Publications by authors named "Mohamed Diab"

Introduction: We describe methods by which vasomotion can be recorded in awake and anesthetized human subjects without significant interference from other spontaneous vascular oscillations.

Methods: In three separate studies we used photoplethysmography to record vasomotion in fingertips. In Study 1 we induced chemical sympathectomy in the studied hand of 11 awake subjects who received intravenous dexmedetomidine infusions.

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Campylobacteriosis is a significant zoonosis with major public health implications. This study aimed to investigate the prevalence, molecular characteristics, and antimicrobial resistance of Campylobacter spp. in animal (rectal swabs and milk), environmental (fecal, water, and wall swabs), and human samples (stool and hand swabs) in New Valley Governorate, Egypt.

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Computational metabolomics will be established in drug discovery and research on complex biological networks. This field of research enhances the detection of metabolic biomarkers and the prediction of molecular interactions by combining multiscale analysis with and molecular docking methods. These include nuclear magnetic resonance, mass spectrometry, and innovative bioinformatics, which enable the accurate generation and characterization of metabolomes.

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Agricultural residues are produced annually; recycling these wastes in various ways is considered economically valuable. In this context, biopolymer-reinforced composite materials were developed to create alternative, eco-friendly, and sustainable resources for different applications. With advancements in innovative chemical techniques, cellulose nanofibers with silica have been simultaneously obtained.

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Halogenated spirooxindoles have garnered increasing attention as promising targeted anticancer therapy agents, owing to their improved binding affinity and ability to engage diverse molecular targets. These compounds demonstrate notable anticancer activity across various human malignancies, attributed to their selectivity targeting and reduced toxicity profiles. Functioning as multitarget agents, halogenated spirooxindoles exert biological effects through mechanisms including kinase inhibition, disruption of the MDM2-p53 interaction, DNA-binding modulation, and activation of apoptosis pathways.

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Objective: To evaluate the therapeutic potential of mesenchymal stem cells (MSCs) in alleviating carbon tetrachloride (CCl4)-induced liver damage in rats.

Methods: The study was conducted from October 2024 through February 2025. A total of 80 rats (20 rats for MSC isolation and 60 additional rats) were divided into groups.

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Background: Parkinson's Disease (PD) is a progressive neurodegenerative disorder characterized by the loss of dopaminergic neurons in the substantia nigra pars compacta. PD is diagnosed by a combination of motor symptoms including bradykinesia, resting tremors, rigidity and postural instability. Prodromal PD is the stage preceding the onset of classic motor symptoms of PD.

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Background: Athletic performance is a complex phenotype affected by individual traits, environmental conditions, training, and genetics. The peroxisome proliferator-activated receptor-alpha (PPARα) and alpha-actinin-3 (ACTN3) are two genes with the potential to influence human performance. The objective of the present study was to assess the genotype frequencies of ACTN3 (R/X) and PPARα (G/C) and to conduct a comparison of these frequencies among Egyptian adolescent athletes.

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The benzodiazines (phthalazine, quinazoline, quinoxaline, and cinnoline) have emerged as attractive scaffolds for creating novel anticancer drugs. These nitrogen-containing heterocycles are intriguing because they have a variety of configurations and can change chemically, allowing us to tailor their pharmacokinetic and pharmacodynamic features. Numerous studies have found that derivatives of these compounds have potent anticancer properties inhibiting topoisomerases, protein kinases, and receptor tyrosine kinases.

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Article Synopsis
  • Yersiniosis, caused by Yersinia enterocolitica, is a significant intestinal disorder affecting both humans and animals, with this study focusing on its prevalence in New Valley Governorate, Egypt.
  • In a total of 982 samples, Y. enterocolitica had a prevalence of 11.7% in animals, 13.2% in humans, and varying rates in milk products, showing genetic similarities among the isolates.
  • All tested isolates displayed high antibiotic resistance, which raises public health concerns regarding treatment and disease prevention, highlighting animal faeces and milk as primary infection sources.
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Background: Listeriosis is a global health threat to both animals and humans, especially in developing countries. This study was designed to isolate Listeria monocytogenes from faeces; environmental samples; and cow, sheep and goat milk, as well as human stool, to study its molecular characteristics and antibiotic sensitivity in the New Valley and Beheira Governorates, Egypt. The isolation and identification of L.

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Actinomycetes, a diverse group of bacteria with filamentous growth characteristics, have long captivated researchers and biochemists for their prolific production of secondary metabolites. Among the myriad roles played by actinomycete secondary metabolites, their historical significance in the field of biocontrol stands out prominently. The fascinating journey begins with the discovery of antibiotics, where renowned compounds like streptomycin, tetracycline, and erythromycin revolutionized medicine and agriculture.

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Lysozymes, efficient alternative supplements to antibiotics, have several benefits in poultry production. In the present study, 120, one-day-old, Ross 308 broiler chickens of mixed sex, were allocated into 2 equal groups, lysozyme treated group (LTG) and lysozyme free group (LFG), to evaluate the efficacy of lysozyme (Lysonir) usage via both drinking water (thrice) and spray (once). LTG had better ( = 0.

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The polyphagous pest, Spodoptera littoralis (Boisduval), poses a significant global economic threat by gregariously feeding on over a hundred plant species, causing substantial agricultural losses. Addressing this challenge requires ongoing research to identify environmentally safe control agents. This study aimed to elucidate the insecticidal activity of the metabolite (ES2) from a promising endophytic actinobacterium strain, Streptomyces sp.

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Background: Although the most durable method for ventral hernia repairs involves using mesh, whether to use biologic mesh versus synthetic mesh remains controversial. This study aimed to compare synthetic and biologic meshes with respect to patient-reported quality of life scores and costs after ventral hernia repair surgeries.

Methods: This study is part of the Preventing Recurrence in Clean and Contaminated Hernias (PRICE) pragmatic randomized control trial conducted from March 2014 through October 2018.

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Global campaigns to control HIV, tuberculosis, malaria, and vaccine-preventable illnesses showed that large-scale impact can be achieved by using additional international financing to support selected, evidence-based, high-impact investment areas and to catalyse domestic resource mobilisation. Building on this paradigm, we make the case for targeting additional international funding for selected high-impact investments in primary health care. We have identified and costed a set of concrete, evidence-based investments that donors could support, which would be expected to have major impacts at an affordable cost.

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The present study attempted to test the applicability of using phytoplankton as a bioindicator for assessing water quality along the Eastern Alexandria coast, Egypt. Eight stations were selected to cover the different characteristics of seawater during the summer 2022. Six algal groups were detected in different ratios: Bacillariophyceae, Cyanophyceae, Dinophyceae, Chlorophyceae, Silicoflagellata, and Euglenophyceae.

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Article Synopsis
  • * Various concentrations of BiO were tested, with 100% BiO showing the strongest antibacterial activity against both Gram-negative and Gram-positive bacteria.
  • * The research concluded that BiO-coated bagasse paper could enhance wound healing by reducing infection and promoting faster recovery when used in a rat model.
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Introduction: Poverty-related and neglected diseases (PRNDs) cause over three million deaths annually. Despite this burden, there is a large gap between actual funding for PRND research and development (R&D) and the funding needed to launch PRND products from the R&D pipeline. This study provides an economic evaluation of a theoretical global pooled-funding mechanism to finance late-stage clinical trials of PRND products.

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Insecticide resistance in agricultural pests has prompted the need to discover novel compounds with new modes of action. We investigated the potency of secondary metabolites from seventy endophytic actinobacteria against laboratory and field strains of Spodoptera littoralis (fourth instar), comparable to the bioinsecticide spinetoram (Radiant SC 12%). Endophytes from Artemisia herba-alba and A.

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Article Synopsis
  • The study introduces a new core-shell pigment made of titanium dioxide on rice husk silica ash for use in dye sublimation printing on textiles.
  • To enhance paper properties, additives like cationic polyacrylamide and bentonite were included to improve drainage and filler retention in paper made from bleached bagasse pulp.
  • The research evaluated the impact of the new pigment on the mechanical, thermal, and barrier properties of paper and examined the effectiveness of dye transfer to polyester fabrics, along with the durability of prints against washing, light, and perspiration.
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Background: Non-typhoidal Salmonella (NTS) is a major foodborne zoonotic pathogen worldwide. In the current study, Various NTS strains were isolated from (cows, milk and dairy products in addition to humans) in New Valley and Assiut Governorate, Egypt. NTS were firstly serotyped and tested by antibiotic sensitivity test.

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Background: The mismatch between the global burden of surgical disease and global health funding for surgical illness exacerbates disparities in surgical care access worldwide. Amidst competing priorities, governments need to rationally allocate scarce resources to address local needs. To build an investment case for surgery, economic data on surgical care delivery is needed.

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Background: Helicobacter pylori is one of the most common bacterial infections and is widespread globally. It causes a variety of gastrointestinal disorders, though a great proportion of infections are asymptomatic. A total of 143 fresh stool samples were collected from apparently healthy farm and pet animals (43 cattle, 50 buffaloes, 50 sheep, 50 dogs, and 50 cats), in addition to 768 human stool samples.

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