keyword
MENU ▼
Read by QxMD icon Read
search

Rhythm

keyword
https://www.readbyqxmd.com/read/28931163/influence-of-quercetin-in-the-temporal-regulation-of-redox-homeostasis-in-drosophila-melanogaster
#1
Perumal Subramanian, Kanimozhi Kaliyamoorthy, Jaime Jacqueline Jayapalan, Puteri Shafinaz Abdul-Rahman, Onn Haji Hashim
Numerous biological processes are governed by the biological clock. Studies using Drosophila melanogaster (L.) are valuable that could be of importance for their effective applications on rodent studies. In this study, the beneficial role of quercetin (a flavonoid) on H2O2 induced stress in D. melanogaster was investigated. D. melanogaster flies were divided into four groups (group I - control, group II - H2O2 (acute exposure), group III - quercetin, and group IV - quercetin + H2O2 treated). Negative geotaxis assay, oxidative stress indicators (protein carbonyls, thiobarbituric reactive substances [TBARS]), and antioxidants (superoxide dismutase [SOD], catalase [CAT], glutathione-S-transferase [GST], glutathione peroxidase, and reduced glutathione [GSH]) were measured at 4 h intervals over 24 h and temporal expression of heat shock protein-70 (Hsp70), Upd1 (homolog of IL-6 in Drosophila), and nitric oxide synthase (Nos) was analyzed by Western blotting...
January 1, 2017: Journal of Insect Science
https://www.readbyqxmd.com/read/28931072/high-prevalence-of-non-dipping-blood-pressure-and-vascular-stiffness-in-hiv-infected-south-africans-on-antiretrovirals
#2
M S Borkum, J M Heckmann, K Manning, J A Dave, N S Levitt, B L Rayner, N Wearne
BACKGROUND: HIV-infected individuals are at increased risk of tissue inflammation and accelerated vascular aging ('inflamm-aging'). Abnormal diurnal blood pressure (BP) rhythms such as non-dipping may contribute to an increased risk of cardiovascular and cerebrovascular events in HIV infected individuals. However, little data exists on ambulatory blood pressure (ABP) and measures of vascular stiffness in the black African HIV infected population. METHODS: This is a cross-sectional analysis of otherwise well, HIV infected outpatients on ART for >5 years...
2017: PloS One
https://www.readbyqxmd.com/read/28931039/abnormalities-in-substance-p-neurokinin-1-receptor-binding-in-key-brainstem-nuclei-in-sudden-infant-death-syndrome-related-to-prematurity-and-sex
#3
Fiona M Bright, Robert Vink, Roger W Byard, Jhodie R Duncan, Henry F Krous, David S Paterson
Sudden infant death syndrome (SIDS) involves failure of arousal to potentially life threatening events, including hypoxia, during sleep. While neuronal dysfunction and abnormalities in neurotransmitter systems within the medulla oblongata have been implicated, the specific pathways associated with autonomic and cardiorespiratory failure are unknown. The neuropeptide substance P (SP) and its tachykinin neurokinin-1 receptor (NK1R) have been shown to play an integral role in the modulation of homeostatic function in the medulla, including regulation of respiratory rhythm generation, integration of cardiovascular control, and modulation of the baroreceptor reflex and mediation of the chemoreceptor reflex in response to hypoxia...
2017: PloS One
https://www.readbyqxmd.com/read/28930912/reducing-elevated-heart-rates-in-patients-with-multiple-organ-dysfunction-syndrome-with-the-if-funny-channel-current-inhibitor-ivabradine
#4
Sebastian Nuding, Jochen Schröder, Peter Presek, Andreas Wienke, Ursula Müller-Werdan, Henning Ebelt, Karl Werdan
INTRODUCTION: A heart rate higher than 90 beats/min indicates an unfavorable prognosis for patients with multiple organ dysfunction syndrome (MODS). We sought to investigate the effect of the pacemaker current (If) inhibitor ivabradine on heart rate, hemodynamics, and disease severity among patients with MODS. MATERIAL AND METHODS: In this prospective, controlled, randomized, open-label, two-arm phase II trial, seventy patients with MODS, a sinus rhythm of at least 90 beats/min, and contraindications to β-blocker therapy were randomly assigned to receive the standard treatment ± ivabradine (5 mg twice daily) for 96 h via the enteral route...
September 19, 2017: Shock
https://www.readbyqxmd.com/read/28930523/the-evolving-concept-of-the-intrinsic-hippocampal-theta-gamma-oscillator
#5
Mauro Cataldi, Chiara Vigliotti
  Three main types of electrical oscillations are recorded from the hippocampus in vivo: theta (θ), gamma (γ) and sharp wave ripples with frequency bands of 4-12, 25-100 and 110-250 Hz, respectively. Theta activity is the more robust of them, and has important physiological roles because it is involved in spatial navigation, memory formation and memory retrieval. Classical lesion studies in vivo have suggested that the hippocampus passively follows the θ  rhythm generated in the septum by neurons that are synaptically connected with hippocampal neurons though septo-hippocampal connections...
January 1, 2018: Frontiers in Bioscience (Scholar Edition)
https://www.readbyqxmd.com/read/28929444/neurophysiological-approach-to-examining-knowledge-belief-in-the-prayer-of-an-untrained-person-a-case-study
#6
Mirjana Sovilj, Zoran Radičević, Ljiljana Jeličić, Miodrag Stokić, Vanja Nenadović, Miško Subotić
An adult female (22 years) of Christian orthodox religion was examined during the silent Lord's prayer, the most common, short prayer, with the aim of possible differentiation between belief and knowledge in her experience, analyzing the behavior of subgroups of theta and beta cerebral EEG rhythms, which occur through constant and occasional activation of cerebral regions. The participant was not trained in reading the prayer to herself or other people. EEG examination was performed by Nihon Kohden Corporation, EEG-1200-K Neurofax apparatus, in the monopolar longitudinal montage in the system of 10/20 electrodes aimed at determining the peak frequency value of each exploratory site...
September 19, 2017: Journal of Religion and Health
https://www.readbyqxmd.com/read/28928952/a-simple-method-to-measure-clock-bmal1-dna-binding-activity-in-tissue-and-cell-extracts
#7
Maud Gillessen, Pieter Bas Kwak, Alfred Tamayo
The proteins CLOCK and BMAL1 form a heterodimeric transcription factor essential to circadian rhythms in mammals.  Daily rhythms of CLOCK-BMAL1 DNA binding activity are known to oscillate with target gene expression in vivo. Here we present a highly sensitive assay that recapitulates native CLOCK-BMAL1 DNA binding rhythms from crude tissue extracts, which we call the Clock Protein-DNA Binding Assay (CPDBA). This method can detect less than 2-fold differences in DNA binding activity, and can deliver results in two hours or less using 10 microliters or less of crude extract, while requiring neither specialized equipment nor expensive probes...
2017: F1000Research
https://www.readbyqxmd.com/read/28928618/congenital-left-atrial-appendage-aneurysm-atypical-presentation
#8
Mehdi Bamous, Mahdi Aithoussa, Ayoub Abetti, Abdelatif Boulahya
Congenital left atrial appendage aneurysm is a rare condition caused by dysplasia of the atrial muscles. We report a case of a 14-year-old boy, with a 5-month history of cough and in sinus rhythm. Transthoracic echocardiography and computerized tomographic angiography confirmed the aneurysm of the left atrial appendage which was resected through median sternotomy on cardiopulmonary bypass. This case is presented not only for its rarity but also for its atypical clinical presentation.
September 2017: Annals of Pediatric Cardiology
https://www.readbyqxmd.com/read/28928461/time-dependent-effects-of-ipragliflozin-on-behaviour-and-energy-homeostasis-in-normal-and-type-2-diabetic-rats-continuous-glucose-telemetry-analysis
#9
Hiroyuki Iuchi, Masaya Sakamoto, Daisuke Matsutani, Hirofumi Suzuki, Yosuke Kayama, Norihiko Takeda, Susumu Minamisawa, Kazunori Utsunomiya
Sodium-glucose cotransporter 2 (SGLT2) inhibitors are oral antidiabetic drugs that promote urinary glucose excretion. Conversely, they cause behavioural changes, such as hyperphagia, that result in a positive energy balance. The relationship between energy homeostasis and SGLT2 inhibitors-induced behavioural changes remains unclear. Here we show that ipragliflozin, a SGLT2 inhibitor, time-dependently affects behaviour and enhances energy expenditure in normal and type 2 diabetic Goto-Kakizaki (GK) rats, using continuous glucose telemetry...
September 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28928175/integrated-management-of-atrial-fibrillation-including-tailoring-of-anticoagulation-in-primary-care-study-design-of-the-all-in-cluster-randomised-trial
#10
Carline J van den Dries, Ruud Oudega, Arif Elvan, Frans H Rutten, Sjef J C M van de Leur, Henk J G Bilo, Arno W Hoes, Karel G M Moons, Geert-Jan Geersing
INTRODUCTION: In our ageing society, we are at the merge of an expected epidemic of atrial fibrillation (AF). AF management requires an integrated approach, including rate or rhythm control, stroke prevention with anticoagulation and treatment of comorbidities such as heart failure or type 2 diabetes. As such, primary care seems to be the logical healthcare setting for the chronic management of patients with AF. However, primary care has not yet played a dominant role in AF management, which has been in fact more fragmented between different healthcare providers...
September 18, 2017: BMJ Open
https://www.readbyqxmd.com/read/28928046/new-directions-for-ambulatory-monitoring-following-2017-hrs-ishne-expert-consensus
#11
Emanuela T Locati
The main role of ambulatory electrocardiography (AECG) in clinical practice is to detect and characterize the behavior of cardiac electrical activity during ordinary daily life activities. Because certain rhythm abnormalities may be infrequent and paroxysmal, and may occur only during sleep or in association with mental, emotional, or exercise-induced perturbation in cardiac function, AECG needs to be recorded over a long period of time, originally lasting 24h and now expanding up to several weeks and even to months...
August 12, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28928045/the-electrocardiographic-triangular-qrs-st-t-waveform-pattern-in-patients-with-st-segment-elevation-myocardial-infarction-incidence-pathophysiology-and-clinical-implications
#12
Alberto Cipriani, Gianpiero D'Amico, Giulia Brunello, Martina Perazzolo Marra, Federico Migliore, Luisa Cacciavillani, Giuseppe Tarantini, Barbara Bauce, Sabino Iliceto, Domenico Corrado, Alessandro Zorzi
BACKGROUND: A specific ECG pattern of presentation of ST-segment elevation acute myocardial infarction (STEMI), characterized by "triangular QRS-ST-T waveform" (TW), has been associated with poor in-hospital prognosis but longitudinal data on its incidence and clinical impact are lacking. We prospectively evaluated the incidence and prognostic meaning of the TW pattern in a cohort of consecutive STEMI patients. METHODS: All STEMI patients who presented within 12h of symptoms onset and showed no complete bundle branch block or paced ventricular rhythm were included...
August 16, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28927239/tubulins-rhythms-and-cell-walls-in-poplar-leaves-it-s-all-in-the-timing
#13
Scott A Harding, Hao Hu, Batbayar Nyamdari, Liang-Jiao Xue, Radnaa Naran, Chung-Jui Tsai
Plant cell walls exhibit architectural and compositional changes throughout their development and in response to external cues. While tubulins are involved in cell wall biogenesis, much remains unknown about the scope of their involvement during the orchestration of this resource-demanding process. A transgenic approach coupled with cell wall compositional analysis, RNA-seq and mining of publicly available diurnal gene expression data was used to assess the involvement of tubulins in poplar leaf cell wall biogenesis...
September 12, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28927226/female-clock%C3%AE-19-%C3%AE-19-mice-are-protected-from-the-development-of-age-dependent-cardiomyopathy
#14
Faisal J Alibhai, Cristine J Reitz, Willem T Peppler, Poulami Basu, Paul Sheppard, Elena Choleris, Marica Bakovic, Tami A Martino
Aims: Circadian rhythms are important for healthy cardiovascular physiology and they are regulated by the molecular circadian mechanism. Previously, we showed that disruption of the circadian mechanism factor CLOCK in male Clock Δ19/Δ19 mice led to development of age-dependent cardiomyopathy. Here, we investigate the role of biological sex in protecting against heart disease in aging female Clock Δ19/Δ19 mice. Methods and results: Female Clock Δ19/Δ19 mice are protected from the development of cardiomyopathy with age, as heart structure and function are similar to 18 months of age versus female WT mice...
September 12, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28927190/outcomes-differ-by-first-documented-rhythm-after-witnessed-out-of-hospital-cardiac-arrest-in-children-an-observational-study-with-prospective-nationwide-population-based-cohort-database-in-japan
#15
Masahiko Hara, Kenichi Hayashi, Tetsuhisa Kitamura
Aims: To evaluate and compare outcomes and impacts of delay of time to cardiopulmonary resuscitation (CPR) by type of first documented rhythm in paediatric patients with out-of-hospital cardiac arrest (OHCA). Methods and results: We enrolled 3968 paediatric (aged <18 years) OHCA patients whose events were witnessed between 2005 and 2012 from a prospective nationwide population-based cohort database in Japan. We assessed and compared their neurologically favourable 1-month survival according to first documented rhythm: pulseless ventricular tachycardia/ventricular fibrillation (pVT/VF), pulseless electrical activity (PEA), or asystole...
January 1, 2017: European Heart Journal. Quality of Care & Clinical Outcomes
https://www.readbyqxmd.com/read/28926747/ictal-source-imaging-and-electroclinical-correlation-in-self-limited-epilepsy-with-centrotemporal-spikes
#16
Jørgen Alving, Martin Fabricius, Ivana Rosenzweig, Sándor Beniczky
PURPOSE: To elucidate the localization of ictal EEG activity, and correlate it to semiological features in self-limited epilepsy with centrotemporal spikes (formerly called "benign epilepsy with centrotemporal spikes"). METHODS: We have performed ictal electric source imaging, and we analysed electroclinical correlations in three patients with self-limited epilepsy with centrotemporal spikes. RESULTS: The source of the evolving rhythmic ictal activity (9...
September 14, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28926570/what-do-we-talk-about-when-we-talk-about-rhythm
#17
Jonas Obleser, Molly J Henry, Peter Lakatos
No abstract text is available yet for this article.
September 2017: PLoS Biology
https://www.readbyqxmd.com/read/28926563/dance-to-the-rhythm-cautiously-isolating-unique-indicators-of-oscillatory-entrainment
#18
Assaf Breska, Leon Y Deouell
No abstract text is available yet for this article.
September 2017: PLoS Biology
https://www.readbyqxmd.com/read/28926474/parasympathetic-activation-enhanced-by-slow-respiration-modulates-early-auditory-sensory-gating
#19
Atsushi Aoyama, Yu Shimura, Takao Ohmuta, Yohei Nomoto, Masashi Kawasumi
Sensory gating is a preattentional mechanism to filter irrelevant information from the environment. It is typically reflected as a suppression of the event-related P50 component for successive sounds in the auditory modality. Although stress-induced sympathetic activation has been reported to disrupt P50 suppression, little is known about the modulatory effect of parasympathetic activation on early auditory sensory gating. We determined the parasympathetic effect on the magnetic P50 (P50m) suppression by controlling the respiratory rhythm and recording data simultaneously with magnetoencephalography and electrocardiography, using three successive click sounds as stimulus and ten normal individuals as study participants...
September 18, 2017: Neuroreport
https://www.readbyqxmd.com/read/28926419/peduncular-hallucinosis-and-autonomic-dysfunction-in-anti-aquaporin-4-antibody-syndrome
#20
Renee Berry, Peter K Panegyres
Neuromyelitis optica is a rare, severe inflammatory demyelinating disease of the central nervous system, previously described as affecting only the optic nerve and spinal cord. Since the discovery of a highly specific autoantibody, anti-aquaporin-4, lesions are now recognized outside these regions. We report a man with severe, debilitating symptoms resulting from a symptomatic lesion within the diencephalon, manifesting with abnormal circadian rhythms, autonomic dysfunction, behavioral disturbance, and complex visual hallucinations...
September 2017: Cognitive and Behavioral Neurology: Official Journal of the Society for Behavioral and Cognitive Neurology
keyword
keyword
16204
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"