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https://www.readbyqxmd.com/read/29331510/effects-of-sub-minimum-inhibitory-concentrations-of-lemon-essential-oil-on-the-acid-tolerance-and-biofilm-formation-of-streptococcus-mutans
#1
Yanwei Sun, Sijia Chen, Chen Zhang, Yali Liu, Li Ma, Xiangyu Zhang
OBJECTIVES: Lemon essential oil (LEO) is a kind of secondary metabolite from lemon peels and has been found to inhibit cariogenic bacteria for decades. However, its effects on main cariogenic virulence factors are rarely reported. The present study aimed to investigate the effects of sub-minimum inhibitory concentrations (sub-MICs) of LEO on the acid tolerance and biofilm formation of Streptococcus mutans (S. mutans) and preliminarily reveal the possible underlying mechanisms. DESIGNS: Effects of LEO on the acid tolerance and biofilm formation of S...
December 29, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/29298124/inhaled-budesonide-does-not-affect-hypoxic-pulmonary-vasoconstriction-at-4559-meter-of-altitude
#2
Marc Moritz Berger, Franziska Macholz, Peter Schmidt, Sebastian Fried, Tabea Perz, Daniel Dankl, Josef Niebauer, Peter Bärtsch, Heimo Mairbäurl, Mahdi Sareban
Berger, Marc Moritz, Franziska Macholz, Peter Schmidt, Sebastian Fried, Tabea Perz, Daniel Dankl, Josef Niebauer, Peter Bärtsch, Heimo Mairbäurl, and Mahdi Sareban. Inhaled budesonide does not affect hypoxic pulmonary vasoconstriction at 4559 m of altitude. High Alt Med Biol 00:000-000, 2017.-Oral intake of the corticosteroid dexamethasone has been shown to lower pulmonary artery pressure (PAP) and to prevent high-altitude pulmonary edema. This study tested whether inhalation of the corticosteroid budesonide attenuates PAP and right ventricular (RV) function after rapid ascent to 4559 m...
January 3, 2018: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/29284512/quantifying-the-learning-curve-for-pulmonary-thromboendarterectomy
#3
Smita Sihag, Bao Le, Alison S Witkin, Josanna M Rodriguez-Lopez, Mauricio A Villavicencio, Gus J Vlahakes, Richard N Channick, Cameron D Wright
BACKGROUND: Pulmonary thromboendarterectomy (PTE) is an effective treatment for chronic thromboembolic pulmonary hypertension (CTEPH), but is a technically challenging operation for cardiothoracic surgeons. Starting a new program allows an opportunity to define a learning curve for PTE. METHODS: A retrospective case review was performed of 134 consecutive PTEs performed from 1998 to 2016 at a single institution. Outcomes were compared using either a two-tailed t-test for continuous variables or a chi-squared test for categorical variables according to experience of the program by terciles (T)...
December 28, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/29223748/is-tricuspid-annuloplasty-increasing-surgical-mortality-and-morbidity-during-mitral-valve-replacement-a-single-centre-experience
#4
Constance Verdonk, Arthur Darmon, Claire Cimadevilla, Laurent Lepage, Richard Raffoul, Patrick Nataf, Alec Vahanian, David Messika-Zeitoun
BACKGROUND: Performance of tricuspid annuloplasty (TA) in patients undergoing mitral valve surgery is recommended based on the degree of tricuspid regurgitation and tricuspid annulus size, but is often underused. AIM: To evaluate the impact of combined TA on in-hospital outcome in patients undergoing mitral valve replacement (MVR). METHODS: We selected all consecutive patients who underwent MVR for native valve disease. Clinical, echocardiographic and in-hospital complications were obtained from chart review...
December 6, 2017: Archives of Cardiovascular Diseases
https://www.readbyqxmd.com/read/29098525/prognostic-value-of-real-time-three-dimensional-echocardiography-compared-to-two-dimensional-echocardiography-in-patients-with-systolic-heart-failure
#5
Frederico J N Mancuso, Valdir A Moises, Dirceu R Almeida, Dalva Poyares, Luciana J Storti, Flavio S Brito, Sergio Tufik, Angelo A V de Paola, Antonio C C Carvalho, Orlando Campos
Heart failure (HF) is associated with morbidity and mortality. Real-time three-dimensional echocardiography (RT3DE) may offer additional prognostic data in patients with HF. The study aimed to evaluate the prognostic value of real-time three-dimensional echocardiography (RT3DE). This is a prospective study that included 89 patients with HF and left ventricular ejection fraction (LVEF) < 0.50 who were followed for 48 months. Left atrium and ventricular volumes and functions were evaluated by RT3DE. TDI and two-dimensional echocardiography parameters were also obtained...
November 2, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29042956/evaluation-of-the-hemodynamics-and-right-ventricular-function-in-pulmonary-hypertension-by-echocardiography-compared-with-right-sided-heart-catheterization
#6
Yidan Li, Yidan Wang, Hong Li, Weiwei Zhu, Xiangli Meng, Xiuzhang Lu
The present study aimed to evaluate hemodynamics and right ventricular function in patients with pulmonary hypertension (PH) using transthoracic echocardiography and to compare these results with measurements obtained using right-sided heart catheterization (RHC). A total of 75 patients with PH were examined using echocardiography and RHC. Patients were divided into the following two groups according to their difference between SPAPecho and SPAPRHC measurement: The overestimated group and underestimated group...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28983171/net-atrioventricular-compliance-can-predict-persistent-pulmonary-artery-hypertension-after-percutaneous-mitral-balloon-commissurotomy
#7
Mohammad M Al-Daydamony, Tamer M Moustafaa
BACKGROUND: Pulmonary hypertension is a common complication of rheumatic mitral stenosis (MS). Patients with similar mitral valve (MV) areas may have different pulmonary artery pressures. Net atrioventricular compliance (Cn) was found to play an important role in the development of pulmonary hypertension. AIM: To test the value of Cn in predicting persistent pulmonary artery hypertension (PPAH) after percutaneous mitral balloon commissurotomy (PMBC). PATIENTS AND METHODS: Eighty patients with severe MS, suitable for PMBC were included in the study...
October 2017: Journal of the Saudi Heart Association
https://www.readbyqxmd.com/read/28981519/pulmonary-hypertension-subtypes-associated-with-hereditary-haemorrhagic-telangiectasia-haemodynamic-profiles-and-survival-probability
#8
Sabine Revuz, Evelyne Decullier, Isabelle Ginon, Nicolas Lamblin, Pierre-Yves Hatron, Pierre Kaminsky, Marie-France Carette, Pascal Lacombe, Anne-Claire Simon, Sophie Rivière, Jean-Robert Harlé, Alain Fraisse, Christian Lavigne, Vanessa Leguy-Seguin, Ari Chaouat, Chahera Khouatra, Sophie Dupuis-Girod, Eric Hachulla
BACKGROUND: Different pulmonary hypertension (PH) mechanisms are associated with hereditary haemorrhagic telangiectasia (HHT). METHODS AND RESULTS: We conducted a retrospective study of all suspected cases of PH (echocardiographically estimated systolic pulmonary artery pressure [sPAP] ≥ 40 mmHg) in patients with definite HHT recorded in the French National Reference Centre for HHT database. When right heart catheterization (RHC) was performed, PH cases were confirmed and classified among the PH groups according to the European guidelines...
2017: PloS One
https://www.readbyqxmd.com/read/28979751/correlation-of-echocardiographic-findings-of-pulmonary-hypertension-with-six-minute-walk-test-and-plasma-pro-b-type-natriuretic-peptide-level-in-systemic-lupus-erythematous
#9
Leila Ghofraniha, Zahra Mirfeizi, Fatemeh Seyyedi Khabbaz, Farveh Vakilian, Saeed Eslami
INTRODUCTION: Pulmonary arterial hypertension (PAH) is an increasingly recognized complication of systemic lupus erythematous (SLE), which may remain undiagnosed if asymptomatic. OBJECTIVE: This study aimed to determine the correlation between echocardiographic findings of PAH and six-minute walk test (6WMT) and serum pro b-type natriuretic peptide (proBNP) level in patients with SLE. METHODS: This cross-sectional study was performed on 50 SLE patients selected from patients referring to the outpatient's department of the Rheumatology Clinic at Imam Reza Hospital in Mashhad, Iran, from July 2013 through September 2014, using resting transthoracic echocardiography to estimate systolic pulmonary artery pressure (sPAP)...
August 2017: Electronic Physician
https://www.readbyqxmd.com/read/28971974/hypoxia-induced-changes-in-plasma-micrornas-correlate-with-pulmonary-artery-pressure-at-high-altitude
#10
Birgit Blissenbach, Christos T Nakas, Martin Krönke, Thomas Geiser, Tobias M Merz, Jacqueline Pichler Hefti
In vitro and animal studies revealed miRs to be involved in modulation of hypoxia-induced pulmonary hypertension (HPH). However, knowledge on circulating miRs in humans in the context of HPH is very limited. Since symptoms of HPH are non-specific and non-invasive diagnostic parameters do not exist, a disease-specific and hypoxemia-independent biomarker indicating HPH would be of clinical value. To examine whether plasma miR levels correlate with hypoxia-induced increase in pulmonary artery pressures, plasma miRs were assessed in a model of hypoxia-related pulmonary hypertension in humans exposed to extreme altitude...
September 28, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28959103/long-term-survival-of-patients-with-pulmonary-arterial-hypertension-at-a-single-center-in-taiwan
#11
Le-Yung Wang, Kuang-Tso Lee, Chia-Pin Lin, Lung-An Hsu, Chun-Li Wang, Tsu-Shiu Hsu, Wan-Jing Ho
BACKGROUND: Clinical studies have suggested predictive parameters in mortality risk assessment for pulmonary arterial hypertension (PAH) patients. However, these studies predominantly include Caucasian population; information in Asian population is relatively deficient. In this study, we investigated the long-term survival of PAH patients and the predictors of mortality in our population. METHODS: We prospectively collected 70 patients with PAH at the Chang Gung Memorial Hospital between March 2002 and February 2015...
September 2017: Acta Cardiologica Sinica
https://www.readbyqxmd.com/read/28958656/streptococcus-mutans-adhesin-biotypes-that-match-and-predict-individual-caries-development
#12
Anders Esberg, Nongfei Sheng, Lena Mårell, Rolf Claesson, Karina Persson, Thomas Borén, Nicklas Strömberg
Dental caries, which affects billions of people, is a chronic infectious disease that involves Streptococcus mutans, which is nevertheless a poor predictor of individual caries development. We therefore investigated if adhesin types of S.mutans with sucrose-independent adhesion to host DMBT1 (i.e. SpaP A, B or C) and collagen (i.e. Cnm, Cbm) match and predict individual differences in caries development. The adhesin types were measured in whole saliva by qPCR in 452 12-year-old Swedish children and related to caries at baseline and prospectively at a 5-year follow-up...
October 2017: EBioMedicine
https://www.readbyqxmd.com/read/28941607/impact-of-left-ventricular-vs-biventricular-pacing-on-reverse-remodelling-insights-from-the-evaluation-of-resynchronization-therapy-for-heart-failure-earth-trial
#13
RANDOMIZED CONTROLLED TRIAL
Sabah Skaf, Bernard Thibault, Paul Khairy, Eileen O'Meara, Annik Fortier, Halyna V Vakulenko, Céline Pitre, Michel White, Anique Ducharme
BACKGROUND: Studies comparing biventricular (BiV) cardiac resynchronization therapy (CRT) and left ventricular (LV) pacing alone have yielded conflicting results. We recently reported the results of the Greater Evaluation of Resynchronization Therapy for Heart Failure (GREATER-EARTH) trial demonstrating similar clinical benefits of BiV and LV-CRT on exercise tolerance. We report the prespecified secondary outcomes of the GREATER-EARTH trial, comparing the impact of BiV vs LV-CRT on structural and biochemical cardiac remodelling...
October 2017: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/28829513/mechanisms-of-oxidative-stress-effects-of-the-nadph-oxidase-ros-nf-%C3%AE%C2%BAb-transduction-pathway-and-vpo1-on-patients-with-chronic-obstructive-pulmonary-disease-combined-with-pulmonary-hypertension
#14
B Zhuan, Y Yu, Z Yang, X Zhao, P Li
OBJECTIVE: This study explored the oxidative stress effects of the NADPH oxidase-ROS-NF-κB transduction pathway and vascular peroxidase 1 (VPO1) on patients with chronic obstructive pulmonary disease (COPD) combined with pulmonary hypertension (PH). PATIENTS AND METHODS: 30 patients with pure COPD and 30 patients with stable COPD combined with PH, who were admitted to our hospital from January 2015 to December 2015, were enrolled as the control group and the observation group, respectively...
August 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28798201/remote-ischemic-preconditioning-does-not-prevent-acute-mountain-sickness-after-rapid-ascent-to-3450-m
#15
Marc M Berger, Franziska Macholz, Lukas Lehmann, Daniel Dankl, Marcel Hochreiter, Bernhard Bacher, Peter Bärtsch, Heimo Mairbäurl
Remote ischemic preconditioning (RIPC) has been shown to protect remote organs, such as the brain and the lung, from damage induced by subsequent hypoxia or ischemia. Acute mountain sickness (AMS) is a syndrome of non-specific neurologic symptoms and in high altitude pulmonary edema excessive hypoxic pulmonary vasoconstriction (HPV) plays a pivotal role. We hypothesized that RIPC protects the brain from AMS and attenuates the magnitude of HPV after rapid ascent to 3450 m. Forty non-acclimatized volunteers were randomized into 2 groups...
August 10, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28756635/can-adma-play-a-role-in-determining-pulmonary-hypertension-related-to-chronic-obstructive-pulmonary-disease
#16
Selda Telo, Gamze Kırkıl, Mutlu Kuluöztürk, Mehmet Balin, Figen Deveci
BACKGROUND AND AIMS: Asymmetric dimethylarginine (ADMA) decreases the levels of nitric oxide by inhibiting nitric oxide synthases. In this study, the possible role of ADMA in determining pulmonary hypertension (PH) in chronic obstructive pulmonary disease (COPD) patients was investigated. METHODS: Stable COPD patients who were admitted to pulmonology outpatient clinic were involved in the study. Forty healthy volunteers, with similar ages and sexes, were accepted as the control group...
July 29, 2017: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/28734909/prognostic-value-of-exercise-stress-echocardiography-in-asymptomatic-patients-with-aortic-valve-stenosis
#17
Coppelia Goublaire, Maria Melissopoulou, David Lobo, Naozumi Kubota, Constance Verdonk, Claire Cimadevilla, Isabelle Codogno, Eric Brochet, Alec Vahanian, David Messika-Zeitoun
OBJECTIVES: This study sought to evaluate the prognostic value of mean pressure gradient (MPG) increase and peak systolic pulmonary artery pressure (SPAP) measured during exercise stress echocardiography in asymptomatic patients with aortic stenosis (AS). BACKGROUND: Exercise testing is recommended in asymptomatic AS patients, but the additional value of exercise-stress echocardiography, especially the prognostic value of MPG increase and peak SPAP, is still debated...
July 13, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28705939/changes-in-pulmonary-exercise-haemodynamics-in-scleroderma-a-4-year-prospective-study
#18
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/28689751/postprocedural-changes-of-tricuspid-regurgitation-after-mitraclip-therapy-for-mitral-regurgitation
#19
MULTICENTER STUDY
Kentaro Toyama, Kengo Ayabe, Saibal Kar, Shunsuke Kubo, Toshinori Minamishima, Florian Rader, Takahiro Shiota, Toshihiko Nishioka, Robert J Siegel
The effect of percutaneous mitral valve repair using the MitraClip system on tricuspid regurgitation (TR) has not been well investigated. We retrospectively analyzed 102 consecutive patients who underwent the successful MitraClip procedure, and who also had a preprocedural and 1-year follow-up transthoracic echocardiography. TR severity was graded by standard guideline-recommended criteria. At 1 year after the MitraClip procedure, the degree of TR regressed (at least 1 grade) in 23% of the patients, was unchanged in 62% of the patients, and progressed in 16% of the patients...
September 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28664832/clinical-determinants-of-elevated-systolic-pulmonary-artery-pressure-measured-by-transthoracic-doppler-echocardiography-in-early-systemic-sclerosis
#20
Patricia E Carreira, Loreto Carmona, Beatriz E Joven, Estibaliz Loza, Jose Luis Andreu, Gabriela Riemekasten, Serena Vettori, Yannick Allanore, Alexandra Balbir-Gurman, Paolo Airò, Ulrich A Walker, Nemanja Damjanov, Lidia P Ananieva, Simona Rednic, László Czirják, Oliver Distler, Dominique Farge, Roger Hesselstrand, Ada Corrado, Paola Caramaschi, Mohammed Tikly, Marco Matucci-Cerinic
OBJECTIVES: To explore the prevalence and clinical associations of elevated systolic pulmonary artery pressure (sPAP), measured by Transthoracic Doppler-echocardiography (TTE) in patients with early systemic sclerosis (SSc). METHODS: A cross-sectional analysis of the prospective EULAR Scleroderma Trial and Research (EUSTAR) database was performed. SSc patients with <3 years from the first non-Raynaud's phenomenon (RP) symptom at baseline EUSTAR visit, were selected...
June 20, 2017: Clinical and Experimental Rheumatology
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