691 results match your criteria: "King Saud University: Riyadh[Affiliation]"

Many naturally derived compounds are currently used in oncotherapy. Besides official medicine, complementary and alternative medicine practices, including old herbal remedies, are widely used and accepted as additional tools in cancer treatment. Nakai (AGN), a medicinal herb in Asia, has roots historically used in medicine.

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Iron deficiency anemia is a global health concern, affecting around 2 billion people. Oral iron therapy often causes severe gastro-intestinal issues. , member of the Brassicaceae family, is valued in traditional medicine and renowned for its rich iron and vitamin C content.

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This study aims to investigate the physicochemical characteristics of the exopolysaccharides (EPS) extracted from the microalgae species sp., as well as to evaluate their antioxidant, antibacterial, and anti-apoptotic activities. The crude extracellular polysaccharides from the halophilic diatom sp.

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Porous materials play a crucial role in the extraction of trace analytes; yet, the attainment of high selectivity and efficient regeneration continues to pose a considerable problem. In this study, we employed a green method to synthesize porous carbon microspheres. These microspheres were subsequently functionalized with aminophosphonic acid to facilitate the extraction of heavy metal ions from real samples.

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A very simple and cost-effective silica-based hybrid stationary phase was synthesized for the separation of five synthetic peptides, five proteins, and benzene derivatives. Silica monolith was synthesized sol-gel process. Particles obtained through the grinding of silica monolith were suspended in methanol and sedimented under gravity to obtain sub-2 μm particles.

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In the current study, the potential interaction mechanisms between capmatinib (CAP), a selective tyrosine kinase inhibitor, and calf thymus double-stranded DNA (ds-DNA) were evaluated. In this research, we construct an amplified electrochemical platform based on a disposable pencil graphite electrode (PGE) modified with nanostructured CeO decorated carbon nanofiber ceramic film (CeNPs@CNF-CF) for monitoring CAP-dsDNA interaction at physiological pH. The morphology and structure of the obtained CeNPs@CNF nanocomposite were characterized.

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  • The study aimed to evaluate the validity of the Arabic translations of the Vanderbilt ADHD Diagnostic Scale (VADRS-A) through analyses involving parents and teachers in Saudi Arabia.
  • It included a sample of 1,812 participants, assessing children aged 5 to 12, with parents rating the Arabic Vanderbilt ADHD Diagnostic Parent Rating Scale (VADPRS-A) and teachers using the Arabic Vanderbilt ADHD Diagnostic Teacher Rating Scale (VADTRS-A).
  • Results showed a strong consistency and correlation among the factors of both scales, with high percentages of variance explained (59% for VADPRS-A and 69.20% for VADTRS-A), indicating their effectiveness in diagnosing ADHD.
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Given the critical role of carbonic anhydrase IX (CA IX) in various pathological conditions, there is a significant demand for new inhibitors to enhance patient outcomes and clinical management. In this study, we examined the inhibitory effectiveness of five coumarins derived from against CA IX using assays and computational modeling. Among the coumarins tested, xeroboside and isobaisseoside were identified as the most potent inhibitors.

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Uric acid is the end product of purine metabolism and is a key biomarker for various diseases. Under normal conditions, there is a balance between its production and excretion. Its higher concentration can cause inflammation and severe pain, which makes it necessary to monitor its level for the diagnosis, management, and treatment of various pathological conditions.

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The pursuit of efficient and sustainable energy storage solutions has fueled significant interest in the development of advanced materials for supercapacitors. Among these, two-dimensional (2D) materials undoubtingly have emerged as promising candidates due to their unique structural and electrochemical properties. To address the inherent challenges such as restacking, limited ion-accessibility, limited scalability, stability under operational conditions, and the intricate balance between surface area and conductivity that hinder the practical application of 2D materials, this article delves into innovative approaches and emerging strategies and prospects that aim to enhance their performance and durability.

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  • Temporomandibular disorders (TMD) significantly affect patients' quality of life, impacting their ability to engage in daily activities and causing both physical and mental distress, prompting a comprehensive review of oral health-related quality of life (OHRQoL) in TMD cases.
  • A systematic search of literature from 2013 to 2023 identified 15 relevant articles through rigorous criteria, with ten included in a meta-analysis; findings revealed consistently poor OHRQoL among TMD patients, showing high variation in results.
  • The study concluded that the overall OHRQoL is low for TMD patients compared to healthy individuals, indicating a significant impact of TMD on their quality of
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Research on energy storage devices has focused on improving asymmetric supercapacitors (ASCs) by utilizing two different electrode materials. In this work, we have successfully prepared a unique material, ZnO/SnO nanoflower, the hydrothermal method. Graphene oxide (GO) was synthesized by applying the modified Hummers' technique.

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Modern technological breakthroughs depend on nonlinear optical (NLO) and photovoltaic (PV) materials, essential for creating advanced photonic devices and efficient solar cells. Herein, the NLO, PV, electrical, and photophysical characteristics of proposed chromophores (WLK-1-WLK-6) designed from pyridoquinazolindone-containing triphenylamine have been systematically altered by the addition of different spacers categorized as K1, K2, K3, K4, K5, and K6 (named as i-series). This fine-tuning was accomplished using TD-DFT, DFT computations, and the Scharber model.

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  • The study aimed to evaluate the effectiveness of a polyherbal paste (PHP) mixed with honey on treating constipation in rats induced by the drug loperamide.
  • Thirty male rats were grouped and treated with different interventions, including PHP at low, medium, and high doses, while various health parameters were monitored over a week.
  • Results indicated that the highest dose of PHP significantly improved fecal water content, increased feces amount, enhanced gastrointestinal transit, and reduced intestinal damage, suggesting its potential as a treatment for drug-induced constipation.
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This work demonstrates the facile one step hydrothermal synthesis of carbon dots doped with nitrogen and sulfur (SCDs). The carbon dots have various uses, including their use as molecular payloads for antioxidant and drug delivery purposes. The sizes of the CDs were determined using transmission electron microscopy (TEM), which revealed an average size of 4.

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The oxidative desulfurization of dibenzothiophene in model and real fuel has been investigated by developing an environmentally sustainable catalyst HSiWO@f-kaolinite. The catalyst was synthesized by modifying kaolinite clay with (3-aminopropyl)triethoxysilane (f-kaolinite) followed by immobilizing silicotungstic acid hydrate (HSiWO) onto its surface. The successful synthesis of the catalyst was characterized by Fourier transform infrared spectroscopy, Raman spectroscopy, UV-visible spectroscopy, X-ray diffraction, energy-dispersive X-ray spectroscopy, and scanning electron microscopy.

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Objective: The objective of our study was to document the feasibility of a novel endoscopic anterior cricoid split and rib grafting technique in a goat airway model.

Study Design: Feasibility pilot animal study.

Setting: Animal surgical laboratory at a tertiary hospital and research center.

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Achieving high power conversion efficiency (PCE) remains a significant challenge in the advancement of organic solar cells (OSCs). In the field of organic photovoltaics (OPVs), considerable progress has been made in optimizing molecular structures to improve the PCE. However, innovative material design strategies specifically aimed at enhancing PCE are still needed.

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  • * New Schiff base derivatives of amlodipine were created to evaluate their potential for inhibiting urease and their antibacterial and antioxidant properties.
  • * Among the derivatives, 3g showed significant anti-hypertensive effects, while 3b, 3f, and 3g demonstrated the ability to inhibit urease, making them promising candidates for future research.
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  • This study investigates how UV irradiation affects the oxidation stability of oil and its phytochemical profile due to photo-oxidation.
  • Using GC-MS analysis, the research identified key fatty acid compounds, highlighting the predominant presence of alpha-linolenic acid (ALA), which is a type of omega-3 fatty acid, along with significant levels of phytosterols and tocopherols.
  • The results show that during 8 hours of UV exposure, there are notable increases in acidity and oxidation markers, but high levels of carotenoids and phenolic compounds help maintain the oil's quality, leading to little difference between irradiated and non-irradiated oil.
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Baby corn, characterized by its high water activity and elevated respiration rate, poses a formidable obstacle to prolonged storage under standard ambient conditions and necessitates specialized treatments for transportation to distant locations. One of the primary postharvest challenges associated with baby corn is the occurrence of brown pigment formation because of enzymatic browning at the apex of its immature ovules, cut surfaces, and silk attached to the young ears. The present study was undertaken to investigate the effect of different blanching treatments on peroxidase inactivation, physicochemical properties, and functional properties of baby corn.

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  • The text discusses the potential of bismuth iron oxide (BiFeO) as a multiferroic material for next-gen memory storage due to its unique magnetoelectric properties and high energy storage capabilities.
  • It highlights the limitations of BiFeO's weak magnetoelectric coupling and suggests enhancing its performance by combining it with other ferroelectric and magnetic materials through specific synthesis techniques.
  • Research findings reveal that certain compositions of BiFeO show significant improvements in ferroelectric efficiency and magnetic properties, positioning them as promising candidates for future multistate devices.
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Species groups, subgroups, and key to world species of the genus Trägårdh, 1915 (Acari, Prostigmata, Tetranychidae).

Zookeys

September 2024

Departamento de Entomologia e Acarologia, Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, São Paulo, Brazil Universidade de São Paulo São Paulo Brazil.

After a comprehensive taxonomic assessment of descriptions/ illustrations of all known (118) species of the spider mite genus Trägårdh (Acari: Prostigmata: Tetranychidae), five species groups are proposed based on the number of tactile setae on tibia II in female, i.e., with four setae (four spp.

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Age-associated decline of nuclear factor erythroid 2-related factor 2 (Nrf2) activity and DNA repair efficiency leads to the accumulation of DNA damage and increased risk of cancer. Understanding the mechanisms behind increased levels of damaged DNA is crucial for developing interventions to mitigate age-related cancer risk. Associated with various health benefits, (poly)phenols and their microbially mediated phenolic catabolites represent a potential means to reduce DNA damage.

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Zn(ii)-based anticancer drugs can be suitable alternatives to conventional Pt(ii)-based drugs because of the unique chemical properties of Zn(ii) and low toxicity. In this study, a new hexadentate and heteroleptic Zn(ii) complex ([Zn(bpy)(OAc)], 1) was prepared with a conventional ,-donor ligand (2,2'-bipyridine) and a leaving group (OAc) and characterized ESI-MS, UV-Vis, and FT-IR spectroscopy. Kinetic and mechanistic investigations of 1 were performed using two biologically relevant ligands (dl-penicillamine and l-cysteine) to understand its selectivity and reactivity.

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