Publications by authors named "A Svoronos"

Purpose: To report a case of vision recovery after ocular massage for cosmetic filler-induced ophthalmic artery occlusion.

Observations: A 58-year-old female experienced acute loss of vision of the left eye, left ptosis, and left glabellar skin discoloration immediately after cosmetic filler injection, suggestive of occlusion of the branches of the ophthalmic artery. Highly aggressive, prolonged ocular massage was initiated soon after and followed by a substantial recovery of vision.

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Objective: Aggression from patients and families on health care providers (HCP) is common yet understudied. We measured its prevalence and impact on HCPs in inpatient and outpatient settings.

Methods: Four thousand six hundred seven HCPs employed by a community teaching hospital received an anonymous survey with results analyzed.

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Paradoxically, many microRNAs appear to exhibit entirely opposite functions when placed in different contexts. For example, miR-125b has been shown to be pro-apoptotic in some studies, but anti-apoptotic in others. To investigate this phenomenon, we combine computational modeling with experimental approaches to examine how the function of miR-125b in apoptosis varies with respect to the expression levels of its pro-apoptotic and anti-apoptotic targets.

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A pH-Low Insertion Peptide (pHLIP) is a pH-sensitive peptide that undergoes membrane insertion, resulting in transmembrane helix formation, on exposure to acidity at a tumor cell surface. As a result, pHLIPs preferentially accumulate within tumors and can be used for tumor-targeted imaging and drug delivery. Here we explore the determinants of pHLIP insertion, targeting, and delivery through a computational modeling approach.

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Tumor-targeted drug delivery systems offer not only the advantage of an enhanced therapeutic index, but also the possibility of overcoming the limitations that have largely restricted drug design to small, hydrophobic, "drug-like" molecules. Here, we explore the ability of a tumor-targeted delivery system centered on the use of a pH-low insertion peptide (pHLIP) to directly deliver moderately polar, multi-kDa molecules into tumor cells. A pHLIP is a short, pH-responsive peptide capable of inserting across a cell membrane to form a transmembrane helix at acidic pH.

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