Abstract:
:Intracellular calcium concentrations ([Ca2+]i) in type I cochlear spiral ganglion cells (SGCs) of the guinea pig were measured by digital imaging microscopy and the Ca(2+)-sensitive dye Fura-2. Extracellular ATP induced elevation of [Ca2+]i in type I SGCs in a concentration-dependent manner. The ATP-induced elevation of [Ca2+]i in SGC was even evident in the Ca(2+)-free solution, thereby suggesting that ATP induces a Ca(2+)-release from intracellular stores in SGCs. Suramin and reactive blue 2, both antagonists for the P2-purinergic receptor, inhibited the [Ca2+]i increase in SGCs induced by extracellular ATP in a dose-dependent manner. Adenosine did not induce any changes of [Ca2+]i in SGC. These results suggest that type I SGCs may possess P2-purinergic receptor but not P1-purinergic receptor. Extracellular ATP induced a [Ca2+]i increase in type I SGCs, with and without neuritic processes, while L-glutamate increased [Ca2+]i in type I SGCs with neuritic processes, but not SGCs without neuritic processes. The ATP-induced [Ca2+]i increase was almost equal in both soma and processes. Therefore, the distribution of P2-purinergic receptor in type I SGCs may be homogeneous in soma and processes. Based on these observations, we suggest that extracellular ATP may act as a neurotransmitter or neuromodulator of the hair cell-afferent nerve synapse in the guinea pig cochlea.
journal_name
Acta Otolaryngoljournal_title
Acta oto-laryngologicaauthors
Cho H,Harada N,Yamashita Tdoi
10.3109/00016489709113435subject
Has Abstractpub_date
1997-07-01 00:00:00pages
545-52issue
4eissn
0001-6489issn
1651-2251journal_volume
117pub_type
杂志文章abstract::The diagnosis and management of spontaneous otogenic pneumocephalus with literature review is described. A young sportsman experienced headache and fluctuating mass in his occiput during increased physical activity. A large extradural intracranial pneumocephalus with corresponding emphysema was imaged on a CT scan. Tr...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章,评审
doi:10.3109/00016489.2010.541941
更新日期:2011-06-01 00:00:00
abstract:CONCLUSION:Compared with normal-weight individuals, obese young adults exhibited a significantly higher taste threshold for salty taste. Smoking also affected taste functions in this population. OBJECTIVE:The aim of this study was to investigate the differences in taste detection thresholds between normal-weight and o...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489.2014.975370
更新日期:2015-05-01 00:00:00
abstract:CONCLUSION:This work demonstrated that juvenile nasopharyngeal angiofibromas (JNAs) express high levels of hormone receptors and vascular endothelial growth factor (VEGF) compared with normal nasal mucosa. The interaction between hormone receptors and VEGF may be involved in the initiation and growth of JNA. OBJECTIVE...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489.2014.952774
更新日期:2015-01-01 00:00:00
abstract::A platinum-iridium electrode with a Teflon cover tube was chronically implanted through the round window into the scala tympani of the guinea pig. Animals were sacrificed at 30 to 40 weeks after electrode implantation, and the cochleae were observed by scanning electron microscopy or with light microscopy. The results...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016488809097005
更新日期:1988-03-01 00:00:00
abstract:OBJECTIVES:In this paper we test the concept of combining electrical stimulation for high-frequency sound with acoustic hearing for low-frequency information in the same ear. In addition, we test whether residual hearing can be preserved when an electrode is placed up to 10 mm into the inner ear, and whether the site o...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016480410016423
更新日期:2004-05-01 00:00:00
abstract::The symptoms, preoperative diagnostic results and histological findings in 34 cerebellopontine angle tumour cases, other than acoustic neuromas, are presented. The meningeomas dominate by far this group of tumours. The symptomatology is much less uniform than that of the acoustic neuromas, where the VIII nerve is domi...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016487609120868
更新日期:1976-07-01 00:00:00
abstract::In order to determine the characteristics of the vestibulo-ocular reflexes (VORs) as a function of age and posturo-motor development, a group of 26 normal children (6 to 25 months old) were tested at three different stages of posturo-motor control: prior to as well as during the first attempts to walk without support,...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:
更新日期:1996-09-01 00:00:00
abstract::In the present study, the protective effect of dexamethasone was analysed following exposure of the cochlea to Pseudomonas aeruginosa Exotoxin A (PaExoA). Four groups of albino Sprague-Dawley rats were used. 20 microl saline was instilled through the tympanic membrane into the round window niche (group A, n = 4); 1 mi...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/000164800750000577
更新日期:2000-03-01 00:00:00
abstract::Although the association between gastroesophageal reflux disease (GERD) and laryngeal disorders in adults is well established there is still a lack of information concerning the true extent of the laryngeal complications of GERD in children. The aim of this study was to determine the laryngeal status of children with ...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/000164802753648213
更新日期:2002-04-01 00:00:00
abstract:CONCLUSION:Because nystagmus induced by ampullopetal inhibition of the posterior semicircular canal (PSCC) rotates around the axis perpendicular to the plane of the anterior semicircular canal (ASCC) of the other side, when free-floating debris is initially located at the distal portion of the PSCC, a patient showing p...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489.2012.763180
更新日期:2013-06-01 00:00:00
abstract::Earlier investigation did not show any clear distinctive pathological features that differentiate vocal polyps from vocal nodules. The light microscopic distinctive features between the two lesions point in the direction of a more pronounced epithelial reaction and a more fibrous stromal change in vocal nodules. In th...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016488809119505
更新日期:1988-05-01 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 experimental use of jejunal free grafts with microvascular anastomosis in the head and neck region has been reported in pharyngeal and esophageal reconstruction. Lack of a suitable animal model has limited basic research for cutaneous or myocutaneous microvascular techniques. This investigation upon appropriate gr...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016488409107574
更新日期:1984-09-01 00:00:00
abstract::The influence of the solitary avian middle ear muscle, the m. stapedius, on auditory sensitivity and sound transmission was investigated in the domestic chicken, Gallus gallus. Electrophysiological recordings of inner ear microphonic potentials (MP) were made in order to determine the effects of calibrated, mechanical...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:
更新日期:1982-09-01 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::Following responses to constant velocity and sinusoidally oscillating movements of the whole visual environment were examined in normal subjects wearing blinkers to obscure central vision or subjected to a photo flash to induce a central scotoma, in patients with central scotomas of pathological origin and in one pati...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016487909126455
更新日期:1979-05-01 00:00:00
abstract:CONCLUSION:Bilateral electric acoustic stimulation (EAS) effectively improved speech perception in noise and sound localization in patients with high-frequency hearing loss. OBJECTIVE:To evaluate bilateral EAS efficacy of sound localization detection and speech perception in noise in two cases of high-frequency hearin...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489.2014.951453
更新日期:2015-02-01 00:00:00
abstract::Outer hair cells (OHCs) are the source of otoacoustic emissions, following a tropomyosin-miosin-dependent contraction, which are regulated by the olivocochlear bundle via the release of acetylcholine (ACh). ACh acts on ACh receptors (AChR) located on the OHC post-synaptic membrane. In myasthenia gravis (M.G.) neuromus...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/000164801300043127
更新日期:2001-01-01 00:00:00
abstract:CONCLUSION:The possible roles of CD44st, CD44v5 and CD44v6 in the prognosis of head and neck cancer deserve further elucidation and evaluation with long-term patient follow-up. OBJECTIVE:Standard CD44 (CD44st), CD44 variant 5 (CD44v5) and CD44 variant 6 (CD44v6) are expressed in human malignant cells and tissues. The ...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016480510026971
更新日期:2005-04-01 00:00:00
abstract::Craniotomy with cerebrospinal fluid (CSF) suction was performed on 18 guinea pigs to determine the effects on the inner ear morphology. Six control animals received anaesthesia only and 12 were operated on with a postoperative survival time of 1 or 24 h. The histologic examinations showed no signs of endolymphatic hyd...
journal_title:Acta oto-laryngologica
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.3109/00016489409126116
更新日期:1994-11-01 00:00:00
abstract:CONCLUSION:An 18-mer peptide derived from the neurotrophic region of prosaposin (PS-pep) prevents hearing loss and cochlear damage due to transient cochlear ischaemia by activating an anti-apoptotic pathway. PS-pep is a potent candidate molecule for alleviating ischaemia-induced hearing loss. OBJECTIVE:PS-pep was inve...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489.2012.750430
更新日期:2013-05-01 00:00:00
abstract::The gas nitric oxide (NO) is present in high concentrations in human nasal airways. Since NO is known to inhibit the growth of bacteria and viruses, it has been suggested that airborne NO represents the first line of defence against pathogens in the upper airways. Low nasal NO levels have been reported previously in p...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/000164800750000676
更新日期:2000-03-01 00:00:00
abstract:CONCLUSIONS:The vestibular function can be assessed by ice-water caloric test, rotational chair test and VEMP recording in severely hearing impaired infants and young children, and 85% of these patients showed abnormal responses in these tests. OBJECTIVES:To evaluate the vestibular function of infants and young childr...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016480601002039
更新日期:2007-07-01 00:00:00
abstract::683 tumour fragments from 63 head and neck carcinoma patients were cultured in vitro. Two laryngeal carcinomas and two salivary gland carcinomas were established into permanent cell lines. Malignancy of these cultured cells was proved by cloning, by chromosomal analysis and by transplantation into athymic (nu/nu) mice...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016488309130956
更新日期:1983-03-01 00:00:00
abstract::243 patients with tumours of the minor salivary glands were analysed clinicopathologically. The palate was the most common location for the lesions. Mixed tumours (pleomorphic adenomas) were the most common benign tumour type. Muco-epidermoid carcinoma and adenoid cystic carcinoma were the dominant types of malignant ...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016488709107802
更新日期:1987-05-01 00:00:00
abstract:CONCLUSION:The incidence of new cases of Meniere's disease (MD) in elderly patients aged 60 years or more was found to have increased over time after correction for age distribution in the overall population. Job- and care-related fatigue may be involved in the recent increase in elderly-onset cases because physical an...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章,多中心研究
doi:10.1080/00016480802112587
更新日期:2009-02-01 00:00:00
abstract::Transitory hearing impairment has been well documented in humans during basilar migraine attacks. Ischemia induced by activation of central nervous system adrenoreceptors by cAMP is one of the mechanisms that has been implicated, as well as calcium metabolism alterations. Propranolol-HCl has proven to be an effective ...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489109137383
更新日期:1991-01-01 00:00:00
abstract:CONCLUSION:Speech thresholds measured using Cantonese Hearing in Noise Test (CHINT) and cortical evoked response audiometry (CERA) thresholds were highly correlated with pure-tone behavioral results. Both tests are considered to provide good estimates of hearing thresholds and can be employed to confirm the degree of h...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016480701642189
更新日期:2008-06-01 00:00:00
abstract:CONCLUSIONS:In computer-assisted analysis of acinic cell cancer (ACC) morphological characteristics of CD34 immunoreactivity were detected. Bigger vessel size, vessel irregularity, and lower intensity of CD34-positive vessel staining may indicate unfavorable prognosis. OBJECTIVES:Salivary gland cancer (SGC) is a morph...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.1080/00016480601053099
更新日期:2007-08-01 00:00:00
abstract::This study was designed to assess the utility of otolith-ocular reflex testing in patients with complete unilateral peripheral vestibular deficits. Ten subjects were given a clinical vestibular test battery (ENG & vertical rotation) and research oriented tests of otolith function including dynamic posturography with h...
journal_title:Acta oto-laryngologica
pub_type: 杂志文章
doi:10.3109/00016489509139392
更新日期:1995-11-01 00:00:00