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Tongue stimulation

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https://www.readbyqxmd.com/read/28715374/in-vivo-evaluation-of-the-mechanical-and-viscoelastic-properties-of-the-rat-tongue
#1
Emanuele Loro, Stephen H Wang, Richard J Schwab, Tejvir S Khurana
The tongue is a highly innervated and vascularized muscle hydrostat on the floor of the mouth of most vertebrates. Its primary functions include supporting mastication and deglutition, as well as taste-sensing and phonetics. Accordingly, the strength and volume of the tongue can impact the ability of vertebrates to accomplish basic activities such as feeding, communicating, and breathing. Human patients with sleep apnea have enlarged tongues, characterized by reduced muscle tone and increased intramuscular fat that can be visualized and quantified by magnetic resonance imaging (MRI)...
July 6, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28709287/mode-locking-behavior-of-izhikevich-neurons-under-periodic-external-forcing
#2
AmirAli Farokhniaee, Edward W Large
Many neurons in the auditory system of the brain must encode periodic signals. These neurons under periodic stimulation display rich dynamical states including mode locking and chaotic responses. Periodic stimuli such as sinusoidal waves and amplitude modulated sounds can lead to various forms of n:m mode-locked states, in which a neuron fires n action potentials per m cycles of the stimulus. Here, we study mode-locking in the Izhikevich neurons, a reduced model of the Hodgkin-Huxley neurons. The Izhikevich model is much simpler in terms of the dimension of the coupled nonlinear differential equations compared with other existing models, but excellent for generating the complex spiking patterns observed in real neurons...
June 2017: Physical Review. E
https://www.readbyqxmd.com/read/28689344/neurological-results-of-the-modified-treatment-of-epilepsy-by-stimulation-of-the-vagus-nerve
#3
Michael Vaiman, Eli Heyman, Gad Lotan
INTRODUCTION: The vagus nerve stimulation (VNS) is used for treatment of drug-resistant epilepsy but laryngeal side effects are common. We tried to improve VNS by modifying the implantation procedure. The aim was to reduce the rate of side effects that have prevented using VNS to its full capacity. METHODS: We operated on 74 pediatric patients for VNS device implantation using a modified surgical protocol incorporating lower neck incision for electrode placement and 36 patients who were operated by standard technique were used for control group...
July 8, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28653289/histamine-h4-receptor-signalling-in-tongue-cancer-and-its-potential-role-in-oral-carcinogenesis%C3%A2-a-short-report
#4
Abdelhakim Salem, Rabeia Almahmoudi, Dyah Listyarifah, Maria Siponen, Katariina Maaninka, Ahmed Al-Samadi, Tuula Salo, Kari K Eklund
PURPOSE: Recent reports indicate that histamine and its novel, high-affinity histamine H4 receptor (H4R) play a role in carcinogenesis, and thus H4R signalling has become a focus of increasing interest in the pathogenesis of many cancers. The roles of H4R in oral epithelial dysplasia (OED) and oral tongue squamous cell carcinoma (OTSCC) are unknown. The purpose of this study was to assess H4R expression in OTSCC patients and in OTSCC-derived cell lines. METHODS: Biopsies taken from OED, OTSCC and healthy oral mucosa were studied by immunostaining...
June 26, 2017: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/28643390/oral-disorders-saliva-secretion-and-oral-health-related-quality-of-life-in-patients-with-primary-sj%C3%A3-gren-s-syndrome
#5
Shermin Rusthen, Alix Young, Bente B Herlofson, Lara A Aqrawi, Morten Rykke, Lene H Hove, Øyvind Palm, Janicke L Jensen, Preet B Singh
Chemosensory function, burning sensations in the tongue (BST), halitosis, saliva secretion, and oral health-related quality of life (OHRQoL) were investigated in patients with primary Sjögren's syndrome (pSS). In 31 patients with pSS and 33 controls, olfactory and gustatory functions were evaluated. Self-reported complaints of dysgeusia, BST, and halitosis were recorded. Saliva secretion rates were measured and OHRQoL was assessed using the short-form Oral Health Impact Profile (OHIP-14). Patients had significantly lower olfactory (8...
June 23, 2017: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/28614457/immediate-effects-of-tongue-trills-associated-with-transcutaneous-electrical-nerve-stimulation-tens
#6
Eliana Maria Gradim Fabron, Andressa Schweitzer Petrini, Vanessa de Moraes Cardoso, João Carlos Torgal Batista, Suely Mayumi Motonaga, Viviane Cristina de Castro Marino
Purpose: To investigate vocal quality variability after applying tongue trills associated with transcutaneous electrical nerve stimulation (TENS) on the larynx of women with normal laryngeal function. Additionally, to verify the effect of this technique over time on voice quality. Methods: Participants were 40 women (average 23.4 years) without vocal complaints. The procedure involved tongue trills with or without TENS for 3 minutes, rest and repeating the technique for another 2 minutes...
June 8, 2017: CoDAS
https://www.readbyqxmd.com/read/28612077/neuronavigated-high-frequency-repetitive-transcranial-magnetic-stimulation-for-chronic-post-stroke-dysphagia-a-randomized-controlled-study
#7
Ivy K Y Cheng, Karen M K Chan, Chun-Sing Wong, Leonard S W Li, Karen M Y Chiu, Raymond T F Cheung, Edwin M L Yiu
OBJECTIVE: There are potential benefits of repetitive transcranial magnetic stimulation (rTMS) in improving swallowing functions after stroke; however, few studies have been performed in the chronic stroke population. This study aims to distil the key effects of rTMS on swallowing functions and swallowing-related quality of life. METHODS: Twenty-two participants with chronic post-stroke dysphagia were randomly assigned into active or sham rTMS groups. Seven participants withdrew from the study, thus data from 15 participants (mean age 64...
May 30, 2017: Journal of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28607750/noninvasive-tongue-stimulation-combined-with-intensive-cognitive-and-physical-rehabilitation-induces-neuroplastic-changes-in-patients-with-multiple-sclerosis-a-multimodal-neuroimaging-study
#8
Gabriel Leonard, Yves Lapierre, Jen-Kai Chen, Rima Wardini, Joelle Crane, Alain Ptito
BACKGROUND: Multiple sclerosis (MS) patients have central nervous system (CNS) lesions that may impede cognitive and sensorimotor function. Few rehabilitative therapies are available. OBJECTIVES: The objective of this paper is to study effects of noninvasive tongue stimulation using the Portable Neuromodulation Stimulator (PoNS™) combined with intensive cognitive and physical rehabilitation on working memory, gait, balance and concomitant changes in the brain...
January 2017: Multiple Sclerosis Journal—Experimental, Translational and Clinical
https://www.readbyqxmd.com/read/28556188/effect-of-transcranial-direct-current-stimulation-on-neuroplasticity-in-corticomotor-pathways-of-the-tongue-muscles
#9
Mohit Kothari, Peter W Stubbs, Krystian Figlewski, Asger R Pedersen, Jim Jensen, Lene Baad-Hansen, Peter Svensson, Jørgen F Nielsen
To investigate effects of transcranial direct current stimulation (tDCS) on neuroplasticity in corticomotor pathways related to tongue muscles evoked by a training task using the Tongue Drive System (TDS). Using a cross-over design, 13 healthy participants completed two sessions of tDCS while performing 30 min of TDS training. Sessions were spaced at least 2 weeks apart and participants randomly received anodal and sham tDCS stimulation in the first session and the other condition in the second session. Single and paired pulse transcranial magnetic stimulation was used to elicit motor evoked potentials (MEPs) of the tongue at three time-points; before, immediately after and 30 min after training...
May 28, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28526071/retinoid-acid-induced-microrna-31-5p-suppresses-myogenic-proliferation-and-differentiation-by-targeting-camkii%C3%AE
#10
Bo Liu, Chao Liu, Wei Cong, Nan Li, Nan Zhou, Yi Tang, Chao Wei, Han Bai, Ying Zhang, Jing Xiao
BACKGROUND: We previously reported that Wnt5a/CaMKIIδ (calcium/calmodulin-dependent protein kinase II delta) pathway was involved in the embryonic tongue deformity induced by excess retinoic acid (RA). Our latest study found that the expression of miR-31-5p, which was predicted to target the 3'UTR of CamkIIδ, was raised in the RA-treated embryonic tongue. Thus, we hypothesized that the excess RA regulated Wnt5a/CaMKIIδ pathway through miR-31-5p in embryonic tongue. METHODS: C2C12 myoblast line was employed as an in vitro model to examine the suppression of miR-31-5p on CamkIIδ expression, through which RA impaired the myoblast proliferation and differentiation in embryonic tongue...
May 11, 2017: Skeletal Muscle
https://www.readbyqxmd.com/read/28521453/nicotine-may-promote-tongue-squamous-cell-carcinoma-progression-by-activating-the-wnt-%C3%AE-catenin-and-wnt-pcp-signaling-pathways
#11
Chengze Wang, Xin Xu, Hairu Jin, Gangli Liu
To investigate the effects and the possible underlying mechanisms of nicotine stimulation on tongue squamous cell carcinoma (TSCC) progression, a TSCC cell line Cal27 and 34 samples of paraffin-embedded TSCC were examined. Immunofluorescence, western blot analysis, and TOP/FOP flash, CCK-8, wound healing and Transwell invasion assays were used to evaluate Cal27 in response to nicotine stimulation. We also investigated expression levels of related proteins of Wnt/β-catenin and Wnt/PCP pathways in paraffin-embedded TSCC samples with or without a history of smoking by immunohistochemistry...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28517962/inhibition-of-the-continuum-of-radiation-induced-normal-tissue-injury-by-a-redox-active-mn-porphyrin
#12
Samuel R Birer, Chen-Ting Lee, Kingshuk Roy Choudhury, Kenneth H Young, Ivan Spasojevic, Ines Batinic-Haberle, James D Crapo, Mark W Dewhirst, Kathleen A Ashcraft
Normal tissue damage after head and neck radiotherapy involves a continuum of pathologic events to the mucosa, tongue and salivary glands. We examined the radioprotective effects of MnBuOE, a redox-active manganese porphyrin, at three stages of normal tissue damage: immediate (leukocyte endothelial cell [L/E] interactions), early (mucositis) and late (xerostomia and fibrosis) after treatment. In this study, mice received 0 or 9 Gy irradiation to the oral cavity and salivary glands ± MnBuOE treatment. Changes in leukocyte-endothelial cell interactions were measured 24 h postirradiation...
July 2017: Radiation Research
https://www.readbyqxmd.com/read/28484380/perceived-intensity-and-discrimination-ability-for-lingual-electrotactile-stimulation-depends-on-location-and-orientation-of-electrodes
#13
Joel Moritz, Philip Turk, John D Williams, Leslie M Stone-Roy
Malfunctioning sensory systems can severely impact quality of life and repair is not always possible. One solution, called sensory substitution, is to use another sensory system to bring lost information to the brain. This approach often involves the use of bioengineered devices that electrically stimulate somatosensory fibers. Interestingly, the tongue is an ideal location for electrotactile stimulation due to its dense innervation, moisture, and protected environment. Success with transmitting visual and vestibular information through the tongue indicates promise for future applications...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28481721/s-oralis-activates-the-efg1-filamentation-pathway-in-c-albicans-to-promote-cross-kingdom-interactions-and-mucosal-biofilms
#14
Hongbin Xu, Takanori Sobue, Martinna Bertolini, Angela Thompson, Margaret Vickerman, Clarissa J Nobile, Anna Dongari-Bagtzoglou
Candida albicans and Streptococcus oralis are ubiquitous oral commensal organisms. Under host-permissive conditions these organisms can form hypervirulent mucosal biofilms. C. albicans biofilm formation is controlled by 6 master transcriptional regulators: Bcr1, Brg1, Efg1, Tec1, Ndt80, and Rob1. The objective of this work was to test whether any of these regulators play a role in cross-kingdom interactions between C. albicans and S. oralis in oral mucosal biofilms, and identify downstream target gene(s) that promote these interactions...
May 8, 2017: Virulence
https://www.readbyqxmd.com/read/28454080/relevance-of-ccl3-ccr5-axis-in-oral-carcinogenesis
#15
Janine Mayra da Silva, Tálita Pollyanna Moreira Dos Santos, Lays Martin Sobral, Celso Martins Queiroz-Junior, Milene Alvarenga Rachid, Amanda E I Proudfoot, Gustavo Pompermaier Garlet, Aline Carvalho Batista, Mauro Martins Teixeira, Andréia Machado Leopoldino, Remo Castro Russo, Tarcília Aparecida Silva
The chemokine CCL3 is a chemotactic cytokine crucial for inflammatory cell recruitment in homeostatic and pathological conditions. CCL3 might stimulate cancer progression by promoting leukocyte accumulation, angiogenesis and tumour growth. The expression of CCL3 and its receptors CCR1 and CCR5 was demonstrated in oral squamous cell carcinoma (OSCC), but their role was not defined. Here, the functions of CCL3 were assessed using a model of chemically induced tongue carcinogenesis with 4-nitroquinoline-1-oxide (4NQO)...
April 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28412164/diagnosis-and-management-of-oropharyngeal-dysphagia-among-older-persons-state-of-the-art
#16
REVIEW
Omar Ortega, Alberto Martín, Pere Clavé
Oropharyngeal dysphagia (OD) is a condition recognized by the World Health Organization and defined as the difficulty or inability to move a bolus safely and effectively from the oral cavity to the esophagus, and can include aspirations, choking, and residue. OD is pandemic among different phenotypes of older people, affecting between 27% and 91% of the population 70 years or older. Although OD can be diagnosed by well-defined clinical methods and complementary explorations, in the clinical setting OD is seldom systematically screened and treated, and awareness among the medical/geriatric community is scarce...
April 12, 2017: Journal of the American Medical Directors Association
https://www.readbyqxmd.com/read/28400725/cortical-mechanisms-of-tongue-sensorimotor-functions-in-humans-a-review-of-the-magnetoencephalography-approach
#17
REVIEW
Hitoshi Maezawa
The tongue plays important roles in a variety of critical human oral functions, including speech production, swallowing, mastication and respiration. These sophisticated tongue movements are in part finely regulated by cortical entrainment. Many studies have examined sensorimotor processing in the limbs using magnetoencephalography (MEG), which has high spatiotemporal resolution. Such studies have employed multiple methods of analysis, including somatosensory evoked fields (SEFs), movement-related cortical fields (MRCFs), event-related desynchronization/synchronization (ERD/ERS) associated with somatosensory stimulation or movement and cortico-muscular coherence (CMC) during sustained movement...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28399391/cd163-positive-macrophages-within-the-tumor-stroma-are-associated-with-lymphangiogenesis-and-lymph-node-metastasis-in-oral-squamous-cell-carcinoma
#18
Yuko Yamagata, Hirofumi Tomioka, Kei Sakamoto, Kiyoshi Sato, Hiroyuki Harada, Tohru Ikeda, Kou Kayamori
PURPOSE: Increasing evidence shows that tumor stromal components, particularly tumor-associated macrophages (TAMs), play an important role in the tumor progression of various solid malignant tumor types. However, their roles in oral squamous cell carcinoma (OSCC) have not been fully elucidated. MATERIALS AND METHODS: Seventy human tongue OSCC samples were analyzed in the present study. Immunohistochemistry was used to investigate the correlations between the densities of CD68-, CD163-, and CD204-positive TAMs and clinicopathologic parameters...
March 18, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28382034/neutrophil-extracellular-traps-of-cynoglossus-semilaevis-production-characteristics-and-antibacterial-effect
#19
Ming-Li Zhao, Heng Chi, Li Sun
Neutrophil extracellular traps (NETs) are structures released by neutrophils as a cellular immune defense against microbial invasion. The process of NETs generation, netosis (NETosis), can take place via either a suicidal mechanism, during which the NETs-releasing cells became dead, or a "live" mechanism, during which the NETs-releasing cells remain vital. NETosis has been studied intensively in mammals in recent years, but very little is known about the NETosis in fish. In this study, we examined NETosis in tongue sole (Cynoglossus semilaevis), a species of teleost with important economic values...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28378061/tongue-surgeries-for-pediatric-obstructive-sleep-apnea-a-systematic-review-and-meta-analysis
#20
REVIEW
Macario Camacho, Michael W Noller, Soroush Zaghi, Lauren K Reckley, Camilo Fernandez-Salvador, Erika Ho, Brandyn Dunn, Dylan Chan
OBJECTIVES: To evaluate the international literature for studies reporting outcomes for obstructive sleep apnea (OSA) in children undergoing isolated tongue surgeries. METHODS: Two authors searched from inception through November 14, 2016 in four databases including PubMed/MEDLINE. RESULTS: 351 studies were screened. Eleven studies (116 children) met criteria. Most children were syndromic and had craniofacial disorders, co-morbidities, or other serious medical issues...
August 2017: European Archives of Oto-rhino-laryngology
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