keyword
MENU ▼
Read by QxMD icon Read
search

Exercise induced pulmonary hypertension

keyword
https://www.readbyqxmd.com/read/29790948/cardioprotection-induced-by-activation-of-gper-in-ovariectomized-rats-with-pulmonary-hypertension
#1
Allan K N Alencar, Guilherme C Montes, Daniele G Costa, Luiza V P Mendes, Ananssa M S Silva, Sabrina T Martinez, Margarete M Trachez, Valéria do M N Cunha, Tadeu L Montagnoli, Aline G M Fraga, Hao Wang, Leanne Groban, Carlos A M Fraga, Roberto T Sudo, Gisele Zapata-Sudo
Pulmonary hypertension (PH) is a disease of women (female-to-male ratio 4:1), and is associated with cardiac and skeletal muscle dysfunction. Herein, the activation of a new estrogen receptor (GPER) by the agonist G1 was evaluated in oophorectomized rats with monocrotaline (MCT)-induced PH. Depletion of estrogen was induced by bilateral oophorectomy (OVX) in Wistar rats. Experimental groups included SHAM or OVX rats that received a single intraperitoneal injection of MCT (60 mg/kg) for PH induction. Animals received s...
May 21, 2018: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/29748074/-altitude-and-the-right-heart
#2
REVIEW
R Naeije
INTRODUCTION: Altitude is associated with a decrease in partial pressure of oxygen. Hypoxia induces pulmonary vasoconstriction with subsequent fixed increase in pulmonary artery pressure, and eventual right heart failure. CURRENT KNOWLEDGE: High altitude exposure is associated with an increase in pulmonary artery pressure that is proportional to initial vasoconstriction. Echocardiographic evaluations on a large number of subjects show that the altitude-induced increase in pulmonary pressure is generally modest and does not exceed the 25mmHg that are diagnostic of pulmonary hypertension...
May 7, 2018: Revue des Maladies Respiratoires
https://www.readbyqxmd.com/read/29629733/exercise-hemodynamics-for-the-diagnosis-of-diastolic-dysfunction-in-dyspneic-patients-with-systemic-sclerosis
#3
Anne Graham Cummiskey, Amit Segev, Michael Segel, Jonathan Buber, Victor Guetta, Israel M Barbash, Dan Elian, Elad Asher, Ori Vaturi, Paul Fefer
OBJECTIVES: To assess the added diagnostic value of using exercise hemodynamics during RHC in assessment of patients with symptomatic SSc. METHODS: We performed 22 RHCs in 17 SSc patients with dyspnea and/or pulmonary arterial hypertension (PAH). Exercise was performed in 15 RHCs using isotonic arm exercises while holding a 1 kg weight in each hand. Measurements of pulmonary arterial pressure (PAP), pulmonary arterial wedge pressure (PAWP), and cardiac output (CO) were taken at rest and during peak exercise...
April 2018: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/29605474/hemodynamic-mechanisms-of-exercise-induced-pulmonary-hypertension-in-patients-with-lymphangioleiomyomatosis-the-role-of-exercise-stress-echocardiography
#4
Andrea Sonaglioni, Massimo Baravelli, Roberto Cassandro, Olga Torre, Davide Elia, Claudio Anzà, Sergio Harari
BACKGROUND: The pathogenesis of pulmonary hypertension (PH) in lymphangioleiomyomatosis (LAM) has not yet been completely clarified. The aim of this study was to conduct a noninvasive evaluation of the main hemodynamic mechanisms of exercise-induced PH in patients with LAM, assessed using exercise stress echocardiography. METHODS: Fifteen patients with LAM (mean age, 47 ± 13 years; all women) without resting PH were enrolled in a prospective single-center study and compared with 15 healthy female control subjects (mean age, 45...
March 28, 2018: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/29600086/exercise-training-in-pulmonary-arterial-hypertension
#5
REVIEW
Laura Adelaide Dalla Vecchia, Maurizio Bussotti
Pulmonary arterial hypertension (PAH) is characterized by a continuous increase in pre-capillary pulmonary vascular resistance (PVR) with a progressive reduction of cardiac output (CO). Similar to what occurs in left heart failure (HF), this represents the initial phase of a syndrome characterized by the progressive development of dyspnea and fatigue with increasing deterioration of exercise tolerance. Although the therapies introduced in the last two decades have determined a significant improvement of the clinical conditions of PAH patients, they have a little impact on exercise capacity and prognosis...
January 2018: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29584808/urocortin-2-improves-right-ventricular-function-and-attenuates-pulmonary-arterial-hypertension
#6
Rui Adão, Pedro Mendes-Ferreira, Diana Santos-Ribeiro, Carolina Maia-Rocha, Luís Pimentel, Cláudia Pinto, Eamon P Mulvaney, Helen M Reid, B Therese Kinsella, François Potus, Sandra Breuils-Bonnet, Miriam T Rademaker, Steeve Provencher, Sebastién Bonnet, Adelino Leite-Moreira, Carmen Brás-Silva
Aims: Pulmonary arterial hypertension (PAH) is a devastating disease and treatment options are limited. Urocortin-2 (Ucn-2) has shown promising therapeutic effects in experimental and clinical left ventricular heart failure (HF). Our aim was to analyze the expression of Ucn-2 in human and experimental PAH, and to investigate the effects of human Ucn-2 (hUcn-2) administration in rats with monocrotaline (MCT)-induced pulmonary hypertension (PH). Methods and Results: Tissue samples were collected from patients with and without PAH and from rats with MCT-induced PH; and hUcn-2 (5ug/kg, bi-daily, i...
March 23, 2018: Cardiovascular Research
https://www.readbyqxmd.com/read/29487995/treatment-of-atrial-fibrillation-in-patients-with-enhanced-sympathetic-tone-by-pulmonary-vein-isolation-or-pulmonary-vein-isolation-and-renal-artery-denervation-clinical-background-and-study-design-the-asaf-trial-ablation-of-sympathetic-atrial-fibrillation
#7
Mark R de Jong, Annemiek F Hoogerwaard, Ahmet Adiyaman, Jaap Jan J Smit, Anand R Ramdat Misier, Jan-Evert Heeg, Boudewijn A A M van Hasselt, Isabelle C Van Gelder, Harry J G M Crijns, Ignacio Fernández Lozano, Jorge E Toquero Ramos, F Javier Alzueta, Borja Ibañez, José M Rubio, Fernando Arribas, José M Porres Aracama, Josep Brugada, Lluís Mont, Arif Elvan
BACKGROUND: Hypertension is an important, modifiable risk factor for the development of atrial fibrillation (AF). Even after pulmonary vein isolation (PVI), 20-40% experience recurrent AF. Animal studies have shown that renal denervation (RDN) reduces AF inducibility. One clinical study with important limitations suggested that RDN additional to PVI could reduce recurrent AF. OBJECTIVE: The goal of this multicenter randomized controlled study is to investigate whether RDN added to PVI reduces AF recurrence...
February 27, 2018: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29382472/exercise-induced-pulmonary-hypertension-translating-pathophysiological-concepts-into-clinical-practice
#8
Robert Naeije, Rajeev Saggar, David Badesch, Sanjay Rajagopalan, Luna Gargani, Franz Rischard, Francesco Ferrara, Alberto M Marra, Michele D' Alto, Todd M Bull, Rajan Saggar, Ekkehard Grünig, Eduardo Bossone
Exercise stress testing of the pulmonary circulation for the diagnosis of latent or early-stage pulmonary hypertension (PH) is gaining acceptance. There is emerging consensus to define exercise-induced PH by a mean pulmonary artery pressure > 30 mm Hg at a cardiac output < 10 L/min and a total pulmonary vascular resistance> 3 Wood units at maximum exercise, in the absence of PH at rest. Exercise-induced PH has been reported in association with a bone morphogenetic receptor-2 gene mutation, in systemic sclerosis, in left heart conditions, in chronic lung diseases, and in chronic pulmonary thromboembolism...
January 31, 2018: Chest
https://www.readbyqxmd.com/read/29352073/right-ventricular-myofilament-functional-differences-in-humans-with-systemic-sclerosis-associated-versus-idiopathic-pulmonary-arterial-hypertension
#9
Steven Hsu, Kristen M Kokkonen-Simon, Jonathan A Kirk, Todd M Kolb, Rachel L Damico, Stephen C Mathai, Monica Mukherjee, Ami A Shah, Fredrick M Wigley, Kenneth B Margulies, Paul M Hassoun, Marc K Halushka, Ryan J Tedford, David A Kass
Background -Patients with systemic sclerosis-associated pulmonary arterial hypertension (SSc-PAH) have a far worse prognosis than those with idiopathic PAH (IPAH). In the intact heart, SSc-PAH exhibits depressed rest and reserve right ventricular (RV) contractility as compared to IPAH. We tested whether this disparity involves underlying differences in myofilament function. Methods -Cardiac myocytes were isolated from RV septal endomyocardial biopsies from patients with SSc-PAH, IPAH, or SSc with exertional dyspnea but no resting PAH (SSc-d); control RV septal tissue was obtained from non-diseased donor hearts (6-7/group)...
January 19, 2018: Circulation
https://www.readbyqxmd.com/read/29184292/cardiopulmonary-rehabilitation-program-impact-on-prognostic-markers-in-selected-patients-with-resting-and-exercise-induced-ventilatory-inefficiency-a-clinical-trial
#10
Sherin Hassan M Mehani, Heba Ahmed A Abdeen
[Purpose] Ventilatory limitation is a common problem in patients with chronic heart failure and pulmonary hypertension. Excess ventilation may arise from augmented ventilatory drive, over activity of chemoreceptors and muscle ergoreceptors, or premature onset of lactic acidosis. Exertional dyspnea can cause limitations in the activities of daily living and as a result, reduced quality of life for these patients. The aim of the present study was to evaluate the effect of cardiopulmonary rehabilitation program on ventilatory efficiency for these patients...
October 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29167228/contribution-of-impaired-parasympathetic-activity-to-right-ventricular-dysfunction-and-pulmonary-vascular-remodeling-in-pulmonary-arterial-hypertension
#11
Denielli da Silva Gonçalves Bós, Cathelijne E E Van Der Bruggen, Kondababu Kurakula, Xiao-Qing Sun, Karina R Casali, Adenauer G Casali, Nina Rol, Robert Szulcek, Cris Dos Remedios, Christophe Guignabert, Ly Tu, Peter Dorfmüller, Marc Humbert, Paul J M Wijnker, Diederik W D Kuster, Jolanda van der Velden, Marie-José Goumans, Harm-Jan Bogaard, Anton Vonk-Noordegraaf, Frances S de Man, M Louis Handoko
BACKGROUND: The beneficial effects of parasympathetic stimulation have been reported in left heart failure, but whether it would be beneficial for pulmonary arterial hypertension (PAH) remains to be explored. Here, we investigated the relationship between parasympathetic activity and right ventricular (RV) function in patients with PAH, and the potential therapeutic effects of pyridostigmine (PYR), an oral drug stimulating the parasympathetic activity through acetylcholinesterase inhibition, in experimental pulmonary hypertension (PH)...
February 27, 2018: Circulation
https://www.readbyqxmd.com/read/29167118/exercise-facilitates-early-recognition-of-cardiac-and-vascular-remodeling-in-chronic-thromboembolic-pulmonary-hypertension-in-swine
#12
Kelly Stam, Richard W B van Duin, André Uitterdijk, Zongye Cai, Dirk J Duncker, Daphne Merkus
Chronic thromboembolic pulmonary hypertension (CTEPH) develops in 4% of patients after pulmonary embolism and is accompanied by an impaired exercise tolerance, which is ascribed to the increased right ventricular (RV) afterload in combination with a ventilation/perfusion (V/Q) mismatch in the lungs. The present study aimed to investigate changes in arterial Po2 and hemodynamics in response to graded treadmill exercise during development and progression of CTEPH in a novel swine model. Swine were chronically instrumented and received multiple pulmonary embolisms by 1) microsphere infusion (Spheres) over 5 wk, 2) endothelial dysfunction by administration of the endothelial nitric oxide synthase inhibitor Nω -nitro-l-arginine methyl ester (L-NAME) for 7 wk, 3) combined pulmonary embolisms and endothelial dysfunction (L-NAME + Spheres), or 4) served as sham-operated controls (sham)...
March 1, 2018: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29127236/structural-and-functional-changes-of-the-pulmonary-vasculature-after-hypoxia-exposure-in-the-neonatal-period-a-new-swine-model-of-pulmonary-vascular-disease
#13
Daphne P M de Wijs-Meijler, Richard W B van Duin, Dirk J Duncker, Urs Scherrer, Claudio Sartori, Irwin K M Reiss, Daphne Merkus
Pulmonary vascular disease (PVD) represents an underestimated and increasing clinical burden not only in the neonatal period but also later in life, when exercise tolerance is decreased. Animal models performing long-term followup after a perinatal insult are lacking. This study aimed to develop and characterize a neonatal swine model with hypoxia-induced PVD during long-term followup after reexposure to normoxia and to investigate the exercise response in this model. Piglets were exposed to a normoxic ( n = 10) or hypoxic environment ( n = 9) for 4 wk...
March 1, 2018: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29098626/micrornas-mediate-beneficial-effects-of-exercise-in-heart
#14
Yihua Bei, Lichan Tao, Dragos Cretoiu, Sanda Maria Cretoiu, Junjie Xiao
MicroRNAs (miRNAs, miRs), a group of small non-coding RNAs, repress gene expressions at posttranscriptional level in most cases and are involved in cardiovascular physiology and disease pathogenesis. Increasing evidence has proved that miRNAs are potential regulators of exercise induced cardiac growth and mediate the benefits of exercise in a variety of cardiovascular diseases. In this chapter, we will review the regulatory effects of miRNAs in cardiac adaptations to exercise, and summarize their cardioprotective effects against myocardial infarction, ischemia/reperfusion injury, heart failure, diabetic cardiomyopathy, atherosclerosis, hypertension, and pulmonary hypertension...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29047079/molecular-basis-of-nitrative-stress-in-the-pathogenesis-of-pulmonary-hypertension
#15
Colin E Evans, You-Yang Zhao
Pulmonary hypertension (PH) is a lung vascular disease with marked increases in pulmonary vascular resistance and pulmonary artery pressure (>25 mmHg at rest). In PH patients, increases in pulmonary vascular resistance lead to impaired cardiac output and reduced exercise tolerance. If untreated, PH progresses to right heart failure and premature lethality. The mechanisms that control the pathogenesis of PH are incompletely understood, but evidence from human and animal studies implicate nitrative stress in the development of PH...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29046979/medical-management-of-pulmonary-hypertension-with-unclear-and-or-multifactorial-mechanisms-group-5-is-there-a-role-for-pulmonary-arterial-hypertension-medications
#16
REVIEW
Jason Weatherald, Laurent Savale, Marc Humbert
PURPOSE OF REVIEW: The purpose of this review was to outline the mechanisms and to review recent literature on pulmonary arterial hypertension (PAH) medications in group 5 pulmonary hypertension (PH). RECENT FINDINGS: The first steps in management are to understand the mechanisms and hemodynamic profile and to exclude chronic thromboembolic disease. Recent studies in the past 5 years have found that PAH medications may improve hemodynamics in patients with pre-capillary pulmonary hypertension due to sarcoidosis, pulmonary Langerhans cell histiocytosis, lymphangioleiomyomatosis, and myeloproliferative disorders with dasatinib-induced PH...
October 18, 2017: Current Hypertension Reports
https://www.readbyqxmd.com/read/29029950/survival-of-idiopathic-pulmonary-arterial-hypertension-patients-in-the-modern-era-in-australia-and-new-zealand
#17
Geoff Strange, Edmund M Lau, Eleni Giannoulatou, Carolyn Corrigan, Eugene Kotlyar, Fiona Kermeen, Trevor Williams, David S Celermajer, Nathan Dwyer, Helen Whitford, Jeremy P Wrobel, John Feenstra, Melanie Lavender, Kenneth Whyte, Nicholas Collins, Peter Steele, Susanna Proudman, Vivek Thakkar, Dominic Keating, Anne Keogh
BACKGROUND: Epidemiology and treatment strategies continue to evolve in pulmonary arterial hypertension (PAH). We sought to define the characteristics and survival of patients with idiopathic, heritable and drug-induced PAH in the current management era. METHODS: Consecutive cases of idiopathic, heritable and drug-induced PAH were prospectively enrolled into an Australian and New Zealand Registry. RESULTS: Between January 2012 and December 2016, a total of 220 incident cases were enrolled (mean age 57...
September 20, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/29025748/compromised-cerebrovascular-regulation-and-cerebral-oxygenation-in-pulmonary-arterial-hypertension
#18
Simon Malenfant, Patrice Brassard, Myriam Paquette, Olivier Le Blanc, Audrey Chouinard, Valérie Nadeau, Philip D Allan, Yu-Chieh Tzeng, Sébastien Simard, Sébastien Bonnet, Steeve Provencher
BACKGROUND: Functional cerebrovascular regulatory mechanisms are important for maintaining constant cerebral blood flow and oxygen supply in heathy individuals and are altered in heart failure. We aim to examine whether pulmonary arterial hypertension (PAH) is associated with abnormal cerebrovascular regulation and lower cerebral oxygenation and their physiological and clinical consequences. METHODS AND RESULTS: Resting mean flow velocity in the middle cerebral artery mean flow velocity in the middle cerebral artery (MCAvmean); transcranial Doppler), cerebral pressure-flow relationship (assessed at rest and during squat-stand maneuvers; analyzed using transfer function analysis), cerebrovascular reactivity to CO2, and central chemoreflex were assessed in 11 patients with PAH and 11 matched healthy controls...
October 12, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29023250/biomechanical-determinants-of-right-ventricular-failure-in-pulmonary-hypertension
#19
Francesco Scardulla, Diego Bellavia, Patrizio Vitulo, Giuseppe Romano, Chiara Mina, Giovanni Gentile, Francesco Clemenza, Salvatore Pasta
Pulmonary hypertension (PH) is a disease characterized by progressive adverse remodeling of the distal pulmonary arteries, resulting in elevated pulmonary vascular resistance and load pressure on the right ventricle (RV), ultimately leading to RV failure. Invasive hemodynamic testing is the gold standard for diagnosing PH and guiding patient therapy. We hypothesized that lumped-parameter and biventricular finite-element (FE) modeling may lead to noninvasive predictions of both PH-related hemodynamic and biomechanical parameters that induce PH...
October 18, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/29022270/exercise-training-in-pulmonary-hypertension-and-right-heart-failure-insights-from-pre-clinical-studies
#20
Daniel Moreira-Gonçalves, Rita Ferreira-Nogueira, Mário Santos, Ana Filipa Silva, Rita Ferreira, Adelino Leite-Moreira, José Alberto Duarte, Tiago Henriques-Coelho
Exercise training (ExT) is widely used for the prevention and treatment of several chronic cardiovascular diseases. However, only recently it started to be recognized as safe and beneficial in pulmonary arterial hypertension. Despite the consistency of its favorable effects on exercise tolerance and quality of life, the mechanisms underlying these meaningful clinical improvements remain unclear. Current studies emphasize the exercise-induced changes on skeletal muscle but the impact of ExT at the level of the pulmonary circulation and right ventricle should not be overlooked...
2017: Advances in Experimental Medicine and Biology
keyword
keyword
46974
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"