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https://www.readbyqxmd.com/read/28732009/effects-of-local-cardiac-denervation-on-cardiac-innervation-and-ventricular-arrhythmia-after-chronic-myocardial-infarction
#1
Xudong Liu, Lin Sun, Jugang Chen, Yingying Jin, Qing Liu, Zhongnan Xia, Liang Wang, Jingjie Li
BACKGROUND: Modulation of the autonomic nervous system (ANS) has already been demonstrated to display antiarrhythmic effects in patients and animals with MI. In this study, we investigated whether local cardiac denervation has any beneficial effects on ventricular electrical stability and cardiac function in the chronic phase of MI. METHODS: Twenty-one anesthetized dogs were randomly assigned into the sham-operated, MI and MI-ablation groups, respectively. Four weeks after local cardiac denervation, LSG stimulation was used to induce VPCs and VAs...
2017: PloS One
https://www.readbyqxmd.com/read/28732007/a-data-driven-modeling-approach-to-identify-disease-specific-multi-organ-networks-driving-physiological-dysregulation
#2
Warren D Anderson, Danielle DeCicco, James S Schwaber, Rajanikanth Vadigepalli
Multiple physiological systems interact throughout the development of a complex disease. Knowledge of the dynamics and connectivity of interactions across physiological systems could facilitate the prevention or mitigation of organ damage underlying complex diseases, many of which are currently refractory to available therapeutics (e.g., hypertension). We studied the regulatory interactions operating within and across organs throughout disease development by integrating in vivo analysis of gene expression dynamics with a reverse engineering approach to infer data-driven dynamic network models of multi-organ gene regulatory influences...
July 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28731818/the-adron-rm-instrument-onboard-the-exomars-rover
#3
I G Mitrofanov, M L Litvak, S Y Nikiforov, I Jun, Y I Bobrovnitsky, D V Golovin, A S Grebennikov, F S Fedosov, A S Kozyrev, D I Lisov, A V Malakhov, M I Mokrousov, A B Sanin, V N Shvetsov, G N Timoshenko, T M Tomilina, V I Tret'yakov, A A Vostrukhin
This overview presents the physical principles, design, measurement capabilities, and summary of planned operations of the autonomous detector of radiation of neutrons onboard rover at Mars (ADRON-RM) on the surface of Mars. ADRON-RM is a Russian project selected for the joint European Space Agency-Roscosmos ExoMars 2020 landing mission. A compact passive neutron spectrometer, ADRON-RM, was designed to study the abundance and distribution of water and neutron absorption elements (such as Cl, Fe, and others) in the martian subsurface along the path of the ExoMars rover...
June 2017: Astrobiology
https://www.readbyqxmd.com/read/28731559/association-between-anthropometric-measures-of-regional-fat-mass-and-heart-rate-variability-in-obese-women
#4
Marina Rastović, Biljana Srdić-Galić, Oto Barak, Edita Stokić
AIM: Impaired autonomic function could be the mechanism for the development of cardiometabolic diseases in obesity. Hence, simple anthropometric measures of overall and central obesity could be screening markers for autonomic imbalance. We analysed the relationship between heart rate variability (HRV) parameters and obesity indicators. METHODS: Sixty-three obese women underwent blood pressure, lipids and anthropometric measurements, body composition assessment, HOMA (homeostasis model assessment) index calculation and short-term HRV analysis...
February 2017: Nutrition & Dietetics: the Journal of the Dietitians Association of Australia
https://www.readbyqxmd.com/read/28730870/cardiac-autonomic-recovery-after-strength-exercise-in-lower-and-upper-limbs
#5
Naerton José Xavier Isidoro, Milana Drumond Ramos Santana, Vitor E Valenti, David M Garner, Luiz Carlos de Abreu
Introduction Strength exercises influence the cardiovascular system by promoting autonomic adjustments induced by the increased metabolic demand and consequent increase in local blood flow. However, it is unclear whether there are differences between upper and lower limbs. We aimedto evaluate recovery of cardiac autonomic modulation afterstrengthexercise in upper and lower limbs. Methods We analysed 29 healthy male subjects physically active but not professional athletes aged between 20 and 35 years old...
July 21, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28730673/autonomic-dysfunction-as-a-mechanism-of-intradialytic-blood-pressure-instability
#6
Tariq Shafi, Surekha Mullangi, Bernard G Jaar, Harry Silber
The autonomic nervous system (ANS) is the principal endogenous defense mechanism that maintains blood pressure in the setting of hypotension. Disruption of the ANS impairs this ability and can contribute to blood pressure instability, including hypotension and hypertension. In this narrative review, we provide an overview of the ANS and the consequences of its dysfunction in patients with end-stage kidney disease treated with dialysis. We also discuss possible mechanisms of this autonomic dysfunction that may need future investigation...
July 20, 2017: Seminars in Dialysis
https://www.readbyqxmd.com/read/28730437/design-and-crystallography-of-self-assembling-rna-nanostructures
#7
Mark A Boerneke, Thomas Hermann
Biological RNA architectures are composed of autonomously folding modules which can be tailored as building blocks for the construction of RNA nanostructures. Designed base pair interactions allow complex nano-objects to self-assemble from simple RNA motifs. X-ray crystallography plays an important role in both the design and analysis of such RNA nanostructures. Here, we describe methods for the design and X-ray crystallographic structure analysis of an RNA square and two different triangles, which self-assemble from short oligonucleotides and serve as a platform for building functional nano-sized nucleic acid architectures...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28730326/infectious-diseases-causing-autonomic-dysfunction
#8
REVIEW
Francisco Javier Carod Artal
OBJECTIVES: To review infectious diseases that may cause autonomic dysfunction. METHODS: Review of published papers indexed in medline/embase. RESULTS: Autonomic dysfunction has been reported in retrovirus (human immunodeficiency virus (HIV), human T-lymphotropic virus), herpes viruses, flavivirus, enterovirus 71 and lyssavirus infections. Autonomic dysfunction is relatively common in HIV-infected patients and heart rate variability is reduced even in early stages of infection...
July 20, 2017: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/28730305/self-assembly-of-the-polymer-brush-grafted-silica-colloidal%C3%A2-array-for-recognition-of-proteins
#9
Wei Chen, Kenneth J Shea, Min Xue, Lili Qiu, Yunhe Lan, Zihui Meng
Three-dimensional photonic crystal sensors are attractive platforms for autonomous chemical sensing and colorimetric bioassays. At present, the photonic crystal sensors with inverse opal structure were extensively studied, which swells or shrinks in response to the analytes. However, the fabrication of inverse opal sensors still remains a major challenge. Herein, we propose a simple and versatile approach to fabricate 3D opal photonic sensors. This photonic crystal is fabricated via assembly of monodispersed silica particles grafted with linear polymeric ligands (SiO2@LPs)...
July 20, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28730300/health-related-quality-of-life-in-paediatric-patients-with-congenital-heart-defects-association-with-the-type-of-heart-defect-and-the-surgical-technique
#10
A Heusch, H J Kahl, K O Hensel, G Calaminus
The aim of the study was to investigate the impact of a number of surgical interventions for a various congenital cardiac defects (CHDs) on self-reported HRQoL. METHODS: Patients who had received corrective surgery of several congenital heart defects (surgical VSD closure, Fallot, TGA after atrial or arterial switch or Fontan-type circulation for univentricular AV-connection) were interviewed in the office of their home peadiatric cardiologist. HRQoL in children along 7 dimensions was assessed using a standardised questionnaire (PEDQoL); information on the medical case history of each respondent was also collected...
July 20, 2017: Quality of Life Research
https://www.readbyqxmd.com/read/28730220/verner-morrison-syndrome-literature-review
#11
Oana Andreea Belei, Elena Rodica Heredea, Estera Boeriu, Tamara Marcela Marcovici, Simona Cerbu, Otilia Mărginean, Emil Radu Iacob, Daniela Iacob, Andrei Gheorghe Marius Motoc, Eugen Sorin Boia
Chronic diarrhea in infants is a common condition for addressability to pediatric gastroenterologists. The causes are multiple and the delay in reaching the final diagnosis can lead to complications in the general condition of the child. The purpose of this review is to present the bio-clinical and histogenetic particularities of a rare clinical entity, characterized by tumoral causes of chronic diarrhea. VIPomas are neuroendocrine tumors that autonomously secrete vasoactive intestinal peptide (VIP). Watery diarrhea, hypokalemia and achlorhydria (WDHA) syndrome caused by VIP-producing tumors only rarely occurs in adult patients with non-pancreatic disease...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28730217/novel-perspectives-on-gastrointestinal-stromal-tumors-gists
#12
Bogdan Stelian Mastalier Manolescu, Cristiana Gabriela Popp, Valentin Popescu, Dan Andraş, Sabina Andrada Zurac, Costin Berceanu, Aida TincuŢa Petca
Since they were described, gastrointestinal stromal tumors (GISTs) are, for pathologists and not only for them, a subject of controversy regarding histological origin, differentiation, nomenclature, malignant potential and prognosis. Before 1998, there were no certainties that GISTs were fundamentally different from other types of abdominal cancers in the big family of mesenchymal tumors. Before the discovery of KIT gene mutations, GISTs were most often classified as leiomyoma, leiomyosarcoma, leiomyoblastoma, and gastrointestinal autonomic nerve tumor...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28730179/causal-neuro-immune-relationships-at-patients-with-chronic-pyelonephritis-and-cholecystitis-correlations-between-parameters-eeg-hrv-and-white-blood-cell-count
#13
Andriy B Kul'chyns'kyi, Valeriy M Kyjenko, Walery Zukow, Igor L Popovych
We aim to analyze in bounds KJ Tracey's immunological homunculus conception the relationships between parameters of electroencephalogram (EEG) and heart rate variability (HRV), on the one hand, and the parameters of bhite blood cell count, on the other hand. METHODS: In basal conditions in 23 men, patients with chronic pyelonephritis and cholecystitis in remission, recorded EEG ("NeuroCom Standard", KhAI Medica, Ukraine) and HRV ("Cardiolab+VSR", KhAI Medica, Ukraine). In portion of blood counted up white blood cell count...
2017: Open Medicine (Warsaw, Poland)
https://www.readbyqxmd.com/read/28729927/fatigue-and-cognition-pupillary-responses-to-problem-solving-in-early-multiple-sclerosis-patients
#14
Sigrid A de Rodez Benavent, Gro O Nygaard, Hanne F Harbo, Siren Tønnesen, Piotr Sowa, Nils I Landrø, Marte Wendel-Haga, Lars Etholm, Kristian B Nilsen, Liv Drolsum, Emilia Kerty, Elisabeth G Celius, Bruno Laeng
INTRODUCTION: In early multiple sclerosis (MS) patients, cognitive changes and fatigue are frequent and troublesome symptoms, probably related to both structural and functional brain changes. Whether there is a common cause of these symptoms in MS is unknown. In theory, an altered regulation of central neuropeptides can lead to changes in regulation of autonomic function, cognitive difficulties, and fatigue. Direct measurements of central neuropeptides are difficult to perform, but measurements of the eye pupil can be used as a reliable proxy of function...
July 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28729753/gesture-and-intonation-are-sister-systems-of-infant-communication-evidence-from-regression-patterns-of-language-development
#15
David P Snow
This study investigates infants' transition from nonverbal to verbal communication using evidence from regression patterns. As an example of regressions, prelinguistic infants learning American Sign Language (ASL) use pointing gestures to communicate. At the onset of single signs, however, these gestures disappear. Petitto (1987) attributed the regression to the children's discovery that pointing has two functions, namely, deixis and linguistic pronouns. The 1:2 relation (1 form, 2 functions) violates the simple 1:1 pattern that infants are believed to expect...
January 2017: Language Sciences
https://www.readbyqxmd.com/read/28729675/oxygen-induced-impairment-in-arterial-function-is-corrected-by-slow-breathing-in-patients-with-type-1-diabetes
#16
Luciano Bernardi, Daniel Gordin, Marco Bordino, Milla Rosengård-Bärlund, Anna Sandelin, Carol Forsblom, Per-Henrik Groop
Hyperoxia and slow breathing acutely improve autonomic function in type-1 diabetes. However, their effects on arterial function may reveal different mechanisms, perhaps potentially useful. To test the effects of oxygen and slow breathing we measured arterial function (augmentation index, pulse wave velocity), baroreflex sensitivity (BRS) and oxygen saturation (SAT), during spontaneous and slow breathing (6 breaths/min), in normoxia and hyperoxia (5 L/min oxygen) in 91 type-1 diabetic and 40 age-matched control participants...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28728939/autonomic-dysreflexia-somatosympathetic-and-viscerosympathetic-vasoconstrictor-responses-to-innocuous-and-noxious-sensory-stimulation-below-lesion-in-human-spinal-cord-injury
#17
Rachael Brown, Alexander R Burton, Vaughan G Macefield
Autonomic dysreflexia is a dangerous elevation in blood pressure in people with spinal cord injury (SCI), produced by a spinally-mediated reflex activation of sympathetic vasoconstrictor neurones supplying skeletal muscle and the gut. Current dogma states that, apart from visceral inputs - such as those originating from a distended bladder or impacted colon - autonomic dysreflexia is triggered by noxious inputs below the lesion. However, while selective stimulation of small-diameter afferents in muscle or skin evokes a sustained increase in muscle sympathetic nerve activity and blood pressure, and a transient increase in skin sympathetic nerve activity and decrease in skin blood flow in able-bodied subjects, such noxious inputs have no effects on blood pressure and skin blood flow in SCI individuals...
July 13, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28728915/continuous-glucose-monitoring-adds-information-beyond-hba1c-in-well-controlled-diabetes-patients-with-early-cardiovascular-autonomic-neuropathy
#18
Jesper Fleischer, Esben Laugesen, Simon Lebech Cichosz, Pernille Hoeyem, Thomas Fremming Dejgaard, Per Loegstrup Poulsen, Lise Tarnow, Troels Krarup Hansen
AIMS: Hyperglycemia as evaluated by HbA1c is a risk factor for the development of cardiovascular autonomic neuropathy (CAN). The aim of the present study was to investigate whether continuous glucose monitoring (CGM) may add information beyond HbA1c in patients with type 2 diabetes and CAN. METHODS: 81 patients with type 2 diabetes (43 men, mean age 58±11year, HbA1c 6.6±0.5%). Patients were tested for CAN using cardiovascular reflex tests (response to standing, deep breathing and Valsalva maneuver) and underwent CGM for three days...
June 30, 2017: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/28728564/comparison-of-the-protein-coding-genomes-of-three-deep-sea-sulfur-oxidising-bacteria-candidatus-ruthia-magnifica-candidatus-vesicomyosocius-okutanii-and-thiomicrospira-crunogena
#19
Susan E McGill, Daniel Barker
OBJECTIVE: " Candidatus Ruthia magnifica", "Candidatus Vesicomyosocius okutanii" and Thiomicrospira crunogena are all sulfur-oxidising bacteria found in deep-sea vent environments. Recent research suggests that the two symbiotic organisms, "Candidatus R. magnifica" and "Candidatus V. okutanii", may share common ancestry with the autonomously living species T. crunogena. We used comparative genomics to examine the genome-wide protein-coding content of all three species to explore their similarities...
July 20, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28728503/facilitators-and-barriers-to-international-collaboration-in-spinal-cord-injury-results-from-a-survey-of-clinicians-and-researchers
#20
Vanessa K Noonan, Elaine Chan, Kent Bassett-Spiers, David J Berlowitz, Fin Biering-Sørensen, Susan Charlifue, Marnie Graco, Keith C Hayes, Jane Horsewell, Phalgun Joshi, Debora Markelis, Verna Smith, Zeina Waheed, Doug J Brown
International collaboration in spinal cord injury (SCI) clinical research is necessary to overcome the challenges often encountered by clinicians and researchers including participant recruitment, high cost and the need for highly specialized expertise. However, international collaboration poses its own obstacles. The objective of this study was to conduct an international online survey to assess barriers and facilitators to international SCI clinical research, potential initiatives to facilitate future collaborations and the use of SCI-specific data sets and standards...
July 20, 2017: Journal of Neurotrauma
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