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https://www.readbyqxmd.com/read/28937230/vagal-immune-interactions-involved-in-cholinergic-anti-inflammatory-pathway
#1
I Zila, D Mokra, J Kopincova, M Kolomaznik, M Javorka, A Calkovska
Inflammation and other immune responses are involved in the variety of diseases and disorders. The acute response to endotoxemia includes activation of innate immune mechanisms as well as changes in autonomic nervous activity. The autonomic nervous system and the inflammatory response are intimately linked and sympathetic and vagal nerves are thought to have anti-inflammation functions. The basic functional circuit between vagus nerve and inflammatory response was identified and the neuroimmunomodulation loop was called cholinergic anti-inflammatory pathway...
September 22, 2017: Physiological Research
https://www.readbyqxmd.com/read/28936180/mouse-anaphylactic-hypotension-is-characterized-by-initial-baroreflex-independent-renal-sympathoinhibition-followed-by-sustained-renal-sympathoexcitation
#2
Tao Zhang, Mamoru Tanida, Kunitoshi Uchida, Yoshiro Suzuki, Wei Yang, Yuhichi Kuda, Yasutaka Kurata, Makoto Tominaga, Toshishige Shibamoto
Aim: The hemodynamic response to mouse systemic anaphylaxis is characterized by an initial hypertension followed by sustained hypotension. However, the defense mechanisms of the sympathetic nervous system against this circulatory disturbance is not known. Here, we investigated the renal sympathetic nerve activity (RSNA) response to mouse systemic anaphylaxis, along with the roles of carotid sinus baroreceptor, vagal nerves and the transient receptor potential vanilloid type 1 channel (TRPV1). Methods: Male ovalbumin-sensitized C57BL/6N mice were used under pentobarbital anesthesia...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28933067/central-modulation-of-energy-homeostasis-and-cognitive-performance-after-bariatric-surgery
#3
Hans Eickhoff
In moderately or morbidly obese patients, bariatric surgery has been proven to be an effective therapeutic approach to control body weight and comorbidities. Surgery-mediated modulation of brain function via modified postoperative secretion of gut peptides and vagal nerve stimulation was identified as an underlying mechanism in weight loss and improvement of weight-related diseases. Increased basal and postprandial plasma levels of gastrointestinal hormones like glucagon-like peptide 1 and peptide YY that act on specific areas of the hypothalamus to reduce food intake, either directly or mediated by the vagus nerve, are observed after surgery while suppression of meal-induced ghrelin release is increased...
2017: Advances in Neurobiology
https://www.readbyqxmd.com/read/28932225/expression-and-function-of-the-cholinergic-system-in-immune-cells
#4
REVIEW
Takeshi Fujii, Masato Mashimo, Yasuhiro Moriwaki, Hidemi Misawa, Shiro Ono, Kazuhide Horiguchi, Koichiro Kawashima
T and B cells express most cholinergic system components-e.g., acetylcholine (ACh), choline acetyltransferase (ChAT), acetylcholinesterase, and both muscarinic and nicotinic ACh receptors (mAChRs and nAChRs, respectively). Using ChAT(BAC)-eGFP transgenic mice, ChAT expression has been confirmed in T and B cells, dendritic cells, and macrophages. Moreover, T cell activation via T-cell receptor/CD3-mediated pathways upregulates ChAT mRNA expression and ACh synthesis, suggesting that this lymphocytic cholinergic system contributes to the regulation of immune function...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28931663/targeting-fatty-acid-amide-hydrolase-as-a-therapeutic-strategy-for-antitussive-therapy
#5
Michael A Wortley, John J Adcock, Eric D Dubuis, Sarah A Maher, Sara J Bonvini, Isabelle Delescluse, Ross Kinloch, Gordon McMurray, Christelle Perros-Huguet, Marianthi Papakosta, Mark A Birrell, Maria G Belvisi
Cough is the most common reason to visit a primary care physician, yet it remains an unmet medical need. Fatty acid amide hydrolase (FAAH) is an enzyme that breaks down endocannabinoids, and inhibition of FAAH produces analgesic and anti-inflammatory effects. Cannabinoids inhibit vagal sensory nerve activation and the cough reflex, so it was hypothesised that FAAH inhibition would produce antitussive activity via elevation of endocannabinoids.Primary vagal ganglia neurons, tissue bioassay, in vivo electrophysiology and a conscious guinea pig cough model were utilised to investigate a role for fatty acid amides in modulating sensory nerve activation in vagal afferents...
September 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28930923/neuroimaging-of-vagal-nerve-stimulation-are-we-missing-a-trick
#6
James K Ruffle, Qasim Aziz, Adam D Farmer
No abstract text is available yet for this article.
October 2017: Pain
https://www.readbyqxmd.com/read/28928157/alteration-of-cholinergic-anti-inflammatory-pathway-in-rat-with-ischemic-cardiomyopathy-modified-electrophysiological-function-of-heart
#7
Shu-Jie Wu, Yue-Chun Li, Zhe-Wei Shi, Zhong-Hao Lin, Zhi-Heng Rao, Si-Chao Tai, Mao-Ping Chu, Lei Li, Jia-Feng Lin
BACKGROUND: With chronic ischemia after myocardial infarction, the resulting scar tissue result in electrical and structural remodeling vulnerable to an arrhythmogenic substrate. The cholinergic anti-inflammatory pathway elicited by vagal nerve via α7 nicotinic acetylcholine receptors (α7-nAChR) can modulate local and systemic inflammatory responses. Here, we aimed to clarify a novel mechanism for the antiarrhythmogenic properties of vagal nerve during the ischemic cardiomyopathy (ICM)...
September 19, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28922935/stereotype-threat-trait-perseveration-and-vagal-activity-evidence-for-mechanisms-underpinning-health-disparities-in%C3%A2-black-americans
#8
DeWayne P Williams, Nicholas Joseph, LaBarron K Hill, John J Sollers, Michael W Vasey, Baldwin M Way, Julian Koenig, Julian F Thayer
OBJECTIVE: Black Americans (BAs) are at an elevated risk for morbidity and mortality in comparison to White Americans (WAs). Racial stressors are a common occurrence in American culture and is theorized to contribute to these disparities. When race-focused, stereotype threat (ST) is considered to be a factor that is detrimental to health in BAs; however few studies have directly investigated the impact of a ST manipulation on physiological function. Furthermore, it is proposed that racial stressors such as ST may have prolonged effects when more likely to perseverate (e...
September 19, 2017: Ethnicity & Health
https://www.readbyqxmd.com/read/28922171/pancreatic-polypeptide-in-parkinson-s-disease-a-potential-marker-of-parasympathetic-denervation
#9
Karoline Knudsen, Bolette Hartmann, Tatyana D Fedorova, Karen Østergaard, Klaus Krogh, Niels Møller, Jens J Holst, Per Borghammer
BACKGROUND AND OBJECTIVES: Parkinson's disease (PD) patients experience several non-motor symptoms from the gastrointestinal tract that may partly be caused by parasympathetic deficiency. The pancreas is densely innervated by the vagus nerve, which mediates early meal-induced secretion of pancreatic polypeptide (PP). Early secretion after sham feeding has been validated as a marker of vagal integrity. Thus, the aim was to evaluate the ratio of increased PP plasma levels after sham feeding in PD and correlate findings with gastrointestinal transit time (GITT)...
September 11, 2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28920767/auricular-vagal-nerve-stimulation-in-peripheral-arterial-disease-patients
#10
Gerald Hackl, Andreas Prenner, Philipp Jud, Franz Hafner, Peter Rief, Gerald Seinost, Ernst Pilger, Marianne Brodmann
BACKGROUND: Auricular nerve stimulation has been proven effective in different diseases. We investigated if a conservative therapeutic alternative for claudication in peripheral arterial occlusive disease (PAD) via electroacupuncture of the outer ear can be established. PATIENTS AND METHODS: In this prospective, double-blinded trial an ear acupuncture using an electroacupuncture device was carried out in 40 PAD patients in Fontaine stage IIb. Twenty patients were randomized to the verum group using a fully functional electroacupuncture device, the other 20 patients received a sham device (control group)...
September 18, 2017: VASA. Zeitschrift Für Gefässkrankheiten
https://www.readbyqxmd.com/read/28912019/a-nigro-vagal-pathway-controls-gastric-motility-and-is-affected-in-a-rat-model-of-parkinsonism
#11
Laura Anselmi, Luca Toti, Cecilia Bove, Jessica Hampton, R Alberto Travagli
BACKGROUND & AIMS: In most patients with Parkinson's disease, gastrointestinal (GI) dysfunctions, such as gastroparesis and constipation, are prodromal to the cardinal motor symptoms of the disease. Sporadic Parkinson's disease has been proposed to develop following ingestion of neurotoxicants that affect the brain-gut axis via the vagus nerve, and then travel to higher centers compromising the substantia nigra pars compacta (SNpc), and, later, the cerebral cortex. We aimed to identify the pathway that connects the brainstem vagal nuclei and the SNpc, and to determine whether this pathway is compromised in a rat model of Parkinsonism...
September 11, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28895162/laryngeal-emg-preferential-damage-of-the-posterior-cricoarytenoid-muscle-branches-especially-in-iatrogenic-recurrent-laryngeal-nerve-lesions
#12
Gerhard Foerster, Andreas H Mueller
OBJECTIVE: Laryngeal electromyography (LEMG) of the thyroarytenoid (TA) muscle alone may not be sufficient in all patients to characterize or prove a recurrent laryngeal nerve (RLN) lesion in cases of vocal fold immobility. LEMG of the posterior cricoarytenoid (PCA) muscle may provide additional information. STUDY DESIGN: Retrospective review. METHOD: Between 2008 and 2016, 339 patients in our laryngeal paralysis clinic were examined by transcutaneous needle TA-LEMG and, if tolerated, by PCA-LEMG...
September 12, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28888535/from-psychological-moments-to-mortality-a-multidisciplinary-synthesis-on-heart-rate-variability-spanning-the-continuum-of-time
#13
REVIEW
Andrew H Kemp, Julian Koenig, Julian F Thayer
Heart rate variability (HRV) indexes functioning of the vagus nerve, arguably the most important nerve in the human body. The Neurovisceral Integration Model has provided a structural framework for understanding brain-body integration, highlighting the role of the vagus in adaptation to the environment. In the present paper, we emphasise a temporal framework in which HRV may be considered a missing, structural link between psychological moments and mortality, a proposal we label as Neurovisceral Integration Across a Continuum of Time (or NIACT)...
September 6, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28887853/neuroendocrine-mechanisms-underlying-bariatric-surgery-insights-from-human-studies-and-animal-models
#14
REVIEW
Aneta Stefanidis, Brian J Oldfield
Obesity has reached epidemic proportions and to date, bariatric surgery remains the only effective treatment for morbid obesity in terms of its capacity to achieve durable weight loss. Bariatric surgery procedures, including Roux-en-Y gastric bypass (RYGB), adjustable gastric banding (AGB) and sleeve gastrectomy (SG) have been the primary procedures conducted over the past decade, with SG increasing in popularity over the past five years at the expense of both RYGB and AGB. Although these procedures were initially proposed to function via restrictive or malabsorptive mechanisms, it is now clear that profound physiological changes underlie the metabolic improvements in patients who undergo bariatric surgery...
September 8, 2017: Journal of Neuroendocrinology
https://www.readbyqxmd.com/read/28885117/the-interperiosteodural-concept-applied-to-the-jugular-foramen-and-its-compartmentalization
#15
Florian Bernard, Ilyess Zemmoura, Jean Philippe Cottier, Henri-Dominique Fournier, Louis-Marie Terrier, Stéphane Velut
OBJECTIVE The dura mater is made of 2 layers: the endosteal layer (outer layer), which is firmly attached to the bone, and the meningeal layer (inner layer), which directly covers the brain and spinal cord. These 2 dural layers join together in most parts of the skull base and cranial convexity, and separate into the orbital and perisellar compartments or into the spinal epidural space to form the extradural neural axis compartment (EDNAC). The EDNAC contains fat and/or venous blood. The aim of this dissection study was to anatomically verify the concept of the EDNAC by focusing on the dural layers surrounding the jugular foramen area...
September 8, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28879091/desensitization-of-stimulation-induced-weight-loss-a-secondary-finding-in-a-patient-with-vagal-nerve-stimulator-for-drug-resistant-epilepsy
#16
Fawad A Khan, Mugilan Poongkunran, Bonnie Buratto
No abstract text is available yet for this article.
2017: Epilepsy & Behavior Case Reports
https://www.readbyqxmd.com/read/28868262/a-cervical-schwannoma-masquerading-as-a-thyroid-nodule
#17
Sravanthi Nagavalli, Marelle Yehuda, Laron W McPhaul, Andrew G Gianoukakis
BACKGROUND: We present a case of a cervical schwannoma, likely originating from the pharyngeal plexus of the vagal nerve. The lesion masqueraded as a thyroid nodule and magnetic resonance imaging (MRI) assisted in preoperative diagnosis. We review the radiographic characteristics of nerve sheath tumors on MRI as well as the diagnostic cytologic stains which can enhance the possibility of a correct preoperative diagnosis. CASE: We describe a 60-year-old female with dysphagia and a neck mass consistent with a nodular goiter...
July 2017: European Thyroid Journal
https://www.readbyqxmd.com/read/28867480/vagus-nerve-stimulation-produces-a-hippocampal-formation-theta-rhythm-in-anesthetized-rats
#18
Adam Broncel, Renata Bocian, Paulina Kłos-Wojtczak, Jan Konopacki
Vagus nerve stimulation (VNS) has been used for years to treat patients with drug-resistant epilepsy. In the present study, the effect of different stimulation protocols of VNS on the hippocampal formation (HPC) type II theta field potentials were evaluated in anesthetized rats. The following theta parameters were analysed: power, frequency and duration of theta epochs. We documented for the first time the presence of HPC type II theta in response to the application of VNS. A VNS-induced theta rhythm appeared in different experimental protocols and, depending on the current intensity, could occur directly during VNS (brief effect) or after vagal stimulation (delayed effect), using lower intensity stimuli...
August 31, 2017: Brain Research
https://www.readbyqxmd.com/read/28866688/alpha-synuclein-to-the-rescue-immune-cell-recruitment-by-alpha-synuclein-during-gastrointestinal-infection
#19
Viviane Labrie, Patrik Brundin
Intraneuronal accumulation of misfolded alpha-synuclein in the central and peripheral nervous systems is strongly linked to Parkinson disease (PD) and other related synucleinopathies. In rare inherited forms of PD, point mutations or gene multiplications mediate the formation of alpha-synuclein protein aggregates. However, in most PD cases it is presumed that the combined effects of ageing and environmental factors drive the formation of alpha-synuclein aggregates. Despite advances regarding alpha-synuclein pathobiology, the normal functions of this protein and factors that regulate its expression are not well understood...
2017: Journal of Innate Immunity
https://www.readbyqxmd.com/read/28865207/immunohistochemical-characterization-of-the-jugular-superior-vagal-ganglion-in-the-pig
#20
W Sienkiewicz, A Dudek, A Zacharko-Siembida, M Marszałek
The study was carried out on three 4-month old female pigs. All the animals were deeply anesthetized and transcardially perfused with 4% buffered paraformaldehyde (pH 7.4). Left and right superior vagal ganglia (SVG) were collected and processed for immunofluorescence labeling method. The preparations were examined under a Zeiss LSM 710 confocal microscope equipped with adequate filter block. Neurons forming SVG were round or oval in shape with a round nucleus in the center. The majority of them (52%) were medium (M) (31-50 μm in diameter) while 7% and 41% were small (S) (up to 30μm in diameter) or large (L) (above 50 μm in diameter) in size, respectively...
March 1, 2017: Polish Journal of Veterinary Sciences
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