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https://www.readbyqxmd.com/read/28214516/saturation-of-long-term-potentiation-in-the-dorsal-cochlear-nucleus-and-its-pharmacological-reversal-in-an-experimental-model-of-tinnitus
#1
Thomas Tagoe, Daniel Deeping, Martine Hamann
Animal models have demonstrated that tinnitus is a pathology of dysfunctional excitability in the central auditory system, in particular in the dorsal cochlear nucleus (DCN) of the brainstem. We used a murine model and studied whether acoustic over-exposure leading to hearing loss and tinnitus, affects long-term potentiation (LTP) at DCN multisensory synapses. Whole cell and field potential recordings were used to study the effects on release probability and synaptic plasticity, respectively in brainstem slices...
February 15, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28214147/simultaneous-idiopathic-bilateral-sudden-hearing-loss-characteristics-and-response-to-treatment
#2
Ferit Akil, Umur Yollu, Mehmet Yilmaz, H Murat Yener, Marlen Mamanov, Ender Inci
INTRODUCTION: The aetiology of sudden hearing loss is poorly defined; however, infectious, vascular and neoplastic aetiologies are presumed to be responsible. In addition, the aetiology of bilateral sudden hearing loss is also unknown. OBJECTIVE: The objective of this study is identify the characteristics and treatment response of simultaneous bilateral sudden hearing loss. METHODS: This is a case-control study that practised in tertiary care academic centre...
January 24, 2017: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/28214051/effects-of-a-straw-phonation-protocol-on-acoustic-measures-of-an-satb-chorus-singing-two-contrasting-renaissance-works
#3
Jeremy N Manternach, Chad Clark, James F Daugherty
BACKGROUND: Researchers have found that semi-occluded vocal tract (SOVT) exercises may increase vocal economy by reducing phonation threshold pressure and effort while increasing or maintaining consistent acoustic output. This research has focused solely on individual singers. Much singing instruction, however, takes place in choral settings. Choral singers may use different resonance strategies or unconsciously adjust their singing based on the ability to hear their own sound in relation to others...
February 14, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28214024/long-term-outcomes-of-endolymphatic-sac-shunting-with-local-steroids-for-meniere-s-disease
#4
Cameron C Wick, Nauman F Manzoor, Caileigh McKenna, Maroun T Semaan, Cliff A Megerian
OBJECTIVES: To evaluate the long-term efficacy of endolymphatic sac shunt techniques with and without local steroid administration. STUDY DESIGN: Retrospective case series and patient survey. SETTING: Tertiary university hospital. PATIENTS: Meniere's disease (MD) patients that failed medical therapy and subsequently underwent an endolymphatic sac shunt procedure. All patients had definitive or probable MD and at least 18-months of follow-up...
January 20, 2017: American Journal of Otolaryngology
https://www.readbyqxmd.com/read/28213869/persistence-of-touch-dna-on-burglary-related-tools
#5
Céline M Pfeifer, Peter Wiegand
Experts are increasingly concerned by issues regarding the activity level of DNA stains. A case from our burglary-related casework pointed out the need for experiments regarding the persistence of DNA when more than one person touched a tool handle. We performed short tandem repeat (STR) analyses for three groups of tools: (1) personal and mock owned tools; (2) tools, which were first "owned" by a first user and then handled in a burglary action by a second user; and (3) tools, which were first owned by a first user and then handled in a moderate action...
February 6, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28213135/genetic-variants-in-the-peripheral-auditory-system-significantly-affect-adult-cochlear-implant-performance
#6
A Eliot Shearer, Robert W Eppsteiner, Kathy Frees, Viral Tejani, Christina M Sloan-Heggen, Carolyn Brown, Paul Abbas, Camille Dunn, Marlan R Hansen, Bruce J Gantz, Richard J H Smith
BACKGROUND: Cochlear implantation is an effective habilitation modality for adults with significant hearing loss. However, post-implant performance is variable. A portion of this variance in outcome can be attributed to clinical factors. Recent physiological studies suggest that the health of the spiral ganglion also impacts post-operative cochlear implant outcomes. The goal of this study was to determine whether genetic factors affecting spiral ganglion neurons may be associated with cochlear implant performance...
February 14, 2017: Hearing Research
https://www.readbyqxmd.com/read/28213134/speech-in-noise-perception-in-musicians-a-review
#7
REVIEW
Emily B J Coffey, Nicolette Mogilever, Robert J Zatorre
The ability to understand speech in the presence of competing sound sources is an important neuroscience question in terms of how the nervous system solves this computational problem. It is also a critical clinical problem that disproportionally affects the elderly, children with language-related learning disorders, and those with hearing loss. Recent evidence that musicians have an advantage on this multifaceted skill has led to the suggestion that musical training might be used to improve or delay the decline of speech-in-noise (SIN) function...
February 14, 2017: Hearing Research
https://www.readbyqxmd.com/read/28213099/polymeric-nanoparticles-loaded-with-dexamethasone-or-%C3%AE-tocopheryl-succinate-to-prevent-cisplatin-induced-ototoxicity
#8
Sergio Martín-Saldaña, Raquel Palao-Suay, María Rosa Aguilar, Rafael Ramírez-Camacho, Julio San Román
: The aim of this work is the development of highly protective agents to be administered locally within the middle ear to avoid cisplatin-induced ototoxicity, which affects to 100% of the clinical patients at ultra-high concentrations (16 mg/kg). The protective agents are based on polymeric nanoparticles loaded with dexamethasone or α-tocopheryl succinate as anti-inflammarory and anti-apoptotic molecules. Dexamethasone and α-tocopheryl succinate are poorly soluble in water and present severe side effects when systemic administered during long periods of time...
February 14, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28212886/primary-ameloblastoma-of-the-temporal-bone
#9
Andro Košec, Jakov Ajduk, Mihael Ries, Robert Trotić
Ameloblastoma is a locally aggressive tumor derived from odontogenic epithelium. Although benign, its clinical behavior can often exhibit malignant characteristics. It is marked by slow and persistent growth with infiltration of adjacent tissues. Almost 70% occur in the mandible in patients older than 30 years. Recurrence of ameloblastoma from inadequate treatment is frequent. Because of its slow growth, recurrences can present decades after primary surgery. A primary ameloblastoma in an area outside the mandibular, maxillary, and infratemporal fossa regions has not been described in detail to date, with only 1 possible case mentioned in the literature...
January 24, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28212476/-cartilage-island-versus-temporalis-fascia-in-high-risk-tympanic-perforation
#10
Carmen Lucía Durán-Padilla, Jaime Martínez-Chávez, Norma Amador-Licona, Texar Alfonso Pereyra-Nobara
BACKGROUND: The tympanoplasty for high-risk tympanic membrane perforation is a challenge. It is necessary to compare the most useful and feasible surgical technics in our environment for these patients. The objective was to compare the cartilage island tympanoplasty for the treatment of high-risk tympanic membrane perforations versus the use of temporalis fascia. METHODS: Randomized controlled clinical trial in 69 patients of ten years or older, diagnosed with high-risk tympanic membrane perforation in a third level hospital...
2017: Revista Médica del Instituto Mexicano del Seguro Social
https://www.readbyqxmd.com/read/28212161/hearing-impairment-and-the-amelioration-of-avoidable-medical-error-a-cross-sectional-survey
#11
Patrick Henn, Colm OʼTuathaigh, Darrelle Keegan, Simon Smith
OBJECTIVES: Hearing loss contributes to suboptimal medical treatment. We investigated the nature and magnitude of potential health-care harm of hearing loss alone on a patient's understanding of medical consultations, investigations, and treatments of health conditions unrelated to their hearing loss. METHODS: A cross-sectional, questionnaire-based design of a convenience sample of students with hearing loss, registered with the institutional disability support service in 8 Irish and 15 UK third-level institutions...
February 16, 2017: Journal of Patient Safety
https://www.readbyqxmd.com/read/28211470/transient-auditory-nerve-demyelination-as-a-new-mechanism-for-hidden-hearing-loss
#12
Guoqiang Wan, Gabriel Corfas
Hidden hearing loss (HHL) is a recently described auditory neuropathy believed to contribute to speech discrimination and intelligibility deficits in people with normal audiological tests. Animals and humans with HHL have normal auditory thresholds but defective cochlear neurotransmission, that is, reduced suprathreshold amplitude of the sound-evoked auditory nerve compound action potential. Currently, the only cellular mechanism known for HHL is loss of inner hair cell synapses (synaptopathy). Here we report that transient loss of cochlear Schwann cells results in permanent auditory deficits characteristic of HHL...
February 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/28211461/a-xandarellid-artiopodan-from-morocco-a-middle-cambrian-link-between-soft-bodied-euarthropod-communities-in-north-africa-and-south-china
#13
Javier Ortega-Hernández, Abdelfattah Azizi, Thomas W Hearing, Thomas H P Harvey, Gregory D Edgecombe, Ahmid Hafid, Khadija El Hariri
Xandarellida is a well-defined clade of Lower Palaeozoic non-biomineralized artiopodans that is exclusively known from the early Cambrian (Stage 3) Chengjiang biota of South China. Here we describe a new member of this group, Xandarella mauretanica sp. nov., from the middle Cambrian (Stage 5) Tatelt Formation of Morocco, making this the first non-trilobite Cambrian euarthropod known from North Africa. X. mauretanica sp. nov. represents the youngest occurrence of Xandarellida - extending its stratigraphic range by approximately 10 million years - and expands the palaeobiogeographic distribution of the group to the high southern palaeolatitudes of West Gondwana...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28211317/primary-human-cytomegalovirus-hcmv-infection-in-pregnancy
#14
Horst Buxmann, Klaus Hamprecht, Matthias Meyer-Wittkopf, Klaus Friese
BACKGROUND: In 0.5-4% of pregnancies, the prospective mother sustains a primary infection with human cytomegalovirus (HCMV). An HCMV infection of the fetus in the first or second trimester can cause complex post-encephalitic impairment of the infant brain, leading to motor and mental retardation, cerebral palsy, epilepsy, retinal defects, and progressive hearing loss. METHODS: This review is based on pertinent publications from January 2000 to October 2016 that were retrieved by a selective search in PubMed employing the terms "cytomegalovirus and pregnancy" and "congenital cytomegalovirus...
January 27, 2017: Deutsches Ärzteblatt International
https://www.readbyqxmd.com/read/28211175/systematic-review-and-meta-analysis-of-the-association-of-autism-spectrum-disorder-in-visually-or-hearing-impaired-children
#15
Belinda Do, Paige Lynch, Elena-Marie Macris, Brianna Smyth, Stephanie Stavrinakis, Stephen Quinn, Paul A Constable
PURPOSE: To determine whether there is an association with a congenital visual or hearing impairment (VI or HI) and Autism Spectrum Disorder (ASD) in children. METHODS: A systematic literature review was performed using nine relevant databases limited to peer reviewed articles in English between 1994 and January 2016. The search identified 1248 articles after duplicates were removed with subsequent screening of the abstracts excluding a further 1199, resulting in 49 full-text articles that were then independently assessed by five of the authors with a final 15 articles meeting the inclusion criteria...
March 2017: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://www.readbyqxmd.com/read/28211069/mglur1-enhances-efferent-inhibition-of-inner-hair-cells-in-the-developing-rat-cochlea
#16
Zhanlei Ye, Juan D Goutman, Sonja J Pyott, Elisabeth Glowatzki
Just before the onset of hearing, the inner hair cells (IHCs) receive inhibitory efferent input from cholinergic medial olivocochlear (MOC) neurons originating in the brainstem. This input may serve a role in the maturation of the ascending (afferent) auditory system by inhibiting spontaneous activity of the IHCs. To investigate the molecular mechanisms regulating these IHC efferent synapses, we combined electrical stimulation of the efferent fibres with patch clamp recordings from the IHCs to measure efferent synaptic strength...
February 17, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28211056/targeted-mass-media-interventions-promoting-healthy-behaviours-to-reduce-risk-of-non-communicable-diseases-in-adult-ethnic-minorities
#17
REVIEW
Annhild Mosdøl, Ingeborg B Lidal, Gyri H Straumann, Gunn E Vist
BACKGROUND: Physical activity, a balanced diet, avoidance of tobacco exposure, and limited alcohol consumption may reduce morbidity and mortality from non-communicable diseases (NCDs). Mass media interventions are commonly used to encourage healthier behaviours in population groups. It is unclear whether targeted mass media interventions for ethnic minority groups are more or less effective in changing behaviours than those developed for the general population. OBJECTIVES: To determine the effects of mass media interventions targeting adult ethnic minorities with messages about physical activity, dietary patterns, tobacco use or alcohol consumption to reduce the risk of NCDs...
February 17, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28210535/magnetic-resonance-imaging-in-a-neurofibromatosis-type-2-patient-with-a-novel-mri-compatible-auditory-brainstem-implant
#18
REVIEW
Matthew Shew, Judson Bertsch, Paul Camarata, Hinrich Staecker
Auditory brainstem implantation has become a key technique for the rehabilitation of hearing in patients with neurofibromatosis type 2. The nature of this devastating genetic disease requires ongoing MRI for the patient's lifespan. Today, most auditory brainstem implants require removal of the magnet that connects the internal device to the external speech processor to undergo imaging as their disease progresses. Patients have the option of having a short procedure to have the magnet taken out and replaced each time, or alternately using a headband to secure the processor over the receiver coil of the internal device...
January 2017: Journal of Neurological Surgery Reports
https://www.readbyqxmd.com/read/28209807/blast-injury-of-the-ear-by-massive-explosion-a-review-of-41-cases
#19
Stanislas Ballivet de Régloix, A Crambert, O Maurin, Q Lisan, S Marty, Y Pons
BACKGROUND: Blast injuries in modern warfare are common, and the ear is often affected as it is an effective pressure transducer. This study aimed to evaluate military blast injuries of the ear. METHODS: From May 2002 to October 2014, all patients referred to two military hospitals near Paris, France following exposure to massive explosions were analysed. RESULTS: Among the 41 patients (82 ears), 36 of them reported tinnitus, 25 hearing loss, 14 earache and 8 vertigo...
February 16, 2017: Journal of the Royal Army Medical Corps
https://www.readbyqxmd.com/read/28209771/hearing-loss-in-children-with-asymptomatic-congenital-cytomegalovirus-infection
#20
Tatiana M Lanzieri, Winnie Chung, Marily Flores, Peggy Blum, A Chantal Caviness, Stephanie R Bialek, Scott D Grosse, Jerry A Miller, Gail Demmler-Harrison
OBJECTIVES: To assess the prevalence, characteristics, and risk of sensorineural hearing loss (SNHL) in children with congenital cytomegalovirus infection identified through hospital-based newborn screening who were asymptomatic at birth compared with uninfected children. METHODS: We included 92 case-patients and 51 controls assessed by using auditory brainstem response and behavioral audiometry. We used Kaplan-Meier survival analysis to estimate the prevalence of SNHL, defined as ≥25 dB hearing level at any frequency and Cox proportional hazards regression analyses to compare SNHL risk between groups...
February 16, 2017: Pediatrics
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