Abstract:
:It has previously been shown that simple compounds with multiple amine groups are ototoxic, the degree of ototoxicity depending on the number of amine groups in the molecule. The relationship between the number of amino groups and ototoxicity in aminoglycoside was studied using kanamycin A and kanamycin B, which contain 4 and 5 amino groups respectively. Forty-five pigmented guinea pigs were injected intratympanically with 0.1 ml of different concentrations of kanamycin A and kanamycin B. The animals were sacrificed 4 days after injection and the organ of Corti was studied by scanning electron microscopy. It was found that on an equimolar basis, kanamycin B (with 5 amino groups) is more cochleotoxic than kanamycin A (with 4 amino groups). The greater cochleotoxic potential of kanamycin B may be explained by the higher cationic nature of the molecule due to protonation of the amino--NH2 groups at physiological pH, resulting in a greater affinity between the drug and the cell membrane.
journal_name
Acta Otolaryngoljournal_title
Acta oto-laryngologicaauthors
Yung MWdoi
10.3109/00016488709134700subject
Has Abstractpub_date
1987-01-01 00:00:00pages
73-80issue
1-2eissn
0001-6489issn
1651-2251journal_volume
103pub_type
杂志文章abstract:CONCLUSIONS:The findings of this study demonstrated that the wait-and-watch strategy for neck metastasis from squamous cell carcinoma (SCC) of oral tongue is a reliable option and that salvage by surgical treatment is effective. However, younger patients should be closely monitored for recurrence. Adjuvant therapy may ...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489.2012.748988
更新日期:2013-05-01 00:00:00
abstract::Critical bandwidths and absolute intensity thresholds were measured in cats before and after kanamycin treatment which induced selective inner and outer hair cell losses. Hair cell losses were measured from cochleograms constructed from surface preparations of the organ of Corti. Results suggested that, for the test f...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016487909137179
更新日期:1979-01-01 00:00:00
abstract::By a careful ENT and oral examination of 111 patients with suspected chronic maxillary sinusitis, the diagnosis was verified in only 56% (62/111). In 29 of these 62 patients (47%) a relation to dental infections was found, periodontitis being as frequent as apical granulomas. In 61% of the patients, in whom the diagn...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016488209130865
更新日期:1982-01-01 00:00:00
abstract::The influence of cigarette smoke on the pharyngeal mucosa was investigated in a clinical study and in an experiment on animals. Histologic reports were evaluated according to the Kambic-Lenart classification of hyperplastic aberrations of the throat mucosa. A close dependence of the degree of hyperplasia and the numbe...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016487809121433
更新日期:1978-01-01 00:00:00
abstract:BACKGROUND:Li quick repositioning maneuver for treatment of geotropic horizontal canal benign paroxysmal positional vertigo (HC-BPPV) was reported in the literature. OBJECTIVE:The aim of this study is to observe the clinical efficacy of the Li quick repositioning maneuver for the treatment of geotropic HC-BPPV. METHO...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章,随机对照试验
doi:10.1080/00016489.2018.1476778
更新日期:2018-09-01 00:00:00
abstract::From a study of nitric oxide (NO) output in the nose and sinuses it seems that: (i) the results obtained regarding the regulation of NO output in the nose do not necessarily apply to the sinuses; (ii) the results obtained for one group of sinuses may not apply to another; and (iii) NO output in the sinuses does not be...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016480510031524
更新日期:2005-10-01 00:00:00
abstract::Cell proliferation in the endolymphatic sac (ES) after immunostimulation was assessed immunohistochemically. Guinea pigs were employed as experimental animals and keyhole limpet hemocyanin was used as the antigen. After i.p. injection of 5-bromo-2'-deoxyuridine (BrdUrd), the BrdUrd+ cells were counted to assess the nu...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489509139336
更新日期:1995-05-01 00:00:00
abstract:INTRODUCTION:This study showed that short and long interval treatments achieved comparable success rates. There was no statistically significant difference in the rate of early and late recurrences between the two groups. Modified Epley maneuver can be applied in a short interval time with comparable success and recurr...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016489.2016.1252852
更新日期:2017-05-01 00:00:00
abstract::The feasibility of furosemide test for the detection of endolymphatic hydrops has previously been discussed (Authors, 1973, 1975). The glycerol test also has been reported as being effective for the same purpose but only in Meniere patients with fluctuating hearing loss (Klockhoff & Lindblom, 1966). In 48 patients wit...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016487709128845
更新日期:1977-03-01 00:00:00
abstract::An experimental model of sinusitis in the rabbit was developed, using type 3 pneumococci. The superior parts of the rabbit maxillary sinuses were surgically exposed and the maxillary ostium was unilaterally blocked. The following day a challenge dose of 10(7)-10(9) colony-forming units of Streptococcus pneumoniae, cap...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:
更新日期:1987-05-01 00:00:00
abstract::On-line measurement of ME gas composition in normal middle ears of 5 anesthetized guinea pigs at an established steady state was performed by mass spectrometry. The mean values for the gas composition of the middle ear were found to be: PN2: 82.4%, PO2: 7.6% and PCO2: 10.0%. This composition is very different from tha...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489309135824
更新日期:1993-05-01 00:00:00
abstract:CONCLUSION:The amendments made to pre-existing transcanal approaches limit the possibility of extrusion of the electrode and reduce the time of 'blind' surgery. OBJECTIVE:Alternative techniques to classic mastoidectomy and posterior tympanotomy for cochlear implantation have already been described but their main drawb...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016480902998299
更新日期:2010-01-01 00:00:00
abstract::The author has proved experimentally (in two dogs) that there is reflex hypertonia of the tensor palati muscle, synchronous with the 'shortening' reaction of the tensor tympani muscle in response to its "static" relaxation during the gradual passive inward displacement of the drum resulting from the negative intratymp...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016487609120926
更新日期:1976-11-01 00:00:00
abstract:CONCLUSION:The results show that the DUET2 offers users speech perception that is equivalent to or better than the DUET. Moreover, the DUET2 offers subjective benefits above those provided by the DUET. BACKGROUND:The DUET is a combination of hearing aid and CI in one device for electric acoustic stimulation. Since its...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489.2015.1050605
更新日期:2015-01-01 00:00:00
abstract:CONCLUSION:Transforming growth factor β1 gene (TGFβ1) genotype is a potential p16 independent prognostic factor predicting response to chemoradiotherapy in head and neck squamous cell carcinoma (HNSCC). OBJECTIVES:Expression of p16 and epidermal growth factor receptor (EGFR) has been reported to be associated with sur...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489.2012.678944
更新日期:2012-09-01 00:00:00
abstract::Experimental animals (cats) were exposed to tones of 125, 1000, 2000, and 4000 Hz at sound pressure levels in the range 120 to 157.5 dB, and for durations of one hour (1000, 2000, 4000 Hz) or four hours (125 Hz). Pure tone audiograms were obtained for each animal before and after exposure. Post-exposure tests were con...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016487509121336
更新日期:1975-11-01 00:00:00
abstract::The possible beneficial effects of carbogen gas (95% O2/5% CO2) inhalation on noise-induced permanent cochlear impairment were investigated. Groups of guinea pigs were exposed to daily 3 1/2-hour presentations of 120 dB of broad-band noise in an atmosphere of either carbogen gas or normal air. Other groups received ca...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016488209130889
更新日期:1982-05-01 00:00:00
abstract:CONCLUSIONS:A new method for noninvasive standard evaluation of normal endolymphatic space and endolymphatic hydrops using magnetic resonance imaging (MRI) is indicated. OBJECTIVE:To standardize the evaluation of endolymphatic space in the cochlea and the vestibule in healthy volunteers by applying noninvasive intraty...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章,随机对照试验
doi:10.3109/00016489.2010.524938
更新日期:2011-03-01 00:00:00
abstract::The vestibulo-ocular reflex (VOR) of the alert rhesus monkey was studied using rotational acceleration in the horizontal plane. Both sinusoidal and pseudorandom binary sequence (PRBS) stimuli were used to perform parameters. Results from sinusoidal studies over the frequency range 0.01 to 1.28 Hz, with stimulus amplit...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016488209130856
更新日期:1982-01-01 00:00:00
abstract:CONCLUSION:A very low dose of dexamethasone (DEX) was as equally as sufficient as a pharmacological dose to decrease eosinophil inflammation in airways and bone marrow. The timing of DEX treatment in relation to allergen challenge was strongly decisive for the outcome of the inflammatory response. OBJECTIVES:We aimed ...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016480802126561
更新日期:2009-02-01 00:00:00
abstract::Laryngeal paragangliomas are rare submucosal lesions that arise from paraganglion cells located in the false vocal fold and subglottic larynx. To date, 76 recognized cases have been reported in the world literature. Symptoms arise when the lesions become large enough to impair function. Supraglottic paragangliomas cau...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章,评审
doi:10.1080/00016480410017576
更新日期:2004-11-01 00:00:00
abstract::Background: Various graft materials and surgical methods are used in the treatment of tympanic membrane perforations.Aims/Objectives: The aim of this study was to evaluate the operation method and graft success of extended perichondrial butterfly myringoplasty performed by an endoscopic method and the hearing gain of ...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016489.2020.1730949
更新日期:2020-04-01 00:00:00
abstract::The efflux of Na-24 was investigated in isolated labyrinths from a membrane section containing stria vascularis and spiral ligament in artificial endolymph medium. The efflux curves were calculated and compartmental analyses were made. The theoretical possibility of a exchange of sodium between compartments connected ...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016487509121308
更新日期:1975-07-01 00:00:00
abstract:CONCLUSION:Cochleostomy is the most efficient approach in delivering PEG-b-PCL polymersomes (PMs) to the inner ear. PMs can be delivered to the vestibule by transtympanic injection or cochleostomy. OBJECTIVE:To evaluate the efficiency of delivering PEG-b-PCL PMs into the inner ear using different approaches. METHODS:...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489.2011.615066
更新日期:2011-12-01 00:00:00
abstract::Background: Incidence of thyroid gland invasion in advanced laryngeal cancers is low. Ipsilateral or total thyroidectomy along with total laryngectomy has been controversial and there has been no consensus over the management of thyroid gland in advanced laryngeal cancers.Objective: To determine the frequency of thyro...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016489.2020.1778786
更新日期:2020-10-01 00:00:00
abstract::We studied the pathological changes in the temporal bone and brainstem, with particular attention to the autolysis of red blood cells in and around the blood vessels, in six cases of brainstem death determined by auditory brainstem responses (ABRs). Our findings showed that the cochlea, the visceral organs and the spi...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489509139287
更新日期:1995-03-01 00:00:00
abstract::Abstract Usage of the Vibrant Soundbridge (VSB) with round window (RW)-Coupler placement at the RW has been shown to successfully treat mixed hearing loss. Coupling between the VSB's floating mass transducer (FMT) and the RW membrane is difficult in the case of sclerosis in the RW and drilling down the bony lip unti...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489.2011.649492
更新日期:2012-06-01 00:00:00
abstract:CONCLUSION:Our results indicate that siRNA E6 and/or E7 may have potential as a gene-specific therapy for human papillomavirus (HPV) type 16 (HPV16)-related squamous cell carcinoma of the head and neck (HNSCC). OBJECTIVES:To evaluate the effectiveness of siRNA targeting E6 and/or E7 on the in vitro and in vivo growth ...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489.2013.773405
更新日期:2013-07-01 00:00:00
abstract:CONCLUSION:The developed software (HITCal) may be a useful tool in the analysis and measurement of the saccadic video head impulse test (vHIT) responses and with the experience obtained during its use the authors suggest that HITCal is an excellent method for enhanced exploration of vHIT outputs. OBJECTIVE:To develop ...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489.2015.1035401
更新日期:2015-09-01 00:00:00
abstract::The existence of primary thyroid sarcomas represents a contentious issue. Some authors believe that thyroid sarcomas are, in fact, anaplastic carcinomas with sarcomatous (spindle cell) features. From the standpoint of treatment and prognosis, the histogenesis of thyroid 'sarcomas' is academic, because these tumors, ir...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016480500527193
更新日期:2008-03-01 00:00:00