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https://www.readbyqxmd.com/read/29792920/inner-ear-drug-delivery-recent-advances-challenges-and-perspective
#1
Jinsong Hao, S Kevin Li
Effective and safe treatment of auditory and vestibular diseases has become increasingly dependent on inner ear drug delivery systems. This review highlights recent advances in inner ear drug delivery research and technologies. The focus is on strategies to overcome delivery barriers and to improve drug residence and targeting, with special attention to in vivo animal and human studies. The research in gene and stem cell delivery to the inner ear is briefly reviewed. Newly developed research tools to address experimental challenges and safety issues are discussed...
May 21, 2018: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29792303/recurrent-spontaneous-vertigo-with-interictal-headshaking-nystagmus
#2
Sun-Uk Lee, Jeong-Yoon Choi, Hyo-Jung Kim, Ji-Soo Kim
OBJECTIVE: To define a disorder characterized by recurrent spontaneous vertigo (RSV) of unknown etiology and interictal headshaking nystagmus (HSN). METHODS: We characterized HSN in 35 patients with RSV-HSN compared to that recorded in randomly selected patients with compensated vestibular neuritis (VN), vestibular migraine (VM), and Ménière disease (MD). RESULTS: The estimated time constant (TC) of the primary phase of HSN was 12 seconds (95% confidence interval [CI] 12-13) in patients with RSV-HSN, which was larger than those in patients with VN (5 seconds, 95% CI 4-5), VM (5 seconds, 95% CI 5-6), or MD (6 seconds, 95% CI 5-6)...
May 23, 2018: Neurology
https://www.readbyqxmd.com/read/29791616/short-and-long-latency-auditory-evoked-potentials-in-individuals-with-vestibular-dysfunction
#3
Valdete Alves Valentins Dos Santos Filha, Mirtes Bruckmann, Michele Vargas Garcia
Purpose Evaluate the auditory pathway at the brainstem and cortical levels in individuals with peripheral vestibular dysfunction. Methods The study sample was composed 19 individuals aged 20-80 years that presented exam results suggestive of Peripheral Vestibular Disorder (PVD) or Vestibular Dysfunction (VD). Participants underwent evaluation of the auditory pathway through Brainstem Auditory Evoked Potentials (BAEP) (short latency) and P1, N1, P2, N2, and P300 cortical potentials (long latency). Results Nine individuals presented diagnosis of VD and 10 participants were diagnosed with PVD...
2018: CoDAS
https://www.readbyqxmd.com/read/29787866/handedness-dependent-functional-organizational-patterns-within-the-bilateral-vestibular-cortical-network-revealed-by-fmri-connectivity-based-parcellation
#4
V Kirsch, R Boegle, D Keeser, E Kierig, B Ertl-Wagner, T Brandt, M Dieterich
Current evidence points towards a vestibular cortex that involves a multisensory bilateral temporo-parietal-insular network with a handedness-dependent hemispheric lateralization. This study aimed to identify handedness-dependent organizational patterns of (lateralized and non-lateralized) functional subunits within the human vestibular cortex areas. 60 healthy volunteers (30 left-handed and 30 right-handed) were examined on a 3T MR scanner using resting state functional MRI (fMRI). The data was analyzed in four major steps using a functional connectivity based parcellation (fCBP) approach: (1) independent component analysis (ICA) on a whole brain level to identify different resting state networks (RSN); (2) creation of a vestibular informed mask from four whole brain ICs that included reference coordinates of the vestibular network extracted from meta-analyses of vestibular neuroimaging experiments; (3) Re-ICA confined to the vestibular informed mask; (4) cross-correlation of the activated voxels within the vestibular subunits (parcels) to each other (P-to-P) and to the whole-brain RSN (P-to-RSN)...
May 19, 2018: NeuroImage
https://www.readbyqxmd.com/read/29785522/non-invasive-vagus-nerve-stimulation-significantly-improves-quality-of-life-in-patients-with-persistent-postural-perceptual-dizziness
#5
Ozan E Eren, Filipp Filippopulos, Kristina Sönmez, Ken Möhwald, Andreas Straube, Florian Schöberl
Persistent postural-perceptual dizziness (PPPD) is one of the most common causes of chronic vestibular disorders, with a substantial portion of the affected patients showing no significant improvement to standard therapies (i.e., pharmacotherapy, behavioral psychotherapy). Patients with PPPD have been shown to have a significant comorbidity with anxiety disorders and depression. Further, these patients show an activation of the autonomic nervous system resulting in symptoms such as nausea, increase of heart rate, and sweating...
May 21, 2018: Journal of Neurology
https://www.readbyqxmd.com/read/29778098/hydrochlorothiazide-and-risk-of-hearing-disorder-a-case-series
#6
Natnael Belai, Selamawit Gebrehiwet, Yodit Fitsum, Mulugeta Russom
BACKGROUND: Hydrochlorothiazide is not known to cause hearing disorder. The Eritrean Pharmacovigilance Centre, however, has received cases of hearing disorder, including irreversible deafness, associated with hydrochlorothiazide. The aim of this study is, therefore, to assess the causal relationship between hydrochlorothiazide and hearing disorder. METHODS: Data was retrieved from the WHO global adverse drug reaction database, VigiBase™. A search on VigiBase™ was made on August 6, 2017 using "hydrochlorothiazide" as drug substance, and "ototoxicity", "decreased hearing", and "vestibular disorder" as reaction terms...
May 20, 2018: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29769265/reciprocal-negative-regulation-between-lmx1a-and-lmo4-is-required-for-inner-ear-formation
#7
Yanhan Huang, Jennifer Hill, Andrew Yatteau, Loksum Wong, Tao Jiang, Jelena Petrovic, Lin Gan, Lijin Dong, Doris K Wu
LIM-domain containing transcription factors (LIM-TFs) are conserved factors important for embryogenesis. The specificity of these factors in transcriptional regulation is conferred by the complexes they form with other proteins such as LIM-domain-binding (Ldb) proteins and LIM-domain only (LMO) proteins. Unlike LIM-TF, these proteins do not bind DNA directly. LMO are negative regulators of LIM-TF and they function by competing with LIM-TFs for binding to Ldbs. Although the LIM-TF Lmx1a is expressed in the developing mouse hindbrain, which provides many of the extrinsic signals for inner ear formation, conditional knockout embryos of both sexes show that the inner ear source of Lmx1a is the major contributor of ear patterning...
May 16, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29754270/heterozygous-missense-variants-of-lmx1a-lead-to-nonsyndromic-hearing-impairment-and-vestibular-dysfunction
#8
Mieke Wesdorp, Pia A M de Koning Gans, Margit Schraders, Jaap Oostrik, Martijn A Huynen, Hanka Venselaar, Andy J Beynon, Judith van Gaalen, Vitória Piai, Nicol Voermans, Michelle M van Rossum, Bas P Hartel, Stefan H Lelieveld, Laurens Wiel, Berit Verbist, Liselotte J Rotteveel, Marieke F van Dooren, Peter Lichtner, Henricus P M Kunst, Ilse Feenstra, Ronald J C Admiraal, Helger G Yntema, Lies H Hoefsloot, Ronald J E Pennings, Hannie Kremer
Unraveling the causes and pathomechanisms of progressive disorders is essential for the development of therapeutic strategies. Here, we identified heterozygous pathogenic missense variants of LMX1A in two families of Dutch origin with progressive nonsyndromic hearing impairment (HI), using whole exome sequencing. One variant, c.721G > C (p.Val241Leu), occurred de novo and is predicted to affect the homeodomain of LMX1A, which is essential for DNA binding. The second variant, c.290G > C (p.Cys97Ser), predicted to affect a zinc-binding residue of the second LIM domain that is involved in protein-protein interactions...
May 12, 2018: Human Genetics
https://www.readbyqxmd.com/read/29740388/central-lesions-with-selective-semicircular-canal-involvement-mimicking-bilateral-vestibulopathy
#9
REVIEW
Luke Chen, G Michael Halmagyi
Bilateral vestibulopathy (BVP), which is due to peripheral lesions, may selectively involve certain semicircular canal (SCC). Recent eye movement recordings with search coil and video head impulse test (HIT) have provided insight in central lesions that can cause bilateral and selective SCC deficit mimicking BVP. Since neurological signs or ocular motor deficits maybe subtle or absent, it is critical to recognize central lesions correctly since there is prognostic and treatment implication. Acute floccular lesions cause bilateral horizontal SCC (HC) impairment while leaving vertical SCC function unaffected...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29739340/mutation-analysis-of-slc26a4-pendrin-gene-in-a-brazilian-sample-of-hearing-impaired-subjects
#10
Renata Watanabe Nonose, Karina Lezirovitz, Maria Teresa Balester de Mello Auricchio, Ana Carla Batissoco, Guilherme Lopes Yamamoto, Regina Célia Mingroni-Netto
BACKGROUND: Mutations in the SLC26A4 gene are associated with Pendred syndrome and autosomal recessive non-syndromic deafness (DFNB4). Both disorders have similar audiologic characteristics: bilateral hearing loss, often severe or profound, which may be associated with abnormalities of the inner ear, such as dilatation of the vestibular aqueduct or Mondini dysplasia. But, in Pendred syndrome (OMIM #274600), with autosomal recessive inheritance, besides congenital sensorineural deafness, goiter or thyroid dysfunctions are frequently present...
May 8, 2018: BMC Medical Genetics
https://www.readbyqxmd.com/read/29737315/applicability-of-transoral-endoscopic-parathyroidectomy-through-vestibular-route-for-primary-sporadic-hyperparathyroidism-a-south-indian-experience
#11
P R K Bhargav, M Sabaretnam, V Amar, N Vimala Devi
Introduction: Primary hyperparathyroidism is one of the most common endocrine disorders requiring surgical parathyroidectomy for its definitive treatment. Surgical exploration is traditionally performed through conventional open neck approach. A wide range of minimal access and minimally invasive endoscopic techniques (gas less and with gas) have been attempted in the past two decades. In this context, we evaluated the feasibility and safety of an innovative transoral endoscopic parathyroidectomy (EP) technique, which represents a paradigm shift in transluminal endocrine surgery...
May 4, 2018: Journal of Minimal Access Surgery
https://www.readbyqxmd.com/read/29734566/hyperbaric-oxygen-for-post-concussive-symptoms-in-united-states-military-service-members-a-randomized-clinical-trial
#12
Lindell K Weaver, Steffanie H Wilson, Anne S Lindblad, Susan Churchill, Kayla Deru, Robert C Price, Chris S Williams, William W Orrison, James M Walker, Anna Meehan, Susan Mirow
Background: In prior military randomized trials, participants with persistent symptoms after mild traumatic brain injury (TBI) reported improvement regardless of receiving hyperbaric oxygen (HBO₂) or sham intervention. This study's objectives were to identify outcomes for future efficacy trials and describe changes by intervention. Methods: This Phase II, randomized, double-blind, sham-controlled trial enrolled military personnel with mild TBI and persistent post-concussive symptoms...
March 2018: Undersea & Hyperbaric Medicine: Journal of the Undersea and Hyperbaric Medical Society, Inc
https://www.readbyqxmd.com/read/29717977/a-study-of-novel-bilateral-thermal-capsulotomy-with-focused-ultrasound-for-treatment-refractory-obsessive-compulsive-disorder-2-year-follow-up
#13
Se Joo Kim, Daeyoung Roh, Hyun Ho Jung, Won Seok Chang, Chan-Hyung Kim, Jin Woo Chang
BACKGROUND: Recently, a new thermal lesioning approach using magnetic-resonance-guided focused ultrasound (MRgFUS) was introduced for the treatment of neurologic disorders. However, only 2 studies have used this approach for treatment-refractory obsessive-compulsive disorder (OCD), and follow-up was short-term. We investigated the efficacy and safety of bilateral thermal lesioning of the anterior limb of the internal capsule using MRgFUS in patients with treatment-refractory OCD and followed them for 2 years...
May 2, 2018: Journal of Psychiatry & Neuroscience: JPN
https://www.readbyqxmd.com/read/29717643/the-national-institute-of-neurological-disorders-and-stroke-and-department-of-defense-sport-related-concussion-common-data-elements-version-1-0-recommendations
#14
Steven P Broglio, Anthony P Kontos, Harvey Levin, Kathryn Schneider, Elisabeth A Wilde, Robert C Cantu, Nina Feddermann-Demont, Gordon Fuller, Isabelle Gagnon, Gerry Gioia, Christopher C Giza, Grace Sophia Griesbach, John J Leddy, Michael L Lipton, Andrew Mayer, Thomas McAllister, Michael McCrea, Lara McKenzie, Margot Putukian, Stefano Signoretti, Stacy J Suskauer, Robert Tamburro, Michael Turner, Keith Owen Yeates, Roger Zemek, Sherita Ala'i, Joy Esterlitz, Katelyn Gay, Patrick S F Bellgowan, Kristen Joseph
AIM: Through a partnership with the National Institute of Neurological Disorders and Stroke (NINDS), National Institutes of Health (NIH), and Department of Defense (DoD), the development of Sport-Related Concussion (SRC) Common Data Elements (CDEs) was initiated. The aim of this collaboration was to increase the efficiency and effectiveness of clinical research studies and clinical treatment outcomes, increase data quality, facilitate data sharing across studies, reduce study start-up time, more effectively aggregate information into metadata results, and educate new clinical investigators...
May 2, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29710364/psychogenic-dizziness-an-important-but-overlooked-differential-diagnosis-in-the-workup-of-the-dizzy-patient
#15
Zak Kelm, Kimberly Klapchar, Christopher R Kieliszak, Christopher Selinsky
Chronic dizziness can be challenging for both patients and physicians, as a variety of specialists may be consulted and tests ordered before a diagnosis is established. The various potential etiologic processes involved in chronic dizziness require an interdisciplinary approach to care. Common causes include neurologic, vestibular, and cardiac diseases. Psychiatric disorders, however, may be overlooked when establishing a differential diagnosis. This case report illustrates some of the complexities in diagnosing and effectively managing chronic dizziness and serves as a reminder that psychiatric disorders should be considered in the differential diagnosis...
May 1, 2018: Journal of the American Osteopathic Association
https://www.readbyqxmd.com/read/29707579/cognitive-behavior-therapy-as-augmentation-for-sertraline-in-treating-patients-with-persistent-postural-perceptual-dizziness
#16
Yi-Chuan Yu, Hui Xue, Ying-Xin Zhang, Jiying Zhou
Background: Persistent postural-perceptual dizziness (PPPD) is a common vestibular disorder. This study was conducted to assess whether the addition of cognitive behavior therapy (CBT) could significantly improve the efficacy and acceptability of sertraline in treating PPPD. Methods: PPPD patients were recruited and randomly assigned to control and experiment groups. Patients in both groups received sertraline 50-200 mg/day, and only patients in the experiment group received CBT (twice a week, one hour per time)...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29698363/relationship-between-audio-vestibular-functional-tests-and-inner-ear-mri-in-meniere-s-disease
#17
Raphaële Quatre, Arnaud Attyé, Alexandre Karkas, Agnès Job, Georges Dumas, Sébastien Schmerber
OBJECTIVES: Meniere's disease is an inner ear disorder generally attributed to an endolymphatic hydrops. Different electrophysiological tests and imaging techniques have been developed to improve endolymphatic hydrops diagnosis. The goal of our study was to compare the sensitivity and the specificity of delayed inner ear magnetic resonance imaging (MRI) after intravenous injection of gadolinium with extratympanic clicks electrocochleography (EcochG), phase shift of distortion product otoacoustic emissions (shift-DPOAEs), and cervical vestibular-evoked myogenic potentials (cVEMP) for the diagnosis of Meniere's disease...
April 25, 2018: Ear and Hearing
https://www.readbyqxmd.com/read/29695895/randomized-trial-of-betahistine-mesilate-tablets-as-augmentation-for-oxcarbazepine-and-carbamazepine-in-treating-vestibular-paroxysmia
#18
Hui Xue, Wenping Xiang, Yichuan Yu, Guorong Liu, Yi Chong, Jiying Zhou
Background: Vestibular paroxysmia (VP) is a rare episodic peripheral vestibular disorder. This study was conducted to compare the efficacy and acceptability of carbamazepine (CBZ) plus betahistine mesilate tablets (BMT) (CBZ+BMT) and oxcarbazepine (OXC) plus BMT (OXC+BMT) in treating VP, and investigated whether the synergistic effect could be increased along with the increased dose of BMT. Methods: VP patients were recruited and randomly assigned to receive CBZ+BMT or OXC+BMT...
2018: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/29687182/prevalence-and-management-of-post-bppv-residual-symptoms
#19
Cristina Vaduva, Jonathan Estéban-Sánchez, Ricardo Sanz-Fernández, Eduardo Martín-Sanz
OBJECTIVES: To evaluate the prevalence and management of residual symptoms in recovered BPPV patients. METHODS: We performed a retrospective study on BPPV patients of any of the three semicircular canals. Exclusion criteria were multiple-canal BPPV, refractory BPPV, central nervous system pathologies or other vestibular diseases. Patients were treated with repositioning maneuvers until the vertigo disappeared and evaluated for symptoms of instability at 1 month after resolution...
April 23, 2018: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/29685082/peripheral-vestibular-disorders-in-children-and-adolescents-with-concussion
#20
Jacob R Brodsky, Talia N Shoshany, Sophie Lipson, Guangwei Zhou
Objective To review peripheral vestibular disorders in pediatric patients with dizziness following concussion. Study Design Case series with chart review. Setting Pediatric vestibular clinic and pediatric multidisciplinary concussion clinic at a tertiary level pediatric hospital. Subjects and Methods We retrospectively reviewed 109 patients seen for dizziness following a concussion between September 2012 and July 2015. Patients were ≤20 years of age at the time of concussion. Incidences of specific peripheral vestibular disorders were assessed along with timing of diagnosis relative to the date of injury, diagnostic test findings, and treatment interventions associated with those diagnoses...
April 1, 2018: Otolaryngology—Head and Neck Surgery
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