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https://www.readbyqxmd.com/read/29656317/inflammatory-response-of-pulmonary-artery-smooth-muscle-cells-exposed-to-oxidative-and-biophysical-stress
#1
Joanna Costa, Yan Zhu, Timothy Cox, Paul Fawcett, Thomas Shaffer, Deepthi Alapati
Pulmonary hypertension in the neonate requires treatment with oxygen and positive pressure ventilation, both known to induce lung injury. The direct response of pulmonary artery smooth muscle cells, the most abundant cells in the artery wall, to the stress of positive pressure and hyperoxia has not been previously studied. Pulmonary artery smooth muscle cells were cultured in temperature- and pressure-controlled air-tight chambers under conditions of positive pressure or hyperoxia for 24 h. Control cells were cultured in room air under atmospheric pressure...
April 14, 2018: Inflammation
https://www.readbyqxmd.com/read/29655950/strengths-and-weaknesses-of-echocardiography-for-the-diagnosis-of-pulmonary-hypertension
#2
Michele D'Alto, Eduardo Bossone, Alexander R Opotowsky, Stefano Ghio, Lawrence G Rudski, Robert Naeije
Doppler echocardiography is extensively used in clinical practice for the screening and detection of pulmonary hypertension (PH). It allows for accurate estimates of pulmonary artery pressures, but with moderate precision, which explains why it is more appropriate for population studies than for definitive diagnosis of PH in individual patients. Moreover, echocardiography allows one to distinguish different patterns of right ventricular remodelling in various forms of PH and enables clinically satisfactory differentiation between pre- and post-capillary PH...
April 7, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29655882/incidence-and-mortality-of-adults-with-pulmonary-hypertension-and-congenital-heart-disease
#3
Sara Søndergaard Schwartz, Nicolas Madsen, Henning Bækgaard Laursen, Russel Hirsch, Morten Smærup Olsen
Reports on pulmonary hypertension (PH) in the aging congenital heart disease (CHD) population are few and focused on arterial PH and patients with systemic-to-pulmonary shunts. Our objective was to estimate incidence and mortality of adult-onset PH in the CHD population. Using Danish nationwide registries, we identified all patients diagnosed with CHD from 1963 to 1974 and 1977 to 2012. Patients were matched 1:10 by birth year and gender with general population subjects. Between 1977 and 2013 adults >18 years of age were followed up until PH diagnosis, death, or emigration, whichever came first, using data from the Danish National Registry of Patients...
March 14, 2018: American Journal of Cardiology
https://www.readbyqxmd.com/read/29655622/-pulmonary-arterial-hypertension-associated-with-human-immunodeficiency-virus-thirty-years-after-its-description
#4
José Luis Sandoval Gutiérrez
The development of pulmonary arterial hypertension associated with human immunodeficiency virus reduces the probability of survival in the patient affected compared to those without cardiopulmonary disease. The pathophysiology is uncertain. There are several lines of research to associate the different proteins of the virus in the endothelial lesion. From a therapeutic point of view there are treatment modalities that allow an acceptable life expectancy.
April 11, 2018: Archivos de Cardiología de México
https://www.readbyqxmd.com/read/29653363/trapidil-improves-hemodynamic-echocardiographic-and-redox-state-parameters-of-right-ventricle-in-monocrotaline-induced-pulmonary-arterial-hypertension-model
#5
Patrick Türck, Denise Santos Lacerda, Cristina Campos Carraro, Bruna Gazzi de Lima-Seolin, Rayane Brinck Teixeira, Jéssica Hellen Poletto Bonetto, Rafael Colombo, Paulo Cavalheiro Schenkel, Adriane Belló-Klein, Alex Sander da Rosa Araujo
BACKGROUND: Pulmonary arterial hypertension is a disease characterized by increased pulmonary vascular resistance and redox imbalance, leading to failure of right ventricle. Trapidil has been described to improve the redox balance and cardiac conditions. HYPOTHESIS: Trapidil can improve the redox balance and contribute to functional improvements of the RV in PAH. METHODS AND RESULTS: Male, 5week-old Wistar rats were divided into four groups: Control, Control + Trapidil, Monocrotaline and Monocrotaline + Trapidil...
April 10, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29653129/delivering-drugs-to-the-lungs-the-history-of-repurposing-in-the-treatment-of-respiratory-diseases
#6
Stephen P Newman
The repurposing of drug delivery by the pulmonary route has been applied to treatment and prophylaxis of an increasingly wide range of respiratory diseases. Repurposing has been most successful for the delivery of inhaled bronchodilators and corticosteroids in patients with asthma and chronic obstructive pulmonary disease (COPD). Repurposing utilizes the advantages that the pulmonary route offers in terms of more targeted delivery to the site of action, the use of smaller doses, and a lower incidence of side-effects...
April 10, 2018: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/29652794/the-voice-of-the-heart-vowel-like-sound-in-pulmonary-artery-hypertension
#7
Mohamed Elgendi, Prashant Bobhate, Shreepal Jain, Long Guo, Jennifer Rutledge, Yashu Coe, Roger Zemp, Dale Schuurmans, Ian Adatia
Increased blood pressure in the pulmonary artery is referred to as pulmonary hypertension and often is linked to loud pulmonic valve closures. For the purpose of this paper, it was hypothesized that pulmonary circulation vibrations will create sounds similar to sounds created by vocal cords during speech and that subjects with pulmonary artery hypertension (PAH) could have unique sound signatures across four auscultatory sites. Using a digital stethoscope, heart sounds were recorded at the cardiac apex, 2nd left intercostal space (2LICS), 2nd right intercostal space (2RICS), and 4th left intercostal space (4LICS) undergoing simultaneous cardiac catheterization...
April 13, 2018: Diseases (Basel)
https://www.readbyqxmd.com/read/29652681/direct-ultrasound-of-the-pulmonary-artery-helps-diagnose-a-rare-cause-of-right-ventricular-failure-after-heart-transplantation-a-case-report
#8
John S McNeil, Si M Pham, Julie L Huffmyer
Pulmonary artery anastomosis stenosis is a rare cause of right ventricular failure after orthotopic heart transplantation. In this case report, direct ultrasound of the pulmonary artery helped diagnose stenosis at a location not visible on transesophageal echocardiography or even with standard epicardial ultrasound views. It is important to evaluate all vascular anastomoses after heart or lung transplantation because surgical revision of these lesions is facile, but if left undiagnosed, significant morbidity or mortality is likely...
April 15, 2018: A&A practice
https://www.readbyqxmd.com/read/29652543/cardioprotection-by-intermittent-hypoxia-conditioning-evidence-mechanisms-and-therapeutic-potential
#9
Robert T Mallet, Eugenia B Manukhina, Steven S Ruelas, James L Caffrey, H Fred Downey
The calibrated application of limited duration, cyclic, moderately intense hypoxia-reoxygenation increases cardiac resistance to ischemia-reperfusion stress. These intermittent hypoxic conditioning (IHC) programs consistently produce striking reductions in myocardial infarction and ventricular tachyarrhythmias following coronary artery occlusion and reperfusion, and in many cases, improved contractile function and coronary blood flow. These IHC protocols are fundamentally different from those used to simulate sleep apnea, a recognized cardiovascular risk factor...
April 13, 2018: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29652520/hemolysis-induced-lung-vascular-leakage-contributes-to-the-development-of-pulmonary-hypertension
#10
Olga Rafikova, Elissa R Williams, Matthew L McBride, Marina Zemskova, Anup Srivastava, Vineet Nair, Ankit A Desai, Paul R Langlais, Evgeny Zemskov, Marc Simon, Lawrence J Mandarino, Ruslan Rafikov
RATIONALE: While hemolytic anemia-associated pulmonary hypertension (PH) and pulmonary arterial hypertension (PAH) are more common than the prevalence of idiopathic PAH alone, the role of hemolysis in the development of PAH is poorly characterized. OBJECTIVES: We hypothesized that hemolysis independently contributes to PAH pathogenesis via endothelial barrier dysfunction with resulting perivascular edema and inflammation. METHODS: Plasma samples from patients with and without PAH (both confirmed by right heart catheterization) were used to measure free hemoglobin (Hb) and its correlation with PAH severity...
April 13, 2018: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/29652272/comparison-of-immediate-extubation-versus-ultrafast-tracking-strategy-in-the-management-of-off-pump-coronary-artery-bypass-surgery
#11
Amarja Sachin Nagre, Nagesh P Jambures
Introduction: Ultrafast tracking of anesthesia (UFTA) is practiced routinely, whereas immediate on-table extubation after off-pump coronary artery bypass (OPCAB) grafting surgery has many concerns. The purpose of our study was to evaluate the safety and feasibility of immediate extubation (IE) versus UFTA. Methods: Sixty patients were enrolled who underwent OPCAB surgery. The two groups IE and UFTA had thirty patients each. Inclusion criteria were patients for OPCAB surgery including left main stenosis...
April 2018: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/29652271/prophylactic-preoperative-levosimendan-for-off-pump-coronary-artery-bypass-grafting-in-patients-with-left-ventricular-dysfunction-single-centered-randomized-prospective-study
#12
Pushkar Mahendra Desai, Manjula S Sarkar, Sanjeeta R Umbarkar
Background: Off-pump coronary artery bypass surgery (OPCAB) is often complicated by hemodynamic instability, especially in patients with prior left ventricular (LV) dysfunction and appropriate choice of inotrope plays a vital role in perioperative management of these patients. Aim and Objective: To study hemodynamic effects and immediate outcome of prophylactic infusion of levosimendan in patients with the LV dysfunction undergoing OPCAB surgery and whether this strategy helps in successful conduct of OPCAB surgery...
April 2018: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/29650961/identification-of-rare-sequence-variation-underlying-heritable-pulmonary-arterial-hypertension
#13
Stefan Gräf, Matthias Haimel, Marta Bleda, Charaka Hadinnapola, Laura Southgate, Wei Li, Joshua Hodgson, Bin Liu, Richard M Salmon, Mark Southwood, Rajiv D Machado, Jennifer M Martin, Carmen M Treacy, Katherine Yates, Louise C Daugherty, Olga Shamardina, Deborah Whitehorn, Simon Holden, Micheala Aldred, Harm J Bogaard, Colin Church, Gerry Coghlan, Robin Condliffe, Paul A Corris, Cesare Danesino, Mélanie Eyries, Henning Gall, Stefano Ghio, Hossein-Ardeschir Ghofrani, J Simon R Gibbs, Barbara Girerd, Arjan C Houweling, Luke Howard, Marc Humbert, David G Kiely, Gabor Kovacs, Robert V MacKenzie Ross, Shahin Moledina, David Montani, Michael Newnham, Andrea Olschewski, Horst Olschewski, Andrew J Peacock, Joanna Pepke-Zaba, Inga Prokopenko, Christopher J Rhodes, Laura Scelsi, Werner Seeger, Florent Soubrier, Dan F Stein, Jay Suntharalingam, Emilia M Swietlik, Mark R Toshner, David A van Heel, Anton Vonk Noordegraaf, Quinten Waisfisz, John Wharton, Stephen J Wort, Willem H Ouwehand, Nicole Soranzo, Allan Lawrie, Paul D Upton, Martin R Wilkins, Richard C Trembath, Nicholas W Morrell
Pulmonary arterial hypertension (PAH) is a rare disorder with a poor prognosis. Deleterious variation within components of the transforming growth factor-β pathway, particularly the bone morphogenetic protein type 2 receptor (BMPR2), underlies most heritable forms of PAH. To identify the missing heritability we perform whole-genome sequencing in 1038 PAH index cases and 6385 PAH-negative control subjects. Case-control analyses reveal significant overrepresentation of rare variants in ATP13A3, AQP1 and SOX17, and provide independent validation of a critical role for GDF2 in PAH...
April 12, 2018: Nature Communications
https://www.readbyqxmd.com/read/29650544/evaluation-and-management-of-right-sided-heart-failure-a-scientific-statement-from-the-american-heart-association
#14
REVIEW
Marvin A Konstam, Michael S Kiernan, Daniel Bernstein, Biykem Bozkurt, Miriam Jacob, Navin K Kapur, Robb D Kociol, Eldrin F Lewis, Mandeep R Mehra, Francis D Pagani, Amish N Raval, Carey Ward
BACKGROUND AND PURPOSE: The diverse causes of right-sided heart failure (RHF) include, among others, primary cardiomyopathies with right ventricular (RV) involvement, RV ischemia and infarction, volume loading caused by cardiac lesions associated with congenital heart disease and valvular pathologies, and pressure loading resulting from pulmonic stenosis or pulmonary hypertension from a variety of causes, including left-sided heart disease. Progressive RV dysfunction in these disease states is associated with increased morbidity and mortality...
April 12, 2018: Circulation
https://www.readbyqxmd.com/read/29650343/safety-efficacy-and-management-of-subcutaneous-treprostinil-infusions-in-the-treatment-of-severe-pediatric-pulmonary-hypertension
#15
Marilyne Levy, Maria-Jesus Del Cerro, Sophie Nadaud, Karunakar Vadlamudi, Elizabeth Colgazier, Jeff Fineman, Damien Bonnet, Ian Adatia
BACKGROUND: Continuous intravenous epoprostenol was the first treatment approved for pulmonary arterial hypertension (PAH) but administration through a central venous line carries risks of thrombosis and sepsis, particularly in children. We sought to evaluate the safety, efficacy and management of subcutaneous (SC) treprostinil in children with PAH. METHODS: Fifty-six children (median age 65, range 1-200 months) were treated with SC treprostinil. Clinical status, echocardiography, NT-proBNP, and site pain and infection were evaluated...
March 15, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29650238/incidence-timing-causes-and-predictors-of-early-and-late-re-hospitalization-in-patients-who-underwent-percutaneous-mitral-valve-repair-with-the-mitraclip-system
#16
Carmelo Grasso, Antonio Popolo Rubbio, Davide Capodanno, Sergio Buccheri, Maria Elena Di Salvo, Stefano Cannata, Salvatore Scandura, Sarah Mangiafico, Silvia Farruggio, Tatiana Salerno, Jessica De Santis, Simona Sanalitro, Anna Caggegi, Giuseppe Castania, Marco Barbanti, Piera Capranzano, Corrado Tamburino
The pattern and reasons for re-hospitalization (RH) after MitraClip implantation are not well characterized. A total of 322 consecutive MitraClip patients were included, with data stratified by RH status. Multivariate analyses were conducted to identify predictors of early (30-day) and late (30-day to 12-month) RH. Eighty-nine patients (27.6%) were readmitted to hospital during the study period and early RH occurred in 27%. The median time from MitraClip to RH was 99 days. RH was mostly related to cardiovascular causes (66...
February 12, 2018: American Journal of Cardiology
https://www.readbyqxmd.com/read/29649794/effects-of-volume-overload-and-current-techniques-for-the-assessment-of-fluid-status-in-patients-with-renal-disease
#17
Can Ekinci, Merve Karabork, Dimitrie Siriopol, Neris Dincer, Adrian Covic, Mehmet Kanbay
Volume overload is an important, may be the foremost, independent prognostic factor determining the outcome of hemodialysis patients. Therefore, it is crucial to measure fluid status of these patients and avoid volume overload. This review aims to evaluate volume overload, its effects on patients with renal diseases and current methodologies measuring volume status in the body. These techniques will be first classified as clinical evaluation and non-clinical and/or instrumental techniques, which includes biomarkers, ultrasonography, relative blood volume monitoring, bioimpedance, echocardiography, pulmonary artery catheterization, esophageal and/or suprasternal Doppler, and blood viscosity...
April 12, 2018: Blood Purification
https://www.readbyqxmd.com/read/29649782/balloon-pulmonary-angioplasty-in-a-patient-with-prostate-cancer-and-chronic-thromboembolic-pulmonary-hypertension
#18
Yolanda Bryce, Ernesto Santos
Chronic thromboembolic pulmonary hypertension (CTEPH) is a subtype of pulmonary hypertension characterized by a mean pulmonary artery pressure ≥25 mm Hg due to obstructive fibrotic thromboembolic material in the pulmonary arteries. Malignancy is a significant risk for developing CTEPH. The option for inoperable CTEPH is largely medical with variable outcomes. Balloon pulmonary angioplasty (BPA) is a promising option for inoperable patients given distal-type CTEPH, co-morbidities, or residual pulmonary hypertension after surgery...
April 6, 2018: Clinical Imaging
https://www.readbyqxmd.com/read/29649319/unraveling-endothelin-1-induced-hypercontractility-of-human-pulmonary-artery-smooth-muscle-cells-from-patients-with-pulmonary-arterial-hypertension
#19
Jamie L Wilson, Rod Warburton, Linda Taylor, Deniz Toksoz, Nicholas Hill, Peter Polgar
Contraction of human pulmonary artery smooth muscle cells (HPASMC) isolated from pulmonary arterial hypertensive (PAH) and normal (non-PAH) subject lungs was determined and measured with real-time electrical impedance. Treatment of HPASMC with vasoactive peptides, endothelin-1 (ET-1) and bradykinin (BK) but not angiotensin II, induced a temporal decrease in the electrical impedance profile mirroring constrictive morphological change of the cells which typically was more robust in PAH as opposed to non-PAH cells...
2018: PloS One
https://www.readbyqxmd.com/read/29648694/safety-of-nifedipine-in-threatened-preterm-labor-investigation-by-three-dimensional-echocardiography
#20
Leonti Grin, Avishag Laish-Farkash, Simon Shenhav, Xavier Piltz, Liah Ganelin, Mark Rabinovich, Eyal Y Anteby, Chaim Yosefy
OBJECTIVE: To evaluate atrial and ventricular parameters using real time three-dimensional transthoracic echocardiography (RT3DTTE) in women treated with nifedipine in the early third trimester (III-T) of pregnancy. METHODS: A prospective single-subject design study in a university-affiliated hospital, where each participant served as her own control. We studied 25 pregnant women at a gestational age of 25-33 weeks with TPTL prior to vs 48 hours postnifedipine treatment...
April 12, 2018: Echocardiography
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