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"Pulmonary hypertension"

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https://www.readbyqxmd.com/read/28810603/intratracheal-administration-of-isosorbide-dinitrate-improves-pulmonary-artery-pressure-and-ventricular-remodeling-in-a-rat-model-of-heart-failure-following-myocardial-infarction
#1
Xuelian Wang, Qingqing Xu, Tianqi Li, Yaocong Rong, Weilin Hong, Yan Huang, Xingui Guo
Pulmonary hypertension due to left heart disease is associated with poor outcomes. This study investigated the beneficial effects of isosorbide dinitrate (ISDN) inhalation on pulmonary pressure and ventricular remodeling in a rat model of heart failure (HF) following myocardial infarction (MI). To assess the effect of ISDN on pulmonary pressure, 20 male Sprague-Dawley (SD) rats were randomized to four groups: Normal saline (NS) 1 ml/kg, ISDN 1 mg/kg, NS 3 ml/kg or ISDN 3 mg/kg following coronary ligation. Assessments included pulmonary and systemic artery pressure alterations, lung weight/body weight and plasma nitric oxide (NO) concentration...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28810235/obesity-as-a-conditioning-factor-for-high-altitude-diseases
#2
Rocío San Martin, Julio Brito, Patricia Siques, Fabiola León-Velarde
Obesity, a worldwide epidemic, has become a major health burden because it is usually accompanied by an increased risk for insulin resistance, diabetes, hypertension, cardiovascular diseases, and even some kinds of cancer. It also results in associated increases in healthcare expenditures and labor and economic consequences. There are also other fields of medicine and biology where obesity or being overweight play a major role, such as high-altitude illnesses (acute mountain sickness, hypoxic pulmonary hypertension, and chronic mountain sickness), where an increasing relationship among these two morbid statuses has been demonstrated...
August 16, 2017: Obesity Facts
https://www.readbyqxmd.com/read/28809670/cardio-pulmonary-stethoscope-clinical-validation-with-heart-failure-and-hemodialysis-patients
#3
Magdy F Iskander, Todd B Seto, Ruthsenne Rg Perron, Eunjung Lim, Farhan Qazi
OBJECTIVE: The purpose of this study is to evaluate the accuracy of a noninvasive radiofrequency-based device, the Cardio-Pulmonary Stethoscope (CPS), to monitor heart and respiration rates and detect changes in lung water content in human experiments and clinical trials. METHODS: Three human populations (healthy subjects (n=4), heart failure (n=12) and hemodialysis (n=13) patients) were enrolled in this study. The study was conducted at the University of Hawaii and The Queen's Medical Center in Honolulu, HI...
August 14, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28809080/congenital-complete-atrioventricular-block-with-pulmonary-hypertension
#4
Akiko Komori, Mamoru Ayusawa, Masataka Kato, Takahiro Nakamura, Shori Takahashi
No abstract text is available yet for this article.
August 14, 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/28808495/the-most-frequent-abca3-nonsense-mutation-p-tyr1515-y1515x-causing-lethal-neonatal-respiratory-failure-in-a-term-neonate
#5
AlNashmi AlAnazi, Ralph Epaud, Humariya Heena, Alix de Becdelievre, Abeer Mohammad Miqdad, Pascale Fanen
Defects in the surfactant biosynthesis are associated with respiratory distress syndrome, commonly occurring in premature infants due to lung immaturity. However, interstitial lung diseases have also been observed in full-term infants with mutations in the SFTPC, SFTPB, NKX2-1, or ABCA3 genes, involved in the surfactant metabolism. Herein, we report a newborn baby with neonatal respiratory distress and diffuse lung disease caused by ABCA3 mutation. The baby died at 5 weeks of age after developing pulmonary hypertension...
July 2017: Annals of Thoracic Medicine
https://www.readbyqxmd.com/read/28806628/complete-step-section-microscopic-study-of-a-swan-ganz-catheter-related-pulmonary-artery-rupture-a-frequently-lethal-complication-that-to-our-knowledge-has-not-had-a-comprehensive-microscopic-examination-case-report-and-literature-review
#6
Ya Xu, L Clarke Stout
BACKGROUND: Introduced in 1970, the Swan-Ganz catheter (SGC) soon became widely used because of its unique usefulness in managing intensive care patients. Unfortunately, SGC usage was complicated by pulmonary artery rupture (PAR) with a 50% mortality rate that led to a near banning of the SCG in the late 1980s. Increasing knowledge and decreasing incidence of SGC-related PARs (SGPARs) led to the current feeling that the present SGPAR incidence is now low enough to tolerate given the lives saved by SGC usage...
July 4, 2017: Cardiovascular Pathology: the Official Journal of the Society for Cardiovascular Pathology
https://www.readbyqxmd.com/read/28806531/tidal-carbon-dioxide-as-a-prognostic-feature-in-inoperable-chronic-thromboembolic-pulmonary-hypertension
#7
Manuel J Richter, Khodr Tello, Katrin Milger, Hossein A Ghofrani, Henning Gall
No abstract text is available yet for this article.
August 14, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28806530/reply-tidal-carbon-dioxide-as-a-prognostic-feature-in-inoperable-chronic-thromboembolic-pulmonary-hypertension
#8
Caitlin E Welch, Anna R Hemnes
No abstract text is available yet for this article.
August 14, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28805015/stromelysin-2-mmp-10-a-novel-mediator-of-vascular-remodeling-underlying-pulmonary-hypertension-associated-with-systemic-sclerosis
#9
Jérôme Avouac, Christophe Guignabert, Anna Maria Hoffmann-Vold, Barbara Ruiz, Peter Dorfmuller, Sonia Pezet, Olivia Amar, Ly Tu, Jérôme Van Wassenhove, Jérémy Sadoine, David Launay, Muriel Elhai, Anne Cauvet, Arun Subramaniam, Robert Resnick, Eric Hachulla, Øyvind Molberg, André Kahan, Marc Humbert, Yannick Allanore
OBJECTIVE: To decipher the role of gene candidates involved in pulmonary hypertension (PH) associated with systemic sclerosis (SSc). METHODS: Gene candidates were identified through microarray experiments performed on Affymetrix GeneChip(®) Human Exon 1.0 ST Arrays in endothelial progenitor cell (EPC)-derived endothelial cells (ECs) issued from patients with SSc-PH, SSc without PH and controls. Expression of identified candidates was assessed by quantitative sandwich ELISA in the serum and by immunohistochemistry in lesional lung tissue...
August 13, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28801346/pan-ppar-agonist-iva337-is-effective-in-experimental-lung-fibrosis-and-pulmonary-hypertension
#10
Jerome Avouac, Irena Konstantinova, Christophe Guignabert, Sonia Pezet, Jeremy Sadoine, Thomas Guilbert, Anne Cauvet, Ly Tu, Jean-Michel Luccarini, Jean-Louis Junien, Pierre Broqua, Yannick Allanore
OBJECTIVE: To evaluate the antifibrotic effects of the pan-peroxisome proliferator-activated receptor (PPAR) agonist IVA337 in preclinical mouse models of pulmonary fibrosis and related pulmonary hypertension (PH). METHODS: IVA337 has been evaluated in the mouse model of bleomycin-induced pulmonary fibrosis and in Fra-2 transgenic mice, this latter being characterised by non-specific interstitial pneumonia and severe vascular remodelling of pulmonary arteries leading to PH...
August 11, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28801243/peroxiredoxin-2-plays-a-pivotal-role-as-multimodal-cytoprotector-in-the-early-phase-of-pulmonary-hypertension
#11
Enrica Federti, Alessandro Matte', Alessandra Ghigo, Immacolata Andolfo, Cimino James, Angela Siciliano, Christophe Leboeuf, Anne Janin, Francesco Manna, Soo Young Choi, Achille Iolascon, Elisabetta Beneduce, Davide Melisi, Dae Won Kim, Sonia Levi, Lucia De Franceschi
Pulmonary-artery-hypertension (PAH) is a life-threatening and highly invalidating chronic disorder. Chronic oxidation contributes to lung damage and disease progression. Peroxiredoxin-2 (Prx2) is a typical 2-cysteine (Cys) peroxiredoxin but its role on lung homestasis is yet to be fully defined. Here, we showed that Prx2(-/-) mice displayed chronic lung inflammatory disease associated with (i) abnormal pulmonary vascular dysfunction; and (ii) increased markers of extracellular-matrix remodeling. Hypoxia was used to induce PAH...
August 8, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28801076/early-development-of-right-ventricular-ischemic-lesions-in-a-novel-large-animal-model-of-acute-right-heart-failure-in-chronic-thromboembolic-pulmonary-hypertension
#12
David Boulate, Jennifer Arthur Ataam, Andrew J Connolly, Genevieve Giraldeau, Myriam Amsallem, Benoit Decante, Lilia Lamrani, Elie Fadel, Peter Dorfmuller, Frederic Perros, Francois Haddad, Olaf Mercier
BACKGROUND: Our aim was to develop a model of acute right heart failure (ARHF) in the setting of pulmonary hypertension and to characterize acute right ventricular lesions that develop early after hemodynamic restoration. METHODS AND RESULTS: We used a described piglet model of chronic pulmonary hypertension (cPH) induced by pulmonary artery occlusions. We induced ARHF in animals with cPH (ARHF-cPH group, n=9) by volume loading and iterative acute pulmonary embolisms until hemodynamic compromise followed by dobutamine infusion for hemodynamic restoration prior to sacrifice for right ventricular tissue evaluation...
August 8, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/28800996/con-preinduction-pulmonary-artery-catheter-placement-is-advisable-in-patients-with-right-ventricular-dysfunction-secondary-to-severe-pulmonary-hypertension
#13
Jennifer Hargrave
No abstract text is available yet for this article.
August 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28800253/targeting-pulmonary-endothelial-hemoglobin-%C3%AE-improves-nitric-oxide-signaling-and-reverses-pulmonary-artery-endothelial-dysfunction
#14
Roger A Alvarez, Megan P Miller, Scott A Hahn, Joseph C Galley, Eileen Bauer, Timothy Bachman, Jian Hu, John Sembrat, Dmitry Goncharov, Ana L Mora, Mauricio Rojas, Elena Goncharova, Adam C Straub
RATIONALE: Pulmonary hypertension is characterized by pulmonary endothelial dysfunction. Previous work showed that systemic artery endothelial cells express hemoglobin α to control nitric oxide diffusion, but the role of this system in the pulmonary circulation has not been evaluated. OBJECTIVES: We hypothesize that up-regulation of hemoglobin α in pulmonary endothelial cells contributes to nitric oxide depletion and pulmonary vascular dysfunction in pulmonary hypertension...
August 11, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28798794/optical-coherence-tomography-improves-the-results-of-balloon-pulmonary-angioplasty-in-inoperable-chronic-thrombo-embolic-pulmonary-hypertension
#15
Aleksander Araszkiewicz, Stanisław Jankiewicz, Magdalena Łanocha, Magdalena Janus, Tatiana Mularek-Kubzdela, Maciej Lesiak
No abstract text is available yet for this article.
2017: Postępy W Kardiologii Interwencyjnej, Advances in Interventional Cardiology
https://www.readbyqxmd.com/read/28798258/preserved-right-ventricular-integrity-in-a-new-telemetric-rat-model-of-severe-pulmonary-hypertension
#16
Catharina Schreiber, Magdalena S Eilenberg, Attila Kiss, Helga Bergmeister, Bruno K Podesser, Julia Mascherbauer, Diana Bonderman
Telemetric monitoring of hemodynamic parameters has become an established standard in experimental models of pulmonary arterial hypertension (PAH). To that purpose, a dedicated catheter is usually implanted through the right ventricular wall of study animals. Drawbacks of this standard technique are: obtained pressures are from the right ventricle and therefore only surrogates for pulmonary arterial pressures, and furthermore, right ventricular myocardium is always damaged to a certain degree. To overcome shortcomings of standard hemodynamic assessment, we modified an established rat model, where severe PAH is induced by left-sided pneumonectomy plus monocrotaline injection...
August 10, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28798257/aquaporin-1-mediated-changes-in-pulmonary-arterial-smooth-muscle-cell-migration-and-proliferation-involve-%C3%AE-catenin
#17
Xin Yun, Haiyang Jiang, Ning Lai, Jian Wang, Larissa A Shimoda
Exposure to hypoxia induces migration and proliferation of pulmonary arterial smooth muscle cells (PASMCs), leading to vascular remodeling and contributing to the development of hypoxic pulmonary hypertension. The mechanisms controlling PASMC growth and motility are incompletely understood, although aquaporin 1 plays an important role. In tumor, kidney and stem cells, AQP1 has been shown to interact with β-catenin, a dual function protein that activates the transcription of crucial target genes (i.e., c-Myc and cyclin D1) related to cell migration and proliferation...
August 10, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28798201/remote-ischemic-preconditioning-does-not-prevent-acute-mountain-sickness-after-rapid-ascent-to-3450-m
#18
Marc M Berger, Franziska Macholz, Lukas Lehmann, Daniel Dankl, Marcel Hochreiter, Bernhard Bacher, Peter Bärtsch, Heimo Mairbäurl
Remote ischemic preconditioning (RIPC) has been shown to protect remote organs, such as the brain and the lung, from damage induced by subsequent hypoxia or ischemia. Acute mountain sickness (AMS) is a syndrome of non-specific neurologic symptoms and in high altitude pulmonary edema excessive hypoxic pulmonary vasoconstriction (HPV) plays a pivotal role. We hypothesized that RIPC protects the brain from AMS and attenuates the magnitude of HPV after rapid ascent to 3450 m. Forty non-acclimatized volunteers were randomized into 2 groups...
August 10, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28797558/prevalence-and-predictors-associated-with-severe-pulmonary-hypertension-in-copd
#19
Mitra Samareh Fekri, Mehdi Torabi, Sara Azizi Shoul, Moghaddameh Mirzaee
BACKGROUND: Pulmonary hypertension (PH) is one of the most common complications of COPD (chronic obstructive pulmonary disease), but its severe form is uncommon. Various factors play an important role in the occurrence and severity of pulmonary hypertension in patients. METHODS: This cross-sectional study was performed on patients with COPD referred to an emergency department over a one-year period. The tests-including complete blood count (CBC) and arterial blood gas (ABG), pulmonary functional test (PFT) and echocardiography-were performed for all patients to measure mPAP (mean pulmonary artery pressure), ejection fraction (EF) and body mass index (BMI)...
August 5, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28795615/international-survey-on-the-perioperative-management-of-pulmonary-endarterectomy-the-perfusion-perspective
#20
Roger D P Stanzel, Johannes Gehron, Matthias Wolff, Natalie Striegl, Peter Roth, Rolf-Hasso Boedeker, Christine Scheibelhut, Johannes Herrmann, Ingeborg Welters, Eckhard Mayer, Matthias Scheffler
INTRODUCTION: Pulmonary endarterectomy (PEA) is the most effective treatment available for chronic thromboembolic pulmonary hypertension (CTEPH). Patient selection, surgical technique and perioperative management have improved patient outcomes, which are traditionally linked to surgical and center experience. However, optimal perfusion care has not been well defined. The goal of the international survey was to better characterize the contemporary perfusion management of PEA and highlight similarities and controversies...
August 1, 2017: Perfusion
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