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https://www.readbyqxmd.com/read/28340026/high-rate-of-subcutaneous-implantable-cardioverter-defibrillator-sensing-screening-failure-in-patients-with-brugada-syndrome-a-comparison-with-other-inherited-primary-arrhythmia-syndromes
#1
Giulio Conte, Mihoko Kawabata, Carlo de Asmundis, Erika Taravelli, Francesco Petracca, Diego Ruggiero, Maria Luce Caputo, François Regoli, Gian-Battista Chierchia, Alessandra Chiodini, Alessandro Del Bufalo, Tiziano Moccetti, Masahiko Goya, Kenzo Hirao, Alessandro Vicentini, Gaetano M De Ferrari, Pedro Brugada, Angelo Auricchio
Aims: Subcutaneous implantable cardioverter-defibrillator (S-ICD) can avoid important complications associated with transvenous leads in patients with inherited primary arrhythmia syndromes, who do not need pacing therapy. Few data are available on the percentage of patients with inherited arrhythmia syndromes eligible for S-ICD implantation. Aim of this study was to analyse the eligibility for S-ICD in a series of patients with Brugada syndrome (BrS), and to compare it with patients with other channelopathies...
March 7, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28337984/lipid-dependent-conformational-dynamics-underlie-the-functional-versatility-of-t-cell-receptor
#2
Xingdong Guo, Chengsong Yan, Hua Li, Wenmao Huang, Xiaoshan Shi, Min Huang, Yingfang Wang, Weiling Pan, Mingjun Cai, Lunyi Li, Wei Wu, Yibing Bai, Chi Zhang, Zhijun Liu, Xinyan Wang, Xiaohui F Zhang, Chun Tang, Hongda Wang, Wanli Liu, Bo Ouyang, Catherine C Wong, Yi Cao, Chenqi Xu
T-cell receptor-CD3 complex (TCR) is a versatile signaling machine that can initiate antigen-specific immune responses based on various biochemical changes of CD3 cytoplasmic domains, but the underlying structural basis remains elusive. Here we developed biophysical approaches to study the conformational dynamics of CD3ε cytoplasmic domain (CD3εCD). At the single-molecule level, we found that CD3εCD could have multiple conformational states with different openness of three functional motifs, i.e., ITAM, BRS and PRS...
March 24, 2017: Cell Research
https://www.readbyqxmd.com/read/28326201/hyperkalemia-induced-brugada-phenocopy-a-rare-ecg-manifestation
#3
Muhammad Ameen, Ghulam Akbar, Naeem Abbas, Ghazi Mirrani
Brugada syndrome (BrS) is an inherited disorder of cardiac ion channels characterized by peculiar ECG findings predisposing individuals to ventricular arrhythmias, syncope, and sudden cardiac death (SCD). Various electrolyte disturbances and ion channels blocking drugs could also provoke BrS ECG findings without genetic BrS. Clinical differentiation and recognition are essential for guiding the legitimate action. Hyperkalemia is well known to cause a wide variety of ECG manifestations. Severe hyperkalemia can even cause life threatening ventricular arrhythmias and cardiac conduction abnormalities...
2017: Case Reports in Cardiology
https://www.readbyqxmd.com/read/28324017/a-novel-selective-bombesin-receptor-subtype-3-agonist-promotes-weight-loss-in-male-diet-induced-obese-rats-with-circadian-rhythm-change
#4
Yasunori Nio, Natsu Hotta, Minoru Maruyama, Kenichi Hamagami, Toshimi Nagi, Masaaki Funata, Junichi Sakamoto, Masanori Nakakariya, Nobuyuki Amano, Tomohiro Okawa, Yasuyoshi Arikawa, Shinobu Sasaki, Shoki Okuda, Shizuo Kasai, Yugo Habata, Yasutaka Nagisa
Bombesin receptor subtype 3 (BRS-3) is an orphan G-protein-coupled receptor. Based on the obese phenotype of male BRS-3-deficient mice, BRS-3 has been considered an attractive target for obesity treatment. Here, we developed a novel selective BRS-3 agonist (Compound-A) and evaluated its anti-obesity effects. Compound-A showed anorectic effects and enhanced energy expenditure in diet-induced obese (DIO)-F344 rats. Moreover, repeated oral administration of Compound-A for 7 days resulted in a significant body weight reduction in DIO-F344 rats...
March 16, 2017: Endocrinology
https://www.readbyqxmd.com/read/28321340/right-ventricular-compression-mimicking-brugada-like-electrocardiogram-in-a-patient-with-recurrent-pectus-excavatum
#5
Jinhee Ahn, Jong-Il Choi, Jaemin Shim, Sung Ho Lee, Young-Hoon Kim
Pectus excavatum (PE), the most common skeletal anomaly of chest wall, sometimes requires a surgical correction but recurrent PE is not uncommon. PE usually has a benign course; however, this chest deformity may be associated with symptomatic tachyarrhythmias due to mechanical compression. We report a case of a patient with recurrent PE after surgical correction presenting with palpitation and electrocardiogram (ECG) showing ST-segment elevation on the right precordial leads, which could be mistaken for a Brugada syndrome (BrS)...
2017: Case Reports in Cardiology
https://www.readbyqxmd.com/read/28318254/phosphate-fertilizer-and-growing-environment-change-the-phytochemicals-oil-quality-and-nutritional-composition-of-roundup-ready-genetically-modified-and-conventional-soybean
#6
Tatiane Scilewski da Costa Zanatta, Roberta Manica-Berto, Cristiano Dietrich Ferreira, Michele Maciel Crizel Cardozo, Cesar Valmor Rombaldi, Rui Carlos Zambiazi, Álvaro Renato Guerra Dias
Phosphorus (P) intake, genotype, and growth environment in soybean cultivation can affect the composition of the soybean. This experiment was conducted in two locations (microregions I and II) using a randomized complete block design, including conventional soybean (BRS Sambaíba) and genetically modified (GM) [Msoy 9144 Roundup Ready (RR)] cultivars and varying doses of phosphorus fertilizer (0, 60, 120, and 240 kg/ha P2O5). Soybeans were evaluated for chemical composition, total phenols, phytic acid content, individual isoflavone content, antioxidant activity, oil quality, fatty acid profile, total carotenoid content, and individual tocopherol contents...
March 24, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28314184/how-does-the-body-representation-system-develop-in-the-human-brain
#7
Aurelie Fontan, Fabien Cignetti, Bruno Nazarian, Jean-Luc Anton, Marianne Vaugoyeau, Christine Assaiante
Exploration of the body representation system (BRS) from kinaesthetic illusions in fMRI has revealed a complex network composed of sensorimotor and frontoparietal components. Here, we evaluated the degree of maturity of this network in children aged 7-11 years, and the extent to which structural factors account for network differences with adults. Brain activation following tendon vibration at 100Hz ('illusion') and 30Hz ('no illusion') were analysed using the two-stage random effects model, with or without white and grey matter covariates...
February 28, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28314132/rhizobial-symbiosis-alleviates-polychlorinated-biphenyls-induced-systematic-oxidative-stress-via-brassinosteroids-signaling-in-alfalfa
#8
Xiaomi Wang, Ying Teng, Ning Zhang, Peter Christie, Zhengao Li, Yongming Luo, Jun Wang
The role of symbiotic rhizobia in the alleviation of polychlorinated biphenyl (PCB)-induced phytotoxicity in alfalfa and the brassinosteroid (BR) hormone signaling involved were investigated during phytoremediation. The association between alfalfa and Sinorhizobium meliloti was adopted as a remediation model. Phytotoxicity due to PCB 77 (3,3',4,4'-tetrachlorobiphenyl) exerted adverse impacts on plant performance (biomass accumulation and photosynthesis) and elicited cellular oxidative stress (overproduction of reactive oxygen species, lipid peroxidation, and cell necrosis) which was largely attenuated by pre-inoculation with S...
March 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28303144/the-cytochrome-p450-gene-cscyp85a1-is-a-putative-candidate-for-super-compact-1-scp-1-plant-architecture-mutation-in-cucumber-cucumis-sativus-l
#9
Hui Wang, Wanqing Li, Yaguang Qin, Yupeng Pan, Xiaofeng Wang, Yiqun Weng, Peng Chen, Yuhong Li
The dwarf or compact plant architecture is an important trait in plant breeding. A number of genes controlling plant height have been cloned and functionally characterized which often involve in biosynthesis or signaling of plant hormones such as brassinosteroids (BRs). No genes for plant height or vine length have been cloned in cucurbit crops (family Cucurbitaceae). From an EMS-induced mutagenesis population, we identified a super compact (SCP) mutant C257 which was extremely dwarf due to practically no internode elongation...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28299676/bioresorbable-scaffolds-for-coronary-stenosis-when-and-how-based-upon-current-studies
#10
REVIEW
Alexandre Abizaid, J Ribamar Costa
PURPOSE OF REVIEW: First-generation bioresorbable scaffolds (BRS), largely represented by the poly-l-lactic acid (PLLA) ABSORB (Abbott Vascular, Temecula, Illinois, US), have demonstrated, in low to moderate lesion complexity, similar efficacy to current generation metallic drug-eluting stents. However, a trend toward more device thrombosis has been observed, especially when the scaffolds are used in off-label situations. In this review, we address the most relevant drawbacks of these devices and, based on the available scientific data, we visit the scenarios where there is more uncertainty about their indication, trying to identify the lesions/patients to whom this technology should be voided at its current stage of development...
March 2017: Current Cardiology Reports
https://www.readbyqxmd.com/read/28296645/extraction-of-respiratory-signals-from-the-electrocardiogram-and-photoplethysmogram-technical-and-physiological-determinants
#11
Peter H Charlton, Timothy Bonnici, Lionel Tarassenko, Jordi Alastruey, David Clifton, Richard Beale, Peter Watkinson
Breathing rate (BR) can be estimated by extracting respiratory signals from the electrocardiogram (ECG) or photoplethysmogram (PPG). The extracted respiratory signals may be influenced by several technical and physiological factors. In this study, our aim was to determine how technical and physiological factors influence the quality of respiratory signals. Using a variety of techniques 15 respiratory signals were extracted from the ECG, and 11 from PPG signals collected from 57 healthy subjects. The quality of each respiratory signal was assessed by calculating its correlation with a reference oral-nasal pressure respiratory signal using Pearson's correlation coefficient...
March 15, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28285020/uplc-qtof-ms-ms-based-phenolic-profile-and-their-biosynthetic-enzyme-activity-used-to-discriminate-between-cashew-apple-anacardium-occidentale-l-maturation-stages
#12
Aline G Cunha, Edy S Brito, Carlos F H Moura, Paulo R V Ribeiro, Maria Raquel A Miranda
Cashew immature and ripe peduncles (Anacardium occidentale L.) from orange- and red-colored clones CCP 76 and BRS 189, respectively, were prepared as juice or fibrous fraction and submitted to UPLC-MS analyses, while the soluble fraction was also submitted to enzymatic evaluation. Cinnamoyl glucoside was present in ripe juice samples from both cashew clones, while monogalloyl diglucoside and digalloyl glucoside were present in immature juice samples from both cashew clones. Four compounds were found at immature fiber of both clones, anacardic acids (1, 2, 3) and GA19...
February 21, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28282853/synthesis-of-five-known-brassinosteroid-analogs-from-hyodeoxycholic-acid-and-their-activities-as-plant-growth-regulators
#13
María Isabel Duran, Cesar González, Alison Acosta, Andrés F Olea, Katy Díaz, Luis Espinoza
Brassinosteroids (BRs) are plant hormones that promote growth in different plant organs and tissues. The structural requirements that these compounds should possess to exhibit this biological activity have been studied. In this work, a series of known BR analogs 5-15, were synthesized starting from hyodeoxycholic acid 4, and maintaining the alkyl side chain as cholic acid or its methyl ester. The growth-promoting effects of brassinolide (1) and synthesized analogs were evaluated by using the rice lamina inclination assay at concentrations ranging from 1 × 10(-8)-1 × 10(-6) M...
March 8, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28280039/pathway-specific-aggregate-biomarker-risk-score-is-associated-with-burden-of-coronary-artery-disease-and-predicts-near-term-risk-of-myocardial-infarction-and-death
#14
Nima Ghasemzedah, Salim S Hayek, Yi-An Ko, Danny J Eapen, Riyaz S Patel, Pankaj Manocha, Hatem Al Kassem, Mohamed Khayata, Emir Veledar, Dimitrios Kremastinos, Christian W Thorball, Tomasz Pielak, Sergey Sikora, A Maziar Zafari, Stamatios Lerakis, Laurence Sperling, Viola Vaccarino, Stephen E Epstein, Arshed A Quyyumi
BACKGROUND: Inflammation, coagulation, and cell stress contribute to atherosclerosis and its adverse events. A biomarker risk score (BRS) based on the circulating levels of biomarkers C-reactive protein, fibrin degradation products, and heat shock protein-70 representing these 3 pathways was a strong predictor of future outcomes. We investigated whether soluble urokinase plasminogen activator receptor (suPAR), a marker of immune activation, is predictive of outcomes independent of the aforementioned markers and whether its addition to a 3-BRS improves risk reclassification...
March 2017: Circulation. Cardiovascular Quality and Outcomes
https://www.readbyqxmd.com/read/28277582/experimental-investigation-of-the-reaction-of-helium-ions-with-dimethyl-ether-stereodynamics-of-the-dissociative-charge-exchange-process
#15
Andrea Cernuto, Paolo Tosi, Luca Matteo Martini, Fernando Pirani, Daniela Ascenzi
The fate of dimethyl ether (DME, CH3OCH3) in collisions with He(+) ions is of high relevance for astrochemical models aimed at reproducing the abundances of complex organic molecules in the interstellar medium. Here we report an investigation on the reaction of He(+) ions with DME carried out using a Guided Ion Beam Mass Spectrometer (GIB-MS), which allows the measurement of reactive cross-sections and branching ratios (BRs) as a function of the collision energy. We obtain insights into the dissociative charge (electron) exchange mechanism by investigating the nature of the non-adiabatic transitions between the relevant potential energy surfaces (PESs) in an improved Landau-Zener approach...
March 9, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28275942/bioresorbable-polymers-and-stent-devices
#16
REVIEW
Payam Dehghani
Percutaneous coronary interventions will never become obsolete, as evolution is inherent to interventional cardiology. Current drug-eluting platforms have appreciably improved their safety and efficacy profiles in different clinical settings compared to first-generation devices such that it is difficult to consider other alternatives. However, there is definite biological plausibility to consider devices with bioabsorbable polymers and/or scaffolds. It is also an undeniable fact that many patients, based on variety of belief systems, would prefer not to have a permanently implanted device...
February 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28274576/long-term-follow-up-of-probands-with-brugada-syndrome
#17
Carlo de Asmundis, Giacomo Mugnai, Gian-Battista Chierchia, Juan Sieira, Giulio Conte, Moises Rodriguez-Mañero, Gudrun Pappaert, Jens Czapla, Jan Nijs, Mark La Meir, Ruben Casado, Erwin Ströker, Valentina De Regibus, Pedro Brugada
This study analyzes the natural history of a large cohort of probands with Brugada syndrome (BrS) to assess the predictive value of different clinical and electrocardiographic parameters for the development of ventricular fibrillation (VF) or sudden cardiac death (SCD) during a long-term follow-up. Baseline characteristics of 289 consecutive probands (203 men; mean age 45 ± 16 years) with a Brugada type 1 electrocardiogram were analyzed. After a mean follow-up of 10.1 ± 4.6 years, 29 malignant arrhythmias occurred...
February 10, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28268875/a-model-based-method-to-measure-baroreflex-sensitivity
#18
Yu Meng, Zhipei Huang, Jiangkang Wu, Xinxia Cai
This paper proposes a model-based method to quantitatively measure baroreflex sensitivity in autonomic nervous regulation of cardiovascular system. The method measures the continuous blood pressure and heart rate in orthostatic scenario, models dynamics of the baroreflex firing rate, solves parameters by optimization of measured blood pressure and heart rate variations. With this model, we can get the baroreflx sensitivity (BRS) inner indicators to evaluate the status of the autonomic nervous regulation system...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28258966/overexpression-of-populus-trichocarpa-cyp85a3-promotes-growth-and-biomass-production-in-transgenic-trees
#19
Yan-Li Jin, Ren-Jie Tang, Hai-Hai Wang, Chun-Mei Jiang, Yan Bao, Yang Yang, Mei-Xia Liang, Fanjing Kong, Bei Li, Hong-Xia Zhang
Brassinosteroids (BRs) are essential hormones that play crucial roles in plant growth, reproduction and response to abiotic and biotic stress. In Arabidopsis, AtCYP85A2 works as a bifunctional cytochrome P450 monooxygenase to catalyze the conversion of castasterone (CS) to brassinolide (BL), a final rate-limiting step in the BR biosynthetic pathway. Here, we report the functional characterizations of PtCYP85A3, one of the three AtCYP85A2 homologous genes from Populus trichocarpa. PtCYP85A3 shares the highest similarity with AtCYP85A2 and can rescue the retarded-growth phenotype of the Arabidopsis cyp85a2-2 and tomato d(x) mutants...
March 4, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28250679/eclectic-mixed-model-method-for-upper-extremity-functional-recovery-in-stroke-rehabilitation-a-pilot-study
#20
K Vijaya Kumar, Abraham M Joshua, Rakshith Kedambadi, P Prasanna Mithra
BACKGROUND: Eclectic treatment method is a flexible approach that uses techniques drawn from various schools of thought involving several treatment methods and allows the therapist to adapt to each client's individual needs. Wider application for eclectic approach is however limited in stroke rehabilitation. AIM: The objective is to find out whether eclectic approach improves upper extremity (UE) functional recovery in acute stroke rehabilitation. METHODOLOGY: Twenty-five postacute unilateral supratentorial stroke subjects recruited from tertiary care hospitals recovered with Stage 2-5 in Brunnstorm stage of UE motor recovery (BRS-UE) underwent 45 min of eclectic approach for UE every day involving seven different treatment methods (5 min for each method) for 6 days consecutively...
January 2017: Journal of Natural Science, Biology, and Medicine
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