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https://www.readbyqxmd.com/read/28917252/stereotactic-radiosurgery-of-the-brain-a-review-of-common-indications
#1
Philip Gilbo, Isabella Zhang, Jonathan Knisely
Over the past half-century since Lars Leksell first utilized radiation to address deep and difficult to treat lesions of the central nervous system (CNS), intracranial stereotactic radiosurgery (SRS) has become an increasingly valued tool in the hands of neurosurgeons and radiation oncologists. Following developments in medical imaging and radiation technology, radiosurgery has evolved from its first application in movement disorders to widespread use for a varied range of malignant and benign conditions. SRS remains a powerful, minimally invasive instrument that offers additional options for intervention to a diverse patient population...
September 2017: Chinese Clinical Oncology
https://www.readbyqxmd.com/read/28912943/assessment-of-low-level-laser-therapy-effects-after-extraction-of-impacted-lower-third-molar-surgery
#2
Shahrokh Raiesian, Mehdi Khani, Kazem Khiabani, Ershad Hemmati, Mohammad Pouretezad
Introduction: The aim of this study was to assess the effect of low-level laser therapy (LLLT) on pain, swelling and maximum mouth opening in patients undergoing third molar surgery. Methods: A prospective, randomized double-blind study was undertaken on 44 patients at the Dental School, Ahvaz Jundishapur University of Medical Sciences, in 2015. A low-level laser was randomly applied on one of the two sides after surgery of 15 patients. The experimental side received 18 J/cm(2) of energy density, wavelength of 980 nm, and output power of 1...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28912748/editorial-age-related-vestibular-loss-current-understanding-and-future-research-directions
#3
EDITORIAL
Yuri Agrawal
No abstract text is available yet for this article.
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28912091/is-hippocampal-neurogenesis-modulated-by-the-sensation-of-self-motion-encoded-by-the-vestibular-system
#4
REVIEW
Paul F Smith
It is now well accepted that physical exercise stimulates hippocampal neurogenesis and may promote cognitive ability. Less clear are the mechanisms by which this process occurs. One potential contributing influence, that is usually neglected, is the vestibular system, which by its very nature must be activated during physical exercise and which essentially cannot be turned off without complete bilateral vestibular lesions. This paper reviews a small literature that demonstrates that bilateral vestibular loss (BVL) in rats modulates cell proliferation in the dentate gyrus (DG) and that artificial electrical activation of the vestibular system, using galvanic vestibular stimulation, does also...
September 11, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28911857/new-mouse-model-for-inducing-and-evaluating-unilateral-vestibular-deafferentation-syndrome
#5
R Cassel, P Bordiga, D Pericat, C Hautefort, B Tighilet, C Chabbert
BACKGROUND: Unilateral vestibular deafferentation syndrome (uVDS) holds a particular place in the vestibular pathology domain. Due to its suddenness, the violence of its symptoms that often result in emergency hospitalization, and its associated original neurophysiological properties, this syndrome is a major source of questioning for the otoneurology community. Also, its putative pathogenic causes remain to be determined. There is currently a strong medical need for the development of targeted and effective countermeasures to improve the therapeutic management of uVDS...
September 11, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28911803/sensory-overload-and-imbalance-resting-state-vestibular-connectivity-in-ptsd-and-its-dissociative-subtype
#6
Sherain Harricharan, Andrew A Nicholson, Maria Densmore, Jean Théberge, Margaret C McKinnon, Richard W J Neufeld, Ruth A Lanius
BACKGROUND: The vestibular system integrates multisensory information to monitor one's bodily orientation in space, and is influenced by interoceptive awareness. Post-traumatic stress disorder (PTSD) involves typically alterations in interoceptive and bodily self-awareness evidenced by symptoms of hyperarousal, as well as of emotional detachment, including emotional numbing, depersonalization, and derealization. These alterations may disrupt vestibular multisensory integration between the brainstem (vestibular nuclei) and key vestibular cortical regions (parieto-insular vestibular cortex, prefrontal cortex)...
September 11, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28910605/risk-factors-for-postoperative-pneumonia-after-microsurgery-for-vestibular-schwannoma
#7
Chenghong Wang, Tengfei Li, Shaozhou Tang, Yuekang Zhang
OBJECTIVES: Postoperative complications occurred in about 30% patients after vestibular schwannoma (VS) microsurgical excision. Although many specific complications have been extensively studied, postoperative pneumonia (POP) has received little attention. This study was designed to identify the risk factors for POP after microsurgery for VS. PATIENTS AND METHODS: Patients undergoing VS microsurgical resection (n=244) between December 2014 and November 2016 at West China Hospital of Sichuan University were retrospectively assessed for POP...
September 11, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28906242/safe-use-of-acoustic-vestibular-evoked-myogenic-potential-stimuli-protocol-and-patient-specific-considerations
#8
Cory D F Portnuff, Samantha Kleindienst, Jamie M Bogle
BACKGROUND: Vestibular-evoked myogenic potentials (VEMPs) are commonly used clinical assessments for patients with complaints of dizziness. However, relatively high air-conducted stimuli are required to elicit the VEMP, and ultimately may compromise safe noise exposure limits. Recently, research has reported the potential for noise-induced hearing loss (NIHL) from VEMP stimulus exposure through studies of reduced otoacoustic emission levels after VEMP testing, as well as a recent case study showing permanent sensorineural hearing loss associated with VEMP exposure...
September 2017: Journal of the American Academy of Audiology
https://www.readbyqxmd.com/read/28904955/dental-hygiene-and-orthodontics-effect-of-ultrasonic-instrumentation-on-bonding-efficacy-of-different-lingual-orthodontic-brackets
#9
Andrea Scribante, Maria Francesca Sfondrini, Vittorio Collesano, Gaia Tovt, Luisa Bernardinelli, Paola Gandini
Dental hygienists are often faced with patients wearing lingual orthodontic therapy, as ultrasonic instrumentation (UI) is crucial for oral health. As the application of external forces can lead to premature bonding failure, the aim of this study was to evaluate the effect of UI on shear bond strength (SBS) and on adhesive remnant index (ARI) of different lingual orthodontic brackets. 200 bovine incisors were divided into 10 groups. Four different lingual (STB, Ormco; TTR, Rocky Mountain Orthodontics; Idea, Leone; 2D, Forestadent) and vestibular control (Victory, 3M) brackets were bonded...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28904100/influence-of-biases-in-numerical-magnitude-allocation-on-human-pro-social-decision-making
#10
Qadeer Arshad, Yuliya Nigmatullina, Shuaib Siddiqui, Mustafa Franka, Saniya Mediratta, Sanjeev Ramachandaran, Rhannon Lobo, Paresh Malhotra, R Edward Roberts, Adolfo M Bronstein
Over the past decade neuroscientific research has attempted to probe the neurobiological underpinnings of human pro-social decision-making. Such research has almost ubiquitously employed tasks such as the dictator game or similar variations (i.e. ultimatum game). Considering the explicit numerical nature of such tasks, it is surprising that the influence of numerical cognition upon decision-making during task performance remains unknown. Whilst performing these tasks, participants typically tend to anchor upon a 50:50 split that necessitates an explicit numerical judgement (i...
September 13, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28900754/surgery-versus-stereotactic-radiosurgery-for-the-treatment-of-multiple-meningiomas-in-neurofibromatosis-type-2-illustrative-case-and-systematic-review
#11
REVIEW
Thien Nguyen, Lawrance K Chung, John P Sheppard, Nikhilesh S Bhatt, Cheng Hao Jacky Chen, Carlito Lagman, Tania Kaprealian, Percy Lee, Phioanh L Nghiemphu, Isaac Yang
Neurofibromatosis type 2 (NF2) is a genetic neoplastic disorder that presents with hallmark bilateral vestibular schwannomas and multiple meningiomas. Though the current standard of care for meningiomas includes surgery, the multiplicity of meningiomas in NF2 patients renders complete resection of all developing lesions infeasible. Stereotactic radiosurgery (SRS) may be a viable non-invasive therapeutic alternative to surgery. We describe a particularly challenging case in a 39-year-old male with over 120 lesions who underwent more than 30 surgical procedures, and review the literature...
September 13, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28900564/relationships-among-common-vision-and-vestibular-tests-in-healthy-recreational-athletes
#12
John D Heick, Curt Bay, Thomas P Dompier, Tamara C Valovich McLeod
BACKGROUND: Disruption of the visual and vestibular systems is commonly observed following concussion. Researchers have explored the utility of screening tools to identify deficits in these systems in concussed patients, but it is unclear if these tests are measuring similar or distinct phenomena. PURPOSE: To determine the relationships between common vestibular tests including the King-Devick (K-D) test, Sensory Organization Test (SOT), Head Shake-Sensory Organization Test (HS-SOT), and Dynamic Visual Acuity (DVA) test, when administered contiguously, to healthy recreational athletes aged 14 to 24 years...
August 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28899994/heterodimeric-capping-protein-is-required-for-stereocilia-length-and-width-regulation
#13
Matthew R Avenarius, Jocelyn F Krey, Rachel A Dumont, Clive P Morgan, Connor B Benson, Sarath Vijayakumar, Christopher L Cunningham, Deborah I Scheffer, David P Corey, Ulrich Müller, Sherri M Jones, Peter G Barr-Gillespie
Control of the dimensions of actin-rich processes like filopodia, lamellipodia, microvilli, and stereocilia requires the coordinated activity of many proteins. Each of these actin structures relies on heterodimeric capping protein (CAPZ), which blocks actin polymerization at barbed ends. Because dimension control of the inner ear's stereocilia is particularly precise, we studied the CAPZB subunit in hair cells. CAPZB, present at ∼100 copies per stereocilium, concentrated at stereocilia tips as hair cell development progressed, similar to the CAPZB-interacting protein TWF2...
September 12, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/28895650/vestibular-vertical-a-balancing-act-between-the-upper-and-lower-limbs
#14
D A E Bolton, C J Dakin
Our vertical bipedal posture is one of the defining traits that separates us from our phylogenetic peers. Not surprisingly, the mechanisms underlying how we maintain this orientation have come under intense scientific scrutiny. This article is protected by copyright. All rights reserved.
September 12, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28894988/how-tandem-gait-stumbled-into-the-neurological-exam-a-review
#15
Jason Margolesky, Carlos Singer
Tandem gait testing is an integral part of the neurological exam. It is informative in a wide variety of disorders ranging from cerebellar disease to vestibular and peripheral neuropathies, parkinsonism, and other neurodegenerative conditions. We discuss the history and development of tandem gait testing as well as its technique, utility, and limitations in the assessment of neurological conditions. Tandem gait has emerged as a tool in the assessment of cerebellar disease, Huntington disease, idiopathic Parkinson's disease, atypical parkinsonism, peripheral neuropathies, and vestibulopathies...
September 11, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28894835/the-use-of-oculomotor-vestibular-and-reaction-time-tests-to-assess-mild-traumatic-brain-injury-mtbi-over-time
#16
Michael E Hoffer, Carey Balaban, Mikhaylo Szczupak, James Buskirk, Hillary Snapp, James Crawford, Sean Wise, Sara Murphy, Kathryn Marshall, Constanza Pelusso, Sean Knowles, Alex Kiderman
OBJECTIVES: The objective of this work is to examine the outcomes of a set of objective measures for evaluating individuals with minor traumatic brain injury (mTBI) over the sub-acute time period. These methods involve tests of oculomotor, vestibular, and reaction time functions. This work expands upon published work examining these test results at the time of presentation. STUDY DESIGN: This study is a prospective age- and sex-matched controlled study. MATERIALS AND METHODS: The subject group was composed of 106 individuals with mTBI and 300 age- and sex-matched controls without a history of mTBI...
August 2017: Laryngoscope Investigative Otolaryngology
https://www.readbyqxmd.com/read/28893717/secondary-surgical-decompression-of-the-inferior-alveolar-nerve-after-overfilling-of-endodontic-sealer-into-the-mandibular-canal-case-report-and-literature-review
#17
Anne-Victoire Bastien, Jérôme Adnot, Hervé Moizan, Émile Calenda, Olivier Trost
The authors report the case of a 43 year-old woman who underwent endodontic treatment of the right second mandibular molar with substantial extrusion of endodontic material into the mandibular canal. The patient presented at the Department of Oral and Maxillofacial Surgery with a persistent total anaesthesia of the lower lip and chin after two months. 2D panoramic view and 3D CT-scan examination highlighted the overfilling into the mandibular canal with a more than 50% stenosis of the canal and a consequently significant compression of the dental pedicle...
September 8, 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28893312/the-validity-and-reliability-of-the-four-square-step-test-in-different-adult-populations-a-systematic-review
#18
Martha Moore, Karen Barker
BACKGROUND: The four square step test (FSST) was first validated in healthy older adults to provide a measure of dynamic standing balance and mobility. The FSST has since been used in a variety of patient populations. The purpose of this systematic review is to determine the validity and reliability of the FSST in these different adult patient populations. METHODS: The literature search was conducted to highlight all the studies that measured validity and reliability of the FSST...
September 11, 2017: Systematic Reviews
https://www.readbyqxmd.com/read/28892717/predictors-of-hearing-outcomes-following-low-dose-stereotactic-radiosurgery-in-patients-with-vestibular-schwannomas-a-retrospective-cohort-review
#19
Ryh-Hsin Lin, Tang-Chuan Wang, Chia-Der Lin, Hung-Lin Lin, Hsiung-Kwang Chung, Ching-Yuang Wang, Yung-An Tsou, Ming-Hsui Tsai
OBJECTIVES: Hearing deterioration is a major concern for hearing-preserved patients with vestibular schwannomas who are treated with stereotactic radiosurgery (SRS). Thus, determining which patients are more likely to have worse hearing outcomes following SRS may facilitate clinicians in deciding whether conservative policy should be applied in the interest of hearing preservation. This study aimed to define the predictors of hearing outcomes following SRS. PATIENTS AND METHODS: This retrospective study included 100 patients who underwent low-dose SRS (12- to 13-Gy marginal dose) for vestibular schwannomas between January 2004 and January 2014...
September 5, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28891872/vertigo-in-vestibular-schwannoma-patients-due-to-other-pathologies
#20
Ronald Sahyouni, Omid Moshtaghi, Yarah M Haidar, Hossein Mahboubi, Afsheen Moshtaghi, Harrison W Lin, Hamid R Djalilian
OBJECTIVE: To report findings from a cohort of vestibular schwannoma (VS) patients presenting with vertigo from a secondary comorbid vestibular disorder; and to discuss management strategies for this subset of patients presenting with both episodic vertigo and VS. PATIENTS: All VS patients who presented with vertigo as the primary symptom from 2012 to 2015 and endorsing no other major complaints were examined. INTERVENTION: Treatment with migraine lifestyle and prophylactic therapy, or Epley maneuver...
September 7, 2017: Otology & Neurotology
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