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https://www.readbyqxmd.com/read/29771730/vagal-mediation-of-low-frequency-heart-rate-variability-during-slow-yogic-breathing
#1
Bryan W Kromenacker, Anna A Sanova, Frank I Marcus, John J B Allen, Richard D Lane
OBJECTIVE: Changes in heart rate variability (HRV) associated with breathing (respiratory sinus arrhythmia [RSA]) are known to be parasympathetically (vagally) mediated when the breathing rate is within the typical frequency range (9-24 breaths/min; high frequency HRV). Slow yogic breathing occurs at rates below this range and increases low frequency HRV power, which may additionally reflect a significant sympathetic component. Yogic breathing techniques are hypothesized to confer health benefits by increasing cardiac vagal control, but increases in low frequency HRV power cannot unambiguously distinguish sympathetic from parasympathetic contributions...
May 16, 2018: Psychosomatic Medicine
https://www.readbyqxmd.com/read/29767791/noninvasive-vagal-nerve-stimulation-in-chronic-migraine-with-medication-overuse-headache
#2
Alessandro Vacca, Annalisa Gai, Flora Govone, Elisa Rubino, Paola De Martino, Salvatore Gentile, Lorenzo Pinessi, Innocenzo Rainero
No abstract text is available yet for this article.
May 14, 2018: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/29767741/gateway-reflex-neural-activation-mediated-immune-cell-gateways-in-the-central-nervous-system
#3
Daisuke Kamimura, Takuto Ohki, Yasunobu Arima, Masaaki Murakami
The neural regulation of organs can be categorized as systemic or local. Whereas systemic regulation by the hypothalamus-pituitary-adrenal gland-mediated release of steroid hormones has been well studied, the mechanisms for local regulation have only recently emerged. Two types of local neural regulation are known, the gateway reflex and the inflammatory reflex. The gateway reflex describes a mechanism that converts regional neural stimulations into inflammatory outputs by changing the state of specific blood vessels...
May 15, 2018: International Immunology
https://www.readbyqxmd.com/read/29766790/malt-lymphoma-stress-ulcer-and-cholinergic-nerves-from-the-viewpoint-of-bilateral-and-unilateral-truncal-vagotomy-and-substance-p
#4
Yosuke Kodama, Kazuki Sasaki, Futa Murasato, Anders Øverby, Shinichi Takahashi, Somay Y Murayama, Hidenori Matsui, Masahiko Nakamura
BACKGROUND: Vagal nerve plays an important role in the stomach function. The cholinergic nerves are the most abundantly distributed nerves in the gastric tissue. It has recently been reported that the vagal nerve is significantly related to both gastric cancer development and progression. However, its relation to the mesenchymal tumor, including MALT lymphoma, is not known. In this study, we investigated the effect of unilateral truncal vagotomy on gastric MALT lymphoma development by using Helicobacter heilmannii-infected mouse model as well as that of bilateral truncal vagotomy on stress-induced ulcer formation...
May 15, 2018: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/29764583/-syndromic-hirschsprung-prime-s-disease-and-its-mode-of-inheritance
#5
Jing-Ru Zhang, Zhi-Bo Zhang
Hirschsprung′s disease (HSCR) is one of the major causes of chronic incomplete intestinal obstruction in children. HSCR is considered a type of neurocristopathy caused by no colonization of ganglion cells on some parts of the bowel wall due to abnormal termination of the migration of vagal neural cells during embryonic development. This disease can be classified into different types according to the length of the affected intestinal canal. Most HSCR patients present with single deformity, but some HSCR patients are affected by other deformities, which constitutes syndromic HSCR, such as congenital central hypoventilation syndrome, Fryns syndrome, and cartilage-hair hypoplasia syndrome...
May 2018: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/29760179/time-restricted-feeding-prevents-ablation-of-diurnal-rhythms-in-gastric-vagal-afferent-mechanosensitivity-observed-in-high-fat-diet-induced-obese-mice
#6
Stephen J Kentish, George Hatzinikolas, Hui Li, Claudine A Frisby, Gary A Wittert, Amanda J Page
Mechanosensitive gastric vagal afferents (GVAs) are involved in the regulation of food intake. GVAs exhibit diurnal rhythmicity in their response to food related stimuli allowing time of day specific satiety signalling. This diurnal rhythmicity is ablated in high fat diet (HFD)-induced obesity. Time restricted feeding (TRF) has a strong influence on peripheral clocks. This study aimed to determine whether diurnal patterns in GVA mechanosensitivity are entrained by TRF.Eight-week old male C57BL/6 mice (N=256) were fed a standard laboratory diet (SLD) or HFD for 12wks...
May 14, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29759718/vagal-neuromodulation-for-atrial-arrhythmias
#7
EDITORIAL
Kalyanam Shivkumar, Jeffrey L Ardell
No abstract text is available yet for this article.
September 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29758470/association-between-changes-in-heart-rate-variability-during-the-anticipation-of-a-stressful-situation-and-the-stress-induced-cortisol-response
#8
Matias M Pulopulos, Marie-Anne Vanderhasselt, Rudi De Raedt
Vagal activity - reflecting the activation of stress regulatory mechanisms and prefrontal cortex activation - is thought to play an inhibitory role in the regulation of the hypothalamus-pituitary-adrenal axis. However, most studies investigating the association between stress-induced changes in heart rate variability (HRV, an index of cardiac vagal tone) and cortisol have shown a non-significant relationship. It has been proposed that physiological changes observed during anticipation of a stressor allow individuals to make behavioral, cognitive, and physiological adjustments that are necessary to deal with the upcoming actual stressor...
May 3, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29757068/physiotherapy-interventions-for-patients-with-chronic-pelvic-pain-a-systematic-review-of-the-literature
#9
Pedro Fuentes-Márquez, Irene Cabrera-Martos, Marie Carmen Valenza
OBJECTIVE: To summarize the available scientific evidence on physiotherapy interventions in the management of chronic pelvic pain (CPP). DATA SOURCES: A systematic review of randomized controlled trials was performed. An electronic search of MEDLINE, CINAHL, and Web of Science databases was performed to identify relevant randomized trials from 2010-2016. STUDY SELECTION: Manuscripts were included if at least one of the comparison groups received a physiotherapy intervention...
May 14, 2018: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/29756108/thoracoscopic-vagal-sparing-esophagectomy-and-colonic-interposition-for-caustic-stricture
#10
Deniz Tihan, Tuğba Matlım, Taylan Çelik, Fatih Altıntoprak, Oktar Asoğlu
Minimally invasive esophagectomy is an increasing trend in surgery. Thoracoscopic esophagectomy is applicable and an alternative procedure to conventional esophagectomy in patients especially with end-stage benign diseases like caustic stricture. A 33-year-old female patient was admitted to the department of general surgery with dysphagia. The patient was suffering from caustic stricture due to ingestion of hydrochloric acid. A totally thoracoscopic and laparoscopic vagal-sparing esophagectomy and colonic interposition was performed...
2018: Turkish Journal of Surgery
https://www.readbyqxmd.com/read/29753022/determinants-of-heart-rate-variability-in-the-general-population-the-lifelines-cohort-study-determinants-of-heart-rate-variability
#11
Balewgizie Sileshi Tegegne, Tengfei Man, Arie M van Roon, Harriëtte Riese, Harold Snieder
BACKGROUND: Heart rate variability (HRV) is an important marker of heart health with low values reflecting reduced vagal control of the heart rhythm. OBJECTIVE: The aim of this study was to investigate to what extent a broad range of demographic (age, sex), lifestyle (physical activity, smoking, alcohol use) and psychosocial factors (stress, social wellbeing, neuroticism) explained individual differences in HRV in the general population. METHODS: Using baseline data of 10 second electrocardiograms (ECG) from the Lifelines cohort study (n=149,205;58...
May 9, 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29751028/role-of-c1-neurons-in-anti-inflammatory-reflex-mediation-between-afferents-and-efferents
#12
REVIEW
Chikara Abe, Tsuyoshi Inoue
Neuroimmune communication, the connection between the autonomic regulatory pathway and immune cells, has been implicated in the regulation of immune function and inflammation. The role of afferents (vagal afferent and somatic sensory nerves) and efferents (autonomic nervous and hypothalamic-pituitary-adrenal systems) in the inflammatory reflex has been well studied; however, the central pathway remains unknown. C1 neurons include both catecholaminergic and glutamatergic neurons, which are located in the rostral ventrolateral medulla...
May 8, 2018: Neuroscience Research
https://www.readbyqxmd.com/read/29746219/feasibility-of-continuous-intraoperative-neural-monitoring-during-transoral-endoscopic-thyroidectomy-vestibular-approach-in-a-porcine-model
#13
Daqi Zhang, Shijie Li, Gianlorenzo Dionigi, Tie Wang, Jiao Zhang, Gaofeng Xue, Hui Sun
BACKGROUND: Experimental study to evaluate feasibility of continuous intraoperative neural monitoring (C-IONM) in transoral endoscopic thyroidectomy vestibular approach (TOETVA). METHODS: Duroc-Landrace pigs were orally intubated with electromyogram endotracheal tube. Automatic periodic stimulation (APS) electrode was allocated in the operative field through the 5-mm ports. APS was then repose on vagal nerve (VN) with different approaches: (1) median, that is, between sternothyroid and thyroid gland; and (2) lateral, that is, between sternocleidomastoid and sternothyroid...
May 10, 2018: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/29746171/increased-task-channel-mediated-currents-underlie-high-fat-diet-induced-vagal-afferent-dysfunction
#14
Sung Jin Park, Yang Yu, Brittany Wagner, William C Valinsky, Alan E Lomax, Michael J Beyak
We have previously demonstrated that satiety sensing vagal afferent neurons are less responsive to meal-related stimuli in obesity, due to reduced electrical excitability. As leak K+ currents are key determinants of membrane excitability, we hypothesized that leak K+ currents are increased in vagal afferents during obesity. Diet-induced obesity (DIO) was induced by feeding C57Bl/6J mice a high fat fed diet (60% energy from fat - HFF) for 8-10 weeks. In vitro extracellular recordings were performed on jejunal afferent nerves...
May 10, 2018: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/29746169/preventive-effects-of-transcutaneous-electrical-acustimulation-on-ischemic-stroke-induced-constipation-mediated-via-the-autonomic-pathway
#15
Zhaoxiu Liu, Yebo Ge, Feng Xu, Yuemei Xu, Yanmei Liu, Feizhen Xia, Lin Lin, Jiande Dz Chen
AIM: To explore the preventive effect and possible mechanisms of transcutaneous electrical acustimulation (TEA) on stroke-induced constipation. METHODS: A total of 86 ischemic stroke patients were randomly allocated to 2-week TEA or sham-TEA group. Bowel dairy and Bristol Stool Form Scale were recorded daily. Constipation and dyspeptic symptom assessment was performed at the end of the 14-day treatment. Electrocardiogram was recorded for the assessment of autonomic function...
May 10, 2018: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/29745434/efficacy-of-needleless-transcutaneous-electroacupuncture-in-synchronization-with-breathing-for-symptomatic-idiopathic-gastroparesis-a-blinded-and-controlled-acute-treatment-trial
#16
G Song, Y Sun, M Bashashati, A Quezada, S Sigaroodi, I Sarosiek, J D Z Chen, R W McCallum
BACKGROUND: Needleless transcutaneous electroacupuncture (TEA) improves nausea and myoelectrical activity in diabetic gastroparesis (GP). Synchronized TEA (STEA), which combines synchronized breathing with TEA, is more potent than TEA in enhancing vagal activity in healthy subjects. AIMS: To investigate whether STEA improves symptoms, electrogastrogram (EGG) and vagal activity in idiopathic gastroparesis (IGP). METHODS: Eighteen IGP subjects underwent 2 randomized visits (sham at non-acupoints or real STEA at acupoints) consisted of a 30-minute baseline, an Ensure challenge to provoke nausea, followed by 60-minute treatment with sham or real STEA, and 15-minute observation period...
May 10, 2018: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/29744667/vagus-nerve-stimulation-exerts-cardioprotection-against-myocardial-ischemia-reperfusion-injury-predominantly-through-its-efferent-vagal-fibers
#17
Watthana Nuntaphum, Wanpitak Pongkan, Suwakon Wongjaikam, Savitree Thummasorn, Pongpan Tanajak, Juthamas Khamseekaew, Kannaporn Intachai, Siriporn C Chattipakorn, Nipon Chattipakorn, Krekwit Shinlapawittayatorn
Vagus nerve stimulation (VNS) has been shown to exert cardioprotection against myocardial ischemia/reperfusion (I/R) injury. However, whether the cardioprotection of VNS is mainly due to direct activation through its ipsilateral efferent fibers (motor) rather than indirect effects mediated by the afferent fibers (sensory) have not been clearly understood. We hypothesized that VNS exerts cardioprotection predominantly through its efferent vagal fibers. Thirty swine (30-35 kg) were randomized into five groups: I/R no VNS (I/R), and left mid-cervical VNS with both vagal trunks intact (LC-VNS), with left vagus nerve transection (LtVNX), with right vagus nerve transection (RtVNX) and with atropine pretreatment (Atropine), respectively...
May 9, 2018: Basic Research in Cardiology
https://www.readbyqxmd.com/read/29744386/pulmonary-aspiration-during-intubation-in-a-high-risk-patient-a-video-clip-and-clinical-implications
#18
Gi-Ho Koh, Sung-Hoon Kim, Hyo-Jung Son, Jun-Young Jo, Seong-Soo Choi, Se-Ung Park, Wook-Jong Kim, Seung-Woo Ku
We report a case of pulmonary aspiration during induction of general anesthesia in a patient who was status post esophagectomy. Sudden, unexpected aspiration occurred even though the patient had fasted adequately (over 13 hours) and received rapid sequence anesthesia induction. Since during esophagectomy, the lower esophageal sphincter is excised, stomach vagal innervation is lost, and the stomach is flaccid, draining only by gravity, the patient becomes vulnerable to aspiration. As the incidence of perioperative pulmonary aspiration is relatively low, precautions to prevent aspiration tend to be overlooked...
April 2018: Journal of Dental Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/29742457/some-technical-issues-of-vagal-nerve-stimulation-an-approach-using-a-hippocampal-formation-theta-rhythm
#19
Adam Broncel, Renata Bocian, Paulina Kłos-Wojtczak, Jan Konopacki
Previously, we have demonstrated that hippocampal (HPC) theta rhythm can be produced, depending on current intensity, directly during vagal nerve stimulation (VNS) or with a time delay following stimulation. This suggests that theta EEG pattern can also be used as a bio-indicator of the efficiency of VNS. In the present study, we focused on three specific, technical issues related to the stimulation procedure of the vagal nerve: i/does the type of the electrode used for VNS and the technique of its implantation affect the parameters of the HPC theta rhythm? ii/does the type of electrode used determine the current intensity threshold of VNS-induced HPC theta? iii/is the repeatability of the VNS effect determined by the type of electrode used? We demonstrated that a platinum-iridium cuff electrode offers some important advantages over a tungsten electrode...
May 6, 2018: Brain Research Bulletin
https://www.readbyqxmd.com/read/29741930/highly-sensitive-index-of-cardiac-autonomic-control-based-on-time-varying-respiration-derived-from-ecg
#20
Pierre Gilfriche, Laurent M Arsac, Yannick Daviaux, Jaime Diaz-Pineda, Brice Miard, Olivier Morellec, Jean-Marc André
Frequency-domain indices of Heart Rate Variability (HRV) have been used as a marker of sympathovagal balance. However, they have been shown to be degraded by inter-individual or task-dependent variability, and especially breathing frequency. The study introduces a new method for analyzing respiratory (vagally) mediated Heart Rate Variability, to better assess subtle variations in sympathovagal balance, using ECG information. We evaluated the sensitivity of our new method comparatively to classic HRV analyses with cognitive workload...
May 9, 2018: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
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