Modeling tumor dynamics and predicting response to chemo-, targeted-, and immune-therapies in a murine model of pancreatic cancer.

We seek to establish a parsimonious mathematical framework for understanding the interaction and dynamics of the response of pancreatic cancer to the NGC triple chemotherapy regimen (mNab-paclitaxel, gemcitabine, and cisplatin), stromal-targeting drugs (calcipotriol and losartan), and an immune checkpoint inhibitor (anti-PD-L1). We developed a set of ordinary differential equations describing changes in tumor size (growth and regression) under the influence of five cocktails of treatments. Model calibration relies on three tumor volume measurements obtained over a 14-day period in a genetically engineered pancreatic cancer model (KrasLSLG12D-Trp53LSLR172H-Pdx1-Cre).

Knowledge, Attitude, and Practices of White Spot Lesion Management Among Dental Professionals in South India: A Cross-Sectional Study.

Introduction White spot lesions (WSLs) are opacities formed due to decalcification occurring in the enamel's subsurface layer. These lesions are most commonly seen in patients during and after fixed orthodontic treatment due to undisturbed accumulation of plaque. Other factors that can predispose to WSLs are enamel hypomineralization, hypomaturation, hypoplasia, and disruption in the levels of salivary calcium, phosphate, bicarbonate, and fluoride.

The American Board of Orthodontics: Scenario-based clinical examination development and preparation.

This article outlines the development process for the scenario-based clinical examination of the American Board of Orthodontics (ABO). It emphasizes the importance of gaining hands-on experience with patients and critically analyzing the facts when formulating sound clinical judgments. These exercises enhance critical thinking skills, allowing for self-assessment and reflection on patient outcomes.

The Depth Estimation and Visualization of Dermatological Lesions: Development and Usability Study.

Background: Thus far, considerable research has been focused on classifying a lesion as benign or malignant. However, there is a requirement for quick depth estimation of a lesion for the accurate clinical staging of the lesion. The lesion could be malignant and quickly grow beneath the skin.

Etched CoFe Prussian blue analog nanozymes with superior peroxidase activity for colorimetric biosensing of hydrogen peroxide and dopamine.

Nanozymes represent a compelling alternative to natural enzymes due to their exceptional stability and cost-efficiency in diagnostic and therapeutic applications. In this work, a nanozyme etched CoFe Prussian blue analog (etched PBA) was designed and fabricated by a simple approach involving first synthesizing CoFe PBA and then chemical etching. The fabricated etched PBA acts as a peroxidase mimic catalyst.

Long-term cerebrovascular outcomes of patients undergoing percutaneous patent foramen ovale closure in observational studies: a systematic review and meta-analysis.

Objectives: Patent foramen ovale (PFO) closure is recommended for patients who experience a cryptogenic stroke attributable to PFO. Although few randomized control trials (RCTs) have captured long-term effectiveness of PFO closure, observational data has been abundant. This is the first systematic review of observational studies determining incidence of long-term adverse outcomes in adults who underwent transcatheter PFO closure, with comparisons to findings from RCTs.

Anomalous Hall Crystals in Rhombohedral Multilayer Graphene. I. Interaction-Driven Chern Bands and Fractional Quantum Hall States at Zero Magnetic Field.

Recent experiments on rhombohedral pentalayer graphene with a substrate-induced moiré potential have identified both Chern insulators and fractional quantum Hall states at zero magnetic field. Surprisingly, these states are observed in strong displacement fields where the effects of the moiré lattice are weak, and seem to be readily accessed without fine-tuning. To address these experimental puzzles, we study a model of interacting electrons in this geometry.

Immunoinformatics design of a multi-epitope vaccine for Chlamydia trachomatis major outer membrane proteins.

Chlamydia trachomatis (CT) remains a significant infectious cause of blindness and sexually transmitted infections worldwide. The objective and novelty of this study lie in using different serovars of CT to design a broad-spectrum multi-epitope vaccine that might confer immunity against different CT infections. As the major outer membrane protein in CT has good immunodominance properties and high conservation and also determines the several serotypes of CT, it is selected as an antibody target in this study.

UOTe: Kondo-Interacting Topological Antiferromagnet in a Van der Waals Lattice.

Since the initial discovery of 2D van der Waals (vdW) materials, significant effort has been made to incorporate the three properties of magnetism, band structure topology, and strong electron correlations-to leverage emergent quantum phenomena and expand their potential applications. However, the discovery of a single vdW material that intrinsically hosts all three ingredients has remained an outstanding challenge. Here, the discovery of a Kondo-interacting topological antiferromagnet is reported in the vdW 5f electron system UOTe.

Decoupling of motor cortex to movement in Parkinson's dyskinesia rescued by sub-anaesthetic ketamine.

Gamma band and single-unit neural activity in primary motor cortex (M1) are involved in the control of movement. This activity is disrupted in Parkinson's disease (PD) and levodopa-induced dyskinesia (LID), a debilitating consequence of dopamine replacement therapy for PD. Physiological features of LID include pathological narrowband gamma oscillations, finely tuned gamma (FTG), and altered M1 firing activity.

Refining patient care: Evaluating prescription practices of medical residents and interns in a teaching hospital through an audit.

Objective: Hospitals in India use the National Accreditation Board for Hospitals and Healthcare Providers guidelines as criteria to ensure safe prescribing practices. This audit was conducted to provide insight into in-patient prescription of drugs to (1) evaluate the quality of prescriptions (2) reduce prescription and medication errors (3) improve the quality of care in terms of prescriptions that the hospital provides to the patient.

Methods: The cross-sectional study was conducted in an in-patient department of a tertiary care teaching hospital in Chennai where 153 paper-based prescriptions were continuously collected from the internal medicine department over 1 month.

The Antimanic Effect of Endoxifen in Patients with Bipolar Disorder with Renal Comorbidities: Case Series.

The conventional and standard pharmacological approaches in the management of bipolar disorders include mood stabilizers and second-generation antipsychotics. However, renal problems owing to the gold standard mood stabilizer, lithium, is three times that of the general population. As bipolar I disorder (BPD I) is associated with overactive protein kinase C (PKC) intracellular signaling, a novel approach in the management of acute mania/mixed affective states of bipolar disorder includes the use of PKC inhibitors, such as Tamoxifen and its derivative metabolite molecule, Endoxifen.

Delusional Procreation Syndrome: A Citation Analysis and Review from the First 12 Years of Publication.

Background: Delusional procreation syndrome (DPS) consists of sequential delusions related to human procreation. It was first coined in a case series in 2010. The most common delusion among DPS is related to pregnancy.

Open-chest cardiac ultrasound-mediated imaging with a vacuum coupler.

Background: A fundamental obstacle for the preclinical development of ultrasound-(US) mediated cardiac imaging remains cardiac motion, which limits interframe correlation during extended acquisition periods.

Purpose: To address this need, we present the design and implementation of a 3D-printed vacuum coupler that stabilizes a US transducer on the epicardial surface of the heart for feasibility assessment and development of advanced, cardiac, US-mediated imaging approaches.

Methods: The vacuum coupler was 3D printed with biocompatible resins and secured with a standard intraoperative suction aspirator.

Bioengineered lubricin alters the lubrication modes of cartilage in a dose-dependent manner.

The low friction nature of articular cartilage has been attributed to the synergistic interaction between lubricin and hyaluronic acid in the synovial fluid (SF). Lubricin is a mucinous glycoprotein that lowers the boundary mode coefficient of friction of articular cartilage in a dose-dependent manner. While there have been multiple attempts to produce recombinant lubricin and lubricin mimetic cartilage lubricants over the last two decades, these materials have not found clinical use due to challenges associated with large scale production, manufacturing, and purification.

Convergent olfactory circuits for courtship in revealed by -Tango.

Animals exhibit sex-specific behaviors that are governed by sexually dimorphic circuits. One such behavior in male , courtship, is regulated by various sensory modalities, including olfaction. Here, we reveal how sexually dimorphic olfactory pathways in male flies converge at the third-order, onto lateral horn output neurons, to regulate courtship.

Catheter Exchange With Elongation of Tunnel (CEET) Procedure-A Novel Technique for Cuff Extrusion of Tunneled Dialysis Catheter: Surgical Experience and Early Outcomes.

Background: Cuff extrusion of tunneled dialysis catheter (TDC) leads to catheter dysfunction, leading to loss of vascular access and the need for new catheter. Definitive management is to remove TDC and reinsert new catheter by new venous puncture and tunnel, which may not be possible in all cases. The study evaluated the surgical experience and early outcomes of a novel "Catheter Exchange with Elongation of Tunnel (CEET)" procedure for cuff extrusion.

Isoxazole based nucleosides induce autophagy through the production of ROS and the suppression of the β-catenin pathway in human colorectal carcinoma cells.

β-catenin is frequently implicated in signaling pathways that regulate autophagy, and the production of reactive oxygen species (ROS) has been linked to autophagy activation. Isoxazole-based nucleoside compounds have demonstrated anti-cancer properties. In this study, we report the identification of novel isoxazole-nucleosides as anti-tumor agents and their impact on autophagy in human colorectal carcinoma (CRC) cells.

A Study of Cadaveric Skin Graft Harvest and Usage: An Observational Prospective Pilot Study.

Background Burn injuries pose a significant global public health challenge, causing substantial morbidity and mortality, particularly in low- and middle-income countries. Timely and effective wound coverage is critical in treating severe burns to prevent infection, reduce pain, and promote healing. Cadaveric skin grafts (allografts) have become essential in treating extensive burn wounds, serving as temporary biological dressings to prepare the wound bed for autografting.

Specific Degradation of the Mucin Domain of Lubricin in Synovial Fluid Impairs Cartilage Lubrication.

Progressive cartilage degradation, synovial inflammation, and joint lubrication dysfunction are key markers of osteoarthritis. The composition of synovial fluid (SF) is altered in OA, with changes to both hyaluronic acid and lubricin, the primary lubricating molecules in SF. Lubricin's distinct bottlebrush mucin domain has been speculated to contribute to its lubricating ability, but the relationship between its structure and mechanical function in SF is not well understood.