Antibiotic-eluting scaffolds with responsive dual-release kinetics facilitate bone healing and eliminate S. aureus infection.

Osteomyelitis (OM) is a progressive, inflammatory infection of bone caused predominately by Staphylococcus aureus. Herein, we engineered an antibiotic-eluting collagen-hydroxyapatite scaffold capable of eliminating infection and facilitating bone healing. An iterative freeze-drying and chemical crosslinking approach was leveraged to modify antibiotic release kinetics, resulting in a layered dual-release system whereby an initial rapid release of antibiotic to clear infection was followed by a sustained controlled release to prevent reoccurrence of infection.

Implementing evidence-based practices in rural settings: a scoping review of theories, models, and frameworks.

Background: Rural healthcare has unique characteristics that affect the dissemination and implementation of evidence-based interventions. Numerous theories, models, and frameworks have been developed to guide implementation of healthcare interventions, though not specific to rural healthcare. The present scoping review sought to identify the theories, models, and frameworks most frequently applied to rural health and propose an approach to rural health research that harnesses selected constructs from these theories, models, and frameworks.

Oral fluorescein angiography in the diagnosis of paediatric optic nerve abnormalities.

Objective: FFA is a well-established investigation for the diagnosis of optic nerve abnormalities, requiring an intravenous cannula and extended imaging acquisition time. Cannulation can present a challenge in paediatric patients and whilst oral FFA has been used for decades, it has been limited by imaging technology and unconfirmed image acquisition timings. For years, we have used a modern ultra-widefield retinal camera, and established imaging time-points to demonstrate dynamic optic nerve head changes upon ingestion of fluorescein and collected a database of oFFA images for various presentations.

Understanding Medication Nonadherence in Crohn's Disease Patients: A Qualitative Evaluation.

Background: Immune-modifying medications are widely available and recognized as valuable by most gastroenterologists. However, approximately 40% of patients with Crohn's disease (CD) do not comply with regimens using these medications, resulting in complications, hospitalization, and surgeries. We sought to identify factors that motivate adherence or nonadherence with medication recommendations for CD.

Challenging Interactions Between Patients With Severe Health Anxiety and the Healthcare System: A Qualitative Investigation.

Objective: Patients with severe health anxiety have complex interpersonal relationships with medical providers and others in their social context, often resulting in conflictual interactions with providers and perception of poor medical care. An adequate understanding of the causes and consequences of these interactions is lacking, particularly 1 informed by the experience of the patient. This study used qualitative methods to explore the development and maintenance of health anxiety from the perspective of patients with lived experience of coping with health anxiety and their interactions with the healthcare system.

Evaluation of a co-culture of rapidly isolated chondrocytes and stem cells seeded on tri-layered collagen-based scaffolds in a caprine osteochondral defect model.

Cartilage has poor regenerative capacity and thus damage to the joint surfaces presents a major clinical challenge. Recent research has focussed on the development of tissue-engineered and cell-based approaches for the treatment of cartilage and osteochondral injuries, with current clinically available cell-based approaches including autologous chondrocyte implantation and matrix-assisted autologous chondrocyte implantation. However, these approaches have significant disadvantages due to the requirement for a two-stage surgical procedure and an in vitro chondrocyte expansion phase which increases logistical challenges, hospital times and costs.

Multistakeholder Perspectives on Interventions to Support Youth During Mental Health Boarding.

Objective: To identify and prioritize opportunities to improve the psychiatric boarding experience for youth awaiting admission or transfer to inpatient psychiatric care.

Study Design: This study utilized an exploratory mixed methods design. The study team convened multidisciplinary stakeholder focus groups to discuss proposed hospital-based solutions to mental health boarding, potential psychosocial interventions deliverable during boarding, and outcomes measurement.

Healthcare quality during pediatric mental health boarding: A qualitative analysis.

Background: Following initial evaluation and management, youth requiring inpatient psychiatric care often experience boarding, defined as being held in the emergency department or another location while awaiting inpatient care. Although mental health boarding is common, little research has examined the quality of healthcare delivery during the boarding period.

Objective: This study aimed to explore the perspectives and experiences of multidisciplinary clinicians and parents regarding mental health boarding and to develop a conceptual model to inform quality improvement efforts.

Virilization by an Ovarian Tumor: Presentation Is Not Always Acute.

Androgen-producing steroid cell ovarian tumors are rare, comprising less than 1% of ovarian neoplasms, and can present with infertility and rapid virilization. Here we discuss the case of a 28-year-old woman who presented with an unusually insidious 2-year history of infertility, hirsutism, and clitoromegaly who was found to have an elevated serum testosterone and a left ovarian mass. She underwent oophorectomy and pathology revealed a steroid cell tumor, not otherwise specified (NOS), with no malignant features.

The Impact of the Extracellular Matrix Environment on Expression by the MLO-Y4 Osteocyte Cell Line.

Bone is a dynamic organ that can adapt its structure to meet the demands of its biochemical and biophysical environment. Osteocytes form a sensory network throughout the tissue and orchestrate tissue adaptation via the release of soluble factors such as a sclerostin. Osteocyte physiology has traditionally been challenging to investigate due to the uniquely mineralized extracellular matrix (ECM) of bone leading to the development of osteocyte cell lines.

Evaluation of a brief psychosocial intervention for health anxiety delivered by medical assistants in primary care: Study protocol for a pilot hybrid trial.

Health anxiety is a chronic mental health condition that exerts substantial personal and economic burdens on patients, providers, and the larger healthcare system. Patients with health anxiety experience persistent worry and dread over the possibility that they are presently ill with an undetected or poorly defined physical illness or may soon become ill despite an absence of evidence and physician reassurance of wellness. A complication of health anxiety is that the sufferer frequently denies the presence of excessive anxiety, typically attributing their distress to an inability of the medical team to correctly identify the feared illness.

Analyzing the Carbon Footprint of an Intravitreal Injection.

Purpose: To estimate the carbon footprint of a single intravitreal injection in a hospital-based intravitreal service.

Methods: Greenhouse gas emissions attributable to the delivery of an intravitreal injection were calculated using a hybrid lifecycle analysis technique. Data were collected regarding procurement of materials, patient travel, and building energy use.

Differences in Postmortem Investigation following Perinatal Death.

Objective: The study aimed to describe the postmortem investigation patterns for perinatal deaths and compare the degree of investigation between stillbirths and early neonatal deaths.

Study Design: We conducted a single-center retrospective review of all perinatal deaths from 2011 to 2017. Perinatal death was defined as intrauterine fetal death at ≥20 weeks' gestation, plus neonatal deaths within the first 7 days of life.

The effect of prior long-term recellularization with keratocytes of decellularized porcine corneas implanted in a rabbit anterior lamellar keratoplasty model.

Decellularized porcine corneal scaffolds are a potential alternative to human cornea for keratoplasty. Although clinical trials have reported promising results, there can be corneal haze or scar tissue. Here, we examined if recellularizing the scaffolds with human keratocytes would result in a better outcome.

Evaluating the mediating effects of perceived vulnerability to disease in the relation between disgust and contamination-based OCD.

Contamination-based obsessive-compulsive disorder (OCD) is thought to develop and be maintained by excessive propensity to experience disgust, particularly in response to perceived contaminants, and dysfunctional threat appraisals pertaining to illness. The present studies attempted to integrate these lines of research by testing the degree to which contamination-based OCD is associated with individual differences in disgust propensity and sensitivity, affective distress in response to perceived contaminants, and perceived threat of illness. In Study 1, a convenience sample of 185 adults completed self-report scales assessing obsessive-compulsive symptoms, disgust propensity and sensitivity, germ aversion, and perceived infectability.

Correlation of tumor microenvironment from biopsy and resection specimens in untreated colorectal cancer patients: a surprising lack of agreement.

Background: Colorectal cancer (CRC) tumor microenvironment (TME) characteristics, such as tumor infiltrating lymphocyte (TIL) densities and PD-L1 status, are predictive of recurrence, disease-free survival, and overall survival. In many malignancies, TME characteristics are also predictive of response to immunotherapy. As window of opportunity studies using neoadjuvant immunotherapy become more common and treatment guidelines incorporate TME features, accurate assessment of the pre-treatment TME using the biopsy specimen is critical.

Effect of intravenous fluid warming on core body temperature during elective orthopedic procedures.

The effects of intravenous (IV) fluid warming on core body temperature in a group of dogs undergoing an elective orthopedic procedure was studied. An IV fluid warmer was used alone or in conjunction with forced warmed air to determine the individual or additive effects of IV fluid warming. These effects were compared to those in dogs with no heat support or those with only forced warmed air in a randomized prospective study design.

The Use of Animal Models to Assess Engineered Corneal Tissue.

Tissue-engineered corneal constructs offer the potential of readily available corneal substitutes for transplantation. As with all medical devices and implants, these constructs require rigorous safety assessments, combined with well-described analyses of the implant's physical and biological characteristics. Although the constructs are developed in vitro, such studies are currently unable to fully emulate the complex biomechanical and biochemical conditions within living tissue, as well as the interplay between this environment and immunological factors.

Decidual Granulomata of Unclear Significance.

Granulomatous inflammation is a histologic finding with a relatively wide variety of causes. In general, considerations include infectious etiologies, autoimmune conditions, or foreign body reactions. Granulomatous inflammation is uncommonly seen in the placenta.

Effects of Left Versus Right Dorsolateral Prefrontal Cortex Repetitive Transcranial Magnetic Stimulation on Affective Flexibility in Healthy Women: A Pilot Study.

Objective: To determine the antidepressant mechanism of action for repetitive transcranial magnetic stimulation (rTMS) to the left dorsolateral prefrontal cortex (DLPFC) in healthy women. Our primary hypothesis was that a single session of left DLPFC rTMS, compared with a session of right DLPFC rTMS, would result in better (reduced) negative nonaffective switch costs in healthy women.

Background: The antidepressant mechanism of action for rTMS is not clear.