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https://www.readbyqxmd.com/read/28717556/thorax-computed-tomography-findings-in-patients-with-erectile-dysfunction
#1
Mustafa Resorlu, Muhammet Arslan, Ozan Karatag, Gurhan Adam
OBJECTIVE: Diabetes mellitus, smoking, dyslipidemia, and obesity play an important role in the etiology of erectile dysfunction, particularly in cases with vascular insufficiency. These risk factors also target the lungs due to their systemic effects. MATERIALS AND METHODS: Patients with penile vascular insufficiency determined at Doppler ultrasonography and undergoing thoracic computerized tomography for various reasons were included in this study. A history of acute thoracic trauma, pneumonic consolidation, or pelvic surgery and trauma were regarded as exclusion criteria...
2017: Journal of Clinical Imaging Science
https://www.readbyqxmd.com/read/28713578/retrospective-evaluation-of-pimobendan-and-sildenafil-therapy-for-severe-pulmonary-hypertension-due-to-lung-disease-and-hypoxia-in-28-dogs-2007-2013
#2
Lisa A Murphy, Nicholas Russell, Domenico Bianco, Reid K Nakamura
Pulmonary hypertension (PH) is the persistent abnormal increase in pulmonary artery (PA) pressure and in dogs is usually secondary to congenital disease causing pulmonary over circulation, chronic respiratory disease and elevated left atrial pressure. Sildenafil (SF) is a phosphodiesterase (PDE) V inhibitor that causes pulmonary artery (PA) vasodilation by increasing pulmonary vascular concentrations of cyclic guanosine monophosphate which subsequently increases the activity of endogenous nitric oxide. Pimobendan (PB) is a PDE III inhibitor with calcium sensitizing effects thereby exerting positive inotropy and vasodilation...
May 2017: Veterinary Medicine and Science
https://www.readbyqxmd.com/read/28712694/imaging-pearls-of-pediatric-beh%C3%A3-et-s-disease
#3
REVIEW
Osman Melih Topcuoglu, Elif Dilara Topcuoglu, Cetin Murat Altay, Sinan Genc
OBJECTIVE: To emphasize the diverse diagnostic imaging findings of pediatric Behçet's disease and to define the fundamental imaging clues for pulmonary, vascular, gastrointestinal and central nervous system involvements of Behçet's disease in pediatric age group. We also aim to list the major imaging differences of Behçet's disease in childhood and adulthood. CONCLUSION: The diagnosis of pediatric Behçet's disease is challenging. Imaging can narrow the differential diagnosis by using some substantial clues and prevent diagnostic delays...
June 28, 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28705939/changes-in-pulmonary-exercise-haemodynamics-in-scleroderma-a-4-year-prospective-study
#4
Gabor Kovacs, Alexander Avian, Nora Wutte, Franz Hafner, Florentine Moazedi-Fürst, Sonja Kielhauser, Elisabeth Aberer, Marianne Brodmann, Winfried Graninger, Vasile Foris, Andrea Olschewski, Horst Olschewski
Pulmonary arterial hypertension (PAH) is a feared complication of systemic sclerosis. In this prospective cohort study, we monitored the changes in resting and exercise pulmonary haemodynamics of scleroderma patients without initial PAH over a mean follow-up period of ∼4 years.All patients underwent exercise echocardiography and cardiopulmonary exercise testing at baseline and follow-up. A subgroup underwent exercise right heart catheter (RHC) investigations. The primary end-point was the echocardiographic systolic pulmonary arterial pressure at 50 W exercise (sPAP50)...
July 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28705908/importance-of-kynurenine-in-pulmonary-hypertension
#5
Bence M Nagy, Chandran Nagaraj, Andreas Meinitzer, Neha Sharma, Rita Papp, Vasile Foris, Bahil Ghanim, Grazyna Kwapiszewska, Gabor Kovacs, Walter Klepetko, Thomas R Pieber, Harald Mangge, Horst Olschewski, Andrea Oslchewski
The tryptophan metabolite kynurenine is significantly increased in pulmonary arterial hyper-tension (PAH) patients, and it is a potent vasodilator of systemic arteries. Our aim was to in-vestigate the role of kynurenine in the pulmonary circulation. Serum tryptophan, kynurenine and kynurenic-acid levels were measured in 20 idiopathic PAH (IPAH) patients, 20 healthy controls and 20 patients with chronic lung disease or meta-bolic syndrome without-PH. Laser-dissected pulmonary arteries from IPAH and control lungs were tested for the expression of IDO, the rate-limiting enzyme for the conversion from tryptophan to kynurenine...
July 13, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28704913/treatment-of-connective-tissue-disease-associated-interstitial-lung-disease-the-pulmonologist-s-point-of-view
#6
REVIEW
So-My Koo, Soo-Taek Uh
Interstitial lung disease (ILD) occurs in 15% of patients with collagen vascular disease (CVD), referred to as connective tissue disease (CTD). Despite advances in management strategies, ILD continues to be a significant cause of mortality in patients with CVD-associated ILD (CTD-ILD). There is a lack of randomized, clinical trials assessing pharmacological agents for CTD-ILD, except in cases of ILD-associated systemic sclerosis (SSc). This may be due to the lack of CTD cases available, the difficulty of histological confirmation of ILD, and the various types of CTD and ILD...
July 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/28702341/severe-dyspnea-in-a-patient-with-neurofibromatosis-type-1
#7
P B Poble, J C Dalphin, B Degano
Neurofibromatosis type 1 (NF1) is a genetic disease in which pulmonary complications are rare, but severe, especially pulmonary hypertension (PH). The mechanisms underlying the onset of PH in patients with NF1 are unclear and might be multifactorial. In particular, the frequent presence of pulmonary parenchymal lesions makes etiological diagnosis of PH difficult. We describe here the case of a patient with NF1 admitted to our clinic with dyspnea and right heart failure revealing severe pre-capillary PH. Parenchymal lesions were mild and PH was attributed to pulmonary vascular involvement...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28701597/randomized-comparative-study-of-intravenous-infusion-of-three-different-fixed-doses-of-milrinone-in-pediatric-patients-with-pulmonary-hypertension-undergoing-open-heart-surgery
#8
Neeraj Kumar Barnwal, Sanjeeta Rajendra Umbarkar, Manjula Sudeep Sarkar, Raylene J Dias
BACKGROUND: Pulmonary hypertension secondary to congenital heart disease is a common problem in pediatric patients presenting for open heart surgery. Milrinone has been shown to reduce pulmonary vascular resistance and pulmonary artery pressure in pediatric patients and neonates postcardiac surgery. We aimed to evaluate the postoperative outcome in such patients with three different fixed maintenance doses of milrinone. METHODOLOGY: Patients were randomized into three groups...
July 2017: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/28701355/mir-4632-mediates-pdgfbb-induced-proliferation-and-anti-apoptosis-of-human-pulmonary-artery-smooth-muscle-cells-via-targeting-cjun
#9
Zhengjiang Qian, Yanjiao Li, Jidong Chen, Xiang Li, Deming Gou
MicroRNAs (miRNAs) can regulate proliferative status of pulmonary artery smooth muscle cells (PASMCs), which is a core factor modulating pulmonary vascular remodeling diseases, such as atherosclerosis and pulmonary arterial hypertension (PAH). Our previous work has shown that miR-4632, a rarely reported miRNA, is significantly downregulated in Platelet-Derived Growth Factor (PDGF)BB-stimulated human pulmonary artery smooth muscle cells (HPASMCs), yet its cell function and the underlying molecular mechanisms remain to be elucidated...
July 12, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/28697774/the-impact-of-dpp-4-inhibitors-on-long-term-survival-among-diabetic-patients-after-first-acute-myocardial-infarction
#10
Mei-Tzu Wang, Sheng-Che Lin, Pei-Ling Tang, Wang-Ting Hung, Chin-Chang Cheng, Jin-Shiou Yang, Hong-Tai Chang, Chun-Peng Liu, Guang-Yuan Mar, Wei-Chun Huang
BACKGROUND: Previous studies regarding the cardioprotective effects of dipeptidyl peptidase 4 (DPP-4) inhibitors have not provided sufficient evidence of a relationship between DPP-4 inhibition and actual cardiovascular outcomes. This study aimed to evaluate the impact of DPP-4 inhibitors on the survival of diabetic patients after first acute myocardial infarction (AMI). METHODS: This was a nationwide, propensity score-matched, case-control study of 186,112 first AMI patients, 72,924 of whom had diabetes...
July 11, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28694109/mathematical-modelling-of-the-maternal-cardiovascular-system-in-the-three-stages-of-pregnancy
#11
Chiara Corsini, Elena Cervi, Francesco Migliavacca, Silvia Schievano, Tain-Yen Hsia, Giancarlo Pennati
In this study, a mathematical model of the female circulation during pregnancy is presented in order to investigate the hemodynamic response to the cardiovascular changes associated with each trimester of pregnancy. First, a preliminary lumped parameter model of the circulation of a non-pregnant female was developed, including the heart, the systemic circulation with a specific block for the uterine district and the pulmonary circulation. The model was first tested at rest; then heart rate and vascular resistances were individually varied to verify the correct response to parameter alterations characterising pregnancy...
July 7, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28693343/the-potential-role-of-endothelial-dysfunction-and-platelet-activation-in-the-development-of-thrombotic-risk-in-copd-patients
#12
Mario Malerba, Matteo Nardin, Alessandro Radaeli, Paolo Montuschi, Giovanna E Carpagnano, Enrico Clini
Despite lack of knowledge in the field, several studies have underlined the role of endothelium dysfunction and platelet activation as significant players in the development and progression of chronic obstructive pulmonary disease (COPD). Indeed, endothelium plays a crucial role in vascular homeostasis and impairment, due to the inflammation process enhanced by smoking. Chronic inflammation and endothelial dysfunction have been proved to drive platelet activity. Consequently, thrombotic risk is enhanced in COPD, and might explain the higher percentage of cardiovascular death in such patients...
July 12, 2017: Expert Review of Hematology
https://www.readbyqxmd.com/read/28689950/an-accumulated-deficits-model-predicts-perioperative-and-long-term-adverse-events-after-carotid-endarterectomy
#13
Natalie D Sridharan, Rabih A Chaer, Bryan Boyuan Wu, Mohammad H Eslami, Michel S Makaroun, Efthymios D Avgerinos
OBJECTIVE: There is increasing recognition that decreased reserve in multiple organ systems, known as accumulated deficits, may better stratify perioperative risk than traditional risk indices. We hypothesized that an AD model would predict both perioperative adverse events and long-term survival after carotid endarterectomy (CEA), particularly important in asymptomatic patients. METHODS: Consecutive patients undergoing CEA between 1/1/2000 and 12/31/2010 were retrospectively identified...
July 6, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28689944/popliteal-venous-aneurysm-and-multiple-lower-extremity-varicose-veins-presenting-with-a-left-sided-inferior-vena-cava
#14
Masaya Nakashima, Masayoshi Kobayashi
A venous aneurysm (VA) is a relatively rare disease defined by cystic vasodilated lesions in a general vein. Popliteal venous aneurysm (PVA) is a rare clinical entity, and the first signs may be a thromboembolic event. They can cause potentially life-threating diseases, such as pulmonary embolism and deep venous thrombosis. A left-sided inferior vena cava (IVC) is a common anomaly associated with venous thrombus, resulting in anatomical variations in the venous return from the lower limbs. The general vascular malformation of PVA and left-sided IVC should also be preoperatively understood because of the unpredictable risk of thromboembolic complications...
July 6, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28689804/efficacy-and-safety-of-levosimendan-in-patients-with-acute-right-heart-failure-a-meta-analysis
#15
Jiayong Qiu, Lei Jia, Yingying Hao, Shenshen Huang, Yaqing Ma, Xiaofang Li, Min Wang, Yimin Mao
AIMS: Right heart failure (RHF), which is caused by a variety of heart and lung diseases, has a high morbidity and mortality rate. Levosimendan is a cardiac inotropic drug and vasodilator. The effect of levosimendan on RHF remains unclear. We sought to evaluate the efficacy and safety of levosimendan in patients with acute RHF. MATERIALS AND METHODS: We systematically searched PubMed, Cochrane Library, EMBASE, and ClinicalTrials.gov to identify studies reporting the efficacy and safety of levosimendan for the treatment of RHF...
July 6, 2017: Life Sciences
https://www.readbyqxmd.com/read/28689173/current-understanding-and-management-of-pulmonary-langerhans-cell-histiocytosis
#16
Robert Vassallo, Sergio Harari, Abdellatif Tazi
Pulmonary Langerhans cell histiocytosis (PLCH) is a diffuse lung disease that usually affects young adult smokers. PLCH affects different lung compartments; bronchiolar, interstitial and pulmonary vascular dysfunction may coexist to varying extents, resulting in diverse phenotypes. Analyses of PLCH tissues have identified activating mutations of specific mitogen-activated protein kinases (BRAF(V600E) and others). The current consensus is that PLCH represents a myeloid neoplasm with inflammatory properties: the myeloid tumour cells exhibit surface CD1a expression and up to 50% of the cells harbour activating BRAF or other MAPK mutations...
July 8, 2017: Thorax
https://www.readbyqxmd.com/read/28688989/involvement-of-oxidative-stress-and-calcium-signaling-in-airborne-particulate-matter-induced-damages-in-human-pulmonary-artery-endothelial-cells
#17
J Deweirdt, J F Quignard, B Crobeddu, A Baeza-Squiban, J Sciare, A Courtois, S Lacomme, E Gontier, B Muller, J P Savineau, R Marthan, C Guibert, I Baudrimont
Recent studies have revealed that particulate matter (PM) exert deleterious effects on vascular function. Pulmonary artery endothelial cells (HPAEC), which are involved in the vasomotricity regulation, can be a direct target of inhaled particles. Modifications in calcium homeostasis and oxidative stress are critical events involved in the physiopathology of vascular diseases. The objectives of this study were to assess the effects of PM2.5 on oxidative stress and calcium signaling in HPAEC. Different endpoints were studied, (i) intrinsic and intracellular production of reactive oxygen species (ROS) by the H2DCF-DA probe, (ii) intrinsic, intracellular and mitochondrial production of superoxide anion (O2(-)) by electronic paramagnetic resonance spectroscopy and MitoSOX probe, (iii) reactive nitrosative species (RNS) production by Griess reaction, and (vi) calcium signaling by the Fluo-4 probe...
July 5, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28686688/therapeutic-impact-of-dietary-vitamin-d-supplementation-for-preventing-right-ventricular-remodeling-and-improving-survival-in-pulmonary-hypertension
#18
Hiroaki Tanaka, Masaharu Kataoka, Sarasa Isobe, Tsunehisa Yamamoto, Kohsuke Shirakawa, Jin Endo, Toru Satoh, Yoji Hakamata, Eiji Kobayashi, Motoaki Sano, Keiichi Fukuda
BACKGROUND: Pulmonary hypertension (PH), caused by elevated pulmonary vascular resistance, leads to right heart failure and ultimately death. Vitamin D deficiency can predispose individuals to hypertension and left ventricular dysfunction; however, it remains unknown how serum vitamin D level is related to PH and right ventricular (RV) dysfunction. METHODS: Serum 25-hydroxyvitamin D [25(OH)D] levels were assessed in PH patients for an association with disease severity...
2017: PloS One
https://www.readbyqxmd.com/read/28683960/arterial-stiffening-with-exercise-in-patients%C3%A2-with-heart-failure-and-preserved%C3%A2-ejection-fraction
#19
Yogesh N V Reddy, Mads J Andersen, Masaru Obokata, Katlyn E Koepp, Garvan C Kane, Vojtech Melenovsky, Thomas P Olson, Barry A Borlaug
BACKGROUND: Aortic stiffening and reduced nitric oxide (NO) availability may contribute to the pathophysiology of heart failure with preserved ejection fraction (HFpEF). OBJECTIVES: This study compared indices of arterial stiffness at rest and during exercise in subjects with HFpEF and hypertensive control subjects to examine their relationships to cardiac hemodynamics and determine whether exertional arterial stiffening can be mitigated by inorganic nitrite. METHODS: A total of 22 hypertensive control subjects and 98 HFpEF subjects underwent hemodynamic exercise testing with simultaneous expired gas analysis to measure oxygen consumption...
July 11, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28683951/diagnosis-and-exclusion-of-pulmonary-embolism
#20
Jeffrey A Kline
BACKGROUND: Failure to test for pulmonary embolism (PE) can be a lethal mistake, but PE and produces symptoms similar to many other diseases. Overtesting for PE has negative consequences. OBJECTIVES: Use published evidence to create a rationale and safe diagnostic approach for ambulatory and emergency patients with suspected PE in 2017. FINDINGS: Pulmonary embolism need not be pursued in patients with no symptoms of PE in the present or recent history (dyspnea, chest pain, cough or syncope), and always normal vital signs...
June 7, 2017: Thrombosis Research
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