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Relative wall thickness

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https://www.readbyqxmd.com/read/29019018/long-term-anabolic-steroids-in-male-bodybuilders-induce-cardiovascular-structural-and-autonomic-abnormalities
#1
Octávio Barbosa Neto, Gustavo Ribeiro da Mota, Carla Cristina De Sordi, Elisabete Aparecida M R Resende, Luiz Antônio P R Resende, Marco Antônio Vieira da Silva, Moacir Marocolo, Rafael Silva Côrtes, Lucas Felipe de Oliveira, Valdo José Dias da Silva
OBJECTIVE: The aims of this study were to examine the hypothesis that users of anabolic androgenic steroids (AAS) would have cardiac autonomic disorders and that there is a correlation between sympathetic modulation, high blood pressure (BP) and alterations to cardiac dimensions. METHODS: Forty-five male subjects were enrolled in the study. They were categorized into three groups comprising bodybuilders actively using AAS (AAS users; n = 15), bodybuilders who had never used AAS (nonusers; n = 15) and age-paired healthy sedentary controls (n = 15)...
October 10, 2017: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/29016960/validation-of-the-hcm-risk-scd-model-in-patients-with-hypertrophic-cardiomyopathy-following-alcohol-septal-ablation
#2
Max Liebregts, Lothar Faber, Morten K Jensen, Pieter A Vriesendorp, Peter R Hansen, Hubert Seggewiss, Dieter Horstkotte, Radka Adlova, Michelle Michels, Henning Bundgaard, Jurriën M Ten Berg, Josef Veselka
Aims: The HCM Risk-SCD model for prediction of sudden cardiac death (SCD) in hypertrophic cardiomyopathy recommended by the 2014 European Society of Cardiology (ESC) guidelines has not been validated after septal reduction therapy. The aim of this study was to validate the HCM Risk-SCD model in patients undergoing alcohol septal ablation (ASA) and to compare its performance to previous models. Methods and result: A total of 844 ASA patients without prior SCD event were included...
September 18, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28990189/cell-wall-physicochemical-properties-determine-the-thallus-biomineralization-pattern-of-padina-gymnospora-phaeophyceae
#3
Rodrigo Tomazetto de Carvalho, Gustavo Miranda Rocha, Wladimir Costa Paradas, Angélica Ribeiro Soares, Gláucia Ank Guarino, Raoni Moreira Ferreira Passos, Gilberto Menezes Amado Filho, Marcos Farina, Leonardo Tavares Salgado
Approximately half of the Padina (Dictyotales, Phaeophyceae) species mineralize aragonite needles over the adaxial thallus surface, where mineral bands are interspersed with non-mineralized regions along the thallus from the apical to basal end. However, this calcification pattern and the related algal properties are not well understood. Therefore, this work was performed to elucidate a potential role of cell walls in the inhibition/induction of mineralization in the brown alga Padina gymnospora. In a comparison of specific thallus regions, differences were identified in the cellulose distribution, microfibrils arrangement and thickness, distribution and abundance of phenolic substances, and physical differences among the surfaces of the thallus (deformation, adhesion, topography and nano-rugosity)...
October 9, 2017: Journal of Phycology
https://www.readbyqxmd.com/read/28988391/transcriptional-profiling-of-cork-oak-phellogenic-cells-isolated-by-laser-microdissection
#4
Rita Teresa Teixeira, Ana Margarida Fortes, Hua Bai, Carla Pinheiro, Helena Pereira
The phenylpropanoid pathway impacts the cork quality development. In cork of bad quality, the flavonoid route is favored, whereas in good quality, cork lignin and suberin production prevails. Cork oaks develop a thick cork tissue as a protective shield that results of the continuous activity of a secondary meristem, the cork cambium, or phellogen. Most studies applied to developmental processes do not consider the cell types from which the samples were extracted. Here, laser microdissection (LM) coupled with transcript profiling using RNA sequencing (454 pyrosequencing) was applied to phellogen cells of trees producing low- and good quality cork...
October 7, 2017: Planta
https://www.readbyqxmd.com/read/28986271/the-subclinical-cardiomyopathy-of-friedreich-s-ataxia-in-a-pediatric-population
#5
Jonathan F Plehn, Keren Hasbani, Inez Ernst, Kenneth D Horton, Bart E Drinkard, Nicholas A Di Prospero
BACKGROUND: Identification of a subclinical cardiomyopathy in a pediatric patients with Friedreich's ataxia (FA) has not been well-described. METHODS: We performed echocardiography (echo), cardiac magnetic resonance imaging (cMRI) and neurologic assessment in a cross-sectional analysis of 48 genetically-confirmed FA subjects aged 9-17 years with moderate neurologic impairment but without a cardiovascular history. Echo and cMRI-determined left ventricular mass were indexed to height in g/m2...
October 3, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/28985347/systemic-angiotensinogen-concentrations-are-independently-associated-with-left-ventricular-diastolic-function-in-a-community-sample
#6
Aletta M E Millen, Angela J Woodiwiss, Monica Gomes, Frederic Michel, Gavin R Norton
Background: Left ventricular (LV) diastolic dysfunction characterizes heart failure with a preserved ejection fraction. Although it is recognized that the renin-angiotensin-aldosterone-system (RAAS) decreases LV diastolic function, whether systemic angiotensinogen contributes to these effects is uncertain. Hence the aim was to determine the relationship between systemic angiotensinogen concentrations and LV diastolic function. Methods: Left ventricular diastolic function was determined from the mean of the lateral and septal wall myocardial tissue lengthening at the mitral annulus (average e') and from the ratio of early transmitral blood flow velocity (E) to average e' (E/e') in 445 black African participants from a community sample...
August 18, 2017: American Journal of Hypertension
https://www.readbyqxmd.com/read/28981627/validity-of-contrast-enhanced-ultrasonography-and-dynamic-contrast-enhanced-mr-enterography-in-the-assessment-of-transmural-activity-and-fibrosis-in-crohn%C3%A2-s-disease
#7
Rune Wilkens, Rikke H Hagemann-Madsen, David A Peters, Agnete H Nielsen, Charlotte B Nørager, Henning Glerup, Klaus Krogh
Background and Aims: Increased small intestinal wall thickness correlates with both inflammatory activity and fibrosis in Crohn's disease (CD). Assessment of perfusion holds promise as an objective marker distinguishing between the two conditions. Our primary aim was to determine if relative bowel wall perfusion measurements correlate with histopathological scores for inflammation or fibrosis in CD. Methods: Twenty-five patients were investigated prior to elective surgery for small intestinal CD...
August 3, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28980596/-certain-morphometric-characteristics-of-the-normal-maxillary-sinus
#8
D A Shcherbakov, A I Kryukov, V N Krasnozhen, A I Hukumatshoev, A I Karimova
Maxillary sinus is more than any other paranasal sinuses amenable to various pathological conditions that may require the surgical treatment. The objective of the present work was to study the age-related and the individual specific anatomical features of the walls of the maxillary sinus and to develop the principles of sinus surgery based on the results of the anthropometric studies. We analyzed the cone-beam CT scans obtained from 586 patients at the age varying from 5 to 60 years who were allocated to six different groups...
2017: Vestnik Otorinolaringologii
https://www.readbyqxmd.com/read/28978347/clinical-features-of-igg4-related-periaortitis-periarteritis-based-on-the-analysis-of-179-patients-with-igg4-related-disease-a-case-control-study
#9
Makiko Ozawa, Yasunari Fujinaga, Junpei Asano, Akira Nakamura, Takayuki Watanabe, Tetsuya Ito, Takashi Muraki, Hideaki Hamano, Shigeyuki Kawa
BACKGROUND: Immunoglobulin G4-related disease (IgG4-RD) is a newly recognized systemic condition characterized by high serum immunoglobulin G4 (IgG4) concentration and IgG4-bearing plasma cell infiltration in affected organs. Although it has become evident that IgG4-RD also involves the systemic aortic/arterial system, the precise details of this condition remain unclear. The present study sought to clarify the clinical features of IgG4-related periaortitis/periarteritis. METHODS: Among 223 patients with IgG4-RD, 179 (131 male, median onset age 67 years) were recruited for this study...
October 4, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28974476/constitutive-modeling-of-human-femoropopliteal-artery-biaxial-stiffening-due-to-aging-and-diabetes
#10
Anastasia Desyatova, Jason MacTaggart, Alexey Kamenskiy
Atherosclerotic obstructive disease of the femoropopliteal artery (Peripheral Arterial Disease, PAD) is notorious for high treatment failure rates. Older age and diabetes mellitus (DM) are among the major risk factors for PAD, and both are associated with increased arterial stiffness. Our goal was to develop a constitutive model describing multiaxial arterial stiffening, and use it to portray aging of normal and diabetic human femoropopliteal arteries (FPA). Fresh human FPAs (n=744) were obtained from 13-82-year-old donors...
September 30, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28972483/peculiarities-of-remodeling-of-heart-and-neurohumoral-status-in-patients-with-chronic-heart-failure-and-concomitant-renal-disease-depending-on-the-value-of-the-ejection-fraction-of-the-left-ventricle
#11
О Bilchenko, V Kravtsova, Y Samburh, O Hodlevska, V Gavrilyuk
67 patients with CHF of FC II and concomitant chronic pyelonephritis at remission stage for not less than 6 months. As of the screening moment, intervention group (n=67 patients) and control group (n=22 apparently healthy individuals) were formed. The intervention group was divided into 3 groups: group 1 included 22 CHF patients with preserved LV EF (≥50%) associated with AH and concomitant CRD. Group 2 included 23 CHF patients with decreased heart LV EF (≤40%, but not less than 35%) associated with AH and concomitant CRD...
September 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28960715/evaluation-of-echocardiography-and-cardiac-biomarker-concentrations-in-dogs-with-gastric-dilatation-volvulus
#12
Brent D Aona, John E Rush, Elizabeth A Rozanski, Suzanne M Cunningham, Claire R Sharp, Lisa M Freeman
OBJECTIVE: To assess abnormalities in concentrations of cardiac troponin I (cTnI), lactate, and N-terminal pro-B-type natriuretic peptide (NT-proBNP) in relation to arrhythmias, echocardiographic measurements, and survival in dogs with gastric dilatation volvulus (GDV). DESIGN: Prospective observational study. SETTING: University hospital. ANIMALS: Twenty-two dogs with naturally occurring GDV. SAMPLES: Concentrations of cTnI, plasma lactate, and NT-proBNP were recorded at presentation to the emergency room, the time closest to echocardiography, and the highest recorded concentrations during hospitalization...
September 28, 2017: Journal of Veterinary Emergency and Critical Care
https://www.readbyqxmd.com/read/28957163/wedge-shaped-semiconductor-nanowall-arrays-with-excellent-light-management
#13
Xinyu Chen, Jiang Wang, Shengchun Qin, Qiang Chen, Yali Li, Junshuai Li, Deyan He
In this Letter, a light management structure composed of wedge-shaped semiconductor nanowall arrays is introduced. Theoretical investigation based on gallium arsenide (GaAs) indicates that a 1000 nm high array (wall base width/array periodicity: 500 nm) with an effective thickness of only 500 nm can deliver a maximum photocurrent density (Jph) of ∼29.0  mA/cm(2) at AM1.5G illumination. (For an ideal absorber with the same bandgap, the corresponding value is ∼32.0  mA/cm(2).) However, Jph of a 1500 nm thick flat GaAs film is only ∼19...
October 1, 2017: Optics Letters
https://www.readbyqxmd.com/read/28954450/-study-on-the-relationship-between-laparoscopic-operation-and-pseudo-vascular-invasion-in-stage-%C3%A2-a-endometrial-carcinoma
#14
L W Li, L Han, Y P Wang, Q Chen, L Z Zhang
Objective: To explore relations between pseudo vascular invasion (PVI) and laparoscopic operation in patients with stage Ⅰa endometrial carcinoma. Methods: Details of stage Ⅰa endometrial carcinoma patients' clinical information and pathological sections who received operation treatment between January 2008 and October 2015 were obtained from the Dalian Maternal and Child Health Hospital. There were 515 cases entrolled into this study, including 332 (64.5%) cases performed surgery by laparoscopy and 183 (35...
September 25, 2017: Zhonghua Fu Chan Ke za Zhi
https://www.readbyqxmd.com/read/28954392/pulsed-eddy-current-sensing-for-critical-pipe-condition-assessment
#15
Nalika Ulapane, Alen Alempijevic, Teresa Vidal Calleja, Jaime Valls Miro
Pulsed Eddy Current (PEC) sensing is used for Non-Destructive Evaluation (NDE) of the structural integrity of metallic structures in the aircraft, railway, oil and gas sectors. Urban water utilities also have extensive large ferromagnetic structures in the form of critical pressure pipe systems made of grey cast iron, ductile cast iron and mild steel. The associated material properties render NDE of these pipes by means of electromagnetic sensing a necessity. In recent years PEC sensing has established itself as a state-of-the-art NDE technique in the critical water pipe sector...
September 26, 2017: Sensors
https://www.readbyqxmd.com/read/28951123/quantitative-multiphoton-microscopy-of-murine-urinary-bladder-morphology-during-in-situ-uniaxial-loading
#16
Jack Hornsby, Donna M Daly, David Grundy, Fangzhou Cheng, Anne M Robertson, Paul N Watton, Mark S Thompson
Urodynamic tests are the gold standard for the diagnosis of bladder dysfunction, and the mechanical compliance of the bladder is an important parameter in these tests. The bladder wall has a layered structure, differentially affected by pathology, so knowledge of the contribution and role of these layers and their constituents to overall bladder compliance will enhance interpretation of these clinical tests. In this study we document the functional morphology of the detrusor and lamina propria of the murine bladder wall using a custom in-situ tensile loading system under multiphoton microscopy (MPM) observation in unloaded state and under incremental uniaxial stretch...
September 22, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28947201/concomitant-ablation-for-atrial-fibrillation-during-septal-myectomy-in-patients-with-hypertrophic-obstructive-cardiomyopathy
#17
Alexander V Bogachev-Prokophiev, Alexander V Afanasyev, Sergei I Zheleznev, Alexei N Pivkin, Michael S Fomenko, Ravil M Sharifulin, Alexander M Karaskov
OBJECTIVE: The appearance of atrial fibrillation is associated with significant clinical deterioration in patients with obstructive hypertrophic cardiomyopathy; therefore, maintenance of sinus rhythm is desirable. Guidelines and most articles have reported the results of catheter ablation and pharmacologic atrial fibrillation treatment; nevertheless, data regarding concomitant procedures during septal myectomy are limited. The aim of this study was to assess the outcomes of concomitant atrial fibrillation treatment in patients with obstructive hypertrophic cardiomyopathy...
September 1, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28945967/a-novel-uv-shielding-and-transparent-polymer-film-when-bioinspired-dopamine-melanin-hollow-nanoparticles-join-polymers
#18
Yang Wang, Jing Su, Ting Li, Piming Ma, Huiyu Bai, Yi Xie, Mingqing Chen, Weifu Dong
Ultraviolet (UV) light is known to be harmful to human health and cause organic materials to undergo photodegradation. In this Research Article, bioinspired dopamine-melanin solid nanoparticles (Dpa-s NPs) and hollow nanoparticles (Dpa-h NPs) as UV-absorbers were introduced to enhance the UV-shielding performance of polymer. First, Dpa-s NPs were synthesized through autoxidation of dopamine in alkaline aqueous solution. Dpa-h NPs were prepared by the spontaneous oxidative polymerization of dopamine solution onto polystyrene (PS) nanospheres template, followed by removal of the template...
October 9, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28942100/doppler-ultrasonography-can-be-useful-to-determine-the-etiology-of-idiopathic-sudden-sensorineural-hearing-loss
#19
Ahmet Mutlu, Isa Cam, Sinem Dasli, Murat Topdag
OBJECTIVE: This study aims to evaluate clinical features of both carotid and vertebral arteries in the idiopathic sudden sensorineural hearing loss (ISSNHL) patients and healthy individuals to contribute additional knowledge on vascular compromise theory. METHODS: This study was designed as a retrospective case control study in a tertiary referral center. 55 patients for ISSNHL and 35 healthy participants (70 ears) are involved to the study. All of the patients were evaluated for the systemic disorders and excluded other possible causes (autoimmune diseases, acoustic schwannoma, drug toxicity, etc) of ISSNHL...
September 20, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28931350/sex-differences-in-associations-of-cardio-ankle-vascular-index-with-left-ventricular-function-and-geometry
#20
Zi Ye, Patricia A Pellikka, Iftikhar J Kullo
The cardio-ankle vascular index (CAVI) is a measure of global arterial stiffness. We hypothesized that CAVI is associated with left ventricular (LV) function and geometry in individuals without structural heart disease. We measured CAVI in 600 participants (mean age 60.3±14.6 years, 54% men) without history of atherosclerotic cardiovascular disease who were referred for transthoracic echocardiography. Linear regression analysis was used to assess the association of CAVI with LV function (peak mitral annular systolic s' and early diastolic velocity e') and structure (LV mass index (LVMI) and relative wall thickness (RWT))...
September 1, 2017: Vascular Medicine
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