Pulmonary CirculationPub Date : 2024-05-12eCollection Date: 2024-04-01DOI: 10.1002/pul2.12378
Gregg H Rawlings, Chris Gaskell, Nigel Beail, Andrew Thompson, Iain Armstrong
{"title":"Exploratory and confirmatory factor analysis of emPHasis-10: The health-related quality-of-life measure in pulmonary hypertension.","authors":"Gregg H Rawlings, Chris Gaskell, Nigel Beail, Andrew Thompson, Iain Armstrong","doi":"10.1002/pul2.12378","DOIUrl":"10.1002/pul2.12378","url":null,"abstract":"<p><p>The emPHasis-10 is a health-related quality of life (HRQoL) unidimensional measure developed specifically for adults with pulmonary hypertension. The tool has excellent psychometric properties and is well used in research and clinical settings. Its factor structure has not been examined, which may help to identity a complimentary approach to using the measure to examine patient functioning. We performed an exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) on a data set collected from 263 adults with PH recruited from a community setting. The EFA suggested the emPHasis-10 consists of three underlying latent variables, which based on the loading of items, were termed \"fatigue\" (Items 3, 4, and 5), \"independence\" (Items 7, 8, 9, and 10), and \"breathlessness\" (Items 1, 2, and 6). All factors were found to have good internal consistency. \"Independence\" accounted for most of the variance (29%), followed by \"breathlessness\" (22%) and \"fatigue\" (19%). The CFA looked to confirm the fit of a three-factor model. A higher-order model was found to be the best fit consisting of HRQoL as a superordinate factor, for which the association between this factor and the 10 items was mediated through the three latent factors. Further analyses were performed testing the validity of the latent variables revealing all were significantly correlated with self-reported measures of depression, anxiety, health-anxiety, and dyspnea. Our analyses support the emPHasis-10 as a measure of HRQoL, while also proposing the clinical utility of examining the three emergent factors, which could be used to glean additional insight into the respondent's functioning and inform care.</p>","PeriodicalId":20927,"journal":{"name":"Pulmonary Circulation","volume":"14 2","pages":"e12378"},"PeriodicalIF":2.6,"publicationDate":"2024-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11088805/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140912593","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}
Pulmonary CirculationPub Date : 2024-05-12eCollection Date: 2024-04-01DOI: 10.1002/pul2.12375
Matthew D Rockstrom, Ying Jin, Ryan A Peterson, Peter Hountras, David Badesch, Sue Gu, Bryan Park, John Messenger, Lindsay M Forbes, William K Cornwell, Todd M Bull
{"title":"The effects of oxygenation on acute vasodilator challenge in pulmonary arterial hypertension.","authors":"Matthew D Rockstrom, Ying Jin, Ryan A Peterson, Peter Hountras, David Badesch, Sue Gu, Bryan Park, John Messenger, Lindsay M Forbes, William K Cornwell, Todd M Bull","doi":"10.1002/pul2.12375","DOIUrl":"10.1002/pul2.12375","url":null,"abstract":"<p><p>Identification of long-term calcium channel blocker (CCB) responders with acute vasodilator challenge is critical in the evaluation of patients with pulmonary arterial hypertension. Currently there is no standardized approach for use of supplemental oxygen during acute vasodilator challenge. In this retrospective analysis of patients identified as acute vasoresponders, treated with CCBs, all patients had hemodynamic measurements in three steps: (1) at baseline; (2) with 100% fractional inspired oxygen; and (3) with 100% fractional inspired oxygen plus inhaled nitric oxide (iNO). Those meeting the definition of acute vasoresponsiveness only after first normalizing for the effects of oxygen in step 2 were labeled \"iNO Responders.\" Those who met the definition of acute vasoresponsiveness from a combination of the effects of 100% FiO<sub>2</sub> and iNO were labeled \"oxygen responders.\" Survival, hospitalization for decompensated right heart failure, duration of CCB monotherapy, and functional data were collected. iNO responders, when compared to oxygen responders, had superior survival (100% vs. 50.1% 5-year survival, respectively), fewer hospitalizations for acute decompensated right heart failure (0% vs. 30.4% at 1 year, respectively), longer duration of CCB monotherapy (80% vs. 52% at 1 year, respectively), and superior 6-min walk distance. Current guidelines for acute vasodilator testing do not standardize oxygen coadministration with iNO. This study demonstrates that adjusting for the effects of supplemental oxygen before assessing for acute vasoresponsiveness identifies a cohort with superior functional status, tolerance of CCB monotherapy, and survival while on long-term CCB therapy.</p>","PeriodicalId":20927,"journal":{"name":"Pulmonary Circulation","volume":"14 2","pages":"e12375"},"PeriodicalIF":2.6,"publicationDate":"2024-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11088807/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140912617","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}
Pulmonary CirculationPub Date : 2024-05-09eCollection Date: 2024-04-01DOI: 10.1002/pul2.12374
Adam S Vohra, Danielle A Olonoff, Ada Ip, Ajay J Kirtane, Zachary Steinberg, Evelyn Horn, Udhay Krishnan, Mark Reisman, Geoffrey Bergman, Shing-Chiu Wong, Dmitriy N Feldman, Luke K Kim, Harsimran S Singh
{"title":"Nationwide trends of balloon pulmonary angioplasty and pulmonary thromboendarterectomy for chronic thromboembolic pulmonary hypertension (2012-2019).","authors":"Adam S Vohra, Danielle A Olonoff, Ada Ip, Ajay J Kirtane, Zachary Steinberg, Evelyn Horn, Udhay Krishnan, Mark Reisman, Geoffrey Bergman, Shing-Chiu Wong, Dmitriy N Feldman, Luke K Kim, Harsimran S Singh","doi":"10.1002/pul2.12374","DOIUrl":"10.1002/pul2.12374","url":null,"abstract":"<p><p>Chronic thromboembolic pulmonary hypertension (CTEPH) is a sequela of a pulmonary embolus that occurs in approximately 1%-3% of patients. Pulmonary thromboendoarterectomy (PTE) can be a curative procedure, but balloon pulmonary angioplasty (BPA) has emerged as an option for poor surgical candidates. We used the National Inpatient Sample to query patients who underwent PTE or BPA between 2012 and 2019 with CTEPH. The primary outcome was a composite of in-hospital mortality, myocardial infarction, stroke, tracheostomy, and prolonged mechanical ventilation. Outcomes were compared between low- and high-volume centers, defined as 5 and 10 procedures per year for BPA and PTE, respectively. During our study period, 870 BPA and 2395 PTE were performed. There was a 328% relative increase in the number of PTE performed during the study period. Adverse events for BPA were rare. There was an increase in the primary composite outcome for low-volume centers compared to high-volume centers for PTE (24.4% vs. 12.1%, <i>p</i> = 0.003). Patients with hospitalizations for PTE in low-volume centers were more likely to have prolonged mechanical ventilation (20.0%% vs. 7.2%, <i>p</i> < 0.001) and tracheostomy (7.8% vs. 2.6%, <i>p</i> = 0.017). In summary, PTE rates have been rising over the past 10 years, while BPA rates have remained stable. While adverse outcomes are rare for BPA, patients with hospitalizations at low-volume centers for PTE were more likely to have adverse outcomes. For patients undergoing treatment of CTEPH with BPA or PTE, referral to high-volume centers with multidisciplinary teams should be encouraged for optimal outcomes.</p>","PeriodicalId":20927,"journal":{"name":"Pulmonary Circulation","volume":"14 2","pages":"e12374"},"PeriodicalIF":2.6,"publicationDate":"2024-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11082429/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140912595","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}
Pulmonary CirculationPub Date : 2024-05-05eCollection Date: 2024-04-01DOI: 10.1002/pul2.12373
Kelly Merrill, Anne Davis, Emma Jackson, Meredith Riker, Christa Kirk, Delphine Yung
{"title":"Direct prostacyclin transition in pediatric patients with pulmonary hypertension.","authors":"Kelly Merrill, Anne Davis, Emma Jackson, Meredith Riker, Christa Kirk, Delphine Yung","doi":"10.1002/pul2.12373","DOIUrl":"https://doi.org/10.1002/pul2.12373","url":null,"abstract":"<p><p>Pediatric patients with pulmonary arterial hypertension (PAH) are commonly treated with the prostacyclin analog treprostinil in IV, SQ, inhaled or oral form, or the prostacyclin receptor agonist selexipag. Patients who transition between these medications often follow recommendations for gradual up- and down-titrations that take place over several days in the hospital or several weeks as an outpatient. However, hospital resources are limited, and long transitions are inconvenient for patients and families. We report a case series of eight pediatric patients with PAH transitioned directly between prostacyclins with no overlapping doses. Direct medication transitions occurred in the cardiac intensive care unit (CICU), at home and in cardiology clinic. Equivalent doses for selexipag were estimated using information extrapolated from experience, published materials and selexipag study guidelines. All patients completed direct transition as planned and remained on transition dose for at least 1 week. In most cases selexipag was up-titrated at home after establishing initial transition dose. In select patients, direct prostacyclin transition in pediatric patients with PAH is safe, effective, convenient for families and reduces the use of hospital resources.</p>","PeriodicalId":20927,"journal":{"name":"Pulmonary Circulation","volume":"14 2","pages":"e12373"},"PeriodicalIF":2.6,"publicationDate":"2024-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11070152/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140857929","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}
{"title":"Early bedside detection of pulmonary perfusion defect by electrical impedance tomography after pulmonary endarterectomy.","authors":"Qianlin Wang, Huaiwu He, Siyi Yuan, Jing Jiang, Yi Chi, Yun Long, Zhanqi Zhao","doi":"10.1002/pul2.12372","DOIUrl":"https://doi.org/10.1002/pul2.12372","url":null,"abstract":"<p><p>Pulmonary endarterectomy (PEA) is the standard treatment for chronic thromboembolic pulmonary hypertension. However, it poses risks of perioperative vascular complications, which can lead to serious clinical outcomes. This study introduces a novel noninvasive and radiation-free clinical imaging tool, electrical impedance tomography (EIT), for real-time bedside assessment of lung perfusion after PEA. It identifies ventilation-perfusion mismatches arising from postoperative complications, particularly valuable for patients with hemodynamic instability, thus eliminating risks tied to CT room transfers. The article reports a case where EIT was used to identify an in-situ thrombosis post-PEA, marking the first such application. The emphasis is on early detection using EIT, which offers a promising approach for therapeutic interventions and improved postoperative evaluations.</p>","PeriodicalId":20927,"journal":{"name":"Pulmonary Circulation","volume":"14 2","pages":"e12372"},"PeriodicalIF":2.6,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11063724/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140864154","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}
{"title":"Balloon pulmonary angioplasty under awake veno-arterial extracorporeal membrane oxygenation in a patient with class III obesity with chronic thromboembolic pulmonary hypertension complicated with multiple serious comorbidities.","authors":"Tsukasa Sato, Shigefumi Fukui, Takao Nakano, Kaoru Hasegawa, Hisashi Kikuta, Takeyoshi Kameyama, Yuko Shirota, Tomoyuki Endo, Shunsuke Kawamoto, Koji Kumagai, Hideo Izawa, Tatsuya Komaru","doi":"10.1002/pul2.12377","DOIUrl":"https://doi.org/10.1002/pul2.12377","url":null,"abstract":"<p><p>Chronic thromboembolic pulmonary hypertension (CTEPH) is a chronic disease that can rapidly deteriorate into circulatory collapse when complicated by comorbidities. We herein describe a case involving a 43-year-old woman with class III obesity (body mass index of 63 kg/m<sup>2</sup>) and severe CTEPH associated with total occlusion of the left main pulmonary artery who subsequently developed circulatory collapse along with multiple comorbidities, including acute kidney injury, pulmonary tuberculosis, and catastrophic antiphospholipid syndrome. The patient was successfully treated with two sessions of rescue balloon pulmonary angioplasty with veno-arterial extracorporeal membrane oxygenation (V-A ECMO) support under local anesthesia without sedation, at cannulation and during the V-A ECMO run, to avoid invasive mechanical ventilation. This case suggests the potential usefulness of rescue balloon pulmonary angioplasty under awake V-A ECMO support for rapidly deteriorating, inoperable CTEPH in a patient with class III obesity complicated with multiple comorbidities.</p>","PeriodicalId":20927,"journal":{"name":"Pulmonary Circulation","volume":"14 2","pages":"e12377"},"PeriodicalIF":2.6,"publicationDate":"2024-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11056103/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140850364","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}
Harrison W. Farber, Hayley D. Germack, Nicole S. Croteau, Jason C. Simeone, Fei Tang, Carly J. Paoli, Gurinderpal Doad, Sumeet Panjabi, Teresa De Marco
{"title":"Factors associated with discontinuation of treatment for pulmonary arterial hypertension in the United States","authors":"Harrison W. Farber, Hayley D. Germack, Nicole S. Croteau, Jason C. Simeone, Fei Tang, Carly J. Paoli, Gurinderpal Doad, Sumeet Panjabi, Teresa De Marco","doi":"10.1002/pul2.12326","DOIUrl":"https://doi.org/10.1002/pul2.12326","url":null,"abstract":"Information on factors leading to pulmonary arterial hypertension (PAH) treatment discontinuation is limited. This study analyzed 12,902 new PAH medication users to identify predictors of treatment discontinuation. Treatment by accredited pulmonary hypertension centers and combination therapy with PAH agents from different classes were less likely to result in discontinuation.","PeriodicalId":20927,"journal":{"name":"Pulmonary Circulation","volume":"33 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140560267","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}
Emily Morell, Elizabeth Colglazier, Jasmine Becerra, Leah Stevens, Martina A. Steurer, Anshuman Sharma, Hung Nguyen, Irfan S. Kathiriya, Stephen Weston, David Teitel, Roberta Keller, Elena K. Amin, Hythem Nawaytou, Jeffrey R. Fineman
{"title":"A single institution anesthetic experience with catheterization of pediatric pulmonary hypertension patients","authors":"Emily Morell, Elizabeth Colglazier, Jasmine Becerra, Leah Stevens, Martina A. Steurer, Anshuman Sharma, Hung Nguyen, Irfan S. Kathiriya, Stephen Weston, David Teitel, Roberta Keller, Elena K. Amin, Hythem Nawaytou, Jeffrey R. Fineman","doi":"10.1002/pul2.12360","DOIUrl":"https://doi.org/10.1002/pul2.12360","url":null,"abstract":"Cardiac catheterization remains the gold standard for the diagnosis and management of pediatric pulmonary hypertension (PH). There is lack of consensus regarding optimal anesthetic and airway regimen. This retrospective study describes the anesthetic/airway experience of our single center cohort of pediatric PH patients undergoing catheterization, in which obtaining hemodynamic data during spontaneous breathing is preferential. A total of 448 catheterizations were performed in 232 patients. Of the 379 cases that began with a natural airway, 274 (72%) completed the procedure without an invasive airway, 90 (24%) received a planned invasive airway, and 15 (4%) required an unplanned invasive airway. Median age was 3.4 years (interquartile range [IQR] 0.7–9.7); the majority were either Nice Classification Group 1 (48%) or Group 3 (42%). Vasoactive medications and cardiopulmonary resuscitation were required in 14 (3.7%) and eight (2.1%) cases, respectively; there was one death. Characteristics associated with use of an invasive airway included age <1 year, Group 3, congenital heart disease, trisomy 21, prematurity, bronchopulmonary dysplasia, WHO functional class III/IV, no PH therapy at time of case, preoperative respiratory support, and having had an intervention (<i>p</i> < 0.05). A composite predictor of age <1 year, Group 3, prematurity, and any preoperative respiratory support was significantly associated with unplanned airway escalation (26.7% vs. 6.9%, odds ratio: 4.9, confidence interval: 1.4–17.0). This approach appears safe, with serious adverse event rates similar to previous reports despite the predominant use of natural airways. However, research is needed to further investigate the optimal anesthetic regimen and respiratory support for pediatric PH patients undergoing cardiac catheterization.","PeriodicalId":20927,"journal":{"name":"Pulmonary Circulation","volume":"30 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140560261","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}
Celik Sumer, Gulfer Okumus, Emine Goknur Isik, Cuneyt Turkmen, Ahmet Kaya Bilge, Murat Inanc
{"title":"(18)F-fluorodeoxyglucose uptake by positron emission tomography in patients with IPAH and CTEPH","authors":"Celik Sumer, Gulfer Okumus, Emine Goknur Isik, Cuneyt Turkmen, Ahmet Kaya Bilge, Murat Inanc","doi":"10.1002/pul2.12363","DOIUrl":"https://doi.org/10.1002/pul2.12363","url":null,"abstract":"Pulmonary arterial hypertension (PAH) is driven by pathologies associated with increased metabolism such as pulmonary revascularization, vasoconstriction and smooth muscle cell proliferation in pulmonary artery wall. 18-fluorodeoxyglucose positron emission tomography (18FDG-PET) is an imaging technique sensitive to glucose metabolism and might be considered as a non-invasive method for diagnosis due to significant role of inflammation in idiopathic pulmonary artery hypertension (IPAH) and chronic thromboembolic pulmonary hypertension (CTEPH). The present study aimed to investigate the role of PET/CT imaging of patients with IPAH and CTEPH as an alternative diagnosis method. Demographic characteristics, FDG uptake in lungs, pulmonary artery and right ventricle (RV) of 17 patients (10 IPAH, 7 CTEPH), and 30 controls were evaluated. PET scanning, 6-min walk test, pro-BNP level, right heart catheterization of patients were performed both at the onsert and after 6-month PAH specific treatment. IPAH and CTEPH patients had significantly higher left lung FDG (<i>p</i> = 0.006), right lung FDG (<i>p</i> = 0.004), right atrial (RA) FDG (<i>p</i> < 0.001) and RV FDG (<i>p</i> < 0.001) uptakes than controls. Positive correlation was detected between the RV FDG uptake and the mean pulmonary artery pressure (mPAP) (<i>r</i> = 0.7, <i>p</i> = 0.012) and between the RA FDG uptake and the right atrial pressure (RAP) (<i>r</i> = 0.5, <i>p</i> = 0.02). Increased RV FDG and RA FDG uptakes predicts the presence of pulmonary hypertension and correlates with mPAP and RAP, respectively, which are important indicators in the prognosis of PAH. Further studies are required whether FDG PET imaging can be used to diagnose or predict the prognosis of pulmonary hypertension.","PeriodicalId":20927,"journal":{"name":"Pulmonary Circulation","volume":"25 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140560651","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}
{"title":"NF-κB affected the serum levels of TNF-α and IL-1β via activation of the MAPK/NF-κB signaling pathway in rat model of acute pulmonary microthromboembolism","authors":"Yanfen Zhong, Binbin Liang, Xiaofeng Zhang, Jingtao Li, Decai Zeng, Tongtong Huang, Ji Wu","doi":"10.1002/pul2.12357","DOIUrl":"https://doi.org/10.1002/pul2.12357","url":null,"abstract":"Pulmonary thromboembolism caused by thrombi blocking major pulmonary artery and its branches, is a frequently encountered phenomenon and an important cause of high morbidity and mortality in lung diseases and may develop into persistent pulmonary hypertension (PH). Nuclear factor-κB (NF-κB) signaling pathway had been reported participated in the formation and development of PH by promoting inflammatory response. The aim of this study was to investigate the effects of NF-κB activation on the serum levels of tumor necrosis factor α (TNF-α) and interleukin-1β (IL-1β) in acute pulmonary microthromboembolism (APMTE) rats. Rats were randomized into five groups. APMTE group received jugular vein injection of autologous thrombus, while control group rats received normal saline injection. Pulmonary hemodynamic parameters were measured through ECHO-guided transthoracic puncture. Pulmonary vascular morphological changes were analyzed by HE. The expression changes of NF-κB and serum TNF-α、IL-1β levels were detected by enzyme-linked immunosorbent assay. Protein expression of the MAPK/NF-κB signaling pathway including p-IκBα, p-p38 MAPK, p-NF-κB p65, IκBα, p38 MAPK, and NF-κB p65 was determined using western blot analysis. Compared with control group, the expression of NF-κB in lung tissue and the levels of serum TNF-α and IL-1β rats were higher, a significant reduction in IκBα and elevation in the phosphorylation of IκBα, p38 MAPK, and NF-κB p65 were found in APMTE group rats. And UK administration reversed the APMTE-induced increase in TNF-α, IL-1β, p-IκBα, p-MAPK, and p-NF-κB protein. Furthermore, the levels of NF-κB, TNF-α, and IL-1β were positively correlated with mean pulmonary artery. And the levels of TNF-α and IL-1β were positively correlated with NF-κB. These findings suggest that the activation of MAPK/NF-κB pathway as a critical driver of increasing TNF-α and IL-1β level in APMTE rats and UK exerted protective effects against APMTE-induced PH may be related to the downregulation of the MAPK/NF-κB signaling pathway.","PeriodicalId":20927,"journal":{"name":"Pulmonary Circulation","volume":"48 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140560653","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}