نتایج جستجو برای: ear type
تعداد نتایج: 1376111 فیلتر نتایج به سال:
BACKGROUND Few studies have investigated ear involvement in nonsyndromic autosomal recessive congenital ichthyosis (ARCI). OBJECTIVES To assess the type and frequency of otologic manifestations of ARCI in patients under follow-up at the pediatric dermatology department of our hospital. MATERIALS AND METHODS We prospectively studied the presence of ear pain, ear itching, tinnitus, otitis, ce...
A field study was conducted from 1991 through 1997 to evaluate the use of pyrethroid and organophosphate (OP) ear tags, alternated yearly, for the control of a pyrethroid resistant horn fly, Haematobia irritans (L.), population in Louisiana. Fly resistance was monitored by weekly fly counts, filter paper bioassays and diagnostic polymerase chain reaction (PCR) assays for the presence of pyrethr...
BACKGROUND Total auricular reconstruction in congenital lobule type microtia is one of the most challenging problems faced by a reconstructive surgeon as it demands precise surgical technique combined with artistic creativity. Ear reconstruction requires carefully planned procedures. METHODS We present a simple method for auricular reconstruction consisting of three stages. The first stage is...
Hair cells of the inner ear, the mechanosensory receptors, convert sound waves into neural signals that are passed to the brain via the auditory nerve. Little is known about the molecular mechanisms that govern the development of hair cell-neuronal connections. We ascertained a family with autosomal recessive deafness associated with a common cavity inner ear malformation and auditory neuropath...
Objective: To determine Eustachian tube function in tubotympanic type of chronic ear disease and to correlate Eustachian tube function with pathological change in middle ear mucosa. Materials and Methods: A prospective study of the cases of tubotympanic type of chronic suppurative otitis media was undertaken. Patients were subjected to clinical examination followed by audiometry tests and imped...
OBJECTIVE To find the effect of apolactoferrin administration on the middle and inner ears after experimentally induced pneumococcal otitis media. DESIGN Histopathologic and morphometric analysis of the middle and inner ears. SETTING University of Minnesota, Minneapolis. SUBJECTS Ten chinchillas. INTERVENTIONS The middle ear cavities of chinchillas were inoculated bilaterally with type ...
BACKGROUND The homeobox gene Prox1 is required for lens, retina, pancreas, liver, and lymphatic vasculature development and is expressed in inner ear supporting cells and neurons. METHODOLOGY/PRINCIPAL FINDINGS We have investigated the role of Prox1 in the developing mouse ear taking advantage of available standard and conditional Prox1 mutant mouse strains using Tg(Pax2-Cre) and Tg(Nes-Cre)....
introduction: cholesteatoma is traditionally diagnosed by otoscopic examination and treated by surgery. the necessity for imaging in an uncomplicated case is controversial. this study was planned to investigate the usefulness of a preoperative high-resolution computed tomography (hrct) scan in depicting the status of middle ear structures in the presence of cholesteatoma and also to compare the...
Mutations giving rise to anatomical defects in the inner ear have been isolated in a large scale screen for mutations causing visible abnormalities in the zebrafish embryo (Haffter, P., Granato, M., Brand, M. et al. (1996) Development 123, 1-36). 58 mutants have been classified as having a primary ear phenotype; these fall into several phenotypic classes, affecting presence or size of the otoli...
Microtia is the complete absence of auricular tissues. Total reconstruction of the ear is one of the most difficult problems is reconstructive surgery. Classical multi-staged reconstructions can achieve satisfactory results but they require multiple hospitalizations and high cost. The ideal would be reconstruction of a life-like ear in one operation. Yeguang Song from China has done one stage t...
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