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

The large amounts of attention directed towards the commercialization of renewable energy systems have motivated extensive research to develop non-precious-metal-based catalysts for promoting the electrochemical production of H and O from water. Here, we report promising technology, , electrochemical water splitting for OER and HER. This work used a simple hydrothermal method to synthesize a novel CoTe-FeC nanocomposite directly on a stainless-steel substrate.

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Resource partitioning is crucial for the coexistence of colonial herons, as it allows multiple species to share the same habitat while minimising competition. This study took advantage of a natural experiment in 2006 and 2007 when Black-crowned Night Herons were prevented from breeding at Lake Fetzara in the first year due to the presence of a feral cat. This event provided valuable insight into the spatial and temporal dynamics of nest site selection among coexisting heron species, which consisted of Cattle Egrets (), Little Egrets () and Squacco Herons ().

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Aim: Autosomal recessive primary hyperoxalurias (PH) are genetic disorders characterised by elevated oxalate production. Mutations in genes involved in glycoxylate metabolism are the underlying cause of PH. Type 1 PH (PH1) results in malfunctioning of alanine-glyoxylate aminotransferase enzymes of liver due to a change in the genetic sequence of alanine-glyoxylate aminotransferase (AGXT) gene.

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Background: Classic homocystinuria (HCU) is a rare inborn metabolic disease that is generally asymptomatic at birth. If untreated, it can cause a wide range of complications including intellectual disability, lens dislocation, and thromboembolism. This study aimed to describe the natural history and the molecular findings of patients with HCU, and to assess the importance of early diagnosis.

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Article Synopsis
  • Hyperlipidemia is linked to poor diet and inactivity, but prebiotics and probiotics, like those found in mushrooms and kefir milk, could help address its effects.
  • A study tested dried powdered mushrooms (DPM) and kefir milk (KM) on hyperlipidemic rats, showing significant improvements in health markers such as body weight, blood glucose, and lipid profiles when DPM and KM were included in their diet.
  • The findings suggest that the combination of DPM and KM could serve as functional foods to reduce hyperlipidemia and enhance gut health, but further research on humans is necessary.
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Evaluation of of the family Boraginaceae during previous investigations determined numerous therapeutic potentials against inflammatory-related diseases. The present study evaluates the phytochemical, acute toxicity, and hepatoprotective effects of methanolic extracts of (MEAL) against thioacetamide (TAA)-induced liver injury in rats. The phytochemical profiling of MEAL followed a Folin-Ciocalteu and 10% AlCl3 procedure using a spectrophotometer.

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Advance glycation end products (AGEs) are the main reason for diabetic complications. Persistent hyperglycemia and non-enzymatic glycation increase the rate of AGEs formation. Natural functional food-based approaches are mainly under investigation these days to discover new treatment options.

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The synthesis of polymer/oligomer-stabilized metal nanostructures (MNS) opens up a wide range of possibilities, from fundamental materials science to practical applications in domains such as medicine, catalysis, sensing, and energy. Because of the versatility of this synthetic approach, it is a dynamic and ever-changing field of study. These polymers/oligomers have precise control over the nucleation and growth kinetics, allowing the production of mono-disperse MNS with well-defined properties.

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The current study was designed to investigate the effect of A. indica (Neem) leaf extracts (ethanolic and aqueous) in yeast-induced pyrexia and acetic acid-induced writhing in rat models to evaluate the antipyretic and analgesic biomarkers and its phytochemical screening with computational analysis. For the antipyretic activity model 60 albino rats (160-200g) of either sex were divided into 4 groups and all groups were injected with yeast to induce pyrexia.

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The mechanical, thermal and dynamical stabilities, electronic structure, contact type, and height of the barrier at the interface of TaX (X = S, Se, Te) and BY (Y = P, As, Sb) metal-semiconductor (MS) contact are investigated first principles calculations. Binding energies, mechanical properties, phonon spectra and molecular dynamics (AIMD) simulations confirm the stabilities of these systems. TaX-BY (X = S, Se, Te; Y = P, As, Sb) MS van der Waals heterostructures (vdWHs) are found to be metal with a Schottky contact at the interface.

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Hepatocellular carcinoma (HCC) is the third most common cause of cancer death and disability in the world. Citrus species and their constituents have many biological activities including antioxidant, anti-inflammatory and anti-carcinogenic properties. This study aimed to assess the anti-carcinogenic effects and postulate the possible mechanisms of action for Citrus limon fruit peel hydroethanolic extract (CLFPHE) and limonene in diethylnitrosamine (DEN)/2-acetylaminofluorene (2AAF)-induced HCC in male Wistar rats.

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3,4-Dihydropyrimidin-2(1)-ones (DHPMs) and 1,4-dihydropyridines (DHPs), prepared by applying the Biginelli and Hantzsch reaction protocols, respectively, are well-documented nitrogen-containing heterocycles with intriguing pharmacological properties. The aqueous solution of biogenic carboxylic acids renewably produced from biomass catalytic or enzymatic processes can be used as a sustainable catalyst and green reaction media for synthesizing DHPs and DHPMs. This work evaluates the efficacy of various biogenic acids in their aqueous solutions as catalysts for synthesizing DHPs and DHPMs from substituted benzaldehydes.

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The literature does not adequately examine the relationship between cardiovascular disease (CVD) and risk in handgrip strength (HGS) among community-dwelling older adults in India. The study aimed to investigate this relationship, considering sociodemographic, lifestyle, and clinical variables. A cross-sectional study involving 31,001 individuals aged ≥60 assessed HGS in kilograms using a handheld Smedley Hand Dynamometer and self-reported CVD status.

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A novel series of 1,2,3-triazole/quinazoline-4-one hybrids (8a-t) were designed and synthesized as dual-targeted antiproliferative agents. Compounds 8a-t were evaluated for their antiproliferative efficacy against a panel of four cancer cell lines. The results indicated that most of the evaluated compounds exhibited strong antiproliferative activity, with 8f, 8g, 8h, 8j, and 8l demonstrating the highest potency.

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Enhancing critical care practitioners' knowledge and adherence to ventilator-associated events bundle: a comprehensive analysis.

Front Med (Lausanne)

November 2024

Department of Health Administration, College of Business Administration, King Saud University Riyadh, Riyadh, Saudi Arabia.

Objectives: Few surveys have focused on ventilator-associated pneumonia occurring in critically ill patients undergoing intubation and mechanical ventilation. Limited knowledge among healthcare workers may impede compliance with evidence-based guidelines for preventing ventilator-associated pneumonia. We evaluate the knowledge of intensive care professionals related to preventing ventilator-associated pneumonia in the intensive care units.

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Sauerkraut-derived lactic acid bacterial (LAB) strains have gained attention due to their potential health benefits. This study focuses on evaluating seven Sauerkraut-derived RAMULAB strains isolated from sauerkraut, aiming to identify promising candidates for modulating α-glucosidase (AG) and α-amylase (AM) enzymatic functions. RAMULAB strains with remarkable probiotic potential can contribute to the digestive health and manage conditions like diabetes.

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The population structure and breeding biology of a Xanthid crab, Randall, 1840, a commonly occurring species on the rocky intertidal region of Saurashtra coast of Gujarat State, India, were investigated. Samples were collected from the intertidal region for 12 consecutive months during low tide using catch per unit effort in a 500 m area. The individuals were categorized into male, non-ovigerous female, or ovigerous female.

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Unveiling two new species of (Hypocreales, Hypocreaceae) that cause green mold disease on from Guizhou Province, China.

MycoKeys

November 2024

Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun 130118, China Guizhou University Guiyang China.

Article Synopsis
  • Green mold disease is a significant concern for the production of an important edible mushroom in China, leading to economic losses.
  • Two new fungal pathogens were identified as responsible for this disease through analyses of certain genetic markers.
  • Pathogenicity tests confirmed the ability of these pathogens to cause symptoms similar to those seen in infected mushrooms, supporting their identification as the causal agents.
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(Microthyriaceae, Microthyriales), a new lignicolous freshwater fungi from a plateau lake in Yunnan Province, China.

Biodivers Data J

November 2024

Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, Thailand Center of Excellence in Fungal Research, Mae Fah Luang University Chiang Rai Thailand.

Background: Based on unique morphological features and phylogenetic analysis of combined LSU and ITS sequences, is established as the third species in , along with and . All three species of were reported from freshwater habitats in China.

New Information: sp.

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The development of low-cost, eco-friendly, and earth-friendly electrode materials for energy storage and conversion applications is a highly desirable but challenging task for strengthening the existing renewable energy systems. As part of this study, orange peel extract was utilized to synthesize a magnesium oxide-silicon dioxide hybrid substrate system (MgO-SiO) for coating cobalt oxide nanostructures (CoO) hydrothermal methods. A variety of MgO-SiO compositions were used to produce CoO nanostructures.

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Cochlear nerve visualization in Normal anatomy and inner ear malformations.

Laryngoscope Investig Otolaryngol

December 2024

MED-EL Medical Electronics GmbH Innsbruck Austria.

Objectives: This study aimed to qualitatively evaluate the variations in nerve bundles between patients with normal anatomy and those with inner-ear anomalies.

Methods: Magnetic resonance imaging (MRI) scans of the temporal bones of candidates for cochlear implants (CIs) enrolled at a tertiary center were retrospectively reviewed from the clinical database. The 3.

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Nanocomposites (NCs) have attractive potential applications in gas-sensing, energy, photocatalysis, and biomedicine. In the present work, the fabrication of CuO/ZrO/TiO/RGO nanocomposites (NCs) was done a simple chemical route. Our aim in this work was to synthesis and investigate the selective anticancer activity of TiO NPs by supporting CuO, ZrO, and RGO toward cancer and normal cells.

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The development of flexible, cost-effective, highly efficient, and reliable humidity monitoring sensors is in high demand owing to their wide-range of applications in industrial domains. In this study, a humidity sensor was fabricated based on graphite/zinc oxide nanoparticle (G/ZnO-NP)-coated cellulose paper. A bar device was designed using computer software, and its sketch was printed on cellulose paper, with graphite bars then added using the pencil-drawing method, and then ZnO-NP paste was coated on the graphite patterns.

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The development of novel and efficient tyrosinase inhibitors is a critical necessity of agricultural, cosmetic and medicinal chemistry. Bearing in mind the therapeutical potential of naphthofuran-containing organic compounds, we carried out the CTAB-catalyzed ultrasound-assisted synthesis of a library of novel naphthofuran-triazole joined -aryl/alkyl acetamides 20(a-j) in 74-92% yield, which were further assessed for their tyrosinase inhibitory potential by taking kojic acid and ascorbic acid as standard inhibitors. The tyrosinase inhibitory assay demonstrated the promising tyrosinase inhibiting tendency of all prepared derivatives 20(a-h) as they all were found to be more efficient in comparison to the standard kojic acid.

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Hyperosmolar hyperglycemic syndrome (HHS) is a common complication of diabetes mellitus. The episodes of HHS have been reported in patients with no prior history of diabetes. However, these incidents have rarely been reported in the literature.

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