The association of health anxiety with quality of life among medical students in Egypt: Myth or Menace?

Background: Health anxiety (HA) is a prevalent concern among medical students, potentially impacting their academic performance and Quality of Life (QoL). This study aims to assess the prevalence of HA and its predictors among medical students in Egypt and its correlation with the Quality of Life.

Methods: A descriptive cross-sectional study was conducted during the 2022-2023 academic year across ten Egyptian medical schools.

Toward the Electrostatic Catalysis of Nucleophilic Substitutions: A Surface Chemistry Study of the Menshutkin Reaction.

The catalysis of nonredox reactions by external electric fields is one of the most rapidly expanding areas of chemistry. The Menshutkin reaction, a classic example of bimolecular nucleophilic substitution (S2), involves the conversion of a tertiary amine to a quaternary ammonium salt by coupling it with an alkyl halide. The reaction barrier of the Menshutkin reaction is theoretically predicted to be highly sensitive to the magnitude and direction of an external electric field experienced by the transition state.

Enhancing vascular surgery outcomes through geriatric co-management: a study on the impact of the POPS team.

Introduction: Peripheral arterial disease (PAD) involves atherosclerotic stenosis and occlusion of lower leg arteries, leading to significant disability, high cardiovascular and cerebrovascular morbidity and mortality. Critical limb ischemia (CLI) is the most severe form of PAD. With the UK's aging population set to increase, the prevalence of PAD and the burden on vascular teams are expected to rise.

Adipose-Derived Stromal Cells and Cancer-Associated Fibroblasts: Interactions and Implications in Tumor Progression.

Adipose-derived stromal cells (ASCs) and cancer-associated fibroblasts (CAFs) play pivotal roles in the tumor microenvironment (TME), significantly influencing cancer progression and metastasis. This review explores the plasticity of ASCs, which can transdifferentiate into CAFs under the influence of tumor-derived signals, thus enhancing their secretion of extracellular matrix components and pro-inflammatory cytokines that promote tumorigenesis. We discuss the critical process of the epithelial-to-mesenchymal transition (EMT) facilitated by ASCs and CAFs, highlighting its implications for increased invasiveness and therapeutic resistance in cancer cells.

Bilateral spontaneous internal carotid artery dissection; a treatment dilemma: A case report and literature review.

Introduction: Spontaneous carotid artery dissection in association with exercise is well known. A bilateral occurrence is a rarely reported finding. SVS guidelines discussed the role of antiplatelets and anticoagulants in management, however, management of dissections associated with pseudoaneurysm formation is still controversial.

Proposed Screening for Congenital Hyperinsulinism in Newborns: Perspective from a Neonatal-Perinatal Medicine Group.

This perspective work by academic neonatal providers is written specifically for the audience of newborn care providers and neonatologists involved in neonatal hypoglycemia screening. Herein, we propose adding a screen for congenital hyperinsulinism (CHI) by measuring glucose and ketone (i.e.

Cohort profile of an early life observational cohort in China: Bone and MicroBiOme onset (BAMBOO) study.

Purpose: The Bone And MicroBiOme Onset (BAMBOO) study is an ongoing prospective observational cohort study conducted in Tianjin, China, aiming to determine age-appropriate trajectories for microbiome maturation and bone development and to identify the influence of dietary factors in the process.

Participants: The recruitment started in September 2021 and was completed in February 2023. A total of 1380 subjects were recruited, 690 at birth (group 1) and 690 at 6 months of age (group 2).

An ensemble learning model for forecasting water-pipe leakage.

Based on the benefits of different ensemble methods, such as bagging and boosting, which have been studied and adopted extensively in research and practice, where bagging and boosting focus more on reducing variance and bias, this paper presented an optimization ensemble learning-based model for a large pipe failure dataset of water pipe leakage forecasting, something that was not previously considered by others. It is known that tuning the hyperparameters of each base learned inside the ensemble weight optimization process can produce better-performing ensembles, so it effectively improves the accuracy of water pipe leakage forecasting based on the pipeline failure rate. To evaluate the proposed model, the results are compared with the results of the bagging ensemble and boosting ensemble models using the root-mean-square error (RMSE), the mean square error (MSE), the mean absolute error (MAE), and the coefficient of determination (R2) of the bagging ensemble technique, the boosting ensemble technique and optimizable ensemble technique are higher than other models.

Electrostatic catalysis of a click reaction in a microfluidic cell.

Electric fields have been highlighted as a smart reagent in nature's enzymatic machinery, as they can directly trigger or accelerate chemical processes with stereo- and regio-specificity. In enzymatic catalysis, controlled mass transport of chemical species is also key in facilitating the availability of reactants in the active reaction site. However, recent progress in developing a clean catalysis that profits from oriented electric fields is limited to theoretical and experimental studies at the single molecule level, where both the control over mass transport and scalability cannot be tested.

Exploring the Combined Effect of Exercise and Apigenin on Aluminium-Induced Neurotoxicity in Zebrafish.

Aluminium (AL) is a strong environmental neurotoxin linked to neurodegenerative disorders. Widespread industrial use leads to its presence in water systems, causing bioaccumulation in organisms. This, in turn, results in the bioaccumulation of AL in various organisms.

That head lag is impressive! Infantile botulism in the NICU: a case report.

Background: Infantile botulism (IB) is a devastating and potentially life-threatening neuromuscular disorder resulting from intestinal colonization by Clostridium botulinum and the resultant toxin production. It can present with constipation, descending paralysis, and, potentially, respiratory failure. Botulism is a diagnosis that is more commonly seen in the pediatric intensive care unit (PICU) or on the general pediatric wards and would not typically be managed in the neonatal intensive care unit (NICU), and therefore requires high clinical suspicion to ensure prompt diagnosis and treatment.

12-HETE activates Müller glial cells: The potential role of GPR31 and miR-29.

Diabetic retinopathy (DR) is a neurovascular complication of diabetes, driven by an intricate network of cellular and molecular mechanisms. This study sought to explore the mechanisms by investigating the role of 12-hydroxyeicosatetraenoic acid (12-HETE), its receptor GPR31, and microRNA (miR-29) in the context of DR, specifically focusing on their impact on Müller glial cells. We found that 12-HETE activates Müller cells (MCs), elevates glutamate production, and induces inflammatory and oxidative responses, all of which are instrumental in DR progression.

Galinstan Liquid Metal Electrical Contacts for Monolayer-Modified Silicon Surfaces.

Galinstan is the brand name for a low-melting gallium-based alloy, which is a promising nontoxic alternative to mercury, the only elemental metal found in the liquid state at room temperature. Liquid alloys such as Galinstan have found applications as electromechanical actuators, sensors, and soft contacts for molecular electronics. In this work, we validate the scope of Galinstan top contacts to probe the electrical characteristics of Schottky junctions made on Si(111) and Si(211) crystals modified with Si-C-bound organic monolayers.

Successes of a Focused Mothers' Own Milk (MOM) Program in Counteracting Unintended Effects of a Donor Milk Program on MOM Rates at Discharge.

Avoidance of early formula feeding (EFF) and advancement of mother's own milk (MOM) in very low birth weight (VLBW) infants are important health influencers to decrease serious morbidities. To present the challenges and feeding strategy successes implemented to counteract a decline in MOM at discharge after initiation of donor milk (DM) to avoid EFF in racially and ethnically diverse VLBW infants. Retrospective review of prospectively tracked inborn surviving VLBW infants and their mothers admitted to neonatal intensive care unit from 2010 to 2020 during three feeding strategy implementations baby friendly (BF), DM program, and MOM bundle.

Ameloblastic fibro-dentinoma: a rare mixed odontogenic tumor case report with review of literature.

Background: Ameloblastic fibro-dentinoma is considered a rare, benign, mixed odontogenic tumor that occurs mainly in the posterior mandible in the 1st-2nd decade of life. Although the clinical behavior of Ameloblastic fibro-dentinoma is similar to that of ameloblastic fibroma, there is a debate about whether Ameloblastic fibro-dentinoma is a developing hamartomatous odontoma or a separate neoplastic odontogenic tumor like ameloblastic fibroma. However, it is important to understand the histopathogenesis of this rare tumor.

Controlling piezoresistance in single molecules through the isomerisation of bullvalenes.

Nanoscale electro-mechanical systems (NEMS) displaying piezoresistance offer unique measurement opportunities at the sub-cellular level, in detectors and sensors, and in emerging generations of integrated electronic devices. Here, we show a single-molecule NEMS piezoresistor that operates utilising constitutional and conformational isomerisation of individual diaryl-bullvalene molecules and can be switched at 850 Hz. Observations are made using scanning tunnelling microscopy break junction (STMBJ) techniques to characterise piezoresistance, combined with blinking (current-time) experiments that follow single-molecule reactions in real time.

Terminal Deuterium Atoms Protect Silicon from Oxidation.

In recent years, the hybrid silicon-molecular electronics technology has been gaining significant attention for applications in sensors, photovoltaics, power generation, and molecular electronics devices. However, Si-H surfaces, which are the platforms on which these devices are formed, are prone to oxidation, compromising the mechanical and electronic stability of the devices. Here, we show that when hydrogen is replaced by deuterium, the Si-D surface becomes significantly more resistant to oxidation when either positive or negative voltages are applied to the Si surface.

A Narrative Review of Osteoid Osteomas and an Audit on the Practice of CT-Guided Radiofrequency Ablation in the Northern Irish Population: A First in the Literature.

Introduction Osteoid osteoma is a benign condition of the bone, usually affecting young males. This retrospective study explores the demographics of osteoid osteomas in the Northern Irish population. It also aims to audit the practice of CT-guided radiofrequency ablation of osteoid osteomas at a major orthopaedic centre in Belfast, Northern Ireland, and to investigate the possible causes of treatment failure.

Long-term follow-up after endovascular treatment of aortic coarctation with bare and covered Cheatham platinum stents.

Background: Endovascular treatment of aortic coarctation (CoA) in children and adults frequently requires stent implantation. The aim of this study was to analyze long-term results after CoA treatment with bare and covered Cheatham-Platinum (CP) stents in our institution and to derive recommendations for the differential use of these stent types.

Methods: In this retrospective single institution study, 212 patients received endovascular CoA treatment with bare (n = 71) and covered (n = 141) CP stents between September 1999 and July 2021, respectively.

A Review on Membrane Fouling Prediction Using Artificial Neural Networks (ANNs).

Membrane fouling is a major hurdle to effective pressure-driven membrane processes, such as microfiltration (MF), ultrafiltration (UF), nanofiltration (NF), and reverse osmosis (RO). Fouling refers to the accumulation of particles, organic and inorganic matter, and microbial cells on the membrane's external and internal surface, which reduces the permeate flux and increases the needed transmembrane pressure. Various factors affect membrane fouling, including feed water quality, membrane characteristics, operating conditions, and cleaning protocols.