Publications by authors named "Mohamed Hafez"

Systems composed of several multi-layer compounds have been extremely useful in tailoring different quantum physical properties of nanomaterials. This is very much true when it comes to semiconductor materials and, in particular, to heterostructures and heterojunctions. The formalism of a position-dependent effective mass has proved to be a very efficient tool in those cases where quantum wells emerge either in one or two dimensions.

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Current nephrology practice starts by patient-doctor interactions and can lead to investigations. Genetic testing has had a limited role in these investigations. In the future era of precision medicine, adding genomic sequencing early in the management paradigm could modify treatment plans.

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Article Synopsis
  • The research discusses the challenges faced by the autonomous vehicle (AV) industry in improving models while maintaining data privacy and security.
  • It introduces FedLane, a novel solution using Federated Learning (FL) to enhance lane segmentation models (U-Net, ResUNet, ResUNet++) through initial training and real-time inference without compromising client data.
  • The results show a significant improvement in lane segmentation performance, with an increase in the dice coefficient for all models, suggesting FL could greatly influence the future of automation in AVs.
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The newly recorded Phyllymenia gibesii in the Mediterranean Sea at Alexandria coast of Egypt is regarded as a significant source of bioactive substances and is applied as an antioxidant, anti-inflammatory, and antimicrobial agent. According to the HPLC chromatograms, the acetone extract of P. gibesii comprised ten photosynthetic pigments (chlorophyll-a, chlorophyll-d, α-carotene, β-carotene, phycocyanin, allophycocyanin, antheraxanthin, β-cryptoxanthin, lutein, and violaxanthin).

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Therapeutics that interfere with the damage/pathogen-associated molecular patterns (DAMPs/PAMPs) have evolved as promising candidates for hepatic inflammation like that occurring in non-alcoholic fatty liver disease (NAFLD). In the current study, we examined the therapeutic impact of the phosphodiesterase-1 inhibitor vinpocetine (Vinpo), alone or when combined with Lactobacillus, on hepatic abnormalities caused by a 13-week high-fat diet (HFD) and diabetes in rats. The results show that Vinpo (10 and 20 mg/kg/day) dose-dependently curbed HFD-induced elevation of liver injury parameters in serum (ALT, AST) and tissue histopathology.

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In Egypt, there is presently a growing need to have a deceased donor transplant program. Egypt conducted its first kidney transplant from a living donor in 1976 and a first partial liver transplant in 2001. Since 2009, the Egyptian Health Authorities Combat Transplant Tourism in concordance with ethics codes and the Declaration of Istanbul Custodian Group has been in place.

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Article Synopsis
  • Cervical cancer is primarily associated with HPV types 16 and 18, and the study investigates the antiviral and anticancer potential of Tanacetum sinaicum essential oil (EO) on human cervical and breast cancer cell lines.
  • The EO was extracted and characterized, and its effects on cell viability were measured; it was found to significantly reduce the growth of cancer cells in a dose-dependent manner, with higher concentrations leading to over 95% inhibition.
  • Additionally, the EO effectively decreased HPV replication in the tested cell lines and exhibited autophagy-enhancing and genotoxic effects, suggesting its potential roles in cancer treatment.
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Objective: To identify underlying factors associated with single versus multiple expulsions of tunneled hemodialysis catheter cuffs and their associated complications.

Materials And Methods: A multicenter, five-year retrospective data analysis was conducted on hemodialysis patients with tunneled catheters. Patient data included age, gender, BMI, and associated comorbidities.

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Background: Transcatheter Aortic Valve Implantation (TAVI) has a growing target population after being indicated even in low-surgical-risk patients with severe symptomatic aortic stenosis. However, postoperative outcomes can be compromised due to para-valvular leakage (PVL). A lot of procedural steps have been investigated to decrease this partially avoidable operational hazard.

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Chronic kidney disease (CKD) is a major public health concern in the Middle East and Africa (MEA) region and a leading cause of death in patients with type 2 diabetes mellitus (T2DM) and hypertension. Early initiation of sodium-glucose cotransporter - 2 inhibitors (SGLT-2i) and proper sequencing with renin-angiotensin-aldosterone system inhibitors (RAASi) in these patients may result in better clinical outcomes due to their cardioprotective properties and complementary mechanisms of action. In this review, we present guideline-based consensus recommendations by experts from the MEA region, as practical algorithms for screening, early detection, nephrology referral, and treatment pathways for CKD management in patients with hypertension and diabetes mellitus.

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Aim: Motorised intramedullary lengthening nails are considered more expensive than external fixators for limb lengthening. This research aims to compare the cost of femoral lengthening in children using the PRECICE magnetic lengthening nail with external fixation.

Methods: Retrospective analysis of 50 children who underwent femoral lengthening.

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Calcareous soils are characterized by a high calcium carbonate content (calcite), which plays a crucial role in the soil structure, plant growth, and nutrient availability. The high content of CaCO leads to the increment of the soil alkalinity, which results in a lowering of the nutrient availability causing a challenge for the agriculture in these soils. In this study, the calcite-solubilizing potential of the diazotrophic Azotobacter salinestris YRNF3 was investigated in vitro as a probable bio-agent for enhancing the calcareous soils properties such as soil pH and nutrient availability.

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Objective: Sesamol (SES) is a phenolic compound found in sesame seed oil. Several studies have revealed its anti-inflammatory and antioxidant properties. However, its complete underlying mechanistic perspective about cerebral ischemia/reperfusion (I/R) lesions has not yet been disclosed.

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Article Synopsis
  • The study focuses on a destructive pathogen of wheat known as tan spot, caused by an ascomycete fungus, which has a highly variable genome influenced by the gain and loss of effector genes.
  • Researchers analyzed allelic variations in a specific chlorosis-encoding gene across 422 isolates from different regions and pathotypes, constructing a haplotype network to understand its evolutionary relationships.
  • Key findings include discovering a retrotransposon that disrupts gene function, identifying numerous mutations, and recognizing ToxB-like proteins in various other species, implying historical horizontal gene transfer during the evolution of these genes.
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This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at https://www.

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Plant pathogenic Fusarium spp. are widespread and cause important diseases on a wide host range, including economically important cereal and pulse crops. A number of molecular methods have been used to detect, identify, and quantify a long list of plant pathogenic Fusarium spp.

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Background: Spontaneous third ventriculostomy (STV) is a rare occurrence in cases of obstructive hydrocephalus where the walls of the third ventricle rupture, communicating the ventricular system, and the subarachnoid space leading to arrest of active hydrocephalus. We aim to review our series of STVs while reviewing previous reports.

Methods: A retrospective review of cases undergoing cine phase-contrast magnetic resonance imaging (PC-MRI) from 2015 to 2022 of any age with imaging evidence of arrested obstructive hydrocephalus was performed.

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Relapsing-remitting multiple sclerosis (RRMS) is the most prevalent MS subtype. Ample evidence has indicated that long noncoding RNAs (lncRNAs) are crucial players in autoimmune and inflammatory disorders. This study investigated the expression of lnc-EGFR, SNHG1, and lincRNA-Cox2 in RRMS patients during active relapses and in remission.

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The burden of chronic kidney disease (CKD) and other comorbidities, such as hypertension and diabetes, which increase the risk of developing CKD, is on the rise in the Middle East and Africa. The Middle East and Africa CKD (MEA-CKD) steering committee, comprising eminent healthcare specialists from the Middle East and Africa, was formed to identify and propose steps to address the gaps in the management of CKD in these regions. The current article lists the MEA-CKD steering committee meeting outcomes and evaluates the available evidence supporting the role of novel therapeutic options for patients with CKD.

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ToxA is one of the most studied proteinaceous necrotrophic effectors produced by plant pathogens. It has been identified in four pathogens (, , [formerly f. sp.

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With respect to the potential natural resources in the marine environment, marine macroalgae or seaweeds are recognized to have health impacts. Two marine algae that are found in the Red Sea, (Green algae) and (Red algae), were collected. Antibacterial and antioxidant activities of aqueous extracts of these algae were evaluated in vitro.

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