25,008 results match your criteria: "Qatar; Dermatology Institute[Affiliation]"

Characterization of the host specificity of the SH3 cell wall binding domain of the staphylococcal phage 88 endolysin.

Arch Microbiol

January 2025

Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Selangor, 43400, Malaysia.

Bacteriophages produce endolysins at the end of the lytic cycle, which are crucial for lysing the host cells and releasing virion progeny. This lytic feature allows endolysins to act as effective antimicrobial alternatives when applied exogenously. Staphylococcal endolysins typically possess a modular structure with one or two enzymatically active N-terminal domains (EADs) and a C-terminal cell wall binding domain (CBD).

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Purpose: The objective of this systematic review is to evaluate the patterns of postsurgical site infections, pre-surgical antibiotics prophylaxis, and related clinical outcomes in the recently published literature.

Methods: This systematic review is registered with PROSPERO registration number CRD42023398963. Several databases and individual journal websites were used to collect data from PubMed/Medline, TRIP, SCOPUS, Elsevier, Springer, ProQuest, and EMBASE.

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Objectives: The chemiluminescence immunoassay automated Abbott ARCHITECT hepatitis B surface antigen (HBsAg) screening assay is globally recognized for its superior sensitivity but notably low specificity. This mandates positive results confirmation by another confirmatory assay, such as the widely used Abbott ARCHITECT HBsAg neutralizing assay. This study aimed to evaluate the performance of the new chemiluminescence immunoassay, Mindray CL-900i HBsAg screening assay in comparison to the ARCHITECT neutralizing/confirmatory assay.

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Background: Previous studies suggest similar cardiovascular (CV) benefits for either percutaneous coronary intervention (PCI) or coronary artery bypass graft (CABG) in patients with left main coronary artery disease (LMCAD). However, limited data exist on the influence of prior cerebrovascular disease (CEVD). Thus, we aim to compare the CV outcomes in patients with LMCAD and prior CEVD, undergoing either PCI or CABG.

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Adapting a style based generative adversarial network to create images depicting cleft lip deformity.

Sci Rep

January 2025

Division of Plastic, Craniofacial and Hand Surgery, Sidra Medicine, and Weill Cornell Medical College, C1-121, Al Gharrafa St, Ar Rayyan, Doha, Qatar.

Training a machine learning system to evaluate any type of facial deformity is impeded by the scarcity of large datasets of high-quality, ethics board-approved patient images. We have built a deep learning-based cleft lip generator called CleftGAN designed to produce an almost unlimited number of high-fidelity facsimiles of cleft lip facial images with wide variation. A transfer learning protocol testing different versions of StyleGAN as the base model was undertaken.

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Entrapment neuropathies of the lower extremity are often underdiagnosed due to limitations in clinical examination and electrophysiological testing. Advanced imaging techniques, particularly MR neurography and high-resolution ultrasonography (US), have significantly improved the evaluation and diagnosis of these conditions by enabling precise visualization of nerves and their surrounding anatomical structures. This review focuses on the imaging features of compressive neuropathies affecting the lumbosacral plexus and its branches, including the femoral, obturator, sciatic, common peroneal, and tibial nerves.

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Progesterone induces meiosis through two obligate co-receptors with PLA2 activity.

Elife

January 2025

Calcium Signaling Group, Research Department, Weill Cornell Medicine Qatar, Education City, Qatar Foundation, Doha, Qatar.

The steroid hormone progesterone (P4) regulates multiple aspects of reproductive and metabolic physiology. Classical P4 signaling operates through nuclear receptors that regulate transcription. In addition, P4 signals through membrane P4 receptors (mPRs) in a rapid nongenomic modality.

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A measurement of the dijet production cross section is reported based on proton-proton collision data collected in 2016 at by the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of up to 36.3 . Jets are reconstructed with the anti- algorithm for distance parameters of and 0.

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Unusual presentation of medication-induced atrial fibrillation: A case report.

Clin Case Rep

February 2025

Department of Emergency Medicine Hamad Medical Corporation Doha Qatar.

This case highlights that atrial fibrillation can occur as an adverse effect of tamsulosin even in younger patients at lower doses, challenging the conventional understanding that this complication primarily affects older individuals on higher doses. Clinicians should remain vigilant for this potential side effect across all patient demographics to ensure prompt identification and management.

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Serious lower limb injuries following car gearbox explosion: A rare case report.

Trauma Case Rep

February 2025

Department of Surgery, Trauma & Vascular Surgery, Clinical Research, Hamad Medical Corporation, Doha, Qatar.

Car Gearbox explosion-related injuries are very rare but could be serious. We reported a 43-year-old female patient who sustained severe bilateral lower limb injuries following an explosion of the gearbox in her private car while waiting at a traffic signal. The patient suffered from a left open tibia shaft fracture and severely macerated soft tissues, along with an open wound on the right leg.

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Background: Systemic lupus erythematosus (SLE) is a complex autoimmune disease with multisystemic involvement and unclear etiology. Although SLE could be linked to multiple neuropsychiatric manifestations, the co-occurrence of anorexia nervosa was only described through a few case reports that mainly affected children and adolescents.

Case Presentation: a 40-year-old Filipina woman presented to hospital with a 3-day history of agitation, anorexia and auditory hallucinations.

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Dual-Ligand Assisted Anisotropic Assembly for the Construction of NIR-II Light-Propelled Mesoporous Nanomotors.

J Am Chem Soc

January 2025

Department of Chemistry, Shanghai Stomatological Hospital & School of Stomatology, State Key Laboratory of Molecular Engineering of Polymers, iChem (Collaborative Innovation Center of Chemistry for Energy Materials), Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, P. R. China.

The advent of autonomous nanomotors presents exciting opportunities for nanodrug delivery. However, significant potential remains for enhancing the asymmetry of nanomotors and advancing the development of second near-infrared (NIR-II) light-propelled nanomotors capable of operating within deep tissues. Herein, we developed a dual-ligand assisted anisotropic assembly strategy that enables precise regulation of the interfacial energy between selenium (Se) nanoparticle and periodic mesoporous organosilica (PMO).

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Aim: To describe the self-reported mental health of nurses from 35 countries who worked during the COVID-19 pandemic.

Background: There is little occupationally specific data about nurses' mental health worldwide. Studies have documented the impact on nurses' mental health of the COVID-19 pandemic, but few have baseline referents.

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Background: Glioblastoma (GBM) is a highly aggressive brain tumor associated with a poor patient prognosis. The survival rate remains low despite standard therapies, highlighting the urgent need for novel treatment strategies. Advanced imaging techniques, particularly magnetic resonance imaging (MRI), are crucial in assessing GBM.

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Aims: This study aimed to evaluate the impact of community-based dental education (CBDE) on the learning experiences of undergraduate dental students and recent dental graduates from two diverse geographical regions.

Methods: The study followed a cross-sectional design, conducted online using Google Forms, with ethical approval from Qatar University. A non-probability purposive sampling method was used to recruit dental students and recent graduates from three institutions in India and one in Qatar.

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Background: Surgery remains the cornerstone of treatment for rhabdomyosarcoma (RMS) in children. However, there is considerable variation in surgical management practices worldwide, highlighting the need for standardized Clinical Practice Guidelines (CPG).

Methods: The CPG development involved assembling a multidisciplinary group, prioritizing 10 key topic areas, conducting evidence searches, and synthesizing findings.

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The present study sought to examine the occurrence and correlates of depression, PTSD, and insomnia in a cohort of Palestinian refugees residing in camps located in Jordan during the outbreak of the War on Gaza on Oct.7th.This is a cross-sectional cohort study that employed the convenient sampling method to recruit Palestinian refugees residing in Irbid and Azmi Almufti camps for Palestinian refugees.

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Zinner syndrome (ZS) is a rare congenital urological condition characterized by a triad of ipsilateral seminal vesicle cysts, unilateral renal agenesis, and ejaculatory duct obstruction, first described in 1914. This case report details the presentation and management of a 27-year-old male diagnosed with ZS following a 2-month history of urinary frequency, hesitancy, dysuria, and painful ejaculation. Physical examination revealed a left lower abdominal mass, and imaging confirmed the classic findings of ZS, including unilateral renal agenesis, an enlarged seminal vesicle cyst, and an ectopic ureter.

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Patient engagement and shared decision-making (SDM) between patients and clinicians is the foundation of patient-centered care. It aims to reach a treatment option that fits the patient's preference and is guideline-concordant. We sought to evaluate the possible causes and outcomes of patient's non-guideline-concordant care choices.

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A review of the potential of seawater brine for enhancing food security in hot arid climates: A case study of Qatar.

J Environ Manage

January 2025

Division of Sustainable Development, College of Science and Engineering, Hamad Bin Khalifa University, Qatar Foundation, Education City, Doha, Qatar.

This study explores Qatar's utilisation of seawater to support food security, emphasising the innovative strategies and technological advancements to address the environmental and agricultural challenges posed by rejected brine from desalination processes. It examines various brine treatment and disposal methodologies, highlighting the environmental impacts and proposing sustainable solutions to mitigate these effects. The discussion further explores the potential of electrodialysis and other emerging technologies for converting rejected brine into valuable agricultural resources, thereby contributing to food security in arid regions.

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Background: Artificial Intelligence (AI) is increasingly applied in healthcare to boost productivity, reduce administrative workloads, and improve patient outcomes. In nursing, AI offers both opportunities and challenges. This study explores nurses' perspectives on implementing AI in nursing practice within the context of Jordan, focusing on the perceived benefits and concerns related to its integration.

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Climate change is making extreme heat events more frequent and intense. This negatively impacts many aspects of society, including organised sport. As the world's most watched sporting event, the FIFA World Cup commands particular attention around the threat of extreme heat.

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Objectives: The Scrotal and Penile Imaging Working Group (SPIWG) of the European Society of Urogenital Radiology (ESUR) aimed to formulate recommendations on the imaging modalities and minimal technical requirements for abdominopelvic imaging in the follow-up of adult patients treated for testicular germ-cell tumors (TGCT).

Methods: The SPIWG members performed an extensive literature search, reviewed the current clinical practice, and reached a consensus based on the opinions of experts in the field.

Results: Recurrence in patients treated for TGCT mainly occurs in retroperitoneal lymph nodes (LNs).

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Novel Ultrafiltration Polyethersulfone Membranes Blended with Carrageenan.

Polymers (Basel)

January 2025

Qatar Environment and Energy Research Institute, Hamad Bin Khalifa University, Qatar Foundation, Doha P.O. Box 34110, Qatar.

The development of ultrafiltration (UF) polymeric membranes with high flux and enhanced antifouling properties bridges a critical gap in the polymeric membrane fabrication research field. In the present work, the preparation of novel PES membranes incorporated with carrageenan (CAR), which is a natural polymer derived from edible red seaweed, is reported for the first time. The PES/CAR membranes were prepared by using the nonsolvent-induced phase separation (NIPS) method at 0.

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: All-cause mortality consisting of several heterogeneous subgroups does not have a well-defined set of risk factors. Despite the well-described role of oral hygiene on mortality, the association between the condition of the existing dentition and mortality remains unclear. Therefore, we embarked on the current study to assess the association of oral hygiene self-care (OHS) with all-cause mortality.

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