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https://www.readbyqxmd.com/read/29679363/proangiogenic-and-profibrotic-markers-in-pulmonary-sarcoidosis
#1
I Tuleta, L Biener, C Pizarro, G Nickenig, D Skowasch
The aim of our study was to determine the blood levels of vascular endothelial growth factor (VEGF), transforming growth factor (TGF)-β1, fibroblast growth factor (FGF)-2, and platelet-derived growth factor (PDGF)-AB in different stages of pulmonary sarcoidosis. There were 92 patients in sarcoidosis stages I + II, III, and IV enrolled into the study. All the patients underwent lung diffusing capacity and blood sampling. We found that VEGF levels differed significantly between the stage groups with the peak VEGF concentrations in stage III...
April 21, 2018: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29676644/air-pollution-exposure-with-fine-dust-responses-in-the-pulmonary-vasculature-and-the-right-heart
#2
Nedim Durmus, Gabriele Grunig
Detrimental effects of air pollution with fine dust (particulate matter ≤2.5 μm in aerodynamic diameter, or PM2.5 ) on the systemic circulation and the left heart have been studied intensely during the past decade. In comparison, knowledge regarding the effects of exposure to air pollution with PM2.5 on the pulmonary vasculature and the right heart lags far behind. A report on severe lung disease and right heart failure in coal miners was published nearly 170 years ago. However, today, we still do not have a clear picture of how the effect of air pollution on the pulmonary circulation or the right heart should be viewed from a clinical, mechanistic biological, therapeutic, or economic angle...
April 2018: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/29676635/effects-of-household-air-pollution-in-malawi-and-human-immunodeficiency-virus-status-on-respiratory-symptoms-and-inflammation-injury-and-repair-markers
#3
Charles Kim, Hannah Jary, Kevin Mortimer, Kelly S Schweitzer, Doug Curran-Everett, Stephen Gordon, Irina Petrache
RATIONALE: Household air pollution (HAP) and human immunodeficiency virus (HIV) are associated with increased risk for chronic obstructive pulmonary disease. Both HAP and HIV are widespread in Sub-Saharan Africa, including Malawi, where HIV has 10.6% prevalence in patients 15-49 years old. OBJECTIVES: We hypothesized that HIV infection (HIV+ ) and habitual exposure to HAP (HAP+ ) synergize to cause systemic inflammation and vascular injury, which may herald early onset of chronic respiratory diseases...
April 2018: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/29673911/targeting-the-rhoa-rock-pathway-to-regulate-t-cell-homeostasis-in-hypoxia-induced-pulmonary-arterial-hypertension
#4
Cheng Li, Ping-Ping Liu, Dou-Dou Tang, Rong Song, Yi-Qing Zhang, Si Lei, Shang-Jie Wu
BACKGROUND: Hypoxic pulmonary arterial hypertension (PAH) is a crippling disease with limited therapeutic methods. The imbalance of T helper 17 cell (Th17)/regulatory T cell (Treg) plays an important role in the development of Hypoxic PAH. However, whether targeting the ras homolog family member A-Rho kinase (RhoA-ROCK) pathway (activation and inhibition) by lysophosphatidic acid (LPA) and fasudil (FSD) regulate T-cell homeostasis in Hypoxic PAH remain unknown. OBJECTIVE: To examine the effects of LPA and FSD on hypoxic pulmonary vascular remodeling and homeostasis of Th17/Treg cells in Hypoxic PAH...
April 16, 2018: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29672122/pruning-of-the-pulmonary-vasculature-in-asthma-the-sarp-cohort
#5
Samuel Y Ash, Farbod N Rahaghi, Carolyn E Come, James C Ross, Alysha G Colon, Juan Carlos Cardet-Guisasola, Eleanor M Dunican, Eugene R Bleecker, Mario Castro, John V Fahy, Sean B Fain, Benjamin M Gaston, Eric A Hoffman, Nizar N Jarjour, David T Mauger, Sally E Wenzel, Bruce D Levy, Raul San Jose Estepar, Elliot Israel, George R Washko
RATIONALE: Loss of the peripheral pulmonary vasculature, termed vascular pruning, is associated with disease severity in patients with chronic obstructive pulmonary disease. OBJECTIVES: To determine if pulmonary vascular pruning is associated with asthma severity and exacerbations. METHODS: We measured the total pulmonary blood vessel volume (TBV) and the blood vessel volume of vessels less than 5mm2 in cross sectional area (BV5) and of vessels less than 10mm2 (BV10) in cross sectional area on non-contrast computed tomographic scans of participants from the Severe Asthma Research Program...
April 19, 2018: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/29666296/phase-ii-study-to-evaluate-the-efficacy-and-safety-of-rilotumumab-and-bevacizumab-in-subjects-with-recurrent-malignant-glioma
#6
Mary Lou Affronti, Jennifer Gamboa Jackman, Frances McSherry, James E Herndon, Elwood C Massey, Eric Lipp, Annick Desjardins, Henry S Friedman, Gordana Vlahovic, James Vredenburgh, Katherine B Peters
LESSONS LEARNED: Due to evolving imaging criteria in brain tumors and variation in magnetic resonance imaging evaluation, it is not ideal to use response rate as a primary objective. Future studies involving antiangiogenic agents should use overall survival.Disease-expected toxicities should be considered when defining the clinical significance of an adverse event. For example, vascular thromboembolic events are common in brain tumor patients and should not be attributed to the study drug in the safety analysis...
April 17, 2018: Oncologist
https://www.readbyqxmd.com/read/29665366/3-7-bis-2-hydroxyethyl-icaritin-a-potent-inhibitor-of-phosphodiesterase-5-prevents-monocrotaline-induced-pulmonary-arterial-hypertension-via-no-cgmp-activation-in-rats
#7
Tao-Hua Lan, Xiao-Ling Chen, Yun-Shan Wu, Hui-Liang Qiu, Jun-Zhe Li, Xin-Min Ruan, Dan-Ping Xu, Dong-Qun Lin
Pulmonary arterial hypertension (PAH) is a chronic progressive disease which leads to elevated pulmonary arterial pressure and right heart failure. 3,7-Bis(2-hydroxyethyl)icaritin (ICT), an icariin derivatives, was reported to have potent inhibitory activity on phosphodiesterase type 5 (PDE5) which plays a crucial role in the pathogenesis of PAH. The present study was designed to investigate the effects of ICT on monocrotaline (MCT)-induced PAH rat model and reveal the underlying mechanism. MCT-induced PAH rat models were established with intragastric administration of ICT (10, 20, 40mg/kg/d), Icariin (ICA) (40mg/kg/d) and Sildenafil (25mg/kg/d)...
April 14, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29663962/tuberculous-lymphadenitis-is-associated-with-altered-levels-of-circulating-angiogenic-factors
#8
G R Kathamuthu, K Moideen, D Baskaran, G Sekar, S Rathinam, V J Bharathi, G R Ganeshan, S Babu
BACKGROUND: Angiogenic factors are important in granuloma formation and serve as biomarkers in pulmonary tuberculosis (PTB). The relationship between these markers and tuberculous lymphadenitis (TBL) is not known. OBJECTIVE AND DESIGN: To examine the association of vascular endothelial growth factor (VEGF) and angiopoietin (Ang) family molecules in TBL, we measured systemic levels of VEGF-A, C, D, R1 (VEGF-receptor 1), R2, R3, Ang-1, Ang-2 and TIE2 (tyrosine kinase with immunoglobulin-like and epidermal growth factor-like domains 2) levels in TBL, latent tuberculous infection (LTBI) and lymph node culture supernatants (VEGF-A, C and Ang-2) of the same TBL patients...
May 1, 2018: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/29660515/aspergillus-fumigatus-viability-drives-allergic-responses-to-inhaled-conidia
#9
Ajay P Nayak, Tara L Croston, Angela R Lemons, W T Goldsmith, Nikki B Marshall, Michael L Kashon, Dori R Germolec, Donald H Beezhold, Brett J Green
BACKGROUND: Aspergillus fumigatus induced allergic airway disease has been shown to involve conidial germination in vivo but the immunological mechanisms remain uncharacterized. OBJECTIVE: A subchronic murine exposure model was used to examine the immunological mediators that are regulated in response to either culturable or non-culturable A. fumigatus conidia. METHODS: Female B6C3F1/N mice were repeatedly dosed via inhalation with 1 x 105 viable or heat inactivated conidia (HIC), twice a week for 13 weeks (26 exposures)...
April 13, 2018: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/29658202/physical-training-in-a-medical-fitness-room-for-patients-with-chronic-diseases-functional-and-metabolic-outcomes
#10
Oshrat E Tayer-Shifman, Yigal Bar-On, David Pereg, Alon Y Hershko
BACKGROUND: Physical inactivity is a pivotal factor in the development and progression of various chronic diseases. However, most fitness facilities exclude unhealthy individuals. Therefore, an exercise program that admits such patients is imperative. OBJECTIVES: To evaluate the effectiveness of a fitness facility that admits adult subjects with multiple chronic diseases. METHODS: We conducted a retrospective screening of patient records from the Medical Fitness Facility at Meir Medical Center, Israel...
January 2018: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/29655845/cardiac-telocytes-from-basic-science-to-cardiac-diseases-i-atrial-fibrillation
#11
REVIEW
Sorin Hostiuc, Ionuț Negoi, Catalin Dogaroiu, Eduard Drima, Cristian Bogdan Iancu
INTRODUCTION: Atrial fibrillation (AF) is nowadays considered to be one of the most important causes of heart failure, stroke, cognitive decline, vascular dementia, sudden death and overall cardiovascular morbidity. Recently were published a few articles suggesting a possible involvement of telocytes in the development of atrial fibrillation. The purpose of this article is to analyze the results obtained in the field systematically, and to see if there is enough data to support a possible involvement of telocytes in arrhythmogenesis...
April 12, 2018: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/29653363/trapidil-improves-hemodynamic-echocardiographic-and-redox-state-parameters-of-right-ventricle-in-monocrotaline-induced-pulmonary-arterial-hypertension-model
#12
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/29653080/surgical-treatment-of-native-and-prosthetic-aortic-infection-with-xenopericardial-tube-grafts
#13
Maximilian Kreibich, Matthias Siepe, Julia Morlock, Friedhelm Beyersdorf, Stoyan Kondov, Johannes Scheumann, Fabian A Kari, Tim Berger, Holger Schröfel, Bartosz Rylski, Martin Czerny
BACKGROUND: To report our results of surgical treatment of native and prosthetic aortic infection with xenopericardial tube-grafts from the ascending aorta to beyond the bifurcation. METHODS: Within a 28-month period, 20 patients were treated with a bovine self-made pericardial tube graft to replace infected vascular grafts (after conventional surgical aortic replacement or endovascular stentgraft implantation) or to treat a contaminated surgical site. An integrated standardized therapeutic concept was applied in all patients consisting of complete removal of the infected prosthetic material, extensive debridement, and orthotopic vascular reconstruction with self-made tube grafts constructed from a bovine pericardial patch...
April 10, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29652749/sera-from-children-after-cardiopulmonary-bypass-reduces-permeability-of-capillary-endothelial-cell-barriers
#14
Richard W Pierce, Riad Abou Zahr, Sarah Kandil, E Vincent S Faustino, Jordan S Pober
OBJECTIVES: Children undergoing cardiopulmonary bypass develop clinically impactful capillary leak of unclear etiology. A widely held hypothesis that exposure of circulating cells to the cardiopulmonary bypass circuit induces the release of inflammatory mediators that act to disrupt intercellular junctions of capillary endothelial cells inducing paracellular capillary leak either directly or through new gene expression. DESIGN: Cohort study. SETTING: Tertiary pediatric hospital...
April 12, 2018: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/29651255/sex-specific-skeletal-muscle-fatigability-and-decreased-mitochondrial-oxidative-capacity-in-adult-rats-exposed-to-postnatal-hyperoxia
#15
Laura H Tetri, Gary M Diffee, Gregory P Barton, Rudolf K Braun, Hannah E Yoder, Kristin Haraldsdottir, Marlowe W Eldridge, Kara N Goss
Premature birth affects more than 10% of live births, and is characterized by relative hyperoxia exposure in an immature host. Long-term consequences of preterm birth include decreased aerobic capacity, decreased muscular strength and endurance, and increased prevalence of metabolic diseases such as type 2 diabetes mellitus. Postnatal hyperoxia exposure in rodents is a well-established model of chronic lung disease of prematurity, and also recapitulates the pulmonary vascular, cardiovascular, and renal phenotype of premature birth...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29649237/bronchoalveolar-lavage-bal-cells-in-idiopathic-pulmonary-fibrosis-express-a-complex-pro-inflammatory-pro-repair-angiogenic-activation-pattern-likely-associated-with-macrophage-iron-accumulation
#16
Jungnam Lee, Ivan Arisi, Ermanno Puxeddu, Lazarus K Mramba, Massimo Amicosante, Carmen M Swaisgood, Marco Pallante, Mark L Brantly, C Magnus Sköld, Cesare Saltini
Idiopathic pulmonary fibrosis (IPF) is a chronic lung disease of unknown cause characterized by alveolar epithelial damage, patchy interstitial fibrosis and diffuse microvascular abnormalities. In IPF, alveolar clustering of iron-laden alveolar macrophages-a common sign of microhemorrhage, has been associated with vascular abnormalities and worsening of pulmonary hypertension. As iron-dependent ROS generation has been shown to induce unrestrained macrophage activation in disease models of vascular damage, we explored alveolar macrophage activation phenotype in IPF patients (n = 16) and healthy controls (CTR, n = 7) by RNA sequencing of bronchoalveolar lavage (BAL) cells...
2018: PloS One
https://www.readbyqxmd.com/read/29644892/recent-developments-in-3d-reconstruction-and-stereology-to-study-the-pulmonary-vasculature
#17
Christian Mühlfeld, Christoph Wrede, Lars Knudsen, Tobias Buchacker, Matthias Ochs, Roman Grothausmann
Alterations of the pulmonary vasculature are an important feature of human lung diseases such as chronic obstructive pulmonary disease, pulmonary hypertension and bronchopulmonary dysplasia. Experimental studies to investigate the pathogenesis or a therapeutic intervention in animal models of these diseases often require robust, meaningful and efficient morphometric data that allow for appropriate statistical testing. The gold standard for obtaining such data is design-based stereology. However, certain morphological characteristics of the pulmonary vasculature make the implementation of stereological methods challenging...
April 12, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29644226/nitric-oxide-and-pulmonary-arterial-hypertension
#18
REVIEW
Adrian H Chester, Magdi H Yacoub, Salvador Moncada
The pathogenesis of pulmonary arterial hypertension remains undefined. Changes in the expression and effects mediated by a number of vasoactive factors have been implicated to play a role in the onset and progression of the disease. The source of many of these mediators, such as nitric oxide (NO), prostacyclin and endothelin-1 (ET-1), is the pulmonary endothelium. This article focus in the role of nitric oxide in PAH, reviewing the evidence for its involvement in regulation of pulmonary a vascular tone under physiological conditions, the mechanisms by which it can contribute to the pathological changes seen in PAH and strategies for the use of NO as a therapy for treatment of the disease...
June 30, 2017: Global Cardiology Science & Practice
https://www.readbyqxmd.com/read/29643065/pulmonary-effective-arterial-elastance-as-a-measure-of-right-ventricular-afterload-and-its-prognostic-value-in-pulmonary-hypertension-due-to-left-heart-disease
#19
Emmanouil Tampakakis, Sanjiv J Shah, Barry A Borlaug, Peter J Leary, Harnish H Patel, Wayne L Miller, Benjamin W Kelemen, Brian A Houston, Todd M Kolb, Rachel Damico, Stephen C Mathai, Edward K Kasper, Paul M Hassoun, David A Kass, Ryan J Tedford
BACKGROUND: Patients with combined post- and precapillary pulmonary hypertension due to left heart disease have a worse prognosis compared with isolated postcapillary. However, it remains unclear whether increased mortality in combined post- and precapillary pulmonary hypertension is simply a result of higher total right ventricular load. Pulmonary effective arterial elastance (Ea) is a measure of total right ventricular afterload, reflecting both resistive and pulsatile components. We aimed to test whether pulmonary Ea discriminates survivors from nonsurvivors in patients with pulmonary hypertension due to left heart disease and if it does so better than other hemodynamic parameters associated with combined post- and precapillary pulmonary hypertension...
April 2018: Circulation. Heart Failure
https://www.readbyqxmd.com/read/29642696/periprocedural-and-perioperatory-management-of-patients-with-tricuspid-valve-disease
#20
Fabrizio Monaco, Ambra L DI Prima, Monica DE Luca, Gaia Barucco, Alberto Zangrillo
Tricuspid regurgitation (TR) is a common valvular lesion which may affect morbidity and mortality. It can be related to an intrinsic abnormality of the tricuspid valve leaflets (organic) or secondary to annular dilatation (functional). Often organic and functional TR coexist in the same patient. A long standing TR is associated with ascites, congestive hepatopathy, peripheral edema, renal failure, and abdominal fullness which significantly affect the outcome. In particular, the perioperative course may be complicated due to both the presence of comorbidities and the development of a severe postoperative right ventricle (RV) dysfunction...
April 11, 2018: Minerva Cardioangiologica
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