Publications by authors named "Kamel A"

Integrating nanotechnology with tissue engineering has revolutionized biomedical sciences, enabling the development of advanced therapeutic strategies. Tissue engineering applications widely utilize alginate due to its biocompatibility, mild gelation conditions, and ease of modification. Combining different nanomaterials with alginate matrices enhances the resulting nanocomposites' physicochemical properties, such as mechanical, electrical, and biological properties, as well as their surface area-to-volume ratio, offering significant potential for tissue engineering applications.

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This investigation aimed to study the effects of varying light exposure durations on ram sperm. A total of 25 rams were randomly divided into five groups. The control group was exposed to light durations of 12 h, while the experimental groups were exposed to light durations of 14, 16, 18, and 20 h.

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Background: Studies on renal vein thrombosis have been conducted as case reports or case series. The renal outcomes and mortality risk of renal vein thrombosis have not been fully established. We aimed to investigate the clinical characteristics, treatment modalities, and predictors of renal outcomes and mortality in patients with renal vein thrombosis in a large multicenter cohort.

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Introduction Many studies have supported inflammation as a mediator of lipoprotein (a) (Lp(a)) induced increase in cardiovascular disease risk, as it has pro-inflammatory effects on endothelial cells and monocytes. Aim This study aims to correlate Lp(a) level with different monocyte subsets in coronary atherosclerotic patients with different severity. Method The study included 60 patients with a mean age of 53.

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Background: Integrating digital health and telemedicine technologies is transforming healthcare delivery. In light of this transition, it is critical to ascertain the efficacy of patient safety protocols and evaluate the awareness of healthcare professionals, particularly nurses, regarding the integration of digital health technologies.

Aim: This study examines the factors influencing the successful adoption of digital health and telemedicine technologies from the nurses' perspective, focusing on ensuring patient safety and enhancing organizational readiness for digital health integration.

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Background: Diabetes is one of the most common chronic diseases that severely reduce a patient's quality of life. Effective self-care and management are critical for maintaining blood glucose levels and preventing complications.

Aim: This study evaluates the effectiveness of a structured diabetes self-management education program on patients' self-management behaviors, empowerment, and activation levels.

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Mitochondrial dysfunction has been implicated in the pathogenesis of several neurodegenerative disorders, including progressive supranuclear palsy (PSP). PSP is a Parkinsonian syndrome characterized by a rapidly progressive state that manifests itself as tremors, bradykinesia, and supranuclear gaze palsy. Carnitine plays an essential role in mitochondrial function by transporting fatty acids across the mitochondrial membrane to be used in energy production.

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  • Sustainable hydrogel dressings were created using chitosan and polyvinyl pyrrolidone and enhanced with zinc or zinc-silver nanocages for wound healing.
  • The dressings demonstrated excellent antibacterial and antifungal properties, promoting a moisture-balanced environment that supports rapid healing.
  • Testing showed that these dressings are safe for skin cells and led to significant healing (up to 69% in 7 days) through reduced inflammation and enhanced cell growth factors.
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Background The coronavirus disease 2019 (COVID-19) was an expanding pandemic caused by a new strain of the coronavirus family known as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). No previous studies have examined the impact of COVID-19 pandemic on physical therapy practice in Egypt. Objectives This study aimed to assess the impact of COVID-19 pandemic on physical therapy clinical practice in Egypt five months after the pandemic declaration.

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In this study, a rapid, precise, and targeted electroanalytical method was developed for the trace determination of 4-chlorophenol (4-CP). The study reports the use of cyclic voltammetry (CV) to characterize the electrochemical response of 4-CP and the optimization of differential pulse voltammetry (DPV) settings for its sensitive quantification. Screen-printed carbon electrodes (SPCEs) were selected for the sensitive detection of 4-CP using DPV.

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  • This systematic review investigates the cost-effectiveness of brexu-cel, a treatment for mantle cell lymphoma and acute lymphoblastic leukemia, across different countries.
  • A thorough search was conducted, leading to the review of 149 records, of which 22 were fully analyzed, resulting in five articles and seven health technology assessment (HTA) reports meeting the criteria.
  • The findings indicate that brexu-cel is deemed cost-effective in several studies, particularly in Scotland, but some HTA agencies expressed doubts about its cost-effectiveness for certain conditions.
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Brain aneurysms, characterized by abnormal bulging in blood vessels, pose significant risks if ruptured, necessitating precise neuroanatomical knowledge and advanced neurosurgical techniques for effective management. This article delves into the intricate neuroanatomy relevant to brain aneurysms, including the vascular structures and critical regions involved. It provides a comprehensive overview of the pathophysiology of aneurysm formation and progression.

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A magnetic nanocomposite adsorbent, comprised of macroporous iron oxide/manganese oxide (α-FeO/MnO), is prepared, characterized, and used for lead(II) removal from both industrial wastewater and leachate of electronic waste. The synergistic interaction between iron oxide and manganese oxide significantly enhances the adsorption performance. The surface characteristics and structural composition of the nanocomposite are examined using high-resolution transmission microscopy, X-ray spectroscopy, and Brunauer-Emmett-Teller methods.

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  • - A novel pH monitoring electrode was created using a glass substrate coated with cerium-doped tin oxide (Ce-doped SnO), applied via spray-pyrolysis, ensuring a compact design suitable for portable devices.
  • - Characterization techniques like FESEM and XRD demonstrated the electrode's excellent response characteristics, such as a near-Nernstian slope, high stability, and selectivity against common interferents, making it effective in measuring pH levels from 2 to 12 in various solutions.
  • - The performance of the Ce-doped SnO electrode was validated against traditional methods, showing comparable results when monitoring the pH of real samples like water and juices, thus highlighting its potential for quality control in analytical
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Despite its established anti-diabetic activity, Metformin hydrochloride (MET) has been repurposed for the management of hepatocellular carcinoma (HCC). Owing to MET high aqueous solubility and poor oral permeability, a novel nanoplatform is sought to overcome the current challenges of traditional formulations. In this study, we developed MET-bridged nanocochleates (MET-CO) using a direct bridging method followed by optimization and assessment using various in-vitro and in-vivo pharmacokinetic methods.

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  • * It favors percutaneous endoscopic gastrostomy (PEG) over interventional radiology-guided options and recommends starting tube feeding within 4 hours post-procedure.
  • * Additionally, the guideline states that antiplatelet medications usually don’t need to be stopped before PEG, while anticoagulant management should involve a team discussion considering bleeding and cardiovascular risks.
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Background: The high rates of the sustained virologic response 12 weeks after treatment (SVR12) in real world settings provoked the adoption of shortened courses of the costly direct-acting antivirals (DAAs) regimens. This study provides, to our knowledge, the first systematic review and meta-analysis for the efficacy of the shortened 8-week course of sofosbuvir (SOF) plus daclatasvir (DCV), the most accessible DAAs in the low-middle income countries (LMICs).

Methods: We performed a proportion meta-analysis to determine a reliable rate of SVR12 by pooling all studies that evaluated the results of the 8-week regimen of DCV + SOF.

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Background: Nutritional interventions with natural antioxidants can provide a pragmatic solution for modifying hens' performance and maintaining oxidative stability of eggs during storage. Quercetin is the most abundant flavonoids with potent antioxidant and immune stimulant activities. The concept of incorporating of quercetin, as potent antioxidant and immunostimulant, into effective nano-carriers (QNPs) has promoted their bioavailability and stability thus, their effectiveness for the first time were assessed on laying hens' performance and immunity, eggs quality during storage.

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  • * The study tested different commercial acaricides, disinfectants, and natural products for their ability to prevent tick eggs from hatching, finding that certain acaricides like chlorpyrifos and amitraz were particularly effective.
  • * In field tests, phoxim showed a 40% effectiveness in preventing hatching of tick eggs, while another acaricide, deltamethrin, was only 8.79% effective, highlighting the potential for specific chemicals and natural products to control tick populations.
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  • * The study tested different concentrations of ivermectin and EOCs on Rhipicephalus annulatus tick isolates, finding that while all EOCs were toxic to the ticks, no true synergistic effect with ivermectin was identified despite some combinations showing increased mortality.
  • * The research suggests that combining ivermectin with certain EOCs, especially D-limonene and cinnamaldehyde, could enhance tick control methods, and further research is recommended to assess effectiveness in real-world scenarios.
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Learning from data with long-tailed and open-ended distributions is highly challenging. In this work, we propose OLPR, which is a new dual-stream Open-set Long-tailed recognition framework based on orthogonal Prototype learning and false Rejection correction. It consists of a Probabilistic Prediction Learning (PPL) branch and a Distance Metric Learning (DML) branch.

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Breast cancer is the most common invasive cancer in women worldwide, having a significant impact on women's well-being. Early diagnosis of breast cancer followed by appropriate treatment is considered the best survival factor. Microneedles (MN) have been utilized for non-invasive localized breast cancer treatment.

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  • Glioblastoma is a notably aggressive cancer with a poor response to standard treatments, highlighting the need for improved therapeutic strategies.
  • Despite advancements in immunotherapy for other solid tumors, glioblastoma patients have not seen similar benefits, indicating a unique tumor-mediated immune suppression.
  • This review analyzes current research on immune checkpoint inhibitors in glioblastoma, including an assessment of clinical trial data to better understand patient responses to these treatments.
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  • The changes included skipping certain drugs and modifying chemotherapy regimens, with median follow-up times of around 45 months for both groups analyzed.
  • Results showed that while overall survival rates were similar (around 85%), infection-related mortality was significantly lower in the modified treatment group, suggesting that these adjustments helped reduce infection deaths without harming overall outcomes.
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To remove organic and inorganic agrochemicals from contaminated soil and water, adsorption has been regarded as a viable remediation approach. For the removal of organic pollutants, such as pesticides, cost-effective adsorbents have garnered a lot of interest. These include waste-derived materials, clay composites, metal-organic frameworks (MOFs), nanocomposites, and biochar-modified materials.

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