Publications by authors named "Rivkin A"

Hyaluronic acid (HA) fillers are a relatively safe and effective means of cosmetic treatment for the face; however, as the numbers of both patients and injectors continue to rise, reports of adverse events (AEs) and ischemia are increasing. Although visual complications and stroke are the most-feared AEs, skin and underlying tissue necrosis is far more common and can be catastrophic. HA can be dissolved with hyaluronidase, but this does not always resolve ischemia.

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  • * Despite the benefits, they face challenges like understanding different faculty cultures, managing workload equity, and dealing with mistrust from other departments.
  • * The establishment of the Multi-Professional Health Care Administrative Leaders Connect Community aims to facilitate networking and mentorship, while further research is needed to explore optimal organizational models and best practices.
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Objective: To outline an approach to help students achieve Entrustable Professional Activities (EPAs) entrustment during a sequence of Advanced Pharmacy Practice Experiences (APPEs) by implementing longitudinal monitoring and individualized intervention and remediation strategies.

Methods: Using the recommended EPAs within the core APPEs (acute care, ambulatory care, community, institutional), students were expected to achieve entrustment on all EPAs by graduation. A longitudinal monitoring approach, using an "EPA report card," was implemented to continuously identify students at risk of not meeting the EPA requirement of "Level 3" entrustment (perform with reactive supervision).

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Spacecraft observations revealed that rocks on carbonaceous asteroids, which constitute the most numerous class by composition, can develop millimeter-to-meter-scale fractures due to thermal stresses. However, signatures of this process on the second-most populous group of asteroids, the S-complex, have been poorly constrained. Here, we report observations of boulders' fractures on Dimorphos, which is the moonlet of the S-complex asteroid (65803) Didymos, the target of NASA's Double Asteroid Redirection Test (DART) planetary defense mission.

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Images collected during NASA's Double Asteroid Redirection Test (DART) mission provide the first resolved views of the Didymos binary asteroid system. These images reveal that the primary asteroid, Didymos, is flattened and has plausible undulations along its equatorial perimeter. At high elevations, its surface is rough and contains large boulders and craters; at low elevations its surface is smooth and possesses fewer large boulders and craters.

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Asteroids smaller than 10 km are thought to be rubble piles formed from the reaccumulation of fragments produced in the catastrophic disruption of parent bodies. Ground-based observations reveal that some of these asteroids are today binary systems, in which a smaller secondary orbits a larger primary asteroid. However, how these asteroids became binary systems remains unclear.

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The bearing capacity - the ability of a surface to support applied loads - is an important parameter for understanding and predicting the response of a surface. Previous work has inferred the bearing capacity and trafficability of specific regions of the Moon using orbital imagery and measurements of the boulder tracks visible on its surface. Here, we estimate the bearing capacity of the surface of an asteroid for the first time using DART/DRACO images of suspected boulder tracks on the surface of asteroid (65803) Didymos.

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Article Synopsis
  • Planetary defense research is heavily dependent on understanding the mechanical properties of asteroids, which are challenging to assess from Earth.
  • A study of boulders on the asteroid Dimorphos, using data from the DART mission, revealed an estimated internal friction angle of 32.7 ± 2. 5°, indicating they likely formed from impact processing.
  • The similarities between Dimorphos boulders and those on other rubble-pile asteroids (Itokawa, Ryugu, and Bennu) suggest a shared formation process and enhance our understanding of asteroid characteristics and the implications for planetary defense strategies.
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  • Anal squamous cell carcinoma (SCC) is a rare cancer typically treated with the Nigro protocol, combining chemotherapy and radiation, but older radiation techniques can lead to serious long-term complications like radiation necrosis.
  • A case was presented involving a 66-year-old woman who, 18 years after undergoing treatment for anal SCC, developed severe necrosis of her pelvic organs and serious infections due to previous radiation therapy.
  • The case emphasizes the need for careful monitoring of patients who underwent older radiation treatments for possible late-onset complications, and the importance of prompt and thorough intervention when these issues arise to minimize health risks.
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Background: A well-defined jawline improves overall facial aesthetics, motivating patients to seek jawline augmentation.

Objectives: In this study we evaluated the safety and effectiveness of the hyaluronic acid injectable gel VYC-25L for restoring jawline definition.

Methods: In a US multicenter, evaluator-blinded study adults with grade 2 (moderate) or 3 (severe) Allergan Loss of Jawline Definition Scale (ALJDS) scores were randomized.

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Developing orally bioavailable drugs demands an understanding of absorption in early drug development. Traditional methods and physicochemical properties optimize absorption for rule of five (Ro5) compounds; beyond rule of five (bRo5) drugs necessitate advanced tools like the experimental measure of exposed polarity (EPSA) and the AbbVie multiparametric score (AB-MPS). Analyzing AB-MPS and EPSA against ∼1000 compounds with human absorption data and ∼10,000 AbbVie tool compounds (∼1000 proteolysis targeting chimeras or PROTACs, ∼7000 Ro5s, and ∼2000 bRo5s) revealed new patterns of physicochemical trends.

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Background: Microgenia resulting from congenital deficiency or aging can significantly affect the facial profile and render it less attractive. This study assessed the effectiveness of treatment with incobotulinumtoxinA (Inco) and calcium hydroxylapatite with integral lidocaine (CaHA[+]) for improving chin profile.

Methods: Subjects with a hyperactive mentalis and at least moderate chin retrusion according to the Asian Chin Projection Scale (ACPS) were recruited.

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The Double Asteroid Redirection Test (DART) had an impact with Dimorphos (a satellite of the asteroid Didymos) on 26 September 2022. Ground-based observations showed that the Didymos system brightened by a factor of 8.3 after the impact because of ejecta, returning to the pre-impact brightness 23.

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Muir-Torre syndrome (MTS) is a rare subtype of hereditary nonpolyposis colorectal cancer syndrome caused by a defect in DNA mismatch repair leading to microsatellite instability. It is characterized by the presence of at least one sebaceous gland tumor and one internal malignancy, most commonly colorectal and endometrial tumors. These patients have a high propensity for tumorigenesis, and while strict screening protocols are in place, there are only two cases that describe the management approach to recurrent colon cancer.

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Background: Hyaluronic acids (HAs) continue to be the fillers of choice worldwide and their popularity is growing. Adverse events (AEs) are able to be resolved through the use of hyaluronidase (HYAL). However, routine HYAL use has been at issue due to perceived safety issues.

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Single-cell analyses parse the brain's billions of neurons into thousands of 'cell-type' clusters residing in different brain structures. Many cell types mediate their functions through targeted long-distance projections allowing interactions between specific cell types. Here we used epi-retro-seq to link single-cell epigenomes and cell types to long-distance projections for 33,034 neurons dissected from 32 different regions projecting to 24 different targets (225 source-to-target combinations) across the whole mouse brain.

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Background: Since its discovery as a facial aesthetic treatment >30 years ago, onabotulinumtoxinA has received worldwide approval for dynamic upper facial line treatment.

Objective: Meta-analysis examining the safety of onabotulinumtoxinA for treatment of glabellar lines (GL), crow's feet lines (CFL), and forehead lines (FHL).

Methods: Participants ( = 5298) with moderate to severe GL, CFL, or FHL at maximum contraction received onabotulinumtoxinA or placebo in 1 of 18 registration studies (14 double-blind, placebo-controlled [DBPC]; 1 double-blind; 3 open-label).

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Background: Facial filler injection techniques that help decrease the risk of vascular occlusion are an important growing area of study. This study demonstrates a model of injecting fillers into a simulated bifurcated arterial system, using different sized needle gauges at a constant injection pressure.

Methods: Three facial fillers were injected into a bifurcated intravenous tubing with continuous irrigation at a constant pressure to simulate a vascular system.

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Purpose: To determine if glaucoma medications are associated with pregnancy and/or postnatal complications.

Methods: Multicenter descriptive survey. Subjects were female patients 18-45 years who were previously pregnant with a diagnosis of glaucoma or ocular hypertension prior to pregnancy.

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Single-cell sequencing could help to solve the fundamental challenge of linking millions of cell-type-specific enhancers with their target genes. However, this task is confounded by patterns of gene co-expression in much the same way that genetic correlation due to linkage disequilibrium confounds fine-mapping in genome-wide association studies (GWAS). We developed a non-parametric permutation-based procedure to establish stringent statistical criteria to control the risk of false-positive associations in enhancer-gene association studies (EGAS).

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Objective: This study evaluates the impact of offering a clinical decision-making and problem-solving course to students academically challenged in early required clinical and pharmaceutical calculation courses on improving their ability to identify and solve drug-related problems.

Methods: Faculty designed a course with a main objective for students with grades of C or lower in any of the 5 required first-year courses to gain plentiful practice with a systematic approach to identifying and solving drug therapy problems. Students' performance on course-embedded assessments mapped to problem-solver subdomain, a pre-Advanced Pharmacy Practice Experience (APPE) competency on the ability to identify drug-related problems, and performance on Pharmacy Curriculum Outcomes Assessment were compared to a control group of students from 2 previous cohorts who did not take the course but had a subpar academic performance.

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Complexity of medical treatments can vary from prescribing medicine for a specific ailment to managing a complex set of simultaneous medical issues. In the latter case, doctors are assisted by clinical guidelines which outline standard medical procedures, tests, treatments, etc. To facilitate the use of such guidelines, they can be digitized as processes and adopted in complex process engines offering additional help to health providers such as decision support while monitoring active treatments so as to detect flaws in treatment procedures and suggest possible reactions on them.

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