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Vagotomy

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https://www.readbyqxmd.com/read/28641770/does-vagotomy-protect-against-multiple-sclerosis
#1
Jens Sundbøll, Erzsébet Horváth-Puhó, Kasper Adelborg, Elisabeth Svensson
OBJECTIVES: To examine the association between vagotomy and multiple sclerosis. METHODS: We conducted a matched cohort study of all patients who underwent truncal or super-selective vagotomy and a comparison cohort, by linking Danish population-based medical registries (1977-1995). Hazard ratios (HRs) for multiple sclerosis, adjusting for potential confounders were computed by means of Cox regression analysis. RESULTS: Median age of multiple sclerosis onset corresponded to late onset multiple sclerosis...
July 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/28637453/electroacupuncture-at-li11-promotes-jejunal-motility-via-the-parasympathetic-pathway
#2
Xuanming Hu, Mengqian Yuan, Yin Yin, Yidan Wang, Yuqin Li, Na Zhang, Xueyi Sun, Zhi Yu, Bin Xu
BACKGROUND: Gastrointestinal motility disorder has been demonstrated to be regulated by acupuncture treatment. The mechanisms underlying the effects of acupuncture stimulation of abdominal and lower limb acupoints on gastrointestinal motility have been thoroughly studied; however, the physiology underlying the effects of acupuncture on the forelimbs to mediate gastrointestinal motility requires further exploration. The aim of this study was to determine whether electroacupuncture (EA) at LI11 promotes jejunal motility, whether the parasympathetic pathway participates in this effect, and if so, which somatic afferent nerve fibres are involved...
June 21, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28627584/gastric-electrical-stimulation-improves-enteric-neuronal-survival
#3
Nian Wang, Kun Li, Shuangning Song, Jie Chen
Research and clinical experience with vagotomy have confirmed that damage to the central nervous system severely affects physiological movement in the gastrointestinal system. The aim of this study was to investigate the effects of synchronized dual-pulse gastric electrical stimulation (SGES) on the apoptosis of enteric neurons and the possible pathways involved in these effects in vagotomized rats. For this purpose, Male Sprague-Dawley (SD) rats were randomized into a control group, an early subdiaphragmatic vagotomized group (ESDV group), an early subdiaphragmatic vagotomized group with short-term SGES (ESDV + SSGES group), a terminal subdiaphragmatic vagotomized group (TSDV group) and a terminal subdiaphragmatic vagotomized group with long-term SGES (TSDV + LSGES group)...
June 14, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28625138/membrane-bound-atp-dependent-energy-systems-as-extra-and-intracellular-key-signals-for-gastrointestinal-functions-and-their-regulations-in-the-gastrointestinal-mucosa
#4
Gyula Mózsik, Imre László Szabó, József Czimmer
AIMS: Our research group has carried out various biochemical examinations in rat gastric ulcer models and in human gastrointestinal resecates obtained from patient who underwent gastric intervention due to peptic ulcer disease. Biochemical methods gave excellent possibility to approach the biochemical events taking place in tissues, cellular and subcellular regulatory levels during of ulcer development and of its prevetions. This paper gives a briefsummary of these biochemical examinations conducted during this study period started from the 1960's up till now...
June 15, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28619729/characterization-and-mechanisms-of-the-supragastric-belch-in-the-cat
#5
Ivan M Lang, Bidyut K Medda, Reza Shaker
A response, i.e., the supragastric belch (SGB), in which a belch occurs without gastric involvement has been characterized in humans. The aims of this study were to determine whether animals have an SGB and if so to determine its mechanisms. Studies were conducted in decerebrate cats (N=30) with EMG electrodes on hyoid, pharyngeal, esophageal, and diaphragm muscles. The effects of distending different regions of the esophagus in different manners using a balloon were quantified to determine the most appropriate stimulus for activating the cat SGB...
June 15, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28606851/cardiorespiratory-action-of-opioid-tachykinin-agonist-peptide-hybrid-in-anaesthetized-rats-transduction-pathways
#6
Piotr Wojciechowski, Małgorzata Szereda-Przestaszewska, Andrzej Wojciech Lipkowski
AWL3106 composed of opioid (dermorphin) and tachykinin (substance P7-11) pharmacophores is a new compound with high analgesic potency and markedly reduced ability to induce tolerance and dependence. The present study aimed to determine the respiratory and cardiovascular responses evoked by this peptide in urethane-chloralose anaesthetized, spontaneously breathing rats in the presence or absence of vagal connection. Intravenous injection of AWL3106 at a dose of 0.3μmol/kg in intact rats resulted in apnoea lasting 5...
June 9, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28566886/effects-of-sleeve-gastrectomy-plus-trunk-vagotomy-compared-with-sleeve-gastrectomy-on-glucose-metabolism-in-diabetic-rats
#7
Teng Liu, Ming-Wei Zhong, Yi Liu, Xin Huang, Yu-Gang Cheng, Ke-Xin Wang, Shao-Zhuang Liu, San-Yuan Hu
AIM: To investigate the effects of sleeve gastrectomy plus trunk vagotomy (SGTV) compared with sleeve gastrectomy (SG) in a diabetic rat model. METHODS: SGTV, SG, TV and Sham operations were performed on rats with diabetes induced by high-fat diet and streptozotocin. Body weight, food intake, oral glucose tolerance test, homeostasis model assessment of insulin resistance (HOMA-IR), hepatic insulin signaling (IR, IRS1, IRS2, PI3K and AKT), oral glucose stimulated insulin secretion, GLP-1 and ghrelin were compared at various postoperative times...
May 14, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28529765/signals-of-vagal-circuits-engaging-with-akt1-in-%C3%AE-7-nachr-cd11b-cells-lessen-e-coli-and-lps-induced-acute-inflammatory-injury
#8
Caiqi Zhao, Xi Yang, Emily M Su, Yuanyuan Huang, Ling Li, Michael A Matthay, Xiao Su
Vagal circuits-α7 nAChR (α7 nicotinic acetylcholine receptor, coded by Chrna7) signaling utilizes spleen as a hub to dampen systemic inflammatory responses. Vagal innervations also extend to the distal airways and alveoli. Vagotomy and deficiency of α7 nAChR deteriorate E. coli and lipopolysaccharide (LPS)-induced acute lung inflammatory responses; however, the underlying mechanisms remain elusive. Here, we hypothesized that vagal circuits would limit splenic release and lung recruitment of α7 nAChR(+)CD11b(+) cells (CD11b is coded by Itgam, a surface marker of monocytes and neutrophils) via phosphorylation of AKT1 and that this process would define the severity of lung injury...
2017: Cell Discovery
https://www.readbyqxmd.com/read/28528063/an-involuntary-and-unexpected-treatment-of-nutcracker-esophagus
#9
Diane Mege, Alban Benezech, Henri de Lesquen, Véronique Vitton, Pascal-Alexandre Thomas
A 76-year-old woman complained of painful dysphagia and loss of weight. Esophagoscopy results were negative, whereas computed tomography (CT) disclosed a 25-mm mediastinal tumor without a connection to the esophagus. A diagnosis of nutcracker esophagus was made on high-resolution esophageal manometry. Peroral endoscopic esophageal myotomy failed to improve the symptoms. Right video thoracoscopy allowed resection of the tumor, which looked like a neurogenic tumor of the posterior mediastinum that developed from the right vagus nerve...
June 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28522805/nitric-oxide-donor-protects-against-acetic-acid-induced-gastric-ulcer-in-rats-via-s-nitrosylation-of-trpv1-on-vagus-nerve
#10
Ting Han, Yan Tang, Jing Li, Bing Xue, Liping Gong, Jingxin Li, Xiao Yu, Chuanyong Liu
This study was conducted to investigate the effects of nitric oxide (NO) in acetic acid-induced gastric ulcer of rats and the underlying mechanisms. We found that peritoneal injection of sodium nitroprusside (SNP), a NO donor, decreased the ulcer area, inflammatory cell infiltration and MPO degree in acetic acid-induced gastric ulcer in rats. This effect was abolished by a transient receptor potential vanilloid 1 (TRPV1) antagonist or prior subdiaphragmatic vagotomy. SNP increased the jejunal mesenteric afferent discharge in a dose-depended manner, which was largely diminished by pretreatment of S-nitrosylation blocker N-ethylmaleimide, TRPV1 antagonist capsazepine, genetic deletion of TRPV1, or vagotomy...
May 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28511917/evidence-of-the-role-of-the-vagal-nerves-as-a-monitor-in-the-gastrointestinal-renal-axis-of-natriuresis-in-human-effects-of-vagotomy
#11
Constantinos E Alifieris, Dimitrios T Trafalis, Aris D Efstratopoulos, Emmanuel K Alifieris
This study aimed to investigate the mechanism of gastrointestinal regulation of natriuresis. Sixteen subjects without (group I) and sixteen subjects with a truncal vagotomy (group II), were given a daily diet of 18mmol of sodium for 5days (D1-D5). The sodium deficit for this period was calculated for each subject and on the morning of day-6 (D6), their cumulative deficit (E) was given as 3% NaCl. In both groups the subjects were divided to receive the hypertonic saline either orally (Ior, IIor) or intravenously (Iiv, IIiv)...
May 10, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28462451/complexity-of-stomach-brain-interaction-induced-by-molecular-hydrogen-in-parkinson-s-disease-model-mice
#12
Yusuke Yoshii, Taikai Inoue, Yuya Uemura, Yusaku Iwasaki, Toshihiko Yada, Yusaku Nakabeppu, Mami Noda
Molecular hydrogen (H2), as a new medical gas, has protective effects in neurological disorders including Parkinson's disease (PD). In our previous report, the neuroprotective effect of drinking water with saturated H2 (H2 water) in PD mice might be due to stomach-brain interaction via release of gastric hormone, ghrelin. In the present study, we assessed the effect of H2-induced ghrelin more precisely. To confirm the contribution of ghrelin in H2 water-drinking PD model mice, ghrelin-knock out (KO) mice were used...
May 2, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28459715/biphasic-renal-sympathetic-response-to-hemorrhagic-hypotension-in-mice
#13
Tao Zhang, Mamoru Tanida, Kunitoshi Uchida, Yoshiro Suzuki, Wei Yang, Yuhichi Kuda, Yasutaka Kurata, Makoto Tominaga, Toshishige Shibamoto
AIM: The inhibitory responses of renal sympathetic nerve activity (RSNA) and heart rate (HR) to sustained hemorrhagic shock occurred in anesthetized rats, but have not yet been determined in mice. Here, we investigated the responses of RSNA and HR to hemorrhagic hypotension in anesthetized mice, with an emphasis on the molecule-based mechanism for roles of afferent vagal nerves. METHODS: RSNA, HR, and mean systemic arterial pressure (MAP) were continuously measured in male pentobarbital-anesthetized C57BL/6N mice...
April 28, 2017: Shock
https://www.readbyqxmd.com/read/28446653/vagotomy-and-parkinson-disease-a-swedish-register-based-matched-cohort-study
#14
Bojing Liu, Fang Fang, Nancy L Pedersen, Annika Tillander, Jonas F Ludvigsson, Anders Ekbom, Per Svenningsson, Honglei Chen, Karin Wirdefeldt
OBJECTIVE: To examine whether vagotomy decreases the risk of Parkinson disease (PD). METHODS: Using data from nationwide Swedish registers, we conducted a matched-cohort study of 9,430 vagotomized patients (3,445 truncal and 5,978 selective) identified between 1970 and 2010 and 377,200 reference individuals from the general population individually matched to vagotomized patients by sex and year of birth with a 40:1 ratio. Participants were followed up from the date of vagotomy until PD diagnosis, death, emigration out of Sweden, or December 31, 2010, whichever occurred first...
May 23, 2017: Neurology
https://www.readbyqxmd.com/read/28446643/preventing-parkinson-disease-by-vagotomy-fact-or-fiction
#15
EDITORIAL
Per Borghammer, Clement Hamani
No abstract text is available yet for this article.
April 26, 2017: Neurology
https://www.readbyqxmd.com/read/28445778/the-impact-of-bilateral-vagotomy-on-the-physostigmine-induced-airway-constriction-in-ferrets
#16
Burim Neziri, Armond Daci, Shaip Krasniqi, Ramadan Sopi, Musa A Haxhiu
Vagal innervations have a great role in the respiratory function and are the main route of signal transmission from respiratory neural centers into the trachea and others conducting airways. We have investigated the role of central mechanisms related to vagal neural pathways and the cholinergic outflow in tracheobronchial smooth muscle tone and lung mechanics parameters. Parameters of lung mechanics such as lung resistance (RL), dynamic compliance (Cdyn) and pressure in bypassed tracheal segment (Ptseg) were measured before and after vagotomy and asphyxia test...
April 23, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28440889/a-glucagon-like-peptide-1-analog-liraglutide-improves-visceral-sensation-and-gut-permeability-in-rats
#17
Tsukasa Nozu, Saori Miyagishi, Shima Kumei, Rintaro Nozu, Kaoru Takakusaki, Toshikatsu Okumura
BACKGROUND AND AIM: A glucagon-like peptide-1 (GLP-1) analog, liraglutide, has been reported to block inflammatory somatic pain. We hypothesized that liraglutide attenuates lipopolysaccharide (LPS)- and repeated water avoidance stress (WAS)-induced visceral hypersensitivity and tested the hypothesis in rats. METHODS: The threshold of the visceromotor response (VMR) induced by colonic balloon distention was measured to assess visceral sensation. Colonic permeability was determined in vivo by quantifying the absorbed Evans blue spectrophotometrically, which was instilled in the proximal colon for 15 min...
April 25, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28440477/synchronized-dual-pulse-gastric-electrical-stimulation-improves-gastric-emptying-and-activates-enteric-glial-cells-via-upregulation-of-gfap-and-s100b-with-different-courses-of-subdiaphragmatic-vagotomy-in-rats
#18
Nian Wang, Shuangning Song, Jie Chen
Previous research and clinical practice have indicated that damage to the vagal nerve may seriously affect gastrointestinal physiological movement behavior. The aim of the current study was to observe the change of gastric motility, as well as enteric glial cells (EGCs) in the stomach with different courses of vagal nerve transection in rats prior to and following synchronized dual pulse gastric electrical stimulation. The gastric emptying rates were measured to assess the gastric motility. The glial markers, containing calcium binding protein (S100B) and glial fibrillary acidic protein (GFAP), were detected by reverse transcription‑quantitative polymerase chain reaction and double‑labeling immunofluorescence analysis...
June 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28400507/effects-of-unilateral-airway-occlusion-on-rib-motion-and-inspiratory-intercostal-activity-in-dogs
#19
Dimitri Leduc, Sarah Marechal, Olivier Taton, Bernard Blairon, Alexandre Legrand
Unilateral bronchial occlusion, a complication of many lung diseases, causes dyspnea but the mechanism of this symptom is uncertain. In this study, electromyographic (EMG) activity in the parasternal and external intercostal muscles in the third intercostal space and inspiratory motion of the third rib on both sides of the thorax were assessed during occlusion of a main bronchus for a single breath in anesthetized dogs. Occlusion produced a 65% increase in external intercostal EMG activity in both hemithoraces without altering parasternal EMG activity...
April 2017: Physiological Reports
https://www.readbyqxmd.com/read/28349965/the-nicotinic-acetylcholine-receptor-%C3%AE-7-subunit-is-an-essential-negative-regulator-of-bone-mass
#20
Kazuaki Mito, Yuiko Sato, Tami Kobayashi, Kana Miyamoto, Eriko Nitta, Atsushi Iwama, Morio Matsumoto, Masaya Nakamura, Kazuki Sato, Takeshi Miyamoto
The nicotinic receptor α7nAchR reportedly regulates vagal nerve targets in brain and cardiac tissue. Here we show that nAchR7(-/-) mice exhibit increased bone mass due to decreased osteoclast formation, accompanied by elevated osteoprotegerin/RANKL ratios in serum. Vagotomy in wild-type mice also significantly increased the serum osteoprotegerin/RANKL ratio, and elevated bone mass seen in nAchR7(-/-) mice was reversed in α7nAchR/osteoprotegerin-doubly-deficient mice. α7nAchR loss significantly increased TNFα expression in Mac1-positive macrophages, and TNFα increased the osteoprotegerin/RANKL ratio in osteoblasts...
March 28, 2017: Scientific Reports
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