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https://www.readbyqxmd.com/read/29130483/contributions-of-infant-vagal-regulation-at-1-month-to-subsequent-joint-attention-abilities
#1
Vera Mateus, Sara Cruz, Fernando Ferreira-Santos, Ana Osório, Adriana Sampaio, Carla Martins
Since birth, humans develop an ability to regulate their inner states and behaviors, when facing demanding situations, in order to restore calmness and engage with other persons and the surrounding environment. The present study analyzed whether 1-month infant vagal regulation to auditory stimuli was associated with later joint attention abilities-responding to and initiating joint attention-in interaction with their mothers. Twenty-three infants were assessed and measures of respiratory sinus arrhythmia-RSA (baseline and vagal tone change during auditory stimulation) were used as index of vagal regulation...
November 12, 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/29130228/-valuation-and-prospect-of-function-preserving-gastrectomy
#2
Shuchang Wang, Site Yu, Jia Xu, Gang Zhao
Preserving gastric function and improving quality of life (QOL) is the tendency of surgery for early gastric cancer. Function preserving gastrectomy (FPG) is applied to modify the extent of surgery and to achieve better quality of life at the premise of radical resection. Pylorus-preserving gastrectomy is the most favorable approach of FPG with oncological safety, which can improve nutritional status and QOL via preserving pylorus and vagal nerve. Proximal gastrectomy is widely accepted as FPG for early upper 1/3 gastric cancer...
October 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/29128975/transcutaneous-vagus-nerve-stimulation-tvns-modulates-flow-experience
#3
Lorenza S Colzato, Gina Wolters, Corinna Peifer
Flow has been defined as a pleasant psychological state that people experience when completely absorbed in an activity. Previous correlative evidence showed that the vagal tone (as indexed by heart rate variability) is a reliable marker of flow. So far, it has not yet been demonstrated that the vagus nerve plays a causal role in flow. To explore this we used transcutaneous vagus nerve stimulation (tVNS), a novel non-invasive brain stimulation technique that increases activation of the locus coeruleus (LC) and norepinephrine release...
November 11, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/29127233/vascular-endothelial-function-masks-increased-sympathetic-vasopressor-activity-in-rats-with-metabolic-syndrome
#4
Sylvain Battault, Cindy Meziat, Alessandro R Nascimento, Laura Braud, Sandrine Gayrard, Christian Legros, Frederic De Nardi, Jocelyne Drai, Olivier Cazorla, Jérôme Thireau, Gregory Meyer, Cyril Reboul
OBJECTIVE: Sympathetic hyperactivation, a common feature of obesity and metabolic syndrome, is a key trigger of hypertension. However, some obese subjects with autonomic unbalance present a dissociation between sympathetic activity mediated vasoconstriction and increased blood pressure. Here, we aimed to determine in a rat model of metabolic syndrome, whether the endothelium eNOS-NO pathway contribute to counteract the vasopressor effect of the sympathetic system. METHODS: Rats were fed a high fat and high sucrose diet for 15 weeks (HFS)...
November 10, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29113812/differential-associations-of-lower-cardiac-vagal-tone-with-insulin-resistance-and-insulin-secretion-in-recently-diagnosed-type-1-and-type-2-diabetes
#5
Dan Ziegler, Alexander Strom, Gidon Bönhof, Sonja Püttgen, Kálmán Bódis, Volker Burkart, Karsten Müssig, Julia Szendroedi, Daniel F Markgraf, Michael Roden
OBJECTIVE: It is unclear to which extent altered insulin sensitivity/secretion contribute to the development of diabetic cardiovascular autonomic neuropathy (CAN) characterized by diminished heart rate variability (HRV). We hypothesised that lower HRV is differentially associated with measures of insulin resistance and insulin secretion in recent-onset type 1 and type 2 diabetes. MATERIALS/METHODS: This cross-sectional study included participants from the German Diabetes Study with type 1 (n=275) or type 2 diabetes (n=450) with known diabetes duration ≤1 year and glucose-tolerant controls (n=81)...
November 4, 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29110883/linear-and-nonlinear-parameters-of-heart-rate-variability-in-ischemic-stroke-patients
#6
V Constantinescu, D Matei, V Costache, D Cuciureanu, C Arsenescu-Georgescu
INTRODUCTION: Cardiovascular system presents cortical modulation. Post-stroke outcome can be highly influenced by autonomic nervous system disruption. Heart rate variability (HRV) analysis is a simple non-invasive method to assess sympatho-vagal balance. OBJECTIVES: The purpose of this study was to investigate cardiac autonomic activity in ischemic stroke patients and to asses HRV nonlinear parameters beside linear ones. METHODS: We analyzed HRV parameters in 15 right and 15 left middle cerebral artery ischemic stroke patients, in rest condition and during challenge (standing and deep breathing)...
October 11, 2017: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/29101261/butyrate-reduces-appetite-and-activates-brown-adipose-tissue-via-the-gut-brain-neural-circuit
#7
Zhuang Li, Chun-Xia Yi, Saeed Katiraei, Sander Kooijman, Enchen Zhou, Chih Kit Chung, Yuanqing Gao, José K van den Heuvel, Onno C Meijer, Jimmy F P Berbée, Marieke Heijink, Martin Giera, Ko Willems van Dijk, Albert K Groen, Patrick C N Rensen, Yanan Wang
OBJECTIVE: Butyrate exerts metabolic benefits in mice and humans, the underlying mechanisms being still unclear. We aimed to investigate the effect of butyrate on appetite and energy expenditure, and to what extent these two components contribute to the beneficial metabolic effects of butyrate. DESIGN: Acute effects of butyrate on appetite and its method of action were investigated in mice following an intragastric gavage or intravenous injection of butyrate. To study the contribution of satiety to the metabolic benefits of butyrate, mice were fed a high-fat diet with butyrate, and an additional pair-fed group was included...
November 3, 2017: Gut
https://www.readbyqxmd.com/read/29081397/long-term-intermittent-high-amplitude-subcutaneous-nerve-stimulation-reduces-sympathetic-tone-in-ambulatory-dogs
#8
Yuan Yuan, Zhaolei Jiang, Ye Zhao, Wei-Chung Tsai, Jheel Patel, Lan S Chen, Changyu Shen, Shien-Fong Lin, Huei-Sheng Vincent Chen, Thomas H Everett, Michael C Fishbein, Zhenhui Chen, Peng-Sheng Chen
BACKGROUND: Reducing sympathetic efferent outflow from the stellate ganglia (SG) may be antiarrhythmic. OBJECTIVE: To test the hypothesis that chronic thoracic subcutaneous nerve stimulation (ScNS) could reduce SG nerve activity (SGNA) and control paroxysmal atrial tachycardia (PAT). METHODS: We performed thoracic ScNS in 8 dogs while monitoring the SGNA, vagal nerve activity (VNA) and subcutaneous nerve activity (ScNA). An additional 3 dogs were used for sham stimulation as controls...
October 25, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29071894/-effect-of-electroacupuncture-stimulation-of-heart-meridian-on-autonomic-nervous-activities-in-acute-myocardial-ischemia-rats
#9
Shuai Cui, Jing Xu, Jie Wang, Sheng-Bing Wu, Yi-Ping Zhou, Mei-Qi Zhou
OBJECTIVE: To observe the effect of electroacupuncture (EA) stimulation of the Heart Meridian on electrical activities of neck sympathetic and vagal nerves in acute myocardial ischemia (AMI) rats. METHODS: Thirty SD rats were randomly divided into 3 groups, sham operation (sham), model and EA(n=10 rats in each group). The left anterior descending branch (LADB) of the coronary artery was occluded to make an acute myocardial ischemia (AMI) model.For rats of the sham group, a surgical suture was simply threaded beneath the LADB without ligation...
December 25, 2016: Zhen Ci Yan Jiu, Acupuncture Research
https://www.readbyqxmd.com/read/29060853/the-challenge-of-magnetic-vagal-nerve-stimulation-for-myocardial-infarction-preliminary-clinical-trial
#10
Takuya Nishikawa, Keita Saku, Koji Todaka, Yukimitsu Kuwabara, Shinobu Arai, Takuya Kishi, Tomomi Ide, Hiroyuki Tsutsui, Kenji Sunagawa
Numerous studies have shown in animal models that vagal nerve stimulation (VNS) strikingly reduces infarct size of acute myocardial infarction (AMI) and prevents heart failure. However, the lack of techniques to noninvasively stimulate the vagal nerve hinders VNS from clinical applications. Transcranial magnetic stimulation is noninvasive and capable of stimulating central neurons in patients. In this study, we examined whether the magnetic stimulation could noninvasively activate the cervical vagal nerve in healthy human...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29060561/respiratory-gated-auricular-vagal-afferent-nerve-stimulation-ravans-effects-on-autonomic-outflow-in-hypertension
#11
Roberta Sclocco, Ronald G Garcia, Aileen Gabriel, Norman W Kettner, Vitaly Napadow, Riccardo Barbieri
Transcutaneous stimulation of the auricular branch of the vagus nerve (ABVN) has been proposed as a non-invasive alternative to vagus nerve stimulation (VNS). However, its cardiovagal effects are inconsistent across studies, likely due to inhomogeneity in the stimulation parameters. Here, we evaluate respiratory-gated ABVN stimulation (Respiratory-gated Auricular Vagal Afferent Nerve Stimulation, RAVANS), where the stimuli are delivered in 1 s bursts during the exhalation phase of respiration, thus mimicking the breathing-induced modulation of cardiac vagal activity...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29059589/high-frequency-burst-vagal-nerve-simulation-therapy-in-a-natural-primate-model-of-genetic-generalized-epilepsy
#12
C Á Szabó, F S Salinas, A M Papanastassiou, J Begnaud, M Ravan, K S Eggleston, R Shade, C Lutz, M De La Garza
PURPOSE: Since the approval of Vagal Nerve Stimulation (VNS) Therapy for medically refractory focal epilepsies in 1997, it has been also reported to be effective for a wide range of generalized seizures types and epilepsy syndromes. Instead of conventional VNS Therapy delivered at 20-30Hz signal frequencies, this study evaluates efficacy and tolerability of high-frequency burst VNS in a natural animal model for genetic generalized epilepsy (GGE), the epileptic baboon. METHODS: Two female baboons (B1 P...
October 12, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/29057708/characteristics-of-attention-related-body-sensations-temporal-stability-and-associations-with-measures-of-body-focus-affect-sustained-attention-and-heart-rate-variability
#13
Benedek T Tihanyi, Eszter Ferentzi, Ferenc Köteles
AIM: This study investigated the temporal stability and correlates of attention-related body sensations that emerge without external stimulation during rest and due to focused attention on a body part. MATERIALS: To assess attention-related body sensations, participants were asked to focus on a freely chosen body area with closed eyes, and had to report whether the sensation of that area had changed. Self-report questionnaires were used to assess various aspects of body focus (body awareness, body responsiveness, somatosensory amplification, subjective somatic symptoms), and positive and negative affectivity...
October 23, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/29057372/do-the-psychological-effects-of-vagus-nerve-stimulation-partially-mediate-vagal-pain-modulation
#14
Eleni Frangos, Emily A Richards, M Catherine Bushnell
There is preclinical and clinical evidence that vagus nerve stimulation modulates both pain and mood state. Mechanistic studies show brainstem circuitry involved in pain modulation by vagus nerve stimulation, but little is known about possible indirect descending effects of altered mood state on pain perception. This possibility is important, since previous studies have shown that mood state affects pain, particularly the affective dimension (pain unpleasantness). To date, human studies investigating the effects of vagus nerve stimulation on pain perception have not reliably measured psychological factors to determine their role in altered pain perception elicited by vagus nerve stimulation...
January 2017: Neurobiol Pain
https://www.readbyqxmd.com/read/29035775/avoiding-the-pocket-a-case-report-of-coiling-of-distal-shunt-catheter-into-subcutaneous-pocket
#15
Richard Justin Garling, Sandeep Sood, Carolyn Anne Harris
INTRODUCTION: Hydrocephalus is one of the most common disorders of neurosurgery and ventricular shunting, the primary surgical intervention, malfunctions in 85% of patients by 10 years. PRESENTATION OF CASE: Here we present a case of a 12-year-old girl with history of a vagal nerve stimulator (VNS) and ventricular shunt, most recently revised from ventriculoatrial (VA) to ventriculoperitoneal (VP) shunt at an outside hospital. The patient presented with a new left chest bulge, nausea, emesis, and seizures...
October 10, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29031749/vagal-nerve-stimulator-induced-chin-electromyography-artifact
#16
Pradeep C Bollu, Sivaraman Manjamalai
No abstract text is available yet for this article.
October 2017: Sleep Medicine
https://www.readbyqxmd.com/read/29030236/long-term-aerobic-exercise-in-calsequestrin2-knockout-mice-accentuates-vagal-antagonism-during-%C3%AE-adrenergic-stimulation-which-restricts-heart-rate-acceleration-and-paradoxically-increases-abnormal-ryanodine-receptor-calcium-leak-in-ventricular-myocytes
#17
Hsiang-Ting Ho, Senthil Thambidorai, Björn C Knollmann, George E Billman, Sandor Györke, Anuradha Kalyanasundaram
BACKGROUND: Long-term aerobic exercise (EX) alters autonomic balance which may not be favorable in heart rate (HR) dependent arrhythmic diseases including Catecholaminergic Polymorphic Ventricular Tachycardia (CPVT) due to preexisting bradycardia and increased sensitivity to parasympathetic stimulation. OBJECTIVE: The purpose of this study was to determine if long-term exercise-induced autonomic adaptations modify CPVT susceptibility. METHODS: We determined exercise-induced parasympathetic effects on HR, arrhythmia incidence and intracellular sarcoplasmic reticulum (SR) Ca(2+) leak in atrial (ACM) and ventricular (VCM) cardiomyocytes, in EX Calsequestrin knockout (CASQ2(-/-)) mice, a model of CPVT...
October 10, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28985965/ghrelin-projection-from-the-lateral-hypothalamus-area-to-the-dorsal-vagal-complex-and-its-regulation-of-gastric-motility-in-cisplatin-treated-rats
#18
Yanling Gong, Yang Liu, Yaoyao Guo, Manqing Su, Yifan Zhong, Luo Xu, Feifei Guo, Shengli Gao
OBJECTIVE: To investigate ghrelin projection from the lateral hypothalamus area (LHA) to the dorsal vagal complex (DVC) and its regulation of gastric motility in cisplatin-treated rats. MATERIALS AND METHODS: In the present study, the protein and mRNA expression of ghrelin and its receptor GHSR-1a were measured by Western blot and PCR, respectively. The ghrelin fiber projections arising from the LHA and projecting to the DVC were investigated by retrograde tracing combined with fluoro-immunohistochemical staining...
September 28, 2017: Neuropeptides
https://www.readbyqxmd.com/read/28984093/effects-of-laparoscopic-radical-prostatectomy-on-intraoperative-autonomic-nervous-system-control-of-hemodynamics
#19
Ferdinando Raimondi, Riccardo Colombo, Elena Costantini, Andrea Marchi, Alberto Corona, Tommaso Fossali, Beatrice Borghi, Stefano Figini, Stefano Guzzetti, Alberto Porta
BACKGROUND: Laparoscopic radical prostatectomy induces hemodynamic changes that have been supposed due to autonomic nervous system activity. The aim of this study is to measure the sympathetic and vagal modulation on hemodynamic response to steep Trendelenburg and pneumoperitoneum for laparoscopic surgery. METHODS: Autonomic nervous system modulation was assessed noninvasively through heart rate variability and arterial pressure variability analysis in patients undergoing elective laparoscopic radical prostatectomy and in awake volunteers during head-down tilt...
October 4, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28982197/distinct-and-common-expression-of-receptors-for-inflammatory-mediators-in-vagal-nodose-versus-jugular-capsaicin-sensitive-trpv1-positive-neurons-detected-by-low-input-rna-sequencing
#20
Jingya Wang, Marian Kollarik, Fei Ru, Hui Sun, Benjamin McNeil, Xinzhong Dong, Geoffrey Stephens, Susana Korolevich, Philip Brohawn, Roland Kolbeck, Bradley Undem
Capsaicin-sensitive sensory C-fibers derived from vagal ganglia innervate the visceral organs, and respond to inflammatory mediators and noxious stimuli. These neurons play an important role in maintenance of visceral homeostasis, and contribute to the symptoms of visceral inflammatory diseases. Vagal sensory neurons are located in two ganglia, the jugular ganglia (derived from the neural crest), and the nodose ganglia (from the epibranchial placodes). The functional difference, especially in response to immune mediators, between jugular and nodose neurons is not fully understood...
2017: PloS One
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