Safety Evaluations of Rapamycin Perfluorocarbon Nanoparticles in Ovarian Tumor-Bearing Mice.

Nanomedicine holds great potential for revolutionizing medical treatment. Ongoing research and advancements in nanotechnology are continuously expanding the possibilities, promising significant advancements in healthcare. To fully harness the potential of nanotechnology in medical applications, it is crucial to conduct safety evaluations for the nanomedicines that offer effective benefits in the preclinical stage.

Engineered self-regulating macrophages for targeted anti-inflammatory drug delivery.

Background: Rheumatoid arthritis (RA) is a systemic autoimmune disease characterized by increased levels of inflammation that primarily manifests in the joints. Macrophages act as key drivers for the progression of RA, contributing to the perpetuation of chronic inflammation and dysregulation of pro-inflammatory cytokines such as interleukin 1 (IL-1). The goal of this study was to develop a macrophage-based cell therapy for biologic drug delivery in an autoregulated manner.

Facial growth dynamics dictate optimal facemask fitting during the first year of life.

Aim: The aim of this study is to prevent mask leak during ventilation in infant emergencies, appropriate facemask fitting is essential. Therefore, we investigated facial profiles during the first year of life and their correlation with the correct sizing of masks.

Methods: This is a post hoc subgroup analysis of 32 healthy term infants, based on a prospective observational study performed from September 2018 to December 2019 in Tuebingen, Germany.

Mucosal signatures of pathogenic T cells in HLA-B*27+ anterior uveitis and axial spondyloarthritis.

HLA-B*27 was one of the first HLA alleles associated with an autoimmune disease, i.e., axial spondyloarthritis (axSpA) and acute anterior uveitis (B27AAU), which cause joint and eye inflammation, respectively.

Less Invasive Surfactant Administration in Preterm Infants in Tertiary Neonatal Intensive Care Units in Germany: A Survey.

Introduction: The European guideline for treatment of respiratory distress syndrome recommends less invasive surfactant administration (LISA) as the preferred method of surfactant administration in spontaneously breathing preterm infants. However, there is limited evidence on practical aspects such as sedation and catheter types, leading to considerable variability between centers.

Methods: An anonymous online survey ( View Article and Find Full Text PDF

The Other Side of Endodontics: Vital Pulp Therapy on Mature Permanent Teeth.

Vital pulp therapy (VPT) was once a treatment modality that was only considered for immature permanent teeth to allow for the continued development of the radicular system if the pulp was vital. With the advent of bioceramics and bioactive materials such as calcium silicate cements, the applications for VPT have greatly increased, giving dentists a treatment option other than nonsurgical root canal therapy (RCT) for mature teeth previously diagnosed to have an irreversible pulpitis. This approach can serve as a less invasive, simpler procedure than RCT while allowing for the preservation of natural tooth structure.

Engineered Self-Regulating Macrophages for Targeted Anti-inflammatory Drug Delivery.

Background: Rheumatoid arthritis (RA) is a systemic autoimmune disease characterized by increased levels of inflammation that primarily manifests in the joints. Macrophages act as key drivers for the progression of RA, contributing to the perpetuation of chronic inflammation and dysregulation of pro-inflammatory cytokines such as interleukin 1 (IL-1). The goal of this study was to develop a macrophage-based cell therapy for biologic drug delivery in an autoregulated manner.

Randomised crossover study on pulse oximeter readings from different sensors in very preterm infants.

Objective: In extremely preterm infants, different target ranges for pulse oximeter saturation (SpO) may affect mortality and morbidity. Thus, the impact of technical changes potentially affecting measurements should be assessed. We studied SpO readings from different sensors for systematic deviations.

Multiple and Consecutive Genome Editing Using i-GONAD and Breeding Enrichment Facilitates the Production of Genetically Modified Mice.

Genetically modified (GM) mice are essential tools in biomedical research. Traditional methods for generating GM mice are expensive and require specialized personnel and equipment. The use of clustered regularly interspaced short palindromic repeats (CRISPR) coupled with improved-Genome editing via Oviductal Nucleic Acids Delivery (i-GONAD) has highly increased the feasibility of producing GM mice in research laboratories.

Baseline status regarding compliance with neo-BFHI recommendations in South African neonatal wards: a cross-sectional survey.

Background: In 2009, the World Health Organization and the United Nations Children's Fund issued a revised Baby-friendly Hospital Initiative (BFHI) package to encourage all healthcare facilities to promote the advice of exclusive breastfeeding. The scope of the BFHI was expanded to include neonatal units by the Nordic and Quebec Working Group.

Aim: To determine the level of compliance with the recommendations outlined in the "Baby-friendly Hospital Initiative for neonatal wards" (Neo-BFHI) in the South African neonatal wards.

Phase II Randomized Trial of Lenalidomide in Children With Pilocytic Astrocytomas and Optic Pathway Gliomas: A Report From the Children's Oncology Group.

Purpose: Children with low-grade glioma often require long-term therapy and suffer from treatment morbidity. Although targeted agents are promising, tumor targets often encompass normal developmental pathways and long-term effects of inhibition are unknown. Lenalidomide is an immunomodulatory agent with wide-ranging properties.

Hydrogel Encapsulation of Genome-Engineered Stem Cells for Long-Term Self-Regulating Anti-Cytokine Therapy.

Biologic therapies have revolutionized treatment options for rheumatoid arthritis (RA) but their continuous administration at high doses may lead to adverse events. Thus, the development of improved drug delivery systems that can sense and respond commensurately to disease flares represents an unmet medical need. Toward this end, we generated induced pluripotent stem cells (iPSCs) that express interleukin-1 receptor antagonist (IL-1Ra, an inhibitor of IL-1) in a feedback-controlled manner driven by the macrophage chemoattractant protein-1 (Ccl2) promoter.

Cerebral regional tissue Oxygen Saturation to Guide Oxygen Delivery in preterm neonates during immediate transition after birth (COSGOD III): multicentre randomised phase 3 clinical trial.

Objective: To investigate whether monitoring of cerebral tissue oxygen saturation using near infrared spectroscopy in addition to routine monitoring combined with defined treatment guidelines during immediate transition and resuscitation increases survival without cerebral injury of premature infants compared with standard care alone.

Design: Multicentre, multinational, randomised controlled phase 3 trial.

Setting: 11 tertiary neonatal intensive care units in six countries in Europe and in Canada.

Side-chain modification of collagen-targeting peptide prevents dye aggregation for improved molecular imaging of arthritic joints.

Near-infrared (NIR) dye-peptide conjugates are widely used for tissue-targeted molecular fluorescence imaging of pathophysiologic conditions. However, the significant contribution of both dye and peptide to the net mass of these bioconjugates implies that small changes in either component could alter their photophysical and biological properties. Here, we synthesized and conjugated a type I collagen targeted peptide, RRANAALKAGELYKCILY, to either a hydrophobic (LS1000) or hydrophilic (LS1006) NIR fluorescent dye.

Flavonol dioxygenase chemistry mediated by a synthetic nickel superoxide.

Nature exploits transition metal centers to enhance and tune the oxidizing power of natural oxidants such as O and HO. The design and interrogation of synthetic metallocomplexes with similar reactivity to metalloproteins provides one strategy for gaining insight into the mechanistic underpinnings of oxygen-activating enzymes such as oxidases, oxygenases, and dioxygenases like Ni-quercetinase (Ni-QueD). Ni-QueD catalyzes the oxidative ring opening of the polyphenol quercetin, a natural product with antioxidant properties.

Resuscitators' opinions on using a respiratory function monitor during neonatal resuscitation.

Aim: The aim of this study was to assess the resuscitators' opinions of the usefulness and clinical value of using a respiratory function monitor (RFM) when resuscitating extremely preterm infants with positive pressure ventilation.

Methods: The link to an online survey was sent to 106 resuscitators from six countries who were involved in a multicentre trial that compared the percentage of inflations within a predefined target range with and without the RFM. The resuscitators were asked to assess the usefulness and clinical value of the RFM.

Tidal volumes during delivery room stabilization of (near) term infants.

Background: We sought to assess tidal volumes in (near) term infants during delivery room stabilization.

Methods: Secondary analysis of a prospective study comparing two facemasks used for positive pressure ventilation (PPV) in newborn infants ≥ 34 weeks gestation. PPV was provided with a T-piece device with a PIP of 30 cmHO and positive end-expiratory airway pressure of 5 cmHO.

Lung volume changes during apnoeas in preterm infants.

Objective: Mechanisms of non-invasive high-frequency oscillatory ventilation (nHFOV) in preterm infants are unclear. We aimed to compare lung volume changes during apnoeas in preterm infants on nHFOV and nasal continuous positive airway pressure (nCPAP).

Methods: Analysis of electrical impedance tomography (EIT) data from a randomised crossover trial comparing nHFOV with nCPAP in preterm infants at 26-34 weeks postmenstrual age.

Safety Profile of Rapamycin Perfluorocarbon Nanoparticles for Preventing Cisplatin-Induced Kidney Injury.

Cancer treatment-induced toxicities may restrict maximal effective dosing for treatment and cancer survivors' quality of life. It is critical to develop novel strategies that mitigate treatment-induced toxicity without affecting the efficacy of anti-cancer therapies. Rapamycin is a macrolide with anti-cancer properties, but its clinical application has been hindered, partly by unfavorable bioavailability, pharmacokinetics, and side effects.

Tactile stimulation in the delivery room: past, present, future. A systematic review.

In current resuscitation guidelines, tactile stimulation is recommended for infants with insufficient respiratory efforts after birth. No recommendations are made regarding duration, onset, and method of stimulation. Neither is mentioned how tactile stimulation should be applied in relation to the gestational age.

Lung volume distribution in preterm infants on non-invasive high-frequency ventilation.

Introduction: Non-invasive high-frequency oscillatory ventilation (nHFOV) is an extension of nasal continuous positive airway pressure (nCPAP) support in neonates. We aimed to compare global and regional distribution of lung volumes during nHFOV versus nCPAP.

Methods: In 30 preterm infants enrolled in a randomised crossover trial comparing nHFOV with nCPAP, electrical impedance tomography data were recorded in prone position.