نتایج جستجو برای: ear spiral
تعداد نتایج: 70373 فیلتر نتایج به سال:
There are well known differences between males and females in hearing. In the present study, the role of estrogen receptor-beta (ER-beta; listed as ESR2 in the MGI Database) in hearing was investigated by comparing hearing and morphology of the inner ear in ER-beta knock-out mice (ER-beta(-/-)) with that of wild-type (WT) littermates. Hearing was analyzed with auditory brainstem response audiom...
This study is the first to demonstrate that macrophage migration inhibitory factor (MIF), an immune system 'inflammatory' cytokine that is released by the developing otocyst, plays a role in regulating early innervation of the mouse and chick inner ear. We demonstrate that MIF is a major bioactive component of the previously uncharacterized otocyst-derived factor, which directs initial neurite ...
OBJECTIVES Local administration of 3-nitropropionic acid (3-NP) to the inner ear induces sensorineural hearing loss. Several studies have shown the otoprotective effects of ginkgo biloba extract EGb 761. Moreover, EGb 761 has been reported to activate Sirtuin 1 (SIRT1). The present study was designed to investigate whether EGb 761 prevents 3-NP-induced sensorineural hearing loss and determine i...
For patients with profound hearing loss, a cochlear implant is the only treatment available today. The function of a cochlear implant depends in part on the function and survival of spiral ganglion neurons. Following deafferentation, glial cell-derived neurotrophic factor (GDNF) is known to affect spiral ganglion neuron survival. The purpose of this study was to assess delayed GDNF treatment af...
We present a case of deficiency of the superior semicircular canal (SSCD) in a 37 years old patient that came to us because of episodes of subjective vertigo in response to intense sounds (Tullio phenomenon). The audiometry, electronistagmography, timpanometry and stapes reflexes were normal and the fistula test was negative. The CT scan showed an absence of bone overlying the superior semicirc...
Aiming to address the problems of low working efficiency and high damage rate roller peeling equipment in process fresh corn harvesting China, this paper theoretically analyzes mechanical motion between device ear, a high–low roll structure is proposed. This incorporates elastomeric rubber material, segmentation design, an adjustable spiral frame, selection relevant parameters given. To determi...
Mutations and deletions in the gene or upstream of encoding POU3F4 transcription factor cause X-linked progressive deafness DFNX2 additional neurodevelopmental disorders humans. Hearing loss can be purely sensorineural mixed, that is, with both conductive components. Affected males show anatomical abnormalities inner ear, which are jointly defined as incomplete partition type III. Current appro...
Guinea pigs weighing 350 g each were used in this experiment. A small piece of Gelform containing 0.04 mg of E. coli derived endotoxin was set on the round window 24 hours after intraperitoneal injection of 0.02 mg endotoxin. Morphological changes in the cochlea were observed at 24 hours (previous report), 48 hours, 72 hours and 7 days after the introduction of the endotoxin into the middle ear...
Neuropilin-1 (Nrp1) encodes the transmembrane cellular receptor neuropilin-1, which is associated with cardiovascular and neuronal development and was within the peak SNP interval on chromosome 8 in our prior GWAS study on age-related hearing loss (ARHL) in mice. In this study, we generated and characterized an inner ear-specific Nrp1 conditional knockout (CKO) mouse line because Nrp1 constitut...
The flame forming process is widely used to manufacture ship hull plates. The saddle-shaped surfaces have different curvatures in perpendicular angles of planes and the manufacturers face an anti-clastic curvature. In this article, the manufacturing of saddle-shaped surfaces utilizing the flame forming process is investigated. The spiral irradiating scheme is used for forming. In order to study...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید