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https://www.readbyqxmd.com/read/28614812/the-discovery-of-water-channels-aquaporins
#1
Dennis Brown
The movement of water into and out of cells is a fundamental biological process that is essential for life. Such water movement not only regulates the activity of individual cells but also is responsible for the functioning of many organ systems and for maintaining whole body water balance. It had long been suspected that water movement across biological cell membranes was in some way enhanced or facilitated by pores or channels, but the search to identify these channels was long and tedious. As is often the case in science, the secret of the water channel was eventually discovered by chance in 1992 by Peter Agre and his colleagues at the Johns Hopkins University in Baltimore, who were working on red blood cell membrane proteins...
2017: Annals of Nutrition & Metabolism
https://www.readbyqxmd.com/read/28595652/effect-of-cochlear-implant-surgery-on-vestibular-function-meta-analysis-study
#2
REVIEW
Iman Ibrahim, Sabrina Daniela da Silva, Bernard Segal, Anthony Zeitouni
IMPORTANCE: Vestibular disorders have been reported following cochlear implant (CI) surgery, but the literature shows a wide discrepancy in the reported clinical impact. The aim of this meta-analysis is to quantify the effect of CI before and after surgery on the outcomes of vestibular tests, postural stability, and subjective perception of dizziness. OBJECTIVE: To evaluate the effects of CI surgery on vestibular function in adult patients (≥18 years) with sensorineural hearing loss who underwent unilateral or bilateral implantation...
June 8, 2017: Journal of Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28592576/patient-reported-outcome-measures-proms-for-assessing-perceived-listening-effort-in-hearing-loss-protocol-for-a-systematic-review
#3
Sarah E Hughes, Frances L Rapport, Isabelle Boisvert, Catherine M McMahon, Hayley A Hutchings
INTRODUCTION: In the UK, it is estimated that a disabling hearing loss (HL) affects 1 in 6 people. HL has functional, economic and social-emotional consequences for affected individuals. Intervention for HL focuses on improving access to the auditory signal using hearing aids or cochlear implants. However, even if sounds are audible and speech is understood, individuals with HL often report increased effort when listening.Listening effort (LE) may be measured using self-reported measures such as patient-reported outcome measures (PROMs)...
June 6, 2017: BMJ Open
https://www.readbyqxmd.com/read/28582261/validated-smartphone-based-apps-for-ear-and-hearing-assessments-a-review
#4
REVIEW
Tess Bright, Danuk Pallawela
BACKGROUND: An estimated 360 million people have a disabling hearing impairment globally, the vast majority of whom live in low- and middle-income countries (LMICs). Early identification through screening is important to negate the negative effects of untreated hearing impairment. Substantial barriers exist in screening for hearing impairment in LMICs, such as the requirement for skilled hearing health care professionals and prohibitively expensive specialist equipment to measure hearing...
December 23, 2016: JMIR Rehabil Assist Technol
https://www.readbyqxmd.com/read/28548616/pediatric-superior-semicircular-canal-dehiscence-illustrative-case-and-systematic-review
#5
Carlito Lagman, Vera Ong, Lawrance K Chung, Lekaa Elhajjmoussa, Christina Fong, Anthony C Wang, Quinton Gopen, Isaac Yang
OBJECTIVE The purpose of this study is to present an illustrative case of pediatric superior semicircular canal dehiscence (SSCD) and to systematically review the current published literature in the pediatric population. METHODS An electronic search of the Scopus, Web of Science, PsycINFO, Cochrane, and Embase databases was performed by 2 independent authors through January 2017. Search term combinations included "pediatrics," "children," "canal," and "dehiscence." Inclusion criteria were as follows: English, full-text clinical studies, case reports, and case series describing pediatric patient(s) (younger than 18 years) with CT evidence of SSCD...
May 26, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28484666/hearing-and-balance-disorders-in-the-state-of-hawai-i-demographics-and-demand-for-services
#6
Mohsin Ahmed M Shaikh, James W Hall, Cindy McManus, Henry L Lew
Hearing and balance disorders affect people of all ages. Among children, hearing loss affects speech and language development, academic performance, and psychosocial development. Hearing loss in adults negatively impacts work productivity, cognitive function, and psychosocial status. Prevalence of hearing loss in children in Hawai'i is higher than the national average. Research indicates that hearing loss is a prevalent condition among veterans and advanced age adults. This is of particular concern in Hawai'i as the state is home to many military training facilities and has a large elderly population...
May 2017: Hawai'i Journal of Medicine & Public Health: a Journal of Asia Pacific Medicine & Public Health
https://www.readbyqxmd.com/read/28483249/effect-of-gentamicin-and-levels-of-ambient-sound-on-hearing-screening-outcomes-in-the-neonatal-intensive-care-unit-a-pilot-study
#7
Angela C Garinis, Selena Liao, Campbell P Cross, Johnathan Galati, Jessica L Middaugh, Jess C Mace, Anna-Marie Wood, Lindsey McEvoy, Lauren Moneta, Troy Lubianski, Noe Coopersmith, Nicholas Vigo, Christopher Hart, Artur Riddle, Olivia Ettinger, Casey Nold, Heather Durham, Carol MacArthur, Cynthia McEvoy, Peter S Steyger
OBJECTIVE: Hearing loss rates in infants admitted to neonatal intensive care units (NICU) run at 2-15%, compared to 0.3% in full-term births. The etiology of this difference remains poorly understood. We examined whether the level of ambient sound and/or cumulative gentamicin (an aminoglycoside) exposure affect NICU hearing screening results, as either exposure can cause acquired, permanent hearing loss. We hypothesized that higher levels of ambient sound in the NICU, and/or gentamicin dosing, increase the risk of referral on the distortion product otoacoustic emission (DPOAE) assessments and/or automated auditory brainstem response (AABR) screens...
June 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28451532/screening-of-myo7a-mutations-in-iranian-patients-with-autosomal-recessive-hearing-loss-from-west-of-iran
#8
Samira Asgharzade, Somayeh Reiisi, Mohammad Amin Tabatabaiefar, Morteza Hashemzadeh Chaleshtori
BACKGROUND: Hearing loss (HL) is the most frequent neurosensory impairment. HL is highly heterogeneous defect. This disorder affects 1 out of 500 newborns. This study aimed to determine the role of DFNB2 locus and frequency of MYO7A gene mutations in a population from west of Iran. METHODS: Thirty families investigated in Shahrekord University of Medical Sciences in 2014, genetic linkage analysis via four short tandem repeat markers linked to MYO7A was performed for two consanguineous families originating from Hamedan (family-13) and Chaharmahal-Bakhtiari (family-32) provinces of Iran, co-segregating autosomal recessive HL and showed no mutation in GJB2 gene in our preliminary investigation...
January 2017: Iranian Journal of Public Health
https://www.readbyqxmd.com/read/28420925/effect-of-smoking-on-hearing-loss-in-refractory-s-factory-male-worker-with-occupational-noise-exposure-in-iran
#9
Mohammadreza Mofateh, Qasim Karimi, Mohammad Hamed Hosseini, Gholam Reza Sharif-Zadeh
OBJECTIVE: To assess the effect of smoking on hearing loss in factory workers with occupational noise exposure. METHODS: This cross-sectional study was conducted at Birjand University of Medical Sciences, Birjand, Iran, from May to July 2013, and comprised smoking and non-smoking factory male workers. All of them were exposed to occupational noise level more than 85 decibels for at least 10 years. All participants underwent audiometric testing. SPSS 15 was used for data analysis...
April 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28409393/stereotactic-radiosurgery-vs-fractionated-radiotherapy-for-tumor-control-in-vestibular-schwannoma-patients-a-systematic-review
#10
REVIEW
Oscar Persson, Jiri Bartek, Netanel Ben Shalom, Theresa Wangerid, Asgeir Store Jakola, Petter Förander
OBJECTIVE: Repeated controlled studies have revealed that stereotactic radiosurgery is better than microsurgery for patients with vestibular schwannoma (VS) <3 cm in need of intervention. In this systematic review we aimed to compare results from single-fraction stereotactic radiosurgery (SRS) to fractionated stereotactic radiotherapy (FSRT) for patients with VS. DATA SOURCES AND ELIGIBILITY CRITERIA: We systematically searched MEDLINE, Web of Science, Embase and Cochrane and screened relevant articles for references...
June 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28363928/atraumatic-versus-traumatic-lumbar-puncture-needles-a-systematic-review-and-meta-analysis-protocol
#11
Siddharth Nath, Jetan H Badhiwala, Waleed Alhazzani, Farshad Nassiri, Emilie Belley-Cote, Alex Koziarz, Ashkan Shoamanesh, Laura Banfield, Wieslaw Oczkowski, Mike Sharma, Demetrios Sahlas, Kesava Reddy, Forough Farrokhyar, Sheila Singh, Sunjay Sharma, Nicole Zytaruk, Magdy Selim, Saleh A Almenawer
INTRODUCTION: Lumbar puncture is one of the oldest and most commonly performed procedures in medicine, used to diagnose and treat disease. Headache following lumbar puncture remains a frequent complication, causing significant patient discomfort and often requiring narcotic analgesia or invasive therapy. Needle tip design has been proposed to affect the incidence of headache postlumbar puncture, with pencil-point 'atraumatic' needles thought to reduce its incidence in comparison to bevelled 'traumatic' needles...
March 31, 2017: BMJ Open
https://www.readbyqxmd.com/read/28328495/the-modern-cochlear-implant-a-triumph-of-biomedical-engineering-and-the-first-substantial-restoration-of-human-sense-using-a-medical-intervention
#12
REVIEW
Blake S Wilson
Even as recently as the mid-1980s, many experts in otology and auditory science thought that restoration of useful hearing with crude and pervasive electrical stimulation of the cochlea was a fool's dream. The esteemed Prof. Rainer Klinke from Frankfurt (Figure 1) was among the chorus of critics, asserting in 1978 that "from a physiological point of view, cochlear implants will not work." Many others made similar categorical statements.
March 2017: IEEE Pulse
https://www.readbyqxmd.com/read/28301466/genome-editing-bioethics-shows-the-way
#13
Carolyn P Neuhaus, Arthur L Caplan
When some scientists hear the word "bioethics," they break out in intellectual hives. They shouldn't. Good bioethics is about enabling science to move forward. Bioethics pushes scientists to acknowledge that they operate not within a vacuum but within a society in which diverse perspectives and values must be engaged. Bioethicists give voice to those divergent perspectives and provide a framework to facilitate informed and inclusive discussions that spur progress, rather than stall it. The field is needed to advance cutting-edge biomedical research in domains in which the benefits to be had are enormous, such as genome editing, but ethical concerns persist...
March 2017: PLoS Biology
https://www.readbyqxmd.com/read/28300956/hearing-and-speech-sciences-in-educational-environment-mapping-in-brazil-education-work-and-professional-experience
#14
Letícia Corrêa Celeste, Graziela Zanoni, Bianca Queiroga, Luciana Mendonça Alves
Purpose: To map the profile of Brazilian Speech Therapists who report acting in Educational Speech Therapy, with regard to aspects related to training, performance and professional experience. Methods: Retrospective study, based on secondary database analysis of the Federal Council of Hearing and Speech Sciences on the questionnaires reporting acting with Educational Environment. Results: 312 questionnaires were completed, of which 93.3% by women aged 30-39 years...
March 9, 2017: CoDAS
https://www.readbyqxmd.com/read/28264605/vestibular-dys-function-in-children-with-sensorineural-hearing-loss-a-systematic-review
#15
Evi Verbecque, Tessa Marijnissen, Niels De Belder, Vincent Van Rompaey, An Boudewyns, Paul Van de Heyning, Luc Vereeck, Ann Hallemans
OBJECTIVE: The objective of this study is to provide an overview of the prevalence of vestibular dysfunction in children with SNHL classified according to the applied test and its corresponding sensitivity and specificity. DESIGN: Data were gathered using a systematic search query including reference screening. STUDY SAMPLE: Pubmed, Web of Science and Embase were searched. Strategy and reporting of this review was based on the Meta-analysis of Observational Studies in Epidemiology (MOOSE) guidelines...
February 13, 2017: International Journal of Audiology
https://www.readbyqxmd.com/read/28211056/targeted-mass-media-interventions-promoting-healthy-behaviours-to-reduce-risk-of-non-communicable-diseases-in-adult-ethnic-minorities
#16
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/28188279/deaf-hard-of-hearing-and-hearing-signing-undergraduates-attitudes-toward-science-in-inquiry-based-biology-laboratory-classes
#17
Cara Gormally
For science learning to be successful, students must develop attitudes toward support future engagement with challenging social issues related to science. This is especially important for increasing participation of students from underrepresented populations. This study investigated how participation in inquiry-based biology laboratory classes affected students' attitudes toward science, focusing on deaf, hard-of-hearing, and hearing signing students in bilingual learning environments (i.e., taught in American Sign Language and English)...
2017: CBE Life Sciences Education
https://www.readbyqxmd.com/read/28182600/vital-signs-noise-induced-hearing-loss-among-adults-united-states-2011-2012
#18
Yulia I Carroll, John Eichwald, Franco Scinicariello, Howard J Hoffman, Scott Deitchman, Marilyn S Radke, Christa L Themann, Patrick Breysse
INTRODUCTION: The 2016 National Academies of Sciences report "Hearing Health Care for Adults: Priorities for Improving Access and Affordability" included a call to action for government agencies to strengthen efforts to collect, analyze, and disseminate population-based data on hearing loss in adults. METHODS: CDC analyzed the most recent available data collected both by questionnaire and audiometric tests of adult participants aged 20-69 years in the 2011-2012 National Health and Nutrition Examination Survey (NHANES) to determine the presence of audiometric notches indicative of noise-induced hearing loss...
February 10, 2017: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/28180042/brainstem-auditory-evoked-potentials-diagnostic-accuracy-for-hearing-loss-systematic-review-and-meta-analysis
#19
Parthasarathy D Thirumala, Gregory Carnovale, Yoon Loke, Miguel E Habeych, Donald J Crammond, Jeffrey R Balzer, Raymond F Sekula
Background Microvascular decompression (MVD) utilizes brainstem auditory evoked potential (BAEP) intraoperative monitoring to reduce the risk of iatrogenic hearing loss. Studies report varying efficacy and hearing loss rates during MVD with intraoperative monitoring. Objectives This study aims to perform a comprehensive review and study of diagnostic accuracy of BAEPs during MVD to predict hearing loss in studies published from January 1984 to December 2013. Methods The PubMed/MEDLINE and World Science databases were searched...
February 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28091665/trace-element-protein-interactions-in-endolymph-from-the-inner-ear-of-fish-implications-for-environmental-reconstructions-using-fish-otolith-chemistry
#20
Oliver R B Thomas, Katherine Ganio, Blaine R Roberts, Stephen E Swearer
Otoliths, the biomineralised hearing "ear stones" from the inner ear of fish, grow throughout the lifespan of an individual, with deposition of alternating calciferous and proteinaceous bands occurring daily. Trace element : calcium ratios within daily increments measured by laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) are often used in fisheries science to reconstruct environmental histories. There is, however, considerable uncertainty as to which elements are interacting with either the proteinaceous or calciferous zones of the otolith, and thus their utility as indicators of environmental change...
January 16, 2017: Metallomics: Integrated Biometal Science
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