Publications by authors named "Matthew J Smith"

More than 70 million adults in the United States are impacted by osteoarthritis (OA). Symptomatic articular cartilage loss that progresses to debilitating OA is being diagnosed more frequently and earlier in life, such that a growing number of active patients are faced with life-altering healthcare decisions at increasingly younger ages. Joint replacement surgeries, in the form of various artificial arthroplasties, are reliable operations, especially for older (>65 years), more sedentary patients with end-stage OA, but have major limitations for younger, more active patients.

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Background: Advancements in surgical planning, technique, and prosthesis design have improved adaptation to patient anatomy in reverse total shoulder arthroplasty (rTSA). Postoperative changes in deltoid and rotator cuff muscle length are important and may vary based on preoperative indications and prosthesis selection. The purpose of this study is to demonstrate the changes in deltoid and rotator cuff muscle length for planned rTSA using the spectrum of prosthesis configurations in both GHOA and RCA.

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Schizophrenia involves substantial social difficulties, yet their nature remains unclear. Although empathy has been considered a promising social cognition construct, inconsistent findings have undermined its usefulness as a stable index for schizophrenia. This may be because previous studies overlooked the interdependency between the emotional and cognitive components of empathy.

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A number of policies mandate that autistic transition-age youth receive employment services to prepare for the workforce before high school graduation. A key limitation to these services is the job interview component, which relies on non-standardized, resource-intensive, staff-led role-plays to help autistic transition-age youth improve their interview skills. The autism community has called for better job interview preparation.

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  • - Oxylipins are important signaling lipids formed from fatty acids, playing key roles in inflammatory diseases like asthma, but traditional measurement methods may overlook their spatial distribution in tissues.
  • - New mass spectrometry imaging (MSI) techniques, specifically desorption electrospray ionization coupled with triple quadrupole mass spectrometry (DESI-MRM), have improved the sensitivity needed to detect these low-abundance compounds in lung tissues.
  • - This research developed a targeted MSI workflow to map five oxylipins in guinea pig lung extracts, discovering distinct spatial distributions that enhance our understanding of lipid metabolism in respiratory tissues.
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Background: Shoulder arthroplasty has become an increasingly common procedure used to treat degenerative, inflammatory, and traumatic conditions of the glenohumeral joint. With a significant increase in primary anatomic and reverse total shoulder arthroplasty, revision procedures have likewise increased. Updates in shoulder arthroplasty have allowed for the convertibility of implants, which allows for the retention of both glenoid and humeral components during revision surgery.

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Background: Augmented baseplates can be effective at addressing eccentric glenoid wear in reverse total shoulder arthroplasty. However, these implants often come in a limited number of predetermined shapes that require additional reaming to ensure adequate glenoid seating. This typically involves complex instrumentation and can have a negative impact on implant stability.

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RAS GTPases bind effectors to convert upstream cues to changes in cellular function. Effectors of classical H/K/NRAS are defined by RBD/RA domains which recognize the GTP-bound conformation of these GTPases, yet the specificity of RBD/RAs for over 160 RAS superfamily proteins remains poorly explored. We have systematically mapped interactions between BRAF and four RASSF effectors, the largest family of RA-containing proteins, with all RAS, RHO and ARF small GTPases.

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  • Job interview simulators have proven effective in helping transition-age youth with disabilities prepare for employment, based on analysis of data from 558 individuals in 47 schools.
  • The research found that nine virtual interviews balance efficiency with job placement, while 38 interviews yield the best chances for success; these optimal numbers vary based on factors like race and employment history.
  • The study aims to inform better guidelines for using virtual interview training in pre-employment services, while also discussing the limitations and future research directions.
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  • VR-JIT and VIT-TAY programs showed potential in boosting employment for youth with disabilities who are receiving pre-employment services.
  • The preparation for implementing these programs in schools incurred costs, averaging about $1,427 per school for labor and an additional $100 per trainee.
  • Delivery planning and teacher training were the major expenses, signaling that preparation costs could hinder the adoption of these important employment interventions in the future.
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  • - The text discusses a web-based job interview training program designed for students in secondary special education transitioning to the workforce, which uses educational content and virtual hiring managers to teach essential interview skills.
  • - It outlines eight key strategies developed by researchers, teachers, and administrators during studies conducted across 47 schools, aiming to facilitate successful implementation of the program among 561 students.
  • - These strategies focus on preparation for implementation, gaining administrative support, prioritizing training, overcoming logistical issues, integrating with existing curricula, utilizing administrative resources, tailoring support for individual students, and providing virtual training options.
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This paper examines current technology-aided instruction and intervention (TAII) available for autistic transition-age youth (TAY) and existing policies that may support or hinder the delivery of these interventions. Specifically, we focus on policies that might influence the delivery of TAII to autistic TAY. After a careful review of the literature, we observed that postsecondary policy guiding the delivery of TAII designed to support autistic TAY is lacking.

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Background: The job interview can be challenging for autistic adolescents considering the required social communication skills. Further, having decreased awareness of personal strengths may make it difficult to advocate for oneself to a future employer. The purpose of the current pilot randomized controlled trial (RCT) is to examine the preliminary efficacy and feasibility of a combined interventional approach using: the Virtual Interview Tool for Autistic Transition-Age Youth (VIT-TAY) and Kessler Foundation Strength Identification and Expression (KF-STRIDE).

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The American Academy of Orthopaedic Surgeons has developed an Appropriate Use Criteria (AUC) for Treatment of Shoulder Osteoarthritis with Intact Rotator Cuff and Severe Glenoid Retroversion. Evidence-based information, in conjunction with the clinical expertise of physicians, was used to develop the criteria to determine the appropriateness of various treatments of shoulder osteoarthritis with intact rotator cuff and severe glenoid retroversion. The AUC for Treatment of Shoulder Osteoarthritis with Intact Rotator Cuff and Severe Glenoid Retroversion were derived by identifying scenarios evident during the clinical decision-making process on this topic.

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  • The study explores the interactome of 28 ARF and ARL GTPases using a method called BioID, uncovering around 3000 high-confidence interacting proteins.
  • New localizations for ARL4D and ARL10 were identified, along with a unique expression pattern for ARL14 in the stomach and intestines.
  • Functional assays showed that ARL14 can activate PLD1 and play a role in cargo trafficking via the ESCPE-1 complex, contributing to understanding ARF and ARL functions in cellular processes.
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Knowledge of how effectors interact with RAS GTPases is key to understanding how these switch-like proteins function in cells. Effectors bind specifically to GTP-loaded RAS using RAS association (RA) or RAS binding domains (RBDs) that show wide-ranging affinities and thermodynamic characteristics. Both normal development and RAS-induced tumorigenesis depend on multiple distinct effector proteins that are frequently co-expressed and co-localized, suggesting an antagonistic nature to signaling whereby multiple proteins compete for a limited pool of activated GTPase.

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  • Recent studies show that zinc (Zn) is crucial for cardiovascular health, playing a role in protecting blood vessel lining from oxidative stress and regulating nitric oxide synthase.
  • Too much zinc can cause cell death in endothelial cells due to imbalances in antioxidant systems, while zinc deficiency leads to inflammation and heightened adhesion of immune cells.
  • The transcription factor NRF2 is activated by zinc, influencing numerous cellular processes including metabolism, repair, and response to oxidative stress, indicating that zinc levels may be a potential marker for diagnosing and treating related diseases.
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  • Particle-induced osteolysis from polyethylene wear is a major issue causing implant failure in shoulder surgeries, prompting the development of vitamin E-enhanced highly cross-linked polyethylene (VEXPE) to improve wear resistance compared to traditional materials.!* -
  • The study assessed the wear properties of VEXPE against conventional ultrahigh-molecular-weight polyethylene (UHMWPE) under various testing conditions, recording mass loss and determining wear rates, demonstrating superior performance of VEXPE.!* -
  • Results showed that VEXPE glenoid had significantly lower wear rates than both highly cross-linked polyethylene and UHMWPE glenoids, suggesting it may reduce the risk of osteolysis and improve the longevity of shoulder implants.!*
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  • Patients with MYSM1 variants show immune deficiencies and increased radiosensitivity, but the specific role of MYSM1 in DNA damage response remained unclear.* -
  • This study focused on understanding how MYSM1 affects the cellular response to DNA double-stranded breaks, particularly during immunoglobulin gene recombination and exposure to radiation.* -
  • Results indicated that while MYSM1 is crucial for terminating DNA damage responses, it does not impact the generation or repair of DNA breaks themselves.*
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  • Employment is crucial for quality of life, yet autistic individuals face significant challenges in securing jobs, often due to difficulties in job interviews.
  • The study focused on the A-MIRS (adapted Mock Interview Rating Scale), a tool developed to assess job interviewing skills in autistic youth through analyzed video role-plays of job scenarios.
  • Results indicated that the A-MIRS is a reliable and valid measure, demonstrating strong internal consistency and a positive correlation with relevant social skills and employment outcomes.
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Coronary ischemia-reperfusion (IR) injury results from a blockage of blood supply to the heart followed by restoration of perfusion, leading to oxidative stress induced pathological processes. Nuclear factor erythroid 2-related factor 2 (NRF2), a master antioxidant transcription factor, plays a key role in regulating redox signaling. Over the past decades, the field of metallomics has provided novel insights into the mechanism of pro-oxidant and antioxidant pathological processes.

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  • KF-STRIDE is a job interview training tool aimed at young adults on the autism spectrum, focusing on highlighting and expressing their character strengths to potential employers.
  • The study utilized mixed methods, including surveys and interviews, to evaluate the tool's acceptability and usability while identifying areas for improvement.
  • Findings showed the need for enhancements like incorporating life skills and more practice opportunities; the tool was adapted into a web-based format with an animated character to make it more accessible for users.
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  • Non-communicable diseases (NCDs) are a major health issue in the Caribbean, especially in Jamaica, where high consumption of sugar-sweetened beverages (SSBs) is a significant contributor to this problem, influenced by historical and structural factors.
  • The study conducted ethnographic research through interviews and workshops with local health experts, focusing on the historical context of food production and trade, particularly the effects of colonialism and deregulation on SSB consumption.
  • Key findings highlight that the prioritization of sugar as a cash crop, alongside deregulation that favored transnational corporations, has fueled a culture of SSB consumption in Jamaica, undermining public health efforts and emphasizing the need for civil society initiatives to address these challenges.
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Objective: Employment rates among individuals with serious mental illness may be improved by engagement in the individual placement and support (IPS) model of supported employment. Results from a recent randomized controlled trial (RCT) indicate that virtual reality job interview training (VR-JIT) improves employment rates among individuals with serious mental illness who have been actively engaged in IPS for at least 90 days. This study reports on an initial implementation evaluation of VR-JIT during the RCT in a community mental health agency.

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