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Effect of the NLRP3 inflammasome on increased hypoxic ventilation response after CIH exposure in mice NLRP3 炎性体对小鼠暴露于 CIH 后缺氧通气反应增加的影响
IF 2.3 4区 医学
Respiratory Physiology & Neurobiology Pub Date : 2023-12-19 DOI: 10.1016/j.resp.2023.104204
Xinyun Jia , Jianxia Sun , Qingya Zhuo , Baosheng Zhao , Yuzhen Liu
{"title":"Effect of the NLRP3 inflammasome on increased hypoxic ventilation response after CIH exposure in mice","authors":"Xinyun Jia ,&nbsp;Jianxia Sun ,&nbsp;Qingya Zhuo ,&nbsp;Baosheng Zhao ,&nbsp;Yuzhen Liu","doi":"10.1016/j.resp.2023.104204","DOIUrl":"10.1016/j.resp.2023.104204","url":null,"abstract":"<div><h3>Background</h3><p><span>Chronic intermittent hypoxia<span> (CIH) increases the hypoxic ventilation response (HVR). The downstream cytokine IL-1β of the NLRP3 inflammasome regulates respiration by acting on the </span></span>carotid body<span> (CB) and neurons in the respiratory center, but the effect of the NLRP3 inflammasome on HVR induced by CIH remains unclear.</span></p></div><div><h3>Objective</h3><p>To investigate the effect of NLRP3 on the increased HVR and spontaneous apnea events and duration induced by CIH, the expression and localization of NLRP3 in the respiratory regulatory center of the rostral ventrolateral medulla (RVLM), and the effect of CIH on the activation of the NLRP3 inflammasome in the RVLM.</p></div><div><h3>Methods</h3><p><span>Eighteen male, 7-week-old C57BL/6 N mice and eighteen male, 7-week-old C57BL/6 N NLRP3 knockout mice were randomly divided into CON-WT, CON-NLRP3</span><sup>-/-</sup>, CIH-WT and CIH-NLRP3<sup>-/-</sup><span><span> groups. Respiratory changes in mice were continuously detected using whole-body plethysmography. The expression and localization of the NLRP3 protein and the formation of apoptosis-associated speck-like protein containing CARD (ASC) specks were detected using immunofluorescence </span>staining.</span></p></div><div><h3>Results</h3><p><span>NLRP3 knockout reduced the increased HVR and the incidence and duration of spontaneous apnea events associated with CIH. The increase in HVR caused by CIH partially recovered after reoxygenation. After CIH, NLRP3 inflammasome activation in the RVLM, which is related to </span>respiratory regulation after hypoxia, increased, which was consistent with the trend of the ventilation response.</p></div><div><h3>Conclusion</h3><p>The NLRP3 inflammasome may be involved in the increase in the HVR and the incidence and duration of spontaneous apnea induced by CIH. NLRP3 inhibitors may help reduce the increase in the HVR after CIH, which is important for ensuring sleep quality at night in patients<span> with obstructive sleep apnea.</span></p></div>","PeriodicalId":20961,"journal":{"name":"Respiratory Physiology & Neurobiology","volume":"321 ","pages":"Article 104204"},"PeriodicalIF":2.3,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138745075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Paralemmin-3 augments lipopolysaccharide-induced acute lung injury with M1 macrophage polarization via the notch signaling pathway Paralemmin-3 通过缺口信号通路增强脂多糖诱导的急性肺损伤与 M1 巨噬细胞极化作用
IF 2.3 4区 医学
Respiratory Physiology & Neurobiology Pub Date : 2023-12-14 DOI: 10.1016/j.resp.2023.104203
Xuxin Chen , Fan Wang , Jian Tang , Jiguang Meng, Zhihai Han
{"title":"Paralemmin-3 augments lipopolysaccharide-induced acute lung injury with M1 macrophage polarization via the notch signaling pathway","authors":"Xuxin Chen ,&nbsp;Fan Wang ,&nbsp;Jian Tang ,&nbsp;Jiguang Meng,&nbsp;Zhihai Han","doi":"10.1016/j.resp.2023.104203","DOIUrl":"https://doi.org/10.1016/j.resp.2023.104203","url":null,"abstract":"<div><h3>Background</h3><p>Acute lung injury (ALI) involves severe lung damage and respiratory failure, which are accompanied by alveolar macrophage (AM) activation. The aim of this article is to verify the influence of paralemmin-3 (PALM3) on alveolar macrophage (AM) polarization in ALI and the underlying mechanism of action.</p></div><div><h3>Methods</h3><p>An ALI rat model was established by successive lipopolysaccharide (LPS) inhalations. The influence of PALM3 on the survival rate, severity of lung injury, and macrophage polarization was analyzed. Furthermore, we explored the underlying mechanism of PALM3 in regulating macrophage polarization.</p></div><div><h3>Results</h3><p>PALM3 overexpression increased mortality of ALI rats, augmented lung pathological damage, and promoted AM polarization toward M1 cells. Conversely, PALM3 knockdown had the opposite effects. Mechanistically, PALM3 might promote M1 polarization by acting as an adaptor to facilitate transduction of Notch signaling.</p></div><div><h3>Conclusion</h3><p>PALM3 aggravates lung injury and induces macrophage polarization toward M1 cells by activating the Notch signaling pathway in LPS-induced ALI, which may shed light on ALI/ARDS treatments.</p></div>","PeriodicalId":20961,"journal":{"name":"Respiratory Physiology & Neurobiology","volume":"320 ","pages":"Article 104203"},"PeriodicalIF":2.3,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S156990482300191X/pdfft?md5=116d5dd81d3a59b0c50605f74dbb0cea&pid=1-s2.0-S156990482300191X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138769764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The pre-Bötzinger complex is necessary for the expression of inspiratory and post-inspiratory motor discharge of the vagus pre-Bötzinger复合体对于迷走神经的吸气和吸气后运动放电的表达是必需的。
IF 2.3 4区 医学
Respiratory Physiology & Neurobiology Pub Date : 2023-12-02 DOI: 10.1016/j.resp.2023.104202
Rishi R. Dhingra , Werner I. Furuya , Yi Kee Yoong , Mathias Dutschmann
{"title":"The pre-Bötzinger complex is necessary for the expression of inspiratory and post-inspiratory motor discharge of the vagus","authors":"Rishi R. Dhingra ,&nbsp;Werner I. Furuya ,&nbsp;Yi Kee Yoong ,&nbsp;Mathias Dutschmann","doi":"10.1016/j.resp.2023.104202","DOIUrl":"10.1016/j.resp.2023.104202","url":null,"abstract":"<div><p><span>The mammalian three-phase respiratory motor pattern of inspiration, post-inspiration and expiration is expressed in spinal and cranial motor nerve discharge and is generated by a distributed ponto-medullary respiratory pattern<span> generating network. Respiratory motor pattern generation depends on a rhythmogenic kernel located within the pre-Bötzinger complex (pre-BötC). In the present study, we tested the effect of unilateral and bilateral inactivation of the pre-BötC after local microinjection of the GABA</span></span><sub>A</sub><span><span> receptor agonist isoguvacine<span> (10 mM, 50 nl) on phrenic (PNA), hypoglossal (HNA) and vagal nerve (VNA) respiratory motor activities in an in situ perfused brainstem preparation of rats. Bilateral inactivation of the pre-BötC triggered cessation of phrenic (PNA), hypoglossal (HNA) and vagal (VNA) </span></span>nerve activities<span> for 15–20 min. Ipsilateral isoguvacine injections into the pre-BötC triggered transient (6–8 min) cessation of inspiratory and post-inspiratory VNA (p &lt; 0.001) and suppressed inspiratory HNA by − 70 ± 15% (p &lt; 0.01), while inspiratory PNA burst frequency increased by 46 ± 30% (p &lt; 0.01). Taken together, these observations confirm the role of the pre-BötC as the rhythmogenic kernel of the mammalian respiratory network in situ and highlight a significant role for the pre-BötC in the transmission of vagal inspiratory and post-inspiratory pre-motor drive to the nucleus ambiguus.</span></span></p></div>","PeriodicalId":20961,"journal":{"name":"Respiratory Physiology & Neurobiology","volume":"320 ","pages":"Article 104202"},"PeriodicalIF":2.3,"publicationDate":"2023-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138482911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Interaction between Kölliker-Fuse/A7 and the parafacial respiratory region on the control of respiratory regulation Kölliker-Fuse/A7与面旁呼吸区在呼吸调节中的相互作用。
IF 2.3 4区 医学
Respiratory Physiology & Neurobiology Pub Date : 2023-12-01 DOI: 10.1016/j.resp.2023.104201
Luiz M. Oliveira , Thiago S. Moreira , Ana C. Takakura
{"title":"Interaction between Kölliker-Fuse/A7 and the parafacial respiratory region on the control of respiratory regulation","authors":"Luiz M. Oliveira ,&nbsp;Thiago S. Moreira ,&nbsp;Ana C. Takakura","doi":"10.1016/j.resp.2023.104201","DOIUrl":"10.1016/j.resp.2023.104201","url":null,"abstract":"<div><p><span>Respiration is regulated by various types of neurons located in the pontine-medullary regions. The Kölliker-Fuse (KF)/A7 noradrenergic neurons play a role in modulating the inspiratory cycle by influencing the respiratory output. These neurons are interconnected and may also project to brainstem<span> and spinal cord, potentially involved in regulating the post-inspiratory phase. In the present study, we hypothesize that the parafacial (pF) neurons, in conjunction with adrenergic mechanisms originating from the KF/A7 region, may provide the neurophysiological basis for breathing modulation. We conducted experiments using urethane-anesthetized, vagotomized, and artificially ventilated male Wistar rats. Injection of L-glutamate into the KF/A7 region resulted in inhibition of inspiratory activity, and a prolonged and high-amplitude genioglossal activity (GG</span></span><sub>EMG</sub>). Blockade of the α<sub>1</sub><span> adrenergic receptors (α</span><sub>1</sub><span>-AR) or the ionotropic glutamatergic receptors in the pF region decrease the activity of the GG</span><sub>EMG</sub> without affecting inspiratory cessation. In contrast, blockade of α<sub>2</sub>-AR in the pF region extended the duration of GG activity. Notably, the inspiratory and GG<sub>EMG</sub> activities induced by KF/A7 stimulation were completely blocked by bilateral blockade of glutamatergic receptors in the Bötzinger complex (BötC). While our study found a limited role for α<sub>1</sub> and α<sub>2</sub><span> adrenergic receptors at the pF level in modulating the breathing response to KF/A7 stimulation, it became evident that BötC neurons are responsible for the respiratory effects induced by KF/A7 stimulation.</span></p></div>","PeriodicalId":20961,"journal":{"name":"Respiratory Physiology & Neurobiology","volume":"320 ","pages":"Article 104201"},"PeriodicalIF":2.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138478434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Chronic Intermittent Hypoxia Attenuates Noradrenergic Innervation of Hypoglossal Motor Nucleus 慢性间歇性缺氧会削弱舌下运动核的去甲肾上腺素能神经支配
IF 2.3 4区 医学
Respiratory Physiology & Neurobiology Pub Date : 2023-12-01 DOI: 10.1016/j.resp.2023.104206
Rachael Herlihy, Leonardo Frasson Dos Reis, A. Gvritishvili, Maya Kvizhinadze, Elizabeth Dybas, Atul Malhotra, V. Fenik, I. Rukhadze
{"title":"Chronic Intermittent Hypoxia Attenuates Noradrenergic Innervation of Hypoglossal Motor Nucleus","authors":"Rachael Herlihy, Leonardo Frasson Dos Reis, A. Gvritishvili, Maya Kvizhinadze, Elizabeth Dybas, Atul Malhotra, V. Fenik, I. Rukhadze","doi":"10.1016/j.resp.2023.104206","DOIUrl":"https://doi.org/10.1016/j.resp.2023.104206","url":null,"abstract":"","PeriodicalId":20961,"journal":{"name":"Respiratory Physiology & Neurobiology","volume":"230 ","pages":"104206"},"PeriodicalIF":2.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139016347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reproducibility and responsiveness of airway impedance measures derived from the forced oscillation technique across different operating lung volumes 强迫振荡技术在不同肺容量下气道阻抗测量的再现性和反应性。
IF 2.3 4区 医学
Respiratory Physiology & Neurobiology Pub Date : 2023-11-28 DOI: 10.1016/j.resp.2023.104200
Craig R. Aitken , Girish Pathangey , Mathew Stamos , Chul-Ho Kim , Bruce D. Johnson , Glenn M. Stewart
{"title":"Reproducibility and responsiveness of airway impedance measures derived from the forced oscillation technique across different operating lung volumes","authors":"Craig R. Aitken ,&nbsp;Girish Pathangey ,&nbsp;Mathew Stamos ,&nbsp;Chul-Ho Kim ,&nbsp;Bruce D. Johnson ,&nbsp;Glenn M. Stewart","doi":"10.1016/j.resp.2023.104200","DOIUrl":"10.1016/j.resp.2023.104200","url":null,"abstract":"<div><h3>Background</h3><p>The forced oscillation technique (FOT) enables non-invasive measurement of respiratory system impedance. Limited data exists on how changes in operating lung volume (OLV) impact FOT-derived measures of airway resistance (Rrs) and reactance (Xrs).</p></div><div><h3>Objectives</h3><p>This study examined the reproducibility and responsiveness of FOT-derived measures of Rrs and Xrs during simulated changes in OLV.</p></div><div><h3>Methods</h3><p>Participants simulated breathing at six OLVs: total lung capacity (TLC), ∼50% of inspiratory reserve volume (IRV<sub>50</sub>), ∼two-times tidal volume (VT<sub>2</sub>), tidal volume (VT), ∼50% of expiratory reserve volume (ERV<sub>50</sub>), and residual volume (RV), on a commercially available FOT device. Each simulated OLV manuever was performed in triplicate and in random order. Total Rrs and Xrs were recorded at 5, 11, and 19 Hz.</p></div><div><h3>Results</h3><p>Twelve healthy participants (2 female) completed the study (weight: 76.5 ± 13.6 kg, height: 178.6 ± 9.7 cm, body mass index: 23.9 ± 3.1 kg/m<sup>2</sup>). Reproducibility of Rrs and Xrs at VT, VT<sub>2</sub> and IRV<sub>50</sub> was good to excellent (Range: ICC: 0.89–0.98, 95% confidence interval (CI): 0.70–0.98), while reproducibility at TLC, RV, and ERV<sub>50</sub> was poor to excellent (Range: ICC: 0.60–0.98, 95% CI: 0.36–0.97). Rrs and Xrs were not different between VT and VT<sub>2</sub> at any frequency (<em>P</em> &gt; .05). With lung hyperinflation from VT to TLC, Rrs and Xrs decreased at all three frequencies (e.g., At 5 Hz Rrs: mean difference (MD): − 0.89, 95%CI: − 0.03 to − 1.75, <em>P</em> = .04; Xrs: MD: − 0.56, 95%CI: − 0.25 to − 0.86, <em>P</em> &lt; .01). With lung hypoinflated from VT to RV, Rrs increased, and Xrs decreased for all frequencies (e.g., MD at 5 Hz, Rrs: MD: 2.31, 95%CI: 0.94–3.67, <em>P</em> &lt; .01; Xrs: MD: −2.53, 95%CI: −4.02 to −1.04, <em>P</em> &lt; .01).</p></div><div><h3>Conclusion</h3><p>FOT-derived measures of airway Rrs and Xrs are reproducible across a range of OLV’s, and are responsive to hyper- and hypo-inflation of the lung. To further understand the impact of lung hyper- and hypo-inflation on FOT-derived airway impedance additional study is required in individuals with pathological variations in operating lung volume.</p></div>","PeriodicalId":20961,"journal":{"name":"Respiratory Physiology & Neurobiology","volume":"320 ","pages":"Article 104200"},"PeriodicalIF":2.3,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S156990482300188X/pdfft?md5=7d0891985bf465877d1164d80ae90fc7&pid=1-s2.0-S156990482300188X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138462328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Indirect cardiac output assessment in a swine pediatric acute respiratory distress syndrome model 猪小儿急性呼吸窘迫综合征模型的间接心输出量评估。
IF 2.3 4区 医学
Respiratory Physiology & Neurobiology Pub Date : 2023-11-23 DOI: 10.1016/j.resp.2023.104199
Lorenzo A. Miller , Rudolf K. Braun , Regina J. Golding , Michael Lasarev , Allison C. Rodgers , Sarah El-Meanawy , Timothy A. Hacker , Marlowe W. Eldridge , Awni M. Al-Subu
{"title":"Indirect cardiac output assessment in a swine pediatric acute respiratory distress syndrome model","authors":"Lorenzo A. Miller ,&nbsp;Rudolf K. Braun ,&nbsp;Regina J. Golding ,&nbsp;Michael Lasarev ,&nbsp;Allison C. Rodgers ,&nbsp;Sarah El-Meanawy ,&nbsp;Timothy A. Hacker ,&nbsp;Marlowe W. Eldridge ,&nbsp;Awni M. Al-Subu","doi":"10.1016/j.resp.2023.104199","DOIUrl":"10.1016/j.resp.2023.104199","url":null,"abstract":"<div><h3>Purpose</h3><p>To investigate the correlation between volume of carbon dioxide elimination (V̇CO<sub>2</sub>) and end-tidal carbon dioxide (PETCO<sub>2</sub><span><span>) with cardiac output (CO) in a swine pediatric </span>acute respiratory distress syndrome </span><strong>(</strong>ARDS) model.</p></div><div><h3>Methods</h3><p><span><span>Respiratory and hemodynamic variables were collected from twenty-six mechanically ventilated juvenile pigs under </span>general anesthesia before and after inducing ARDS, using </span>oleic acid infusion.</p></div><div><h3>Results</h3><p>Prior to ARDS induction, mean (SD) CO, V̇CO<sub>2</sub>, PETCO<sub>2</sub><span>, and dead space to tidal volume ratio (V</span><sub>d</sub>/V<sub>t</sub>) were 4.16 (1.10) L/min, 103.69 (18.06) ml/min, 40.72 (3.88) mmHg and 0.25 (0.09) respectively. Partial correlation coefficients between average CO, V̇CO<sub>2</sub>, and PETCO<sub>2</sub> were 0.44 (95% confidence interval: 0.18–0.69) and 0.50 (0.18–0.74), respectively. After ARDS induction, mean CO, V̇CO<sub>2</sub>, PETCO<sub>2</sub>, and V<sub>d</sub>/V<sub>t</sub> were 3.33 (0.97) L/min, 113.71 (22.97) ml/min, 50.17 (9.73) mmHg and 0.40 (0.08). Partial correlations between CO and V̇CO<sub>2</sub> was 0.01 (−0.31 to 0.37) and between CO and PETCO<sub>2</sub> was 0.35 (−0.002 to 0.65).</p></div><div><h3>Conclusion</h3><p>ARDS may limit the utility of volumetric capnography to monitor CO.</p></div>","PeriodicalId":20961,"journal":{"name":"Respiratory Physiology & Neurobiology","volume":"320 ","pages":"Article 104199"},"PeriodicalIF":2.3,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138434929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cardiorespiratory coupling is associated with exercise capacity in athletes: A cross-sectional study 心肺偶联与运动员的运动能力有关:一项横断面研究。
IF 2.3 4区 医学
Respiratory Physiology & Neurobiology Pub Date : 2023-11-11 DOI: 10.1016/j.resp.2023.104198
Raphael Martins de Abreu , Beatrice Cairo , Patricia Rehder-Santos , Claudio Donisete da Silva , Étore De Favari Signini , Juliana Cristina Milan-Mattos , Camila Akemi Sakaguchi , Aparecida Maria Catai , Alberto Porta
{"title":"Cardiorespiratory coupling is associated with exercise capacity in athletes: A cross-sectional study","authors":"Raphael Martins de Abreu ,&nbsp;Beatrice Cairo ,&nbsp;Patricia Rehder-Santos ,&nbsp;Claudio Donisete da Silva ,&nbsp;Étore De Favari Signini ,&nbsp;Juliana Cristina Milan-Mattos ,&nbsp;Camila Akemi Sakaguchi ,&nbsp;Aparecida Maria Catai ,&nbsp;Alberto Porta","doi":"10.1016/j.resp.2023.104198","DOIUrl":"10.1016/j.resp.2023.104198","url":null,"abstract":"<div><h3>Purpose</h3><p>To determine the association between exercise capacity based on peak oxygen uptake (VO<sub>2peak</sub><span>) and resting cardiorespiratory coupling (CRC) levels in athletes and non-athletes’ subjects.</span></p></div><div><h3>Methods</h3><p><span><span>A cross-sectional study was carried out in 42 apparently healthy male subjects, aged between 20 and 40 years old. The participants were allocated into athletes (n = 21) and non-athletes (n = 21) groups. Resting electrocardiogram and respiratory movement (RESP) were simultaneously acquired during 15 min in </span>supine position and quiet breathing. The beat-to-beat heart period (HP) and RESP series were determined from the recorded signals. Traditional analysis of HP based on frequency domain indexes was performed considering the high-frequency (0.15 – 0.45 Hz) components. To compute the CRC, the linear association between HP and RESP series was determined via squared coherence function and directionality of interaction was investigated through the causal extension of this approach. The exercise capacity was assessed through incremental cardiopulmonary exercise testing in order to determine the VO</span><sub>2peak</sub>.</p></div><div><h3>Results</h3><p>Traditional analysis of HP based on high-frequency index was not correlated with exercise capacity in the athletes (r = −0.1, <em>p</em> = 0.5) and non-athletes (r = −0.1, <em>p</em> = 0.3) cohorts. However, resting CRC values was associated with exercise capacity in athletes (r = 0.4, p = 0.03), but not in the non-athletes group (r = −0.2, <em>p</em> = 0.3).</p></div><div><h3>Conclusion</h3><p>These results suggest that improved resting values of CRC is associated with higher exercise capacity (VO<sub>2peak</sub>) in endurance athletes. Moreover, frequency domain of HP was not sensitive to identifying this relationship, probably because effects of training on parasympathetic modulation might be affected by respiratory dynamics, and this influence has a directionality (i.e., from RESP to HP).</p></div>","PeriodicalId":20961,"journal":{"name":"Respiratory Physiology & Neurobiology","volume":"320 ","pages":"Article 104198"},"PeriodicalIF":2.3,"publicationDate":"2023-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92156277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In-vivo optogenetic identification and electrophysiology of glycinergic neurons in pre-Bötzinger complex of mice 小鼠前Bötzinger复合体甘氨酸能神经元的体内光遗传学鉴定和电生理学。
IF 2.3 4区 医学
Respiratory Physiology & Neurobiology Pub Date : 2023-11-07 DOI: 10.1016/j.resp.2023.104188
Behnam Vafadari , Yoshitaka Oku , Charlotte Tacke , Ali Harb , Swen Hülsmann
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引用次数: 0
Corrigendum to “The course of lung inflation alters the central pattern of tracheobronchial cough in cat – The evidence for volume feedback during cough” [Respir. Physiol. Neurobiol. 229 (2016) 43–50] 更正“肺膨胀过程改变猫气管支气管咳嗽的中心模式-咳嗽过程中音量反馈的证据”[Respir.Physiol.Neurobiol.229(2016)43-50]。
IF 2.3 4区 医学
Respiratory Physiology & Neurobiology Pub Date : 2023-11-07 DOI: 10.1016/j.resp.2023.104184
Ivan Poliacek , Michal Simera , Marcel Veternik , Zuzana Kotmanova , Teresa Pitts , Jan Hanacek , Jana Plevkova , Peter Machac , Nadezda Visnovcova , Jakub Misek , Jan Jakus
{"title":"Corrigendum to “The course of lung inflation alters the central pattern of tracheobronchial cough in cat – The evidence for volume feedback during cough” [Respir. Physiol. Neurobiol. 229 (2016) 43–50]","authors":"Ivan Poliacek ,&nbsp;Michal Simera ,&nbsp;Marcel Veternik ,&nbsp;Zuzana Kotmanova ,&nbsp;Teresa Pitts ,&nbsp;Jan Hanacek ,&nbsp;Jana Plevkova ,&nbsp;Peter Machac ,&nbsp;Nadezda Visnovcova ,&nbsp;Jakub Misek ,&nbsp;Jan Jakus","doi":"10.1016/j.resp.2023.104184","DOIUrl":"10.1016/j.resp.2023.104184","url":null,"abstract":"","PeriodicalId":20961,"journal":{"name":"Respiratory Physiology & Neurobiology","volume":"319 ","pages":"Article 104184"},"PeriodicalIF":2.3,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1569904823001726/pdfft?md5=2cafd9bcc9b95c7c36cdb498f0fae26b&pid=1-s2.0-S1569904823001726-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72015245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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