Publications by authors named "Sobhy M"

Patients with rheumatoid arthritis (RA), an inflammatory illness that affects the synovial joints, have a much worse quality of life. Mostly, oral or injectable formulations are used to treat RA, underscoring the critical need for an innovative medication delivery method to enhance therapeutic outcomes and patient compliance. The present study integrated 3D bioprinting and electrospinning technologies to create a unique double-layered transdermal patch (TDDP) for the treatment of RA.

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Background Breast cancer (BC) affects many women, and with the prevalence of anthracyclines (AC) used in treatment, cardiotoxicity is a commonly encountered problem. Objective The aim is to early detect subclinical cancer therapy-related cardiac dysfunction (CTRCD) using noninvasive imaging techniques and cardiac biomarkers. Methods Eighty-eight patients with cancer who planned to receive AC or trastuzumab (TZB) were enrolled.

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  • The study aimed to predict in-hospital mortality in patients with Acute Coronary Syndrome (ACS) using machine learning (ML) algorithms, specifically focusing on the QTc interval, and compared these predictions to established risk scores.
  • Researchers analyzed data from 500 ACS patients over two years, developing three ML models: Random Forest, Naive Bayes, and PART, measuring their effectiveness against the GRACE and TIMI risk scores.
  • The models showed promising performance, with the ML algorithms achieving an area under the curve (AUC) of 0.83 to 0.93, while the GRACE score had an AUC of 0.90, highlighting the potential of using ML for mortality prediction in hospital settings.
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Insulin is secreted by the pancreatic β-cells and regulates glucose uptake. Endoplasmic reticulum (ER) stress is known to induce insulin resistance. Identifying novel compounds, which can ameliorate ER stress and insulin resistance may be beneficial in the treatment of diabetes.

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  • Breast cancer (BC) is the most common cancer in women worldwide, characterized by high heterogeneity, treatment resistance, and risks of recurrence and metastasis.
  • Early detection and continuous monitoring are essential for improving survival rates, but the lack of precise biomarkers significantly affects patients' quality of life.
  • Recent studies highlight the role of long noncoding RNAs (lncRNAs) in understanding and managing BC, particularly in relation to specific signaling pathways and potential therapeutic strategies.
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Introduction: The renin-angiotensin-aldosterone system (RAAS) plays a pivotal role in regulating blood pressure (BP), with dysregulation of RAAS resulting in hypertension and potentially heart failure (HF), myocardial infarction (MI), cardio-renal syndrome, and stroke. RAAS inhibitors, such as angiotensin-converting enzyme inhibitors (ACEis) and angiotensin receptor blockers (ARBs), have advantages beyond BP control. However, differences between these two drug classes need to be considered when choosing a therapy for preventing cardiovascular events.

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  • The study investigates various suture configurations for repairing massive rotator cuff tears, specifically comparing the new double Mason-Allen suture to traditional techniques.
  • Twenty-five sheep shoulders were used in the experiment, with tendons repaired using five different suture methods, and tested for strength until failure.
  • Results showed that the double Mason-Allen configuration had the highest load to failure, indicating it may be the most effective option for these types of repairs.
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  • * The results indicated high encapsulation efficiencies and confirmed the formation of hydrogen bonds between the components, supported by various spectroscopy techniques.
  • * The functionalized chitosan gel showcased significantly improved antioxidant capacity and notable antimicrobial activity against specific bacteria, suggesting its potential use as a bioactive additive for food preservation.
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Back Ground: A common pedicled facial technique in head and neck reconstruction is the TMF It can be utilised to replace missing tissues in a variety of conditions, including oral deformities of the hard and soft palate.

Aim: Aim of the study was to document the utility and outcomes with the reconstruction of the palate using TM flaps following Maxillectomy For maxillary sinus malignancies.

Methodology: The study included 24 patients who were operated on for cancer maxilla and eligible for maxillectomy and reconstruction of the Palate using temporalis flap.

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The clinical studies for breast cancer (BC) are now assessing the efficacy of 2-Methoxyestradiol (2-ME), a naturally occurring derivative of estradiol. Our study aimed to explore the potential of combining the 2-ME and tamoxifen (TAM) on sensitization of TAM-resistant cells using LCC2 the TAM-resistant cells as a model and comparing the results to the sensitive cells MCF-7. Sulphorhodamine-B (SRB) assay is used to examine the 2-ME chemo-sensitizing impact on the cytotoxicity of TAM on LCC2 cells.

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There is an increasing interest in using iridoids and secoiridoids as major targets for chemical synthesis and biosynthesis. Iridoids can be found in numerous species of Lamiaceae, Verbenaceae, Scrophulariaceae, and other families. Iridoids possess a chemical structure characterized by a cyclopentane ring with oxidative substituents, forming a six-membered ring.

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Background: Fresh osteochondral allograft transplantation is a good treatment option of cartilage defects. However, this treatment option is not available in all countries due to limited graft availability and tissue banks limitations. The purpose of this study is to assess the short term functional and imaging outcomes of fresh osteochondral allograft transplantation in the knee using the femoral head of living donors.

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Single-particle cryo-electron microscopy (cryo-EM) has become an essential structural determination technique with recent hardware developments making it possible to reach atomic resolution, at which individual atoms, including hydrogen atoms, can be resolved. In this study, we used the enzyme involved in the penultimate step of riboflavin biosynthesis as a test specimen to benchmark a recently installed microscope and determine if other protein complexes could reach a resolution of 1.5 Å or better, which so far has only been achieved for the iron carrier ferritin.

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Objective: To describe the histopathological pattern of different breast lesions among tissue specimens sent to our laboratory.

Method: A record-based study using a retrospective review of 255 histologically diagnosed breast biopsy reports in the histopathology department of authors from December 2016 to November 2021 was conducted. The specimens were collected from core biopsy, lumpectomy, and mastectomy.

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Introduction: Limited data on atrial fibrillation (AF) are available from the Middle East and North Africa region (MENA). The aim of the FLOW-AF registry was to evaluate the characteristics, treatment patterns, and clinical and economic outcomes of patients with newly diagnosed non-valvular atrial fibrillation (NVAF) in MENA.

Methods: This multi-center, prospective, observational study (the FLOW-AF registry) enrolled patients newly diagnosed with NVAF across Egypt, Lebanon, Kingdom of Saudi Arabia, and United Arab Emirates.

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  • The study analyzed urodynamic parameters in 76 patients who underwent continent cutaneous urinary diversion using the Mitrofanoff principle and the Yang-Monti procedure, focusing on how well the stoma functioned over at least 6 months post-operation.
  • Results showed a high continence rate of 87%, with 66 patients classified as continent and 10 as incontinent, highlighting significant differences in their pressures and conduit lengths.
  • The evaluation revealed that in both groups, the pressures remained low during resting and contractions, but the continent group had better closure pressures and longer functional conduits compared to the incontinent group.
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Background: The radial artery is the standard access for coronary intervention; however, it is essential to have alternative accesses as it may be used as a conduit during coronary artery bypass grafting or for dialysis fistula. Ulnar and distal radial artery accesses have emerged as alternative accesses for traditional radial artery.

Aim: To compare distal radial artery access and ulnar artery access as alternatives to traditional radial artery access regarding safety, efficacy, and success rate.

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This paper presents an extensive analysis of COVID-19 with a specific focus on VEGFR-2 inhibitors as potential treatments. The investigation includes an overview of computational methodologies employed in drug repurposing and highlights research aimed at developing treatments for SARS-CoV-2. The study explores the possible effects of twenty-eight established VEGFR-2 inhibitors, which include amide and urea linkers, against SARS-CoV-2.

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The clinical usage of doxorubicin (DOX) is hampered due to cardiomyopathy. Studies reveal that estrogen (E2) modulates DOX-induced cardiotoxicity. Yet, the exact mechanism is unclear.

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Background: The Ninth Perioperative Mortality Review Committee (POMRC) report found the likelihood of death was over three times higher in Māori youth compared to non-Māori (age: 15-18 years) in the 30-days following major trauma. The aim of our study is to investigate variations in care provided to Māori youth presenting to Te Whatu Ora Counties Manukau (TWO-CM) with major trauma, to inform policies and improve care.

Methods: This was a retrospective, observational study of 15-18-year-olds admitted to Middlemore Hospital from January 2018 to December 2021 following major trauma (Injury Severity Score (ISS) >12 or with (ISS) <12 who died).

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Photovoltaic (PV) systems are becoming essential to our energy landscape as renewable energy sources become more widely integrated into power networks. Preserving grid stability, especially during voltage sags, is one of the significant difficulties confronting the implementation of these technologies. This attribute is referred to as low-voltage ride-through (LVRT).

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Background: The Program for the Evaluation and Management of Cardiac Events in the Middle East and North Africa (PEACE MENA) is a prospective registry program in Arabian countries that involves in patients with acute myocardial infarction (AMI) or acute heart failure (AHF).

Methods: This prospective, multi-center, multi-country study is the first report of the baseline characteristics and outcomes of inpatients with AMI who were enrolled during the first 14-month recruitment phase. We report the clinical characteristics, socioeconomic, educational levels, and management, in-hospital, one month and one-year outcomes.

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Background and objective The Global Registry of Acute Coronary Events (GRACE) study showed poor outcomes in ST-elevation myocardial infarction (STEMI) patients with acute heart failure (AHF) at hospital admission in terms of increased in-hospital and six-month mortality and readmission rates. In this study, we aimed to examine the effects of AHF at the time of admission on the coronary thrombus burden and post-primary percutaneous coronary intervention (PPCI) coronary flow among STEMI patients. Methods We conducted a cohort study involving 210 consecutive STEMI patients who presented to a single PPCI centre between June 2016 and January 2017.

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Aim: To investigate the dental arch dimension (width, length, and height) and facial measurements including inner-canthal width (ICW), bizygomatic width (BZW), inter-alar width (IAW), and mouth width (MW), and to assess the correlation between these facial measurements and dental arch width (canine width [CW], inter-first premolar width [I1PW], and inter-first molar width [I1MW]), to establish a preliminary reference for artificial teeth selection in Yemeni adult.

Materials And Methods: The study included 80 individuals (40 males and 40 females) with symmetrical faces and normal class I occlusion ranging in age from 20 to 35. Maxillary and mandibular stone casts were made for each individual.

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Article Synopsis
  • Electron cryomicroscopy is a method for determining the structures of most biological molecules but faces challenges like access, preparation, and cost.
  • A newly developed 100 keV instrument improves electron optics, detection, and processing, significantly reducing costs and time for structure determination to just hours.
  • This instrument demonstrated its effectiveness by accurately imaging eleven specimens, ranging from 140 kDa to 2 MDa, using much less data than traditional methods, potentially broadening the scope of structural biology research.
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