Backscattering Mueller matrix polarimetry estimates microscale anisotropy and orientation in complex brain tissue structure.

Purpose: Diffusion magnetic resonance imaging (dMRI) quantitatively estimates brain microstructure, diffusion tractography being one clinically utilized framework. To advance such dMRI approaches, direct quantitative comparisons between microscale anisotropy and orientation are imperative. Complete backscattering Mueller matrix polarized light imaging (PLI) enables the imaging of thin and thick tissue specimens to acquire numerous optical metrics not possible through conventional transmission PLI methods.

Multiphoton Microscopy Assessment of Healing From Tendon Laceration and Microthermal Coagula in a Rat Model.

Objectives: To study the healing response of rat Achilles tendon when lacerated or treated with intense therapeutic ultrasound (ITU) via utilization of multiphoton microscopy (MPM) imaging and histology.

Materials And Methods: The right Achilles tendon of each Sprague Dawley rat within a cohort was partially lacerated. 1 to 2 days post-surgery, each rat received ITU treatment of the Achilles tendon on either the right or left leg.

2024 International Consensus on Cardiopulmonary Resuscitation and Emergency Cardiovascular Care Science With Treatment Recommendations: Summary From the Basic Life Support; Advanced Life Support; Pediatric Life Support; Neonatal Life Support; Education, Implementation, and Teams; and First Aid Task Forces.

This is the eighth annual summary of the International Liaison Committee on Resuscitation International Consensus on Cardiopulmonary Resuscitation and Emergency Cardiovascular Care Science With Treatment Recommendations; a more comprehensive review was done in 2020. This latest summary addresses the most recent published resuscitation evidence reviewed by the International Liaison Committee on Resuscitation task force science experts. Members from 6 International Liaison Committee on Resuscitation task forces have assessed, discussed, and debated the quality of the evidence, using Grading of Recommendations Assessment, Development, and Evaluation criteria, and their statements include consensus treatment recommendations.

Principles of resuscitation for infants with severe bronchopulmonary dysplasia.

Severe bronchopulmonary dysplasia (sBPD) requiring invasive mechanical ventilation is a heterogeneous disease process that contributes to morbidity and mortality in infants. As the most common lung disease of prematurity, sBPD has a multitude of overlapping cardiac, airway, pulmonary vascular, and infectious phenotypic presentations that progress through four different phases of care. Premature infants with sBPD are at a high risk of acute decompensation and subsequent cardiopulmonary arrest.

Impact of virtual simulation vs. Video refresher training on NRP simulation performance: a randomized controlled trial.

Objective: To assess the impact of NRP virtual simulations (eSim™), video or no refresher training, on simulation performance, six months after a provider course; and to evaluate eSim™ acceptability.

Study Design: In this multi-site randomized controlled trial, NRP providers from four U.S.

A Pilot Interprofessional Education Curriculum for Optimizing Mental Health in Chronic Pain Treatment and Understanding Interprofessional Practice.

Introduction: With the urgent need for clinicians capable of responding to the opioid crisis, an interprofessional education (IPE) pilot curriculum was launched to assess trainee self-efficacy in managing chronic pain and mental health conditions, and attitudes toward interprofessional practice among resident physicians, family nurse practitioners (FNP), and physician assistant (PA) students.

Methods: This study involved the implementation of a pilot curriculum consisting of five interactive IPE sessions. All invited trainees across two academic institutions were asked to complete the assessments.

Molecular Mechanism of P53 Peptide Permeation through Lipid Membranes from Solid-State NMR Spectroscopy and Molecular Dynamics Simulations.

Macrocyclic peptides show promise in targeting high-value therapeutically relevant binding sites due to their high affinity and specificity. However, their clinical application is often hindered by low membrane permeability, which limits their effectiveness against intracellular targets. Previous studies focused on peptide conformations in various solvents, leaving a gap in understanding their interactions with and translocation through lipid bilayers.

Subthreshold activation of the melanocortin system causes generalized sensitization to anorectic agents in mice.

The melanocortin-3 receptor (MC3R) regulates GABA release from agouti-related protein (AgRP) nerve terminals and thus tonically suppresses multiple circuits involved in feeding behavior and energy homeostasis. Here, we examined the role of the MC3R and the melanocortin system in regulating the response to various anorexigenic agents. The genetic deletion or pharmacological inhibition of the MC3R, or subthreshold doses of an MC4R agonist, improved the dose responsiveness to glucagon-like peptide 1 (GLP1) agonists, as assayed by inhibition of food intake and weight loss.

Rapid cycle deliberate practice approach on resuscitation training: A systematic review.

Aim: To evaluate the effectiveness of Rapid Cycle Deliberate Practice (RCDP) compared to traditional instruction or other forms of learning on resuscitation training outcomes and on clinical and/or patient-related outcomes.

Methods: As part of the continuous evidence evaluation process of the International Liaison Committee on Resuscitation it was conducted this review and searched Medline, Embase and Cochrane from inception to Feb 12th, 2024. Risk of bias assessment was performed with the Risk of Bias in Non-randomized Studies of Interventions assessment tool and the Revised Cochrane risk-of-bias tool for randomized trials.

Gamified learning for resuscitation education: A systematic review.

Aim: To systematically review published literature to evaluate the impact of gamified learning on educational and clinical outcomes during life support education.

Methods: This systematic review was conducted as part of the continuous evidence evaluation process of the International Liaison Committee on Resuscitation (ILCOR). A search of PubMed, Embase, and Cochrane was conducted from inception until February 12, 2024.

Human Saposin B Ligand Binding and Presentation to α-Galactosidase A.

Sphingolipid activator protein B (saposin B; SapB) is an essential activator of globotriaosylceramide (Gb3) catabolism by α-galactosidase A. However, the manner by which SapB stimulates α-galactosidase A activity remains unknown. To uncover the molecular mechanism of SapB presenting Gb3 to α-galactosidase A, we subjected the fluorescent substrate globotriaosylceramide-nitrobenzoxidazole (Gb3-NBD) to a series of biochemical and structural assays involving SapB.

Targeted multispectral filter array design for the optimization of endoscopic cancer detection in the gastrointestinal tract.

Significance: Color differences between healthy and diseased tissue in the gastrointestinal (GI) tract are detected visually by clinicians during white light endoscopy; however, the earliest signs of cancer are often just a slightly different shade of pink compared to healthy tissue making it hard to detect. Improving contrast in endoscopy is important for early detection of disease in the GI tract during routine screening and surveillance.

Aim: We aim to target alternative colors for imaging to improve contrast using custom multispectral filter arrays (MSFAs) that could be deployed in an endoscopic "chip-on-tip" configuration.

Endotracheal Tube Size Adjustments Within Seven Days of Neonatal Intubation.

Background And Objectives: Neonatal endotracheal tube (ETT) size recommendations are based on limited evidence. We sought to determine data-driven weight-based ETT sizes for infants undergoing tracheal intubation and to compare these with Neonatal Resuscitation Program (NRP) recommendations.

Methods: Retrospective multicenter cohort study from an international airway registry.

Vasoplegic syndrome during heart transplantation: A systematic review and meta-analysis.

Background: Vasoplegic syndrome (VS) is a common occurrence during heart transplantation (HT). It currently lacks a uniform definition between transplant centers, and its pathophysiology and treatment remain enigmatic. This systematic review summarizes the available published clinical data regarding VS during HT.

The novel peptide LCGM-10 attenuates metabotropic glutamate receptor 5 activity and demonstrates behavioral effects in animal models.

We employed a structural bioinformatics approach to develop novel peptides with predicted affinity to the binding site for negative allosteric modulators (NAMs) of metabotropic glutamate receptor 5 (mGluR5). Primary screening in zebrafish () revealed a stimulatory effect of two peptides, LCGM-10 and LCGM-15. Target validation studies using calcium ion flux imaging and a luciferase reporter assay confirmed mGluR5 as the target.

Increasing Realism and Variety of Virtual Patient Dialogues for Prenatal Counseling Education Through a Novel Application of ChatGPT: Exploratory Observational Study.

Background: Using virtual patients, facilitated by natural language processing, provides a valuable educational experience for learners. Generating a large, varied sample of realistic and appropriate responses for virtual patients is challenging. Artificial intelligence (AI) programs can be a viable source for these responses, but their utility for this purpose has not been explored.

Combined flat-field and frequency filter approach to correcting artifacts of multichannel two-photon microscopy.

Significance: Multiphoton microscopy (MPM) is a useful biomedical imaging tool for its ability to probe labeled and unlabeled depth-resolved tissue biomarkers at high resolution. Automated MPM tile scanning allows for whole-slide image acquisition but can suffer from tile-stitching artifacts that prevent accurate quantitative data analysis.

Aim: We have investigated postprocessing artifact correction methods using ImageJ macros and custom Python code.

Rapid cycle deliberate practice improves resident performance during ELBW resuscitation.

Background: Neonatal Resuscitation is a required competency for pediatric and family medicine residency programs. Simulation-based training can be used to supplement clinical experience. Rapid Cycle Deliberate Practice (RCDP) has been validated as an effective education model and is gaining favor over traditional simulation models.

Design-rules for stapled peptides with in vivo activity and their application to Mdm2/X antagonists.

Although stapled α-helical peptides can address challenging targets, their advancement is impeded by poor understandings for making them cell permeable while avoiding off-target toxicities. By synthesizing >350 molecules, we present workflows for identifying stapled peptides against Mdm2(X) with in vivo activity and no off-target effects. Key insights include a clear correlation between lipophilicity and permeability, removal of positive charge to avoid off-target toxicities, judicious anionic residue placement to enhance solubility/behavior, optimization of C-terminal length/helicity to enhance potency, and optimization of staple type/number to avoid polypharmacology.

The analgesic effectiveness of perioperative lidocaine infusions for acute and chronic persistent postsurgical pain in patients undergoing breast cancer surgery: a systematic review and meta-analysis.

Background: Breast cancer is the most common cancer among women and tumour resection carries a high prevalence of chronic persistent postsurgical pain (CPSP). Perioperative i.v.

Maternal COVID-19 Infection Associated with Fetal Systemic Inflammatory Complications in COVID-19-Negative Neonates: A Case-Series.

Objective: This study aimed to examine fetal and neonatal inflammatory and neurologic complications associated with maternal coronavirus disease 2019 (COVID-19) infection.

Study Design: Case-series using a convenience sample of neonates cared for in a large referral-based children's hospital neonatal intensive care unit between September 2021 and May 2022.

Results: We identified seven neonates with exposure to maternal severe acute respiratory syndrome related coronavirus 2 (SARS-CoV-2) and a presentation consistent with inflammatory complications.