Publications by authors named "P QUINONES"

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.

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Background: Tolerance of enteral nutrition following percutaneous endoscopic gastrostomy is a barrier to discharge. This study investigated the impact of an expedited feeding protocol following percutaneous endoscopic gastrostomy on postprocedure length of stay (LOS).

Methods: We performed a before-and-after cohort study on hospitalized adults in whom percutaneous endoscopic gastrostomy was placed by surgeons following the implementation of a standardized feeding protocol in which enteral feeds were resumed at the preoperative rate 6 h later.

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Effective, reproducible, and safe delivery of therapeutics into the inner ear is required for the prevention and treatment of hearing loss. A commonly used delivery method is via the posterior semicircular canal (PSCC); however, its specific targeting within the cochlea remains unclear, impacting precision and reproducibility. To assess safety and target specificity, we conducted in vivo recordings of the pharmacological manipulations delivered through the PSCC.

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Article Synopsis
  • 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.
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Rhino-cerebral mucormycosis (RM) is a rare and opportunistic fungal infection observed in immune-compromised patients and metabolic imbalances such as Diabetes Mellitus. RM rapidly infiltrates blood vessels, leading to vascular thrombosis, subsequent tissue necrosis, and high mortality rates (23.6-60%).

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