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Article
Open AccessPowered air-purifying respirators used during the SARS-CoV-2 pandemic significantly reduce speech perception
Due to the coronavirus disease 2019 (COVID-19) pandemic, interventions in the upper airways are considered high-risk procedures for otolaryngologists and their colleagues. The purpose of this study was to eval...
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Article
Open AccessTypical symptoms of common otorhinolaryngological diseases may mask a SARS-CoV-2 infection
Severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2) replicates predominantly in the upper respiratory tract and is primarily transmitted by droplets and aerosols. Taking the medical history for t...
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Article
In vitro comparison of surgical techniques in times of the SARS-CoV-2 pandemic: electrocautery generates more droplets and aerosol than laser surgery or drilling
Based on current knowledge, the SARS-CoV-2 is transmitted via droplet, aerosols and smear infection. Due to a confirmed high virus load in the upper respiratory tract of COVID-19 patients, there is a potential...
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Article
BDNF mRNA expression is significantly upregulated in vestibular schwannomas and correlates with proliferative activity
The expression of neurotrophic factors, such as artemin, glial cell line-derived neurotrophic factor (GDNF), neurturin, transforming growth factors (TGF)-β1/β2 and brain-derived neurotrophic factor (BDNF), is ...
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Article
Stem/Progenitor Cells Derived from the Cochlear Sensory Epithelium Give Rise to Spheres with Distinct Morphologies and Features
Nonmammalian vertebrates regenerate lost sensory hair cells by means of asymmetric division of supporting cells. Inner ear or lateral line supporting cells in birds, amphibians, and fish consequently serve as ...
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Article
Expression of bcl-2 is associated with microvessel density in olfactory neuroblastoma
Erythropoietin (Epo) expression is regulated via hypoxia-inducible factor (HIF)-1α-directed gene transcription. Activation of the erythropoietin receptor (EpoR) by Epo leads to elevated expression of the anti-...
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Article
Extra- and intracranial dumbbell-shaped hemangiopericytoma
Hemangiopericytomas are malignant tumors arising from pericytic cells and account for less than 1% of all vascular neoplasms. We report a rare case of an extra- and intracranial dumbbell-shaped hemangiopericyt...
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Article
3D visualization and simulation of frontoorbital advancement in metopic synostosis
Current multislice computed tomography (CT) technology can be used for diagnosis and surgical planning applying computer-assisted three-dimensional (3D) visualization and surgical simulation. The usefulness of...
