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https://www.readbyqxmd.com/read/28811849/meniere-s-disease-and-vestibular-migraine-updates-and-review-of-the-literature
#1
REVIEW
Paul Tabet, Issam Saliba
The diagnosis of Meniere's disease (MD) and vestibular migraine (VM) is primarily based on clinical criteria and their differentiation is often difficult. Currently, there are no known definitive diagnostic tests that can reliably distinguish the two conditions. Patients with MD and patients with VM are treated differently, therefore improving the diagnosis of these two pathologies should avoid errors in management. A systematic review was conducted according to PRISMA guidelines. Medline-Ovid and Embase databases were used to conduct a thorough search of English-language publications dating from 1948 to March 2016...
September 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/28807728/vestibulo-ocular-reflex-abnormality-in-parkinson-s-disease-detected-by-video-head-impulse-test
#2
Wen Lv, Qiongfeng Guan, Xingyue Hu, Jiaqi Chen, Hong Jiang, Lisan Zhang, Weinv Fan
BACKGROUND: Parkinson's disease (PD) is a common neurodegenerative disease characterized by dopaminergic neuronal loss. The underlying cause of PD is unknown. OBJECTIVE: To assess the clinical relevance of vestibular-ocular reflex (VOR) gain in patients with PD, especially those in the early stages. METHODS: Sixty-three PD patients and 56 control healthy individuals were enrolled in this study between Mar 2015 and Aug 2015. VOR gains were determined by video head impulse test (vHIT) device...
August 11, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28807144/regulation-of-l-type-cav1-3-channel-activity-and-insulin-secretion-by-the-cgmp-pkg-signaling-pathway
#3
Alejandro Sandoval, Paz Duran, María A Gandini, Arturo Andrade, Angélica Almanza, Simon Kaja, Ricardo Felix
cGMP is a second messenger widely used in the nervous system and other tissues. One of the major effectors for cGMP is the serine/threonine protein kinase, cGMP-dependent protein kinase (PKG), which catalyzes the phosphorylation of a variety of proteins including ion channels. Previously, it has been shown that the cGMP-PKG signaling pathway inhibits Ca(2+) currents in rat vestibular hair cells and chromaffin cells. This current allegedly flow through voltage-gated CaV1.3L-type Ca(2+) channels, and is important for controlling vestibular hair cell sensory function and catecholamine secretion, respectively...
September 2017: Cell Calcium
https://www.readbyqxmd.com/read/28806327/long-term-quality-of-life-following-vestibular-schwannoma-excision-via-the-translabyrinthine-approach
#4
Stephen J Broomfield, Ashish K Mandavia, Jack S Nicholson, Osama Mahmoud, Andrew T King, Scott A Rutherford, Richard T Ramsden
OBJECTIVE: To assess postoperative quality of life (QOL) and other patient-reported outcomes following surgery for vestibular schwannoma. STUDY DESIGN: Cross-sectional retrospective case review using postal questionnaires. SETTING: Tertiary referral center. PATIENTS: Five hundred consecutive patients undergoing surgery for vestibular schwannoma. INTERVENTION(S): Patients undergoing surgery via the translabyrinthine approach (excluding neurofibromatosis type 2) under the senior author, with a minimum of 5 years follow-up, were included...
September 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28806326/recurrent-vestibular-migraine-vertigo-attacks-associated-with-the-development-of-profound-bilateral-vestibulopathy-a-case-series
#5
Jacob L Wester, Akira Ishiyama, Gail Ishiyama
BACKGROUND: Bilateral vestibulopathy (BVP) is a debilitating condition characterized by gait ataxia, oscillopsia, and imbalance. OBJECTIVE: Case series of patients with migraine-linked vertigo spells and profound BVP. PATIENT 1:: A 69-year-old man presented with a history of recurrent severe vertigo spells lasting up to 3 days in duration associated with prostrating migraine headaches starting at age 60. His symptoms were misdiagnosed as an anxiety syndrome. At age 68, electronystagmography (ENG) revealed bilaterally absent caloric responses and complete BVP...
September 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28802368/study-of-the-effects-of-hearing-on-static-and-dynamic-postural-function-in-children-using-cochlear-implants
#6
Malihah Mazaheryazdi, Abdollah Moossavi, Javad Sarrafzadah, Saeed Talebian, Shohreh Jalaie
OBJECTIVE: The present study aimed to evaluate the postural control perturbations by the center of pressure parameters in two main approaches, cochlear implant turned "on" and "off". METHODS: We included 25 children aged 8-10 years with unilateral cochlear implants and bilateral vestibular hypofunction deficit. To evaluate the postural function, each children was asked to stand on the force plate under 3 different conditions and cochlear implant turned "on" and "off": Condition (A) double stance from open eyes to closed eyes, Condition (B) double stance with open eyes engaging in the dual task and Condition (C) From double leg stance to one leg stance with open eyes for assessment of dynamic postural control...
September 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28800356/factors-associated-with-benign-paroxysmal-positional-vertigo-a-chinese-case-control-study
#7
Junliang Yuan, Jinsheng Dai, William A Li, Wenli Hu
BACKGROUND Benign paroxysmal positional vertigo (BPPV) is one of the most common and most successfully treated vestibular disorders. However, there is a lack of predictive factors for BPPV in clinical practice. We aimed to explore several possible predictive factors for BPPV in the Chinese population. MATERIAL AND METHODS We enrolled 240 patients with BPPV from Beijing Chaoyang Hospital between July 2013 and July 2016. Biochemical and hematological markers were obtained along with the history of cardiovascular and cerebrovascular diseases...
August 11, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28799451/radiological-clinical-and-audiological-evaluation-of-jugular-bulb-vestibular-aqueduct-dehiscence
#8
Asli Tanrivermis Sayit, Muzaffer Elmali, Ozgur Kemal, Yuksel Terzi
OBJECTIVE: The aim of this study is to determine the prevalence of jugular bulb-vestibular aqueduct dehiscence (JBVAD) in patients undergoing temporal bone multidetector computed tomography (MDCT) and assess the relationship between JBVAD and hearing loss with the findings of audiometry. METHODS: About 1503 temporal bone MDCT scans were evaluated for the prevalence of JBVAD. Correlation of the imaging findings and audiometric data was performed. Patients were divided into two groups, those with and those without hearing loss, and were statistically compared...
August 11, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/28799319/ataxia-in-a-young-female
#9
R Jayanthi, K Monica, K Raja, C S Gauthaman, P P Arunkumar
Neurofibromatosis type 2 (NF2) is a genetically inherited disorder characterized by the presence of multiple central nervous system tumours, most pathognomonic being bilateral vestibular schwannomas with or without peripheral manifestations in the form of cataract or cutaneous neurofibromas. NF2 is an uncommon disorder compared to NF1. We describe a classical case of neurofibromatosis type 2 with florid clinical manifestations and characteristic neuroimaging features. We also briefly describe the literature pertaining to this rare disorder...
August 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28798760/striking-the-right-chord-signaling-enigma-during-root-gravitropism
#10
REVIEW
Manjul Singh, Aditi Gupta, Ashverya Laxmi
Plants being sessile can often be judged as passive acceptors of their environment. However, plants are actually even more active in responding to the factors from their surroundings. Plants do not have eyes, ears or vestibular system like animals, still they "know" which way is up and which way is down? This is facilitated by receptor molecules within plant which perceive changes in internal and external conditions such as light, touch, obstacles; and initiate signaling pathways that enable the plant to react...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28798718/vestibular-modulation-of-sympathetic-nerve-activity-to-muscle-and-skin-in-humans
#11
REVIEW
Elie Hammam, Vaughan G Macefield
We review the existence of vestibulosympathetic reflexes in humans. While several methods to activate the human vestibular apparatus have been used, galvanic vestibular stimulation (GVS) is a means of selectively modulating vestibular afferent activity via electrodes over the mastoid processes, causing robust vestibular illusions of side-to-side movement. Sinusoidal GVS (sGVS) causes partial entrainment of sympathetic outflow to muscle and skin. Modulation of muscle sympathetic nerve activity (MSNA) from vestibular inputs competes with baroreceptor inputs, with stronger temporal coupling to the vestibular stimulus being observed at frequencies remote from the cardiac frequency; "super entrainment" was observed in some individuals...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28797517/gynecologic-anatomic-abnormalities-following-anorectal-malformations-repair
#12
Alejandra Vilanova-Sanchez, Carlos A Reck, Kate A McCracken, Victoria A Lane, Alessandra C Gasior, Richard J Wood, Marc A Levitt, Geri D Hewitt
BACKGROUND/AIM: Patients may present with gynecologic concerns after previous posterior sagittal anorectoplasty (PSARP) for repair of an anorectal malformation (ARM). Common findings include an inadequate or shortened perineal body, as well as introital stenosis, retained vaginal septum, and remnant rectovestibular fistula. An inadequate or shortened perineal body may impact fecal continence, sexual function and recommendations regarding obstetrical mode of delivery. We describe our experience with female patients referred to our center for evaluation of their previously repaired ARM, with a specific focus on perineal body anatomy and concomitant gynecologic abnormalities...
July 24, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28796979/anovestibular-fistula-in-an-infant-with-retroviral-infection-case-report
#13
Deepa Makhija, Hemanshi Shah, Charu Tiwari, Jayesh Desale
A vestibular fistula with a normal anus is a rare subtype of anorectal malformation seen more often in East Asia and India. Though mostly congenital, some authors have suggested acquired etiologies for this condition. Infants with retroviral infection have been reported to develop acquired rectovestibular fistulas. We report a case of an infant anovestibular fistula in a patient with retroviral infection.
2017: Developmental Period Medicine
https://www.readbyqxmd.com/read/28796095/intracanalicular-vestibular-schwannomas-initial-clinical-manifestation-imaging-classification-and-risk-stratification-for-management-proposal
#14
Elias Younes, Marion Montava, Mathilde Bachelard-Serra, Laurent Jaloux, Florent Salburgo, Jean Pierre Lavieille
INTRODUCTION: There is no consensus about the use of observation as a therapeutic modality for intracanalicular vestibular schwannoma (ICVS). The objective of this study was to describe tumor evolution, its correlation with initial size, stage of vestibular schwannoma, clinical presentation and to propose a risk classification for tumor growth with a therapeutic decision algorithm. METHODS: Fifty-three patients with ICVS were followed prospectively from 2010 to 2015...
August 8, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28796091/comparing-outcomes-following-salvage-microsurgery-in-vestibular-schwannoma-patients-failing-gamma-knife-radiosurgery-or-microsurgery
#15
Hyun-Jin Lee, Mi Joo Kim, Seung Hyun Koh, Won Seok Chang, In Seok Moon
OBJECTIVE: The increasing use of primary gamma-knife radiosurgery (GKS) for the treatment of vestibular schwannoma (VS) has led to a concomitant increase in the number of patients requiring salvage surgery for GKS failure. When patients underwent GKS as the primary treatment, it is known that dissecting tumor from adjacent nerves during salvage surgery is more difficult. In this report, we share our clinical experience with such patients and analyze the clinical findings of patients with tumor regrowth/recurrence...
August 8, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28796087/hearing-preservation-during-cochlear-implantation-and-electroacoustic-stimulation-in-patients-with-slc26a4-mutations
#16
Kyung Jin Roh, Sera Park, Jin Se Jung, In Seok Moon, Sung Huhn Kim, Mi Young Bang, Jae Young Choi
BACKGROUND AND OBJECTIVES: Patients with SCL26A4 mutations presenting with Mondini deformity and enlarged vestibular aqueduct (EVA) tend to have comparable residual hearing. Although cochlear implantation (CI) produces good results in this group, deterioration of residual hearing can be an adverse event after surgery due to accompanying cochlear malformation and perilymph leakage during cochleostomy. The purpose of this study was to investigate if CI in patients with SCL26A4 mutations via the round window (RW) approach could achieve preservation of residual hearing, and to evaluate their speech reception with electroacoustic stimulation (EAS)...
August 8, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28796086/sensitivity-and-specificity-of-clinical-and-laboratory-otolith-function-tests
#17
Lokesh Kumar, Alok Thakar, Bhaskar Thakur, Kapil Sikka
OBJECTIVE: To evaluate clinic based and laboratory tests of otolith function for their sensitivity and specificity in demarcating unilateral compensated complete vestibular deficit from normal. STUDY DESIGN: Prospective cross-sectional study. SETTING: Tertiary care hospital vestibular physiology laboratory. SUBJECTS: Control group-30 healthy adults, 20-45 years age; Case group-15 subjects post vestibular shwannoma excision or post-labyrinthectomy with compensated unilateral complete audio-vestibular loss...
August 8, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28795949/a-comprehensive-gaze-stabilization-controller-based-on-cerebellar-internal-models
#18
Lorenzo Vannucci, Egidio Falotico, Silvia Tolu, Vito Cacucciolo, Paolo Dario, Henrik Hautop Lund, Cecilia Laschi
Gaze stabilization is essential for clear vision; it is the combined effect of two reflexes relying on vestibular inputs: the vestibulocollic reflex (VCR), which stabilizes the head in space and the vestibulo-ocular reflex (VOR), which stabilizes the visual axis to minimize retinal image motion. The VOR works in conjunction with the opto-kinetic reflex (OKR), which is a visual feedback mechanism that allows to move the eye at the same speed as the observed scene. Together they keep the image stationary on the retina...
August 10, 2017: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/28795618/distribution-of-dental-plaque-and-gingivitis-within-the-dental-arches
#19
Prem K Sreenivasan, Kakarla V V Prasad
Objective The natural accumulation of supragingival plaque on surfaces of human teeth is associated with gingival inflammation and the initiation of common oral diseases. This study evaluated the distribution of dental plaque and gingivitis scores within the dental arches after prophylaxis. Methods Adult subjects from the Dharwad, India area representing the general population who provided written informed consent were scheduled for screening. Healthy subjects over the age of 18 years, not currently requiring any medical or dental care, and presenting with a complement of at least 20 natural teeth were recruited for this parallel design study...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28794847/neuro-otological-and-peripheral-nerve-involvement-in-fabry-disease
#20
Sergio Carmona, Romina Weinschelbaum, Ana Pardal, Cintia Marchesoni, Paz Zuberbuhler, Patricia Acosta, Guillermo Cáceres, Isaac Kisinovsky, Luciana Bayón, Ricardo Reisin
Fabry disease (FD) is an X-linked lysosomal storage disease, with multisystemic glycosphingolipids deposits. Neuro-otological involvement leading to hearing loss and vestibular dysfunctions has been described, but there is limited information about the frequency, site of lesion, or the relationship with peripheral neuropathy. The aim was to evaluate the presence of auditory and vestibular symptoms, and assess neurophysiological involvement of the VIII cranial nerve, correlating these findings with clinical and neurophysiological features of peripheral neuropathy...
July 18, 2017: Audiology Research
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