Publications by authors named "B J Applegate"
Novel therapeutic delivery systems and delivery methods to the inner ear are necessary to treat hearing loss and inner ear disorders. However, numerous barriers exist to therapeutic delivery into the bone-encased and immune-privileged environment of the inner ear and cochlea, which makes treating inner ear disorders challenging. Nanoparticles (NPs) are a type of therapeutic delivery system that can be engineered for multiple purposes, and posterior semicircular canal (PSCC) infusion is a method to directly deposit them into the cochlea.
View Article and Find Full Text PDFBeginning in 2006, optical coherence tomography (OCT) has been adapted for use as a vibrometer for hearing research. The application of OCT in this field, particularly for studying cochlear mechanics, represents a revolutionary advance over previous technologies. OCT provides detailed evidence of the motions of components within the organ of Corti, extending beyond the first-encountered surface of observation.
View Article and Find Full Text PDFGut dysbiosis and an inflamed bowel are growing concerns in mammals, including dogs. Probiotic supplements have been used to restore the natural microbial community and improve gastrointestinal health. Biofilm formation, antimicrobial activities, and immunological responses of probiotics are crucial to improving gut health.
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- Endolymphatic hydrops, an increase in fluid within the cochlea, is a key feature of Meniere's disease, which causes symptoms like vertigo, fluctuating hearing loss, and tinnitus.
- The study explored the relationship between endolymphatic hydrops and cochlear synaptopathy (a type of hearing loss) using imaging techniques on transgenic mice subjected to blast noise and osmotic changes.
- Findings indicated that while both conditions can occur after noise exposure, endolymphatic hydrops does not cause cochlear synaptopathy; instead, they are independent effects resulting from damage to hair cell structures.
Neurofibromatosis type 2 (NF-2) is a dominantly inherited genetic disorder that results from variants in the tumor suppressor gene, neurofibromin 2 (NF2). Here, we report the generation of a conditional zebrafish model of neurofibromatosis established by inducible genetic knockout of nf2a/b, the zebrafish homologs of human NF2. Analysis of nf2a and nf2b expression revealed ubiquitous expression of nf2b in the early embryo, with overlapping expression in the neural crest and its derivatives and in the cranial mesenchyme.
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