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https://www.readbyqxmd.com/read/29036520/lung-specific-overexpression-of-constitutively-active-ikk2-induces-pulmonary-and-systemic-inflammations-but-not-hypothalamic-inflammation-and-glucose-intolerance
#1
Minjie Chen, Huifen Zhou, Yanyi Xu, Lianglin Qiu, Ziying Hu, Xiaobo Qin, Sufang Chen, Yuhao Zhang, Qi Cao, Yousef Abu-Amer, Zhekang Ying
The lung is constantly exposed to ambient pollutants such as ambient fine particulate matter (PM2.5), making it one of the most frequent locations of inflammation in the body. Given the establishment of crucial role of inflammation in the pathogenesis of cardiometabolic diseases, pulmonary inflammation is thus widely believed to be an important risk factor for cardiometabolic diseases. However, the causality between them has not yet been well established. To determine if pulmonary inflammation is sufficient to cause adverse cardiometabolic effects, SFTPC-rtTA+/-tetO-cre+/-pROSA-inhibitor κB kinase 2(IKK2)ca+/- (LungIKK2ca) and littermate SFTPC-rtTA+/-tetO-cre-/-pROSA-IKK2ca+/- wildtype (WT) mice were fed with doxycycline diet to induce constitutively active Ikk2 (Ikk2ca) overexpression in the lung and their pulmonary, systemic, adipose, and hypothalamic inflammations, vascular function, and glucose homeostasis were assessed...
July 28, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29035757/pulmonary-hypertension-associated-with-bronchopulmonary-dysplasia-in-preterm-infants
#2
REVIEW
Christine B Bui, Merrin A Pang, Arvind Sehgal, Christiane Theda, Jason C Lao, Philip J Berger, Marcel F Nold, Claudia A Nold-Petry
Bronchopulmonary dysplasia (BPD) and BPD-associated pulmonary hypertension (BPD-PH) are chronic inflammatory cardiopulmonary diseases with devastating short- and long-term consequences for infants born prematurely. The immature lungs of preterm infants are ill-prepared to achieve sufficient gas exchange, thus usually necessitating immediate commencement of respiratory support and oxygen supplementation. These therapies are life-saving, but they exacerbate the tissue damage that is inevitably inflicted on a preterm lung forced to perform gas exchange...
October 2, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/29034356/renal-denervation-reduces-pulmonary%C3%A2-vascular-remodeling-and-right-ventricular-diastolic-stiffness-in-experimental-pulmonary-hypertension
#3
Denielli da Silva Gonçalves Bos, Chris Happé, Ingrid Schalij, Wioletta Pijacka, Julian F R Paton, Christophe Guignabert, Ly Tu, Raphaël Thuillet, Harm-Jan Bogaard, Albert C van Rossum, Anton Vonk-Noordegraaf, Frances S de Man, M Louis Handoko
Neurohormonal overactivation plays an important role in pulmonary hypertension (PH). In this context, renal denervation, which aims to inhibit the neurohormonal systems, may be a promising adjunct therapy in PH. In this proof-of-concept study, we have demonstrated in 2 experimental models of PH that renal denervation delayed disease progression, reduced pulmonary vascular remodeling, lowered right ventricular afterload, and decreased right ventricular diastolic stiffness, most likely by suppression of the renin-angiotensin-aldosterone system...
February 2017: JACC. Basic to Translational Science
https://www.readbyqxmd.com/read/29034214/pathogenic-cd8-t-cells-cause-increased-levels-of-vegf-a-in-experimental-malaria-associated-acute-respiratory-distress-syndrome-but-therapeutic-vegfr-inhibition-is-not-effective
#4
Thao-Thy Pham, Melissa Verheijen, Leen Vandermosten, Katrien Deroost, Sofie Knoops, Kathleen Van den Eynde, Louis Boon, Chris J Janse, Ghislain Opdenakker, Philippe E Van den Steen
Malaria is a severe disease and kills over 400,000 people each year. Malarial complications are the main cause of death and include cerebral malaria and malaria-associated acute respiratory distress syndrome (MA-ARDS). Despite antimalarial treatment, lethality rates of MA-ARDS are still between 20 and 80%. Patients develop pulmonary edema with hemorrhages and leukocyte extravasation in the lungs. The vascular endothelial growth factor-A (VEGF-A) and the placental growth factor (PlGF) are vascular permeability factors and may be involved in the disruption of the alveolar-capillary membrane, leading to alveolar edema...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/29032404/dietary-supplementation-with-methylseleninic-acid-inhibits-mammary-tumorigenesis-and-metastasis-in-male-mmtv-pymt-mice
#5
Sneha Sundaram, Lin Yan
Male breast cancer, which makes up approximately 1% of all breast cancers, is an aggressive disease with poor prognosis. We investigated the effects of dietary supplementation with selenium in the form of methylseleninic acid [(MSeA) 2.5 mg selenium/kg] on mammary tumorigenesis in male MMTV-PyMT mice. The mammary tumor latency was 14.6 weeks for the MSeA-fed group and 13.8 weeks for the controls fed the AIN93G diet (p < 0.05). Dietary supplementation with MSeA, versus the control, resulted in a 72% reduction in tumor progression, a 46% reduction in both final volume and weight of mammary tumors, and a 70% reduction in the number of lung metastases...
October 14, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/29030339/muscle-%C3%AE-adrenergic-responsiveness-during-exercise-and-atp-induced-vasodilation-in-chronic-obstructive-pulmonary-disease-patients
#6
Ulrik Winning Iepsen, Gregers Druedal Wibe Munch, Camilla Koch Ryrsø, Niels H Secher, Peter Lange, Pia Thaning, Bente Klarlund Pedersen, Stefan P Mortensen
Sympathetic vasoconstriction is blunted in exercising muscle (functional sympatholysis) but becomes attenuated with age. We tested the hypothesis that functional sympatholysis is further impaired in chronic obstructive pulmonary disease (COPD) patients. We determined leg blood flow (LBF) and calculated leg vascular conductance (LVC) during 1) femoral-arterial Tyramine infusion (evokes endogenous norepinephrine release; 1 µmol min(-1) kg leg mass(-1)); 2) one-legged knee-extensor exercise with and without Tyramine infusion (10 W and 20% of maximal workload (WLmax)); 3) ATP (0...
October 13, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29030013/outcomes-of-patients-at-estimated-low-surgical-risk-undergoing-transcatheter-aortic-valve-implantation-with-balloon-expandable-prostheses
#7
Leire Unzué, Eulogio García, Rodrigo Teijeiro, Belén Díaz Antón, Miguel Rodríguez Del Río, Jorge Solís, Belen Rubio Alonso, Juan Medina, Francisco José Rodríguez Rodrigo, Francisco Javier Parra
INTRODUCTION AND OBJECTIVES: Transcatheter aortic-valve implantation (TAVI) is an accepted treatment for patients with severe aortic stenosis and high surgical risk. However, there is lack in data about TAVI in low-risk patients that are already being treated with this therapy in some clinical contexts. METHODS: A retrospective analysis of patients treated with transfemoral TAVI using Edwards Sapien prosthesis in one center was performed, classifying the patients into three groups according to the surgical risk (high/intermediate/low risk for STS score>8/4-8/<4)...
August 30, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/29029334/effect-of-long-term-hydroxychloroquine-on-vascular-events-in-patients-with-systemic-lupus-erythematosus-a-database-prospective-cohort-study
#8
Chung-Yuan Hsu, Yu-Sheng Lin, Yu-Jih Su, Hsing-Fen Lin, Ming-Shyan Lin, Ya-Jhu Syu, Tien-Tsai Cheng, Shan-Fu Yu, Jia-Feng Chen, Tien-Hsing Chen
Objectives: The incidence of thromboembolism in patients with SLE is higher than that in the general population. HCQ, widely used to treat lupus, may have vascular protective effects. The aim of this study was to determine whether long-term HCQ exposure is associated with decreased thromboembolism risk in SLE. Methods: We designed a prospective cohort study within an SLE population based on the National Health Insurance Research Database in Taiwan. We divided participants into HCQ and control groups according to HCQ prescription during the first year...
September 27, 2017: Rheumatology
https://www.readbyqxmd.com/read/29028771/mechanisms-of-thrombocytopenia-during-septic-shock-a-multiplex-cluster-analysis-of-endogenous-sepsis-mediators
#9
Alexandre Bedet, Keyvan Razazi, Florence Boissier, Mathieu Surenaud, Sophie Hue, Stéphane Giraudier, Christian Brun-Buisson, Armand Mekontso Dessap
BACKGROUND: Thrombocytopenia is a common feature of sepsis and may involve various mechanisms often related to the inflammatory response. This study aimed at evaluating factors associated with thrombocytopenia during human septic shock. In particular, we used a multiplex analysis to assess the role of endogenous sepsis mediators. METHODS: Prospective, observational study. Thrombocytopenia was defined as an absolute platelet count <100 G/L or a 50% relative decrease in platelet count during the first week of septic shock...
October 12, 2017: Shock
https://www.readbyqxmd.com/read/29025575/biomarkers-in-pulmonary-vascular-disease-gauging-response-to-therapy
#10
Timothy J McMahon, Nathan S Bryan
Biomarkers are increasingly being investigated in the treatment of pulmonary vascular disease. In particular, the signaling pathways targeted by therapies for pulmonary arterial hypertension provide biomarkers that potentially can be used to guide therapy and to assess clinical response as an alternative to invasive procedures such as right-sided cardiac catheterization. Moreover, the growing use of combination therapy for both the initial and subsequent treatment of pulmonary arterial hypertension highlights the need for biomarkers in this treatment approach...
October 15, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/29025573/the-nitric-oxide-pathway-in-pulmonary-vascular-disease
#11
James R Klinger, Philip J Kadowitz
Nitric oxide is an endogenous pulmonary vasodilator that is synthesized from L-arginine in pulmonary vascular endothelial cells by nitric oxide synthase and diffuses to adjacent vascular smooth muscle cells where it activates soluble guanylyl cyclase. This enzyme converts GTP to cGMP which activates cGMP dependent protein kinase leading to a series of events that decrease intracellular calcium and reduce vascular muscle tone. Nitric oxide is an important mediator of pulmonary vascular tone and vascular remodeling...
October 15, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/29024719/calcification-or-not-this-is-the-question-a-one-year-study-of-bovine-pericardial-vascular-patches-cardiocel%C3%A2-in-minipigs
#12
Aida Salameh, Wiebke Greimann, David Vondrys, Martin Kostelka
Objectives A main problem with bioprosthesis used for surgical correction of congenital cardiac malformation is their tendency to shrink and to calcify. Recently, a new material i.e. de-cellularised bovine pericardium (CardioCel(®)) was introduced in clinics. It was proposed that this new patch material should not calcify and should be particularly suitable for the correction of vascular defects in inborn cardiac diseases. The aim of our chronic minipig study was to evaluate the performance of CardioCel(®) patches implanted in aortic and pulmonary artery position, respectively...
October 9, 2017: Seminars in Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29023250/biomechanical-determinants-of-right-ventricular-failure-in-pulmonary-hypertension
#13
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 11, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/29021642/bevacizumab-as-a-treatment-for-hereditary-hemorrhagic-telangiectasia-in-children-a-case-report
#14
Fabio E Ospina, Alex Echeverri, Iván Posso-Osorio, Lina Jaimes, Jaiber Gutierrez, Gabriel J Tobón
CASE DESCRIPTION: Five-year-old female patient with hereditary hemorrhagic telangiectasia. CLINICAL FINDINGS: Deterioration of cardiopulmonary function with higher oxygen requirements secondary to pulmonary arteriovenous shunts, epistaxis. TREATMENT AND OUTCOME: The patient was treated with the monoclonal antibody bevacizumab, which inhibits the vascular endothelial growth factor, with good clinical outcome. CLINICAL RELEVANCE: Hereditary hemorrhagic telangiectasia is an autosomal dominant disorder characterized by arteriovenous malformations in different organs, making its clinical presentations varied...
June 30, 2017: Colombia Médica: CM
https://www.readbyqxmd.com/read/29016730/microrna-424-322-as-a-new-marker-of-disease-progression-in-pulmonary-arterial-hypertension-and-its-role-in-right-ventricular-hypertrophy-by-targeting-smurf1
#15
Rui Baptista, Carla Marques, Steve Catarino, Francisco J Enguita, Marina C Costa, Paulo Matafome, Mónica Zuzarte, Graça Castro, Abílio Reis, Pedro Monteiro, Mariano Pêgo, Paulo Pereira, Henrique Girão
MicroRNAs (miRNAs) have been implicated in the pathogenesis of pulmonary hypertension (PH), a multifactorial and progressive condition associated with an increased afterload of the right ventricle leading to heart failure and death. The main aim of this study was to correlate the levels of miR-424(322) with the severity and prognosis of PH and with right ventricle hypertrophy progression. Additionally, we intended to evaluate the mechanisms and signaling pathways whereby miR-424(322) secreted by pulmonary endothelial cells (PAECs) impacts cardiomyocytes...
September 12, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28994016/cardiopulmonary-manifestations-of-collagen-vascular-diseases
#16
REVIEW
Hamza Jawad, Sebastian R McWilliams, Sanjeev Bhalla
PURPOSE OF REVIEW: The study aimed to illustrate the cardiopulmonary findings of the following collagen vascular diseases on cross-sectional imaging: rheumatoid arthritis, scleroderma (progressive systemic sclerosis), systemic lupus erythematosus, the inflammatory myopathies (polymyositis/dermatomyositis), and Sjögren's syndrome. RECENT FINDINGS: Although collagen vascular diseases can affect any part of the body, interstitial lung disease and pulmonary hypertension are the two most important cardiopulmonary complications and are responsible for the majority of morbidity and mortality in this patient population...
October 9, 2017: Current Rheumatology Reports
https://www.readbyqxmd.com/read/28993547/development-of-novel-therapies-for-cardiovascular-diseases-by-clinical-application-of-basic-research
#17
Kimio Satoh
Cyclophilin A (CyPA) is secreted from vascular smooth muscle cells, inflammatory cells, activated platelets, and cardiac fibroblasts in response to oxidative stress. Excessive and continuous activation of the RhoA/Rho-kinase system promotes the secretion of CyPA, resulting in the development of multiple cardiovascular diseases. Basigin (Bsg), a transmembrane glycoprotein that activates matrix metalloproteinases, is an extracellular receptor for CyPA that promotes cell proliferation and inflammation. Thus, the CyPA/Bsg system is potentially a novel therapeutic target for cardiovascular diseases...
October 6, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28991650/pulmonary-vascular-diseases-in-the-elderly
#18
REVIEW
Hooman Poor
Pulmonary hypertension is a pathologic hemodynamic condition defined by a mean pulmonary arterial pressure of 25 mm Hg or greater at rest. Because of age-associated stiffening of the heart and the pulmonary vasculature and the higher prevalence in the elderly of comorbidities associated with the development of pulmonary hypertension, it is an increasingly common finding in this patient population. A right heart catheterization is necessary for the diagnosis and characterization of pulmonary hypertension. The general management is to treat the underlying conditions responsible for the development of the disorder...
November 2017: Clinics in Geriatric Medicine
https://www.readbyqxmd.com/read/28990213/the-complex-relationship-among-arteriovenous-access-heart-and-circulation
#19
EDITORIAL
Carlo Basile, Carlo Lomonte
There are currently near 400 000 patients on hemodialysis in the United States. More than 50% of those treated by chronic hemodialysis die because of a cardiovascular (CV) event. The majority of these patients have functional arteriovenous fistulas (AVFs). AVFs have an adverse effect on cardiac function, but their exact contribution to CV morbidity is not clear. It has long been known that a vascular access with an inappropriately high-flow rate may cause high-output heart failure. Paradoxically, there may be hemodynamic and cardiopulmonary benefits conferred by AVF particularly in severe chronic obstructive pulmonary disease...
October 9, 2017: Seminars in Dialysis
https://www.readbyqxmd.com/read/28988309/durable-benefit-of-particle-occlusion-of-systemic-to-pulmonary-collaterals-in-select-patients-after-superior-cavopulmonary-connection
#20
Michael L O'Byrne, David N Schidlow
Systemic to pulmonary arterial collaterals (SPC) are commonly found in patients undergoing staged operative palliation for single ventricle heart disease. Occlusion of SPC as part of pre-Fontan catheterization has been shown to improve hemodynamics acutely. Anecdotally, the effect of this intervention appears to be transient, and to our knowledge there is no data supporting its durability in these patients. Between 1/1/2016 and 5/1/2017, 24 children underwent Glenn operations at our institution. Of these, 3 patients had signs and symptoms deteriorating clinical status suggestive of volume overload in the period between their Glenn operation and Fontan completion, prompting heart catheterization...
October 7, 2017: Pediatric Cardiology
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