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Signed Esperanza Prieto Bohórquez, Javier Oswaldo Rodríguez Velásquez, Catalina Correa Herrera, Juan Mauricio Pardo Oviedo, Javier Ardila
Introducción: una ley exponencial se ha hallado para los sistemas dinámicos caóticos cardiacos, logrando cuantificar las diferencias entre dinámicas cardiacas normales y  patológicas.Metodología: Se analizaron 120 registros electrocardiográficos, 40 correspondían a sujetos dentro de los límites de normalidad y 80 con diferentes patologías. Para cada holter se analizaron los atractores generados con los datos durante 18 horas y durante toda la dinámica. Se calculó la dimensión fractal del atractor y su ocupación espacial...
March 23, 2018: Revista de la Facultad de Ciencias Médicas
Gaston Oscar Camino Willhuber, Gustavo Guzman Mentesana, Alejandra Baez, Silvina Lo Presti, Carolina Bazán, Mariana Strauss, Ricardo Fretes, Patricia Adriana Paglini-Oliva, Hector Walter Rivarola
 ResumenIntroducción: la actividad mitocondrial es esencial para el músculo cardíaco y esquelético. La relación entre la disfunción mitocondrial y diferentes condiciones cardiovasculares ha sido bien descrita. El tratamiento farmacológico de la insuficiencia cardíaca implica diferentes medicamentos como: inhibidores de la enzima convertidora de la angiotensina, bloqueadores B-adrenérgicos, glucósidos digitálicos y diuréticos. Los beneficios clínicos del tratamiento son claros, sin embargo, el papel de estos fármacos en el metabolismo mitocondrial no esta bien establecido...
September 8, 2017: Revista de la Facultad de Ciencias Médicas
Haichong Wu, Ailing Dai, Xingxing Chen, Xiaoyan Yang, Xiaohua Li, Cuiqin Huang, Kangfeng Jiang, Ganzhen Deng
Endometritis is the inflammation of the endometrium that is associated with lower conception rates, increased intervals from calving to first service, and more culls for failure to conceive, which leads to serious economic losses in the dairy industry. Leonurine, a natural active compound of Leonurus cardiaca, has been proved to possess various biological activities. However, there is still no study about its anti-inflammatory effects on LPS-induced endometritis. The present study aimed to demonstrate the underlying mechanism responsible for the anti-inflammatory effects of leonurine on LPS induced endometritis in mice and in bovine endometrial epithelial cells (bEECs)...
June 4, 2018: International Immunopharmacology
Rocío Alcántara-Hernández, Aurelio Hernández-Méndez
Adrenaline and noradrenaline bind to membrane receptors of the superfamily of G protein-coupled receptors (GPCR) in target cells, where they modulate physiological responses such as metabolism, vasoconstriction, vasodilation and proliferation. Alteration in their function is associated with conditions such as hypertension, benign prostatic hyperplasia and cardiac hypertrophy. In response to adrenaline, receptors form signaling complexes, which enables adrenergic action to be specific, rapid and efficient. These signaling complexes or signalosomes are composed of kinases, phosphatases, and adapter and scaffold proteins, which together modulate the receptor function...
2018: Gaceta Médica de México
Marcela Nouzova, Kayvan Etebari, Fernando G Noriega, Sassan Asgari
The corpora allata (CA) are a pair of endocrine glands with neural connections to the brain and close association with another neuroendocrine organ, the corpora cardiaca (CC). The CA from adult female Aedes aegypti mosquitoes synthesize fluctuating levels of juvenile hormone (JH), which have been linked to the ovarian development and are influenced by nutritional signals. In this study, we investigated the potential involvement of microRNAs (miRNAs), a type of small non-coding RNAs, in the regulation of gene expression in CA-CC complexes during mosquito reproductive development, at stages with distinct JH biosynthesis patterns...
May 2018: Insect Biochemistry and Molecular Biology
Bulent Gorenek, Giuseppe Boriani, Gheorge-Andrei Dan, Laurent Fauchier, Guilherme Fenelon, He Huang, Gulmira Kudaiberdieva, Gregory Y H Lip, Rajiv Mahajan, Tatjana Potpara, Juan David Ramirez, Marc A Vos, Francisco Marin
Endocrine disorders are associated with various tachyarrhythmias, including atrial fibrillation (AF), ventricular tachycardia (VT), ventricular fibrillation (VF), and bradyarrhythmias. Along with underlying arrhythmia substrate, electrolyte disturbances, glucose, and hormone levels, accompanying endocrine disorders contribute to development of arrhythmia. Arrhythmias may be life-threatening, facilitate cardiogenic shock development and increase mortality. The knowledge on the incidence of tachy- and bradyarrhythmias, clinical and prognostic significance as well as their management is limited; it is represented in observational studies and mostly in case reports on management of challenging cases...
March 16, 2018: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
Joana Pereira, Ana Ribeiro, João Ferreira-Coimbra, Isaac Barroso, João-Tiago Guimarães, Paulo Bettencourt, Patrícia Lourenço
BACKGROUND: Heart Failure (HF) is a low grade inflammatory condition. High sensitivity C-reactive protein (hsCRP) is an established marker of inflammation. A cut-off value of hsCRP beyond which an infection should be sought has never been studied in HF. We aimed to determine the best hsCRP cut-off for infection prediction in acute HF. METHODS: We analyzed patients included in an acute HF registry - EDIFICA (Estratificação de Doentes com InsuFIciência Cardíaca Aguda)...
February 27, 2018: BMC Cardiovascular Disorders
Alessandro Mantovani, 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 prognostic impact of hyperuricemia on long-term clinical outcomes in patients with chronic heart failure (HF) has been investigated in observational registries and clinical trials, but the results have been often inconclusive. We examined the prognostic impact of elevated serum uric acid levels on long-term clinical outcomes in the GISSI-HF (Gruppo Italiano per lo Studio della Sopravvivenza nella Insufficienza Cardiaca-Heart Failure) trial. METHODS: We assessed the rates of all-cause death, cardiovascular death, cardiovascular hospitalization and the composite of all-cause death or cardiovascular hospitalization over a median follow-up of 3...
February 22, 2018: Metabolism: Clinical and Experimental
Max Diesner, Aurore Gallot, Hellena Binz, Cyril Gaertner, Simon Vitecek, Jörg Kahnt, Joachim Schachtner, Emmanuelle Jacquin-Joly, Christophe Gadenne
In many insects, mating induces drastic changes in male and female responses to sex pheromones or host-plant odors. In the male moth Agrotis ipsilon, mating induces a transient inhibition of behavioral and neuronal responses to the female sex pheromone. As neuropeptides and peptide hormones regulate most behavioral processes, we hypothesize that they could be involved in this mating-dependent olfactory plasticity. Here we used next-generation RNA sequencing and a combination of liquid chromatography, matrix assisted laser desorption ionization time-of-flight (MALDI-TOF) mass spectrometry, and direct tissue profiling to analyze the transcriptome and peptidome of different brain compartments in virgin and mated males and females of A...
April 6, 2018: Journal of Proteome Research
Yuya Ohhara, Satoru Kobayashi, Kimiko Yamakawa-Kobayashi, Naoki Yamanaka
Holometabolous insects undergo metamorphosis to reorganize their behavioral and morphological features into adult-specific ones. In the central nervous system (CNS), some larval neurons undergo programmed cell death, whereas others go through remodeling of axonal and dendritic arbors to support functions of re-established adult organs. Although there are multiple neuropeptides that have stage-specific roles in holometabolous insects, the reorganization pattern of the entire neuropeptidergic system through metamorphosis still remains largely unclear...
June 1, 2018: Journal of Comparative Neurology
Yi Jun Zhou, Keisuke Fukumura, Shinji Nagata
Adipokinetic hormone (AKH) regulates energy homeostasis in insects by mobilizing lipid and carbohydrate from the fat body. Here, using RNA sequencing data, we identified cDNAs encoding AKH (GbAKH) and its highly homologous hormone AKH/corazonin-related peptide (GbACP) in the corpora cardiaca of the two-spotted cricket, Gryllus bimaculatus. RT-PCR revealed that GbAKH and GbACP are predominantly expressed in the corpora cardiaca and corpora allata, respectively. Phylogenetic analysis confirmed that the identified GbAKH and GbACP belong to the clades containing other AKHs and ACPs, respectively...
February 2018: Bioscience, Biotechnology, and Biochemistry
Gregory Y H Lip, Jean Philippe Collet, Raffaele de Caterina, Laurent Fauchier, Deirdre A Lane, Torben B Larsen, Francisco Marin, Joao Morais, Calambur Narasimhan, Brian Olshansky, Luc Pierard, Tatjana Potpara, Nizal Sarrafzadegan, Karen Sliwa, Gonzalo Varela, Gemma Vilahur, Thomas Weiss, Giuseppe Boriani, Bianca Rocca
Management strategies for patients with atrial fibrillation (AF) in association with valvular heart disease (VHD) have been less informed by randomized trials, which have largely focused on ‘non-valvular AF’ patients. Thromboembolic risk also varies according to valve lesion and may also be associated with CHA2DS2-VASc score risk factor components, rather than only the valve disease being causal. Given the need to provide expert recommendations for professionals participating in the care of patients presenting with AF and associated VHD, a task force was convened by the European Heart Rhythm Association (EHRA) and European Society of Cardiology (ESC) Working Group (WG) on Thrombosis, with representation from the ESC WG on Valvular Heart Disease, Heart Rhythm Society (HRS), Asia Pacific Heart Rhythm Society (APHRS), South African Heart (SA Heart) Association and Sociedad Latinoamericana de Estimulación Cardíaca y Electrofisiología (SOLEACE) with the remit to comprehensively review the published evidence, and to produce a consensus document on the management of patients with AF and associated VHD, with up-to-date consensus statements for clinical practice for different forms of VHD, based on the principles of evidence-based medicine...
December 2017: Thrombosis and Haemostasis
Shaojian Ji, Amir Fattahi, Nathalie Raffel, Inge Hoffmann, Matthias W Beckmann, Ralf Dittrich, Michael Schrauder
BACKGROUND: Little information is available concerning antioxidant effects of plant teas (water boiled) which are used more commonly in traditional Chinese medicine than other extracts. Thus, we addressed this issue by evaluating the ability of teas from four different plants with therapeutic potential on gynecological diseases. METHODS: The aqueous extracts of Semen persicae, Leonurus cardiaca, Hedyotis diffusa, and Curcuma zedoaria rhizome were prepared and then their effects on copper-induced low-density lipoprotein cholesterol (LDL-C) oxidation were evaluated by spectrophotometric method...
November 25, 2017: European Journal of Medical Research
Álvaro Flamarique-Pascual, Eduardo Esteban-Zubero, Francisco José Ruiz-Ruiz, Fernando Ruiz-Laiglesia
Acute heart failure (HF) is a prevalent disease with important socio-economic repercussions. Due to the aging of population, these values will increase in the coming years, so it may be useful to the implementation of intervention programs in these patients to decrease morbidity and mortality. A quasi-experimental prospective study (n = 262) of patients admitted at the Internal Medicine Department of the Hospital Clínico Universitario Lozano Blesa, in Zaragoza, Spain, diagnosed of HF between November 2013 and October 2014 (both dates inclusive) (n = 108) followed up for 1 year was performed...
2017: Gaceta Médica de México
Gregory Y H Lip, Jean Philippe Collet, Raffaele de Caterina, Laurent Fauchier, Deirdre A Lane, Torben B Larsen, Francisco Marin, Joao Morais, Calambur Narasimhan, Brian Olshansky, Luc Pierard, Tatjana Potpara, Nizal Sarrafzadegan, Karen Sliwa, Gonzalo Varela, Gemma Vilahur, Thomas Weiss, Giuseppe Boriani, Bianca Rocca
Atrial fibrillation (AF) is a major worldwide public health problem, and AF in association with valvular heart disease (VHD) is also common. However, management strategies for this group of patients have been less informed by randomized trials, which have largely focused on 'non-valvular AF' patients. Thrombo-embolic risk also varies according to valve lesion and may also be associated with CHA2DS2VASc score risk factor components, rather than only the valve disease being causal. Given marked heterogeneity in the definition of valvular and non-valvular AF and variable management strategies, including non-vitamin K antagonist oral anticoagulants (NOACs) in patients with VHD other than prosthetic heart valves or haemodynamically significant mitral valve disease, there is a need to provide expert recommendations for professionals participating in the care of patients presenting with AF and associated VHD...
November 1, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
Georges H Mairesse, Patrick Moran, Isabelle C Van Gelder, Christian Elsner, Marten Rosenqvist, Jonathan Mant, Amitava Banerjee, Bulent Gorenek, Johannes Brachmann, Niraj Varma, Gustavo Glotz de Lima, Jonathan Kalman, Neree Claes, Trudie Lobban, Deirdre Lane, Gregory Y H Lip, Giuseppe Boriani
No abstract text is available yet for this article.
October 1, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
Julia Ramírez, Michele Orini, Ana Mincholé, Violeta Monasterio, Iwona Cygankiewicz, Antonio Bayés de Luna, Juan Pablo Martínez, Pablo Laguna, Esther Pueyo
BACKGROUND: Sudden cardiac death (SCD) and pump failure death (PFD) are common endpoints in chronic heart failure (CHF) patients, but prevention strategies are different. Currently used tools to specifically predict these endpoints are limited. We developed risk models to specifically assess SCD and PFD risk in CHF by combining ECG markers and clinical variables. METHODS: The relation of clinical and ECG markers with SCD and PFD risk was assessed in 597 patients enrolled in the MUSIC (MUerte Súbita en Insuficiencia Cardiaca) study...
2017: PloS One
Christian R Mejia, Araseli Verastegui-Díaz, Dante M Quiñones-Laveriano, Germán Aranzabal-Alegría, Virgilio E Failoc-Rojas
Aim: To determine the frequency of physical activity and its association with chronic diseases in the elderly in eleven cities of Peru. Methods: A cross-sectional study of secondary data was conducted; the dependent variable was not the realization of physical activity, chronic disease and other physio-anthropometric variables were independent variables. For bivariate and multivariate analysis generalized linear models were used. A confidence level of 95% and p < 0...
2017: Gaceta Médica de México
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