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https://www.readbyqxmd.com/read/28814404/adaptive-spatiotemporal-changes-in-morphology-anatomy-and-mechanics-during-the-ontogeny-of-subshrubs-with-square-shaped-stems
#1
Ruwen Kaminski, Thomas Speck, Olga Speck
PREMISE OF THE STUDY: Plant stems can be regarded as fiber-reinforced structures characterized by anatomical heterogeneity, mechanical anisotropy, and adaptability to changing internal and external constraints. Our study focused on adaptive spatiotemporal changes in morphology, anatomy, and mechanical properties during the ontogeny of Leonurus cardiaca L. (Lamiaceae) internodes, proving considerable functional adaptability. METHODS: Four-point bending tests and torsional tests were carried out on the same internodes to measure flexural and torsional stiffness...
August 16, 2017: American Journal of Botany
https://www.readbyqxmd.com/read/28774383/atrial-cardiomyopathy-a-useful-notion-in-cardiac-disease-management-or-a-passing-fad
#2
REVIEW
Jean-Baptiste Guichard, Stanley Nattel
The term atrial cardiomyopathy, which has been used sporadically in the medical literature, was recently the subject of a detailed Consensus Document prepared by representatives of the European Heart Rhythm Association, Heart Rhythm Society, Asia-Pacific Heart Rhythm Society, and Sociedad Latinoamericana de Estimulación Cardiaca y Electrofisiología. They discussed aspects of the definition, histopathology, atrial-specific physiology, atrial pathology, impact on arrhythmia occurrence, imaging, mapping, and ablation...
August 8, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28767910/heart-rate-variability-based-on-risk-stratification-for-type-2-diabetes-mellitus
#3
Julia Silva-E-Oliveira, Pâmela Marina Amélio, Isabela Lopes Laguardia Abranches, Dênis Derly Damasceno, Fabianne Furtado
Objective: To evaluate heart rate variability among adults with different risk levels for type 2 diabetes mellitus. Methods: The risk for type 2 diabetes mellitus was assessed in 130 participants (89 females) based on the questionnaire Finnish Diabetes Risk Score and was classified as low risk (n=26), slightly elevated risk (n=41), moderate risk (n=27) and high risk (n=32). To measure heart rate variability, a heart-rate monitor Polar S810i® was employed to obtain RR series for each individual, at rest, for 5 minutes, followed by analysis of linear and nonlinear indexes...
April 2017: Einstein
https://www.readbyqxmd.com/read/28746572/effect-of-the-exercise-of-walkers-performed-in-public-squares-with-spontaneous-or-prescribed-intensity-on-post-exercise-hypotension
#4
Taís Feitosa da Silva, Alesandra Araújo de Souza, Fabiano Ferreira de Lima, Jennifer Ariely Sales Suassuna, Henrique Eduardo Paiva Lira do Couto, Gustavo Roque Tenório, Maria Irene de Andrade Gomes Silva, Guilherme Leandebal Bonifácio Dias, Alexandre Sérgio Silva
OBJECTIVE: To quantify the intensity adopted by walkers in public squares and check the occurrence and magnitude of post-exercise hypotension in the spontaneously adopted intensity and in a prescribed intensity. METHODS: In 98 volunteers (38 of them being hypertensive), walkers in public squares of the city of João Pessoa, State of Paraíba, Brazil, we have identified the intensity of a usual training monitored by heart rate and we have investigated the occurrence and magnitude of post-exercise hypotension...
July 20, 2017: Revista de Saúde Pública
https://www.readbyqxmd.com/read/28746558/effects-of-prayer-on-the-vital-signs-of-patients-with-chronic-kidney-disease-randomized-controlled-trial
#5
Thaila Oliveira Zatiti Brasileiro, Andressa Anunciação de Oliveira Prado, Bianca Bacelar de Assis, Denismar Alves Nogueira, Rogério Silva Lima, Erika de Cassia Lopes Chaves
OBJECTIVE: To assess the effect of prayer on blood pressure, heart rate and respiratory rate in patients with chronic kidney disease and learn their perception of the intervention. METHOD: A randomized controlledtrial, double blind with a sample of volunteers, randomized into an intervention group (n=42) and a control group (n=37). Questionnaires addressing socio-demographic, clinical and spiritual characteristics and the Duke University Religious Index were applied...
July 20, 2017: Revista da Escola de Enfermagem da U S P
https://www.readbyqxmd.com/read/28746520/relationship-between-cardiometabolic-parameters-and-elevated-resting-and-effort-heart-rate-in-schoolchildren
#6
Cristiane Fernanda da Silva, Miria Suzana Burgos, Priscila Tatiana da Silva, Leandro Tibiriçá Burgos, Letícia Welser, Ana Paula Sehn, Jorge André Horta, Elza Daniel de Mello, Cézane Priscila Reuter
Background: Little has been studied on heart rate and its relationship with metabolic disorders. Objective: To identify possible association between heart rate (HR) and metabolic disorders in children and adolescents. Methods: This cross-sectional study evaluated 2.098 subjects, aged between 7 and 17 years. The variables evaluated were: HR, systolic (SBP) and diastolic blood pressure (DBP), pulse pressure (PP), double-product (DP), myocardial oxygen consumption (mVO2), lipids, glucose and uric acid levels, body mass index (BMI) and waist circumference (WC)...
July 20, 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28700019/assessment-of-subclinical-doxorubicin-induced-cardiotoxicity-in-a-rat-model-by-speckle-tracking-imaging
#7
Yu Kang, Wei Wang, Hang Zhao, Zhiqing Qiao, Xuedong Shen, Ben He
Backgrounds: Despite their clear therapeutic benefits, anthracycline-induced cardiotoxicity is a major concern limiting the ability to reduce morbidity and mortality associated with cancers. The early identification of anthracycline-induced cardiotoxicity is of vital importance to assess the cardiac risk against the potential cancer treatment. Objective: To investigate whether speckle-tracking analysis can provide a sensitive and accurate measurement when detecting doxorubicin-induced left ventricular injury...
July 10, 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28700018/peripheral-vascular-resistance-impairment-during-isometric-physical-exercise-in-normotensive-offspring-of-hypertensive-parents
#8
Natália Portela, Josária Ferraz Amaral, Pedro Augusto de Carvalho Mira, Livia Victorino de Souza, Daniel Godoy Martinez, Mateus Camaroti Laterza
Background: A family history of hypertension is associated with vascular and autonomic abnormalities, as well as an impaired neurohemodynamic response to exercise. Objective: To test the hypothesis that normotensive individuals with a family history of hypertension present an impaired peripheral vascular resistance response to exercise. Methods: The study included 37 normotensive volunteers of both sexes who were sedentary, eutrophic, and nonsmokers, comprising 23 with (FH+; 24 ± 3 years) and 14 without (FH-; 27 ± 5 years) a family history of hypertension...
July 10, 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28699977/pacemaker-implants-in-children-and-adolescents-with-chagas-disease-in-brazil-18-year-incidence
#9
Carolina Christianini Mizzaci, Thiago Gonçalves Schroder E Souza, Gabriel Pelegrineti Targueta, Ana Paula Frederico Tótora, Juan Carlos Pachón Mateos, José Carlos Pachon Mateos
Background: Chagas disease continues to be a serious public health problem, and accounts for 25-30% of the indications for cardiac stimulation in Brazil. Objective: To assess clinical and epidemiological characteristics of patients with Chagas disease, younger than 18 years, who had undergone pacemaker implantation in Brazil between 1994 and 2011, and its temporal trend. Methods: This was a cross-sectional analysis of data from the Brazilian Pacemaker Registry database...
June 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28679559/prognostic-impact-of-diabetes-and-prediabetes-on-survival-outcomes-in-patients-with-chronic-heart-failure-a-post-hoc-analysis-of-the-gissi-hf-gruppo-italiano-per-lo-studio-della-sopravvivenza-nella-insufficienza-cardiaca-heart-failure-trial
#10
Marco Dauriz, Giovanni Targher, Pier Luigi Temporelli, Donata Lucci, Lucio Gonzini, Gian Luigi Nicolosi, Roberto Marchioli, Gianni Tognoni, Roberto Latini, Franco Cosmi, Luigi Tavazzi, Aldo Pietro Maggioni
BACKGROUND: The independent prognostic impact of diabetes mellitus (DM) and prediabetes mellitus (pre-DM) on survival outcomes in patients with chronic heart failure has been investigated in observational registries and randomized, clinical trials, but the results have been often inconclusive or conflicting. We examined the independent prognostic impact of DM and pre-DM on survival outcomes in the GISSI-HF (Gruppo Italiano per lo Studio della Sopravvivenza nella Insufficienza Cardiaca-Heart Failure) trial...
July 5, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28678931/vascular-aging-and-arterial-stiffness
#11
Luana de Rezende Mikael, Anelise Machado Gomes de Paiva, Marco Mota Gomes, Ana Luiza Lima Sousa, Paulo César Brandão Veiga Jardim, Priscila Valverde de Oliveira Vitorino, Maicon Borges Euzébio, Wátila de Moura Sousa, Weimar Kunz Sebba Barroso
Cardiovascular diseases (CVD) account annually for almost one third of all deaths worldwide. Among the CVD, systemic arterial hypertension (SAH) is related to more than half of those outcomes. Type 2 diabetes mellitus is an independent risk factor for SAH because it causes functional and structural damage to the arterial wall, leading to stiffness. Several studies have related oxidative stress, production of free radicals, and neuroendocrine and genetic changes to the physiopathogenesis of vascular aging. Indirect ways to analyze that aging process have been widely studied, pulse wave velocity (PWV) being considered gold standard to assess arterial stiffness, because there is large epidemiological evidence of its predictive value for cardiovascular events, and it requires little technical knowledge to be performed...
June 29, 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28678929/cardioprotective-effect-of-crocin-combined-with-voluntary-exercise-in-rat-role-of-mir-126-and-mir-210-in-heart-angiogenesis
#12
Vajihe Ghorbanzadeh, Mustafa Mohammadi, Hassan Dariushnejad, Alireza Abhari, Leila Chodari, Gisou Mohaddes
Background: Crocin is reported to have a wide range of biological activities such as cardiovascular protection. Recent epidemiologic studies have shown that exercise reduces cardiovascular morbidity and mortality in the general population. Objective: The aim of this study was to evaluate the effect of crocin and voluntary exercise on miR-126 and miR-210 expression levels and angiogenesis in the heart tissue. Methods: Animals were divided into 4 groups: control, exercise, crocin, and exercise-crocin...
July 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28678925/gestational-protein-restriction-increases-cardiac-connexin-43-mrna-levels-in-male-adult-rat-offspring
#13
Kamila Fernanda Rossini, Camila Andrea de Oliveira, Hércules Jonas Rebelato, Marcelo Augusto Marreto Esquisatto, Rosana Catisti
Background: The dietary limitation during pregnancy influences the growth and development of the fetus and offspring and their health into adult life. The mechanisms underlying the adverse effects of gestational protein restriction (GPR) in the development of the offspring hearts are not well understood. Objectives: The aim of this study was to evaluate the effects of GPR on cardiac structure in male rat offspring at day 60 after birth (d60). Methods: Pregnant Wistar rats were fed a normal-protein (NP, 17% casein) or low-protein (LP, 6% casein) diet...
July 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28678923/cardiac-amyloidosis-and-its-new-clinical-phenotype-heart-failure-with-preserved-ejection-fraction
#14
Evandro Tinoco Mesquita, Antonio José Lagoeiro Jorge, Celso Vale Souza, Thais Ribeiro de Andrade
Heart failure with preserved ejection fraction (HFpEF) is now an emerging cardiovascular epidemic, being identified as the main phenotype observed in clinical practice. It is more associated with female gender, advanced age and comorbidities such as hypertension, diabetes, obesity and chronic kidney disease. Amyloidosis is a clinical disorder characterized by the deposition of aggregates of insoluble fibrils originating from proteins that exhibit anomalous folding. Recently, pictures of senile amyloidosis have been described in patients with HFpEF, demonstrating the need for clinical cardiologists to investigate this etiology in suspect cases...
July 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28627194/s%C3%A3-ndrome-metab%C3%A3-lico-y-riesgo-cardiovascular-en-la-poblaci%C3%A3-n-diab%C3%A3-tica-de-el-hierro-islas-canarias
#15
M Candelaria Martín-González, Ana María Torres-Vega, Emilio González-Reimers, Geraldine Quintero-Platt, Camino Fernández-Rodríguez, Julio Alvisa-Negrín, Adnan Hawari-Meilud, Francisco Santolaria-Fernández
Introducción: en Canarias existe una elevada prevalencia de factores de riesgo vascular, superior a la del resto de España.Objetivo: analizar las características clínicas de 300 adultos diabéticos tipo II de El Hierro, en el Archipiélago Canario.Métodos: los pacientes fueron valorados en la Unidad de Medicina Interna del hospital entre 1982 a 2010, y seguidos hasta diciembre de 2014 o hasta su fallecimiento. La muestra se compone de 154 mujeres y 156 hombres (52%).Resultados: la edad media fue de 66...
June 5, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28591322/myocardial-viability-on-cardiac-magnetic-resonance
#16
Ana Luiza Mansur Souto, Rafael Mansur Souto, Isabella Cristina Resende Teixeira, Marcelo Souto Nacif
The study of myocardial viability is of great importance in the orientation and management of patients requiring myocardial revascularization or angioplasty. The technique of delayed enhancement (DE) is accurate and has transformed the study of viability into an easy test, not only for the detection of fibrosis but also as a binary test detecting what is viable or not. On DE, fibrosis equal to or greater than 50% of the segmental area is considered as non-viable, whereas that below 50% is considered viable...
May 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28562833/the-effect-of-physical-resistance-training-on-baroreflex-sensitivity-of-hypertensive-rats
#17
Moisés Felipe Pereira Gomes, Mariana Eiras Borges, Vitor de Almeida Rossi, Elizabeth de Orleans C de Moura, Alessandra Medeiros
Background: Baroreceptors act as regulators of blood pressure (BP); however, its sensitivity is impaired in hypertensive patients. Among the recommendations for BP reduction, exercise training has become an important adjuvant therapy in this population. However, there are many doubts about the effects of resistance exercise training in this population. Objective: To evaluate the effect of resistance exercise training on BP and baroreceptor sensitivity in spontaneously hypertensive rats (SHR)...
2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28562832/thromboembolism-and-bleeding-risk-scores-and-predictors-of-cardiac-death-in-a-population-with-atrial-fibrillation
#18
Rose Mary Ferreira Lisboa da Silva, Pollyana Ardavicius E Silva, Marcos Correia Lima, Lívia Tanure Sant'Anna, Túlio Corrêa Silva, Pedro Henrique Vilela Moreira, Robert Moreira Gandra, Túlio Ramos Cavalcanti, Plínio Henrique Vaz Mourão
Background: Atrial fibrillation (AF) is a common arrhythmia, with risk of systemic embolism and death. It presents rheumatic etiology in up to 32% of developing countries, whose anticoagulation and evolution data are scarce. Objectives: to determine the predictors of cardiac death considering the clinical profile, thromboembolism and bleeding scores of patients with AF of a single center, with high prevalence of rheumatic heart disease. Methods: 302 patients with AF were studied, mean age 58...
July 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28562831/three-dimensional-volumetric-assessment-of-diastolic-function-by-cardiac-magnetic-resonance-imaging-the-multi-ethnic-study-of-atherosclerosis-mesa
#19
Marcelo S Nacif, Andre L C Almeida, Alistair A Young, Brett R Cowan, Anderson C Armstrong, Eunice Yang, Christopher T Sibley, W Gregory Hundley, Songtao Liu, Joao Ac Lima, David A Bluemke
Background: Cardiac Magnetic Resonance is in need of a simple and robust method for diastolic function assessment that can be done with routine protocol sequences. Objective: To develop and validate a three-dimensional (3D) model-based volumetric assessment of diastolic function using cardiac magnetic resonance (CMR) imaging and compare the results obtained with the model with those obtained by echocardiography. Methods: The study participants provided written informed consent and were included if having undergone both echocardiography and cine steady-state free precession (SSFP) CMR on the same day...
2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28552513/chemically-characterized-mentha-cardiaca-l-essential-oil-as-plant-based-preservative-in-view-of-efficacy-against-biodeteriorating-fungi-of-dry-fruits-aflatoxin-secretion-lipid-peroxidation-and-safety-profile-assessment
#20
Abhishek Kumar Dwivedy, Bhanu Prakash, Chandan Singh Chanotiya, Deepa Bisht, Nawal Kishore Dubey
The study reports Mentha cardiaca essential oil (EO) as plant based preservative against fungal and aflatoxin contamination of stored dry fruits. Mycoflora analysis of the dry fruits revealed Aspergillus favus LHP-PV-1 as the most aflatoxigenic isolate with highest Aflatoxin B1 content. M. cardiaca EO showed broad fungitoxic spectrum inhibiting the tested moulds contaminating dry fruits. It's minimum inhibitory concentration (MIC), minimum aflatoxin inhibitory concentration (MAIC) and minimum fungicidal concentration (MFC) against A...
May 24, 2017: Food and Chemical Toxicology
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