Abstract:
CONCLUSION:The results suggested mercury (Hg)-induced anomalies in the brainstem-mediated acoustic stapedius muscle reflex in children. OBJECTIVES:Hg exposure has been associated with hearing impairment and brainstem anomalies. Acoustic stapedius reflex (ASR) thresholds, growth functions, decay/adaptation times, and behavioral auditory thresholds were used to screen Andean children and adults for Hg-induced auditory brainstem and facial nerve impairment. METHODS:Fifty-one participants, which included 22 children (aged 6-17 years) and 29 adults (aged 19-83 years) living in gold mining areas of Ecuador where Hg is widely used in amalgamation, were screened using ASR immittance procedures. RESULTS:Mean blood mercury (HgB) level in the children was 15.6 μg/L (SD, 21.3; median, 7 μg/L; range, 2.0-89 μg/L), and in the adults 8.5 μg/L (SD, 7.1; median, 6 μg/L; range, 2.0-32 μg/L). Mean contralateral ASR thresholds (ASRT) for the screening frequency of 2000 Hz in the children (39 ears) was 92.9 dB HL (SD, 6.1; range, 80-105 dB HL), and in the adults (53 ears) 90.0 dB HL (SD, 6.4; range, 65-105 dB HL). The ASRT in the children increased significantly with HgB level (rho = 0.433; p = 0.008).
journal_name
Acta Otolaryngoljournal_title
Acta oto-laryngologicaauthors
Counter SA,Buchanan LH,Ortega Fdoi
10.3109/00016489.2011.617778subject
Has Abstractpub_date
2012-01-01 00:00:00pages
51-63issue
1eissn
0001-6489issn
1651-2251journal_volume
132pub_type
杂志文章abstract::Cochlear blood flow in guinea pigs was assessed using histological assessment of various red blood cell and vessel lumen parameters. Cochlear blood flow was either enhanced by administration of carbogen or inhibited by induced positive airway pressure. The resulting enhancement or reduction of blood flow in the cochle...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016488709109055
更新日期:1987-07-01 00:00:00
abstract::Enzymatic tracer techniques to study normal and pathologic strial capillary transport pose various problems. The use of electron opaque tracers can circumvent many of these problems. Iron dextran (mol. diam 20--70 A) and ferritin (mol. diam 110 A) were injected intravenously and the mice sacrificed at intervals of 1/2...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016488009127103
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journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489709117761
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journal_title:Acta oto-laryngologica
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doi:10.3109/00016488409132935
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更新日期:2007-10-01 00:00:00
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更新日期:1988-01-01 00:00:00
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journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489009125166
更新日期:1990-05-01 00:00:00
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更新日期:2020-12-01 00:00:00
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journal_title:Acta oto-laryngologica
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更新日期:1987-05-01 00:00:00
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journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489.2015.1052983
更新日期:2015-01-01 00:00:00
abstract::The correlation between allergen-induced specific and non-specific (histamine) nasal reactions was studied, especially as regards topical glucocorticosteroid effects on the non-specific reactions. Thirteen patients with strictly seasonal allergic rhinitis participated. A nasal challenge with histamine and three increa...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016488909127508
更新日期:1989-03-01 00:00:00
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doi:10.3109/00016489709113425
更新日期:1997-07-01 00:00:00
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doi:10.3109/00016480802642096
更新日期:2009-11-01 00:00:00
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journal_title:Acta oto-laryngologica
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doi:10.1080/00016489850183548
更新日期:1998-06-01 00:00:00
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pub_type: 杂志文章,随机对照试验
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更新日期:2007-10-01 00:00:00
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journal_title:Acta oto-laryngologica
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doi:10.1080/03655230410017193
更新日期:2004-04-01 00:00:00
abstract::Six profoundly deaf patients were studied with mapping evoked potentials (MEP) using an acoustic signal passed through the vibrotactile prosthesis. This stimulus produced an activation of the central sulcus brain cortex. When the proSthesis was placed in the presenternal area it showed N1 P1 potentials with higher vol...
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doi:10.3109/00016489709117771
更新日期:1997-03-01 00:00:00
abstract::Mucormycosis is a rare acute fatal fungal infection. It is typically observed in diabetic or immunocompromised patients but not in systemically healthy individuals. Here, we describe an unusual mucormycosis case in an immunocompetent patient who had clinical signs of a maxillary sinusitis and associated osteomyelitis ...
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doi:10.1080/00016480500534439
更新日期:2006-09-01 00:00:00
abstract::Using electron microscopy and GABA immunohistochemistry we evaluated the effects on human embyronic organ of Corti tissue culture of exposure to the ototoxic aminoglycoside antibiotic neomycin at a dose of 1 mM for 48 to 96 hrs. Neomycin induces the formation of multilamellar myeloid structures. These lesions, found o...
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doi:10.3109/00016489609137929
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更新日期:2019-02-01 00:00:00
abstract::Several reports have indicated that some cochlear implant patients experience a reduction in their tinnitus while listening to noise or speech. In the present study, two patients reporting bilateral tinnitus were selected from a group of adults with the Nucleus cochlear implant. They rated their tinnitus loudness and ...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489309135811
更新日期:1993-05-01 00:00:00
abstract:CONCLUSION:The endoscopic approaches developed for the treatment of the chordomas according to the different clival location provide the possibility for more complete tumor resection with maximal preservation of anatomic structures and reduction of the overall incidence of complications. OBJECTIVE:The endoscope has re...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016480801995404
更新日期:2009-01-01 00:00:00
abstract::The ultrastructure of the epithelial cells of the endolymphatic duct in the rat is described, following vascular perfusion-fixation of live, anaesthetised and artificially respirated animals. The animals were fixed by means of a pressure feed-back controlled peristaltic pump and an isotonic perfusate-fixative containi...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489409126013
更新日期:1994-01-01 00:00:00
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journal_title:Acta oto-laryngologica
pub_type: 杂志文章,随机对照试验
doi:10.1080/00016489.2019.1575522
更新日期:2019-03-01 00:00:00
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journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016489.2016.1183167
更新日期:2016-10-01 00:00:00
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doi:10.1080/00016480601053099
更新日期:2007-08-01 00:00:00
abstract::The objective of this study was to determine whether methylcobalamin inhibits the ototoxic action of gentamicin. Fourteen pigmented guinea pigs were randomly divided into experimental and control groups. Each animal in the experimental group was given a large single dose of gentamicin (125 mg/kg i.m.), followed by imm...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/000164801300102752
更新日期:2001-04-01 00:00:00
abstract::By using the microsuction technique, quantitative determination of the chemical mediators in nasal secretions was performed in 40 patients with seasonal allergic rhinitis during the pollen season. The aim of this study was to investigate the actual concentrations of these important mediators in nasal secretions during...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489409126103
更新日期:1994-09-01 00:00:00
abstract:CONCLUSION:It is thought that oxidative stress may be the major cause of the increase in the oxide thiol form in the study group. The relationship between oxidative stress status and dynamic thiol/disulphide in nasal polyposis now needs to be investigated. OBJECTIVES:The purpose of this study was to evaluate the relat...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016489.2016.1186833
更新日期:2016-11-01 00:00:00