,评审
doi:10.1016/j.resp.2017.01.013
更新日期:2017-05-01 00:00:00
abstract::Normal development of the lung requires coordinated activation of cascades of signaling pathways initiated by growth factors signaling through their receptors. TrkB and its ligands, brain-derived neurotrophic factor (BDNF) and neurotrophin-4, belong to the neurotrophin family of growth factors, which are expressed in ...
journal_title:Respiratory physiology & neurobiology
pub_type: 杂志文章
doi:10.1016/j.resp.2009.06.001
更新日期:2009-07-31 00:00:00
abstract::The aim of the study was to determine the feasibility of using a breath-holding test in assessing the sensitivity of the peripheral chemoreflex compared with the single-breath carbon dioxide test. The study involved 48 healthy volunteers between the ages of 18-29 years. The breath-holding test was performed followed b...
journal_title:Respiratory physiology & neurobiology
pub_type: 杂志文章
doi:10.1016/j.resp.2016.10.005
更新日期:2017-01-01 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::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:INTRODUCTION:Nasal highflow (NHF) has a growing evidence in treatment of hypoxemic respiratory failure. There are preliminary data available about use in acute and chronic type-II-respiratory failure. Unfortunately underlying mechanisms of NHF are not well understood. Increase in airway pressure seems too small to expl...
journal_title:Respiratory physiology & neurobiology
pub_type: 杂志文章
doi:10.1016/j.resp.2017.03.012
更新日期:2017-08-01 00:00:00
abstract::The mass spectrometer (MS) traditionally has been the instrument of choice for measuring cardiac output (Q (T)) non-invasively using the foreign gas uptake method. However, the size and cost of the MS has hampered widespread adoption of this technique outside of the laboratory. Here, we present results, from six norma...
journal_title:Respiratory physiology & neurobiology
pub_type: 临床试验,杂志文章
doi:10.1016/j.resp.2005.09.010
更新日期:2006-09-28 00:00:00
abstract::The fetal respiratory response to acute hypoxia is characterized by depression, often to apnea. This study examined the effect of hypoxia on the electromyogram (EMG) of the thyroarytenoid (TA) muscle. Under anesthesia catheters were placed in the fetal sheep carotid artery, fourth cerebral ventricle, trachea and amnio...
journal_title:Respiratory physiology & neurobiology
pub_type: 杂志文章
doi:10.1016/j.resp.2010.03.003
更新日期:2010-04-30 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::Dyspnoea, the perception of an unpleasant and/or uncomfortable sensation of breathlessness, offers several physiological, anatomical and teleological analogies with pain. Pain perception has been shown to exist in the newborn, suggesting that dyspnoea may also occur from birth onwards. The perception of breathlessness...
journal_title:Respiratory physiology & neurobiology
pub_type: 社论,评审
doi:10.1016/j.resp.2008.12.001
更新日期:2009-05-30 00:00:00
abstract::This study tested the hypothesis that apnoea index would be greater during daytime sleep than nighttime sleep in the rat. Electroencephalogram and electromyogram were monitored via biotelemetry implant and respiration was measured using whole body plethysmography in six male rats in two separate 34h recording sessions...
journal_title:Respiratory physiology & neurobiology
pub_type: 杂志文章
doi:10.1016/j.resp.2006.02.007
更新日期:2006-12-01 00:00:00
abstract::Our aim was to observe the induction of panic attacks (PA) symptoms by a breath-hold test in panic disorder (PD) patients as the Diagnostic and Statistical Manual for Mental Disorders 4th edition (DSM-IV) and their healthy first-degree relatives. We randomly selected 26 PD patients, 28 healthy first-degree relatives o...
journal_title:Respiratory physiology & neurobiology
pub_type: 杂志文章
doi:10.1016/s1569-9048(02)00149-0
更新日期:2002-10-23 00:00:00
abstract::The function of a motor neuron and the muscle fibers it innervates (i.e., a motor unit) determines neuromotor output. Unlike other skeletal muscles, respiratory muscles (e.g., the diaphragm, DIAm) must function from birth onwards in sustaining ventilation. DIAm motor units are capable of both ventilatory and non-venti...
journal_title:Respiratory physiology & neurobiology
pub_type: 杂志文章,评审
doi:10.1016/j.resp.2008.07.018
更新日期:2008-12-10 00:00:00