Small bowel lymphangioma: a multidisciplinary approach to diagnostic uncertainty.

Intra-abdominal lymphangioma, a rare benign lymphatic malformation resulting from an obstruction to lymphatic channels, often has non-specific clinical manifestations. Low incidence rates of this condition, paired with its unusual presentation and ambiguous radiological appearance, commonly lead to diagnostic uncertainty. This pathology can result in significant morbidity and mortality, emphasising the need to achieve early diagnosis and management despite these challenges.

Myositis/myasthenia gravis caused by immune checkpoint inhibition: A report of two cases and a brief review of the literature.

Immune checkpoint inhibitors (ICIs) have revolutionized cancer therapy by enhancing the ability of the immune system to combat malignancies. Nivolumab and cemiplimab, monoclonal antibodies targeting programmed cell death protein 1, have exhibited notable therapeutic efficacy; however, they are associated with immune-related adverse events (irAEs). The present study describes the cases of 2 patients, a 71-year-old male with metastatic esophageal adenocarcinoma and a 66-year-old female with metastatic squamous cell carcinoma who developed acute/subacute onset rapidly progressive myositis/myasthenia gravis (MG) following treatment with nivolumab and cemiplimab.

A generalized Hosmer-Lemeshow goodness-of-fit test for a family of generalized linear models.

Unlabelled: Generalized linear models (GLMs) are very widely used, but formal goodness-of-fit (GOF) tests for the overall fit of the model seem to be in wide use only for certain classes of GLMs. We develop and apply a new goodness-of-fit test, similar to the well-known and commonly used Hosmer-Lemeshow (HL) test, that can be used with a wide variety of GLMs. The test statistic is a variant of the HL statistic, but we rigorously derive an asymptotically correct sampling distribution using methods of Stute and Zhu (Scand J Stat 29(3):535-545, 2002) and demonstrate its consistency.

Formulation and Characterization of Bioactive Agent Containing Nanodisks.

The term nanodisk refers to a discrete type of nanoparticle comprised of a bilayer forming lipid, a scaffold protein, and an integrated bioactive agent. Nanodisks are organized as a disk-shaped lipid bilayer whose perimeter is circumscribed by the scaffold protein, usually a member of the exchangeable apolipoprotein family. Numerous hydrophobic bioactive agents have been efficiently solubilized in nanodisks by their integration into the hydrophobic milieu of the particle's lipid bilayer, yielding a largely homogenous population of particles in the range of 10-20 nm in diameter.

Asymptotic behavior of an intrinsic rank-based estimator of the Pickands dependence function constructed from B-splines.

A bivariate extreme-value copula is characterized by its Pickands dependence function, i.e., a convex function defined on the unit interval satisfying boundary conditions.

SARS-CoV-2 transmission in university classes.

Unlabelled: We investigate transmission dynamics for SARS-CoV-2 on a real network of classes at Simon Fraser University. Outbreaks are simulated over the course of one semester across numerous parameter settings, including moving classes above certain size thresholds online. Regression trees are used to analyze the effect of disease parameters on simulation outputs.

A Systematic Review on the Biomechanics of Breakfall Technique (Ukemi) in Relation to Injury in Judo within the Adult Judoka Population.

Objectives: To investigate the biomechanics of Ukemi in relation to head and neck injury in adult judokas with varying skill sets.

Design: Narrative systematic review.

Methods: An extensive literature search was performed using PubMed, Google Scholar, Science direct and EMBASE from inception to April 2021.

The diagnostic yield of advanced imaging in dogs with Horner's syndrome presenting with and without additional clinical signs: A retrospective study of 120 cases (2000-2018).

Purpose: To evaluate the diagnostic yield of advanced imaging in dogs with Horner's syndrome (HS) both with and without additional clinical signs.

Methods: Retrospective review of clinical records from a UK referral hospital (2000-2018). Cases were excluded if HS was trauma- or surgery-related and if no advanced imaging with MRI or CT was performed.

Replication of live attenuated influenza vaccine viruses in human nasal epithelial cells is associated with H1N1 vaccine effectiveness.

In the 2013-2014 and 2015-2016 influenza seasons, live attenuated influenza vaccine (LAIV) generated reduced vaccine effectiveness (VE) against circulating H1N1 strains. This reduced VE coincided with the introduction of pandemic 2009 H1N1 (A/H1N1pdm09) vaccine virus reassortants, in place of pre-2009 seasonal H1N1 strains. Here, we explored one specific hypothesis for reduced VE; decreased replicative fitness of A/H1N1pdm09 strains in humans.

Outcome of phacoemulsification in 71 cats: A multicenter retrospective study (2006-2017).

Purpose: To assess outcome of phacoemulsification in cats.

Methods: Records of 71 cats (82 eyes) from five referral centers were reviewed. Groups were divided by cause of cataract (congenital/juvenile [n = 32], traumatic [n = 33], and secondary to uveitis [n = 6]), and group comparisons were performed for the most common complications: postoperative ocular hypertension (POH), uveitis, corneal ulceration, synechia/dyscoria, and posterior capsular opacity (PCO) in three different time periods: immediately postoperatively, at 1-90 days, and at >90 days.

Human and rodent temporal lobe epilepsy is characterized by changes in O-GlcNAc homeostasis that can be reversed to dampen epileptiform activity.

Temporal Lobe Epilepsy (TLE) is frequently associated with changes in protein composition and post-translational modifications (PTM) that exacerbate the disorder. O-linked-β-N-acetyl glucosamine (O-GlcNAc) is a PTM occurring at serine/threonine residues that is derived from and closely associated with metabolic substrates. The enzymes O-GlcNActransferase (OGT) and O-GlcNAcase (OGA) mediate the addition and removal, respectively, of the O-GlcNAc modification.

Skin Perfusion Pressure and Wound Closure Time in Lower Extremity Wounds.

Introduction: Peripheral Arterial Disease (PAD) affects approximately 8 million patients in the United States. We investigate the relationship of Skin Perfusion Pressure (SPP) and wound closure time in lower extremity wounds.

Methods: We conducted a retrospective study of 1125 lower extremity wounds in 998 patients between June 2006 and October 2014 in our wound clinic.

A Method for Isolation of Stromal Vascular Fraction Cells in a Clinically Relevant Time Frame.

There is increasing interest in the clinical applications of adipose-derived stem cells (ASCs) and the stromal vascular fraction (SVF) based on promising preclinical data. As adipose-derived therapeutics begin to translate into the clinical setting, it is important to maintain patient safety as well as uniformity in technique. Here, we describe a method for isolation of stromal vascular fraction cells in a clinically relevant time frame.

Use of Freshly Isolated Human Adipose Stromal Cells for Clinical Applications.

The clinical use of adipose-derived cells is being explored very actively around the world for various human diseases. Adipose tissue is an abundant tissue source that can be easily harvested using liposuction. Human lipoaspirates contain a significant amount of mesenchymal stromal cells, as well as other progenitors and terminally differentiated cell types.

Adipose Stromal Vascular Fraction Isolation: A Head-to-Head Comparison of 4 Cell Separation Systems #2.

Introduction: With stromal vascular fraction (SVF) cell and adipose-derived stem cell-based technologies translating into the clinical setting, numerous isolation systems have been developed for the point of care isolation of SVF cells from adipose tissue. A relative lack of performance data on these systems can make objective assessment difficult for prospective clinicians. This study compared the performance of 4 SVF cell isolation systems.

Demonstration of the scalar property of timing with possums (Trichosurus vulpecula).

Many diverse species have demonstrated interval timing, the ability to respond appropriately to time in the range of seconds to minutes, suggesting that an ability to time is adaptive. The peak procedure is a common method of studying interval time perception. In the peak procedure, animals experience a mix of fixed-interval (FI) and extinction (EXT) trials.

Lateral Intercostal Artery Perforator Flap in Breast Reconstruction: A Simplified Pedicle Permits an Expanded Role.

Background: The lateral intercostal artery perforator (LICAP) flap is a versatile second-tier option in breast reconstruction. The flap is rotated from redundant lateral chest fold on an easily dissected skin bridge pedicle without microsurgery in an outpatient setting. This series illustrates safety and effectiveness of the LICAP flap for prosthesis coverage when a muscle flap is not available or desired.

Mechanical versus enzymatic isolation of stromal vascular fraction cells from adipose tissue.

Clinical use of adipose-derived stem cells (ASCs) for a variety of indications is rapidly expanding in medicine. Most commonly, ASCs are isolated at the point of care from lipoaspirate tissue as the stromal vascular fraction (SVF). The cells are immediately administered to the patient as an injection or used to enrich fat grafts.

Clinical Safety of Stromal Vascular Fraction Separation at the Point of Care.

Introduction: Pluripotential cells in adipose tissue may be important in long-term volume retention and regenerative effects of fat grafting. Unfortunately, graft harvest with lipoaspiration significantly depletes the population of stromal vascular cells, which includes adipose stem cells. Stromal vascular fraction (SVF) cells may be isolated from excess lipoaspirate at the point of care and used to replenish fat grafts, a technique termed cell-assisted lipotransfer (CAL).

Silicon micromachined ultrasonic scalpel for the dissection and coagulation of tissue.

This work presents a planar, longitudinal mode ultrasonic scalpel microfabricated from monocrystalline silicon wafers. Silicon was selected as the material for the ultrasonic horn due to its high speed of sound and thermal conductivity as well as its low density compared to commonly used titanium based alloys. Combined with a relatively high Young's modulus, a lighter, more efficient design for the ultrasonic scalpel can be implemented which, due to silicon batch manufacturing, can be fabricated at a lower cost.