Publications by authors named "Aljohani A"

Objectives: To investigate the phytochemical composition of Ajwa date extract and evaluate its antiviral activity and mechanism of action.

Methods: High perfomance liquid chromatography, gas chromatography-mass spectrometry, and liquid chromatography-mass spectrometry were used to analyze the phytochemical profile of Ajwa date extract. The antiviral activity was assessed using the MTT colorimetric assay against herpes simplex virus type I (HSV-I) and coxsackievirus B4 (CVB-4).

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Objectives: To evaluate the impact of UCCs on reducing non-urgent Emergency Department (ED) visits and improving patient flow, focusing on metrics such as door-to-doctor time, doctor-to-decision time, and overall patient disposition.

Methods: This observational cohort pre-post study analyzed data from 198,050 ED visits to King Fahad Hospital, Al Madina Al Munawara between June 2021 and May 2023 and compared visit patterns before and after UCC implementation.

Results: Post-UCC implementation, the average door-to-doctor time decreased but was not statistically significant.

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: Invasive breast cancer (BC) was traditionally investigated visually, and no technique could identify the key molecular drivers of patient survival. However, essential molecular drivers of invasive BC have now been discovered using innovative genomic, transcriptomic, and proteomic methodologies. Nevertheless, few evaluations of the prognostic factors of BC in Saudi Arabia have been performed.

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Background: Spontaneous pneumomediastinum (SPM) and subcutaneous emphysema (SE) are rare, severe, and potentially life-threatening complications associated with asthma exacerbation. Most of these conditions are benign and self-limiting. However, the overlapping symptoms between asthma exacerbation and pneumomediastinum (PM) may delay diagnosis.

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Early childhood caries (ECC), one of the most common health problems among children aged six years and below, is considered present when one or more surfaces of a tooth are decayed, missing, or filled. Not only does ECC cause pain for a long time, but it also has short- and long-term health consequences in children. In order to treat ECC, holistic management that includes preventive, restorative, and prosthetic intervention is necessary.

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Background: Multiple sclerosis (MS) is considered the most prevalent neurological disorder in young adults with many patients manifesting sleep-related disorders (SRD) due to its pathomechanisms. This is subsequently reflected in patients' quality of life and physical activities.

Material And Methods: This is a cross-sectional study at a tertiary care center.

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Antimicrobial resistance in methicillin-resistant (MRSA) is a major global health challenge. This study reports the design and synthesis of novel phenyltriazole derivatives as potential anti-MRSA agents. The new scaffold replaces the thiazole core with a 1,2,3-triazole ring, enhancing antimicrobial efficacy and physicochemical properties.

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Background The escalating global prevalence of obesity raises concerns about its implications for health outcomes. While obesity is acknowledged as a major risk factor for various diseases, its impact on appendicitis and appendectomy outcomes remains less explored. Methods Data on overweight and obese adults aged 18 to 65 treated for appendicitis in King Abdulaziz Medical City in Riyadh, Saudi Arabia were collected retrospectively.

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Aim: Benzimidazole-triazole conjugates are very active hotspot for design and synthesis of promising anticancer agents. The target analogs showed potent and selective cytotoxicity over different cancer cell lines for breast and lung ones.

Materials & Methods: A new series of bis-1,4-disubstituted-1,2,3-triazoles moieties conjugated with a 2-mercapto-benzimidazole 4a-h and 7a-g was synthesized via the click cycloaddition (CuAAC) reaction.

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Odontomas are the most prevalent odontogenic tumors, often classified as hamartomas due to their slow growth and non-aggressive nature. Typically asymptomatic, they can obstruct the eruption of adjacent teeth. While the exact causes of odontomas remain unclear, potential factors include local trauma, infection, growth pressure, and hereditary influences.

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Two two-element slotted patch multiple-input multiple-output (MIMO) antenna with coplanar waveguide (CPW) feed is proposed for deployment in implantable medical devices. Implantable devices are compact and demand high-gain antennae with unidirectional radiation patterns. Regarding compactness, the antenna has a size of 16 × 6×0.

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Background: The use of electronic nicotine delivery systems (ENDS), including e-cigarettes, vape pens, hookah pens, e-cigars, and e-pipes, has grown in popularity worldwide, particularly among young individuals. However, these products are not without risks, as their emissions may contain harmful substances such as diacetyl (a flavoring agent linked to specific pulmonary problems in high concentrations), tobacco-specific nitrosamines, and volatile organic compounds with unknown long-term effects on lung health.

Objective: This systematic review and meta-analysis aimed to assess the prevalence of ENDS use among school and college students on a global scale.

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Cancer, characterized as one of the leading causes of death owing to its heterogeneity and complexity, hence poses a significant challenge to health care system across the globe. Current therapies for cancer curtailment are considered to have associated side effects, therefore discovery of novel alternative approaches is need of the time. In this context, natural products have attained an essential spot in the scientific community for the development of novel cancer treatments.

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Background: Thalassemia is a group of genetic disorders that result in a lack of hemoglobin (Hb) production. Children with thalassemia rely on regular blood transfusions for survival, which places a significant burden on their families and negatively impacts their quality of life (QOL).

Objective: This study aimed to assess QOL from the perspective of parents of thalassemic children in Medina City, Saudi Arabia.

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This study aims to review the subsisting literature on the relationship between menopause and urinary incontinence (UI). To locate research that met the inclusion criteria, a thorough computerized search of relevant databases was carried out. A comprehensive search was carried out on PubMed, SCOPUS, Science Direct, Cochrane Library, and Web of Science to locate relevant material.

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Article Synopsis
  • This research explores how variable viscosity, activation energy, and microgravity affect the performance of Darcy nanofluid in improving thermal energy storage (TES) via solar collectors.
  • The study emphasizes that using nanofluid can enhance heat and mass transfer in TES applications, which include heat exchangers and solar power systems, especially when combined with solar radiation and phase change materials.
  • A mathematical model is developed to simulate oscillating heat transfer in TES, revealing that lower viscosity increases fluid velocity while higher activation energy and microgravity lead to better thermal and mass transfer efficiencies.
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Background: Researching medical sample storage is crucial for maintaining the integrity of biological specimens and ensuring the accuracy of research investigations and diagnostic tests. Improper storage conditions can lead to sample degradation, compromising the reliability of results. Standardized storage procedures are essential for quality control, particularly in multicenter trials where samples are collected and processed at various locations.

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The genus has gained significant attention in the scientific community owing to its diverse bioactivities ascribed to specific bioactive constituents present in different species of this plant. Phytochemicals like flavonoids, terpenoids, and xanthones have been reported to be present in other species responsible for their pharmacological properties. These compounds are well known for their diverse potent therapeutic potentials, such as antimicrobial, antioxidant, anti-inflammatory, and anticancer properties.

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This study aimed to investigate the effect of zinc phosphate (ZnP) cement, glass ionomer cement (GIC), and nano-integrated bio-ceramic (NIB) cement on mineralization when placed in contact with bone tissue-forming cells. ZnP cement, GIC, and NIB cement were divided into direct and indirect groups. A total of 72 cement pellets (24 pellets of each test sample) of 3 × 1 mm (width × height) were prepared using polytetrafluoroethylene molds.

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Article Synopsis
  • This study examines how hybrid nanofluids behave thermally when flowing over an infinite vertical plate, focusing on factors like magnetohydrodynamics and radiation.
  • The research uses the Dufort-Frankel method to solve equations and compares the effectiveness of water, magnetic oxide, and multi-walled carbon nanotubes as working fluids, illustrating their effects on velocity, temperature, and concentration through various plots and tables.
  • Key findings show that while temperature increases with radiation, both velocity and concentration drop with higher magnetohydrodynamic values, with multi-walled carbon nanotubes having a significant impact on temperature, indicating their potential in enhancing thermal performance across various engineering applications.
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The paper introduces a new class of convexity named strongly modified (p, h)-convex functions and establishes various properties of these functions, providing a comprehensive understanding of their behavior and characteristics. Additionally, the paper investigates Schur inequality and Hermite-Hadamard (H-H) inequalities for this new class of convexity. Also, H-H inequalities are proved within context of Riemann-Liouville integrals and Caputo Fractional derivatives.

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Article Synopsis
  • * Common local effects included pain, swelling, and redness at the injection site, while systemic effects like fever and headache were prevalent within 48 hours post-vaccination; Oxford-AstraZeneca was linked to higher rates of thrombosis.
  • * Females and older adults with preexisting conditions faced greater risks of severe and long-term effects, with Pfizer-BioNTech showing the highest odds of adverse outcomes among the vaccines studied.
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