Publications by authors named "Alharbi S"

This study examines the effect of rice husk ash (RHA) and nanosilica, and ground granular blast furnace slag (GGBS) on concrete mechanical and durability properties. The cement had been partially replaced with nanosilica and RHA having substitution percentages up to 6% and 10% respectively whereas the sand had been partially replaced by GGBS at 20% for all mixes. A water-to-cementitious materials ratio of 0.

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Article Synopsis
  • A study conducted at King Fahad Medical City in Riyadh, Saudi Arabia, analyzed 3,579 cases of multi-drug resistant (MDR) infections from 2019 to 2021, revealing key epidemiological and microbiological insights.
  • The findings indicated that MDR infections were more common in males and children, with respiratory samples being the primary source, while resistance to certain antibiotics like aztreonam and imipenem was noted.
  • The study highlighted a significant correlation between septic shock, liver disease, and mortality in ICU patients, underlining the urgent need for improved infection control and management strategies in the region.
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The IntFOLD server based at the University of Reading has been a leading method over the past decade in providing free access to accurate prediction of protein structures and functions. In a post-AlphaFold2 world, accurate models of tertiary structures are widely available for even more protein targets, so there has been a refocus in the prediction community towards the accurate modelling of protein-ligand interactions as well as modelling quaternary structure assemblies. In this paper, we describe the latest improvements to IntFOLD, which maintains its competitive structure prediction performance by including the latest deep learning methods while also integrating accurate model quality estimates and 3D models of protein-ligand interactions.

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Background: Adequate supply of health workforce with proper skills is essential to deliver appropriate health services in normal times and during disasters.

Objective: To describe the role of the Saudi Temporary Contracting and Visiting Doctors Program in the provision of critical care during COVID-19 pandemic, and in the clearance of the surgical backlog thereafter.

Methods: We reviewed reports of General Directorate of Health Services and Saudi Ministry of Health annual statistical books to obtain the following data: number of temporary healthcare professionals contracted from 2019 to 2022; number of intensive care unit beds before and during COVID-19 pandemic; volume of elective surgeries before, during and after COVID-19 pandemic.

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Eccrine poroma (EP) is a benign adnexal tumor that is derived from acrosyringium, the intraepidermal eccrine duct of sweat glands. The standard treatment for eccrine poroma is complete excision. However, this case report highlights cryotherapy as one of the modalities in treating eccrine poroma.

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Misdiagnosing suspected COVID-19 individuals could largely contribute to the viruses transmission, therefore, making an accurate diagnosis of infected subjects vital in minimizing and containing the disease. Although RT-PCR is the standard method in detecting COVID-19, it is associated with some limitations, including possible false negative results. Therefore, serological testing has been suggested as a complement assay to RT-PCR to support the diagnosis of acute infections.

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Ethnopharmacological Relevance: Artemisia sieberi Besser is a medicinal herb that has been traditionally used across the Middle East for the treatment of cancer. Further pharmacological studies on its extracts revealed that they possess cytotoxic activity against certain cancer cells, however, there were no studies conducted on the anticancer potential of Artemisia sieberi essential oil (ASEO).

Aim Of The Study: To evaluate the anticancer potential of ASEO, elucidate the oil's mode of action for the first time and investigate its chemical composition.

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Herein, we report a novel, accurate and cost-effective validated analytical method for the quantification of losartan potassium and its active metabolite, EXP 3174, in rabbit plasma by reversed-phase high-performance liquid chromatography. Valsartan was used as an internal standard. The method was validated as per International Conference on Harmonization guidelines.

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Article Synopsis
  • Diffuse capillary malformation with overgrowth (DCMO) is a rare condition involving capillary malformations and overgrowth of soft tissue, as demonstrated in a one-year-old boy with skin lesions present since birth.
  • The child exhibited widespread reticulated red patches on his skin, and noticeable size differences in the circumference of his legs, along with syndactyly (fused toes) on his right foot.
  • After ruling out other conditions, the child was diagnosed with DCMO and will be monitored by pediatric orthopedics for ongoing assessment of growth asymmetry.
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According to the World Health Organization and the Food and Agricultural Organization of the United Nations, T-2 is one of the most harmful food-toxic chemicals, penetrates intact skin. The current study examined the protective benefits of menthol topical treatment on T-2 toxin-induced cutaneous toxicity in mice. Lesions were observed on the skin of the T-2 toxin-treated groups at 72 and 120 h.

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Cobalt metal is considered as an essential trace element for the animals. Present investigation was undertaken in the peri-urban area to analyze the cobalt availability in animal food chain by using different indices. Cow, buffalo and sheep samples along with forage and soil samples were collected from the three different sites of District Jhang and analyzed through atomic absorption spectrophotometer.

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Although several ophthalmic manifestations of sickle cell disease (SCD) are common, orbital bone infarction is rare. Orbital bones have less bone marrow creating an unlikely place to develop infarction. However, having a patient with SCD presenting with periorbital swelling should warrant imaging to rule out bone infarction.

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Background Hypoglycemia has a major impact on patient health and glycemic management during insulin therapy for both type 1 (T1DM) and type 2 diabetes mellitus (T2DM). It is the rate-limiting complication in diabetes management that prevents stringent glucose control. Objectives To assess the knowledge and awareness about hypoglycemia as a complication of T2D in adults in Al Qassim, Saudi Arabia.

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Background:  Papillary thyroid carcinoma (PTC) is the most common type of thyroid cancer. Papillary thyroid microcarcinoma (PTMC) is a specific subgroup of PTC. Given their small size, PTMCs are often asymptomatic and behave benignly.

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Objectives: To investigate children's sleep problems, habits, and lifestyle changes.

Methods: A cross-sectional study was carried out in Riyadh, Saudi Arabia, over a period of 2 months, from August through September 2022, with parents of children aged 2-14 years after reviewing the literature and formulating a validated Google questionnaire containing 30 questions related to sleep habits, problems, and disorders.

Results: In total, 585 questionnaires were included in the analysis.

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Background: Temporary Contracting and Visiting Doctors' Program was initiated by the Saudi Ministry of Health to address issues of sustainable supply of healthcare professionals in the whole country and in remote areas in particular.

Objective: This study aimed to describe the experience of the Saudi Temporary Contracting and Visiting Doctors' Program, the undertaken reform steps and the program outputs.

Methods: We conducted a case study and reviewed documents of the Temporary Contracting and Visiting Doctors' Program to obtain data about the program's development and steps of reform.

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Organic monolithic columns are mainly used to separate macromolecules; however, many attempts to extend their performance toward small molecules were examined by incorporating micro- and nanoparticles. The incorporation technique enabled utilizing organic monoliths in gas chromatography (GC) for small molecules, which are still scarce. Here, we prepared a composite matrix of capillary monolithic columns of a zeolite-like metal-organic framework with a sodalite topology (sod-ZMOF) and Divinylbenzene polymer (DVB) for GC separations under 0.

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Allium sativum (A. sativum)is well known for its therapeutic and culinary uses. Because of their high medicinal properties, the clove extract was selected to synthesize cobalt-tellurium nanoparticles.

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Background: Human papillomavirus (HPV) is a common sexually transmitted infection globally. Investigating HPV awareness can reduce the burden of HPV-related cancers.

Aims: (1) Assessing HPV awareness and knowledge among health college students at King Saud University, (2) comparing these outcomes across sociodemographic characteristics.

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Global warming is accelerating glacial retreat and leaving open areas for vegetation succession on young developing soils. Soil microbial communities interact with plants affecting vegetation succession, but the specific microbial groups controlling these interactions are unclear. We tested whether plant-soil-microbial interactions explain plant primary succession in the Gongga Mountain glacial retreat chronosequence.

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: Patients undergoing liver transplantation (LT) often require increased blood product transfusion due to pre-existing coagulopathy and intraoperative fibrinolysis. Strategies to minimise intraoperative bleeding and subsequent blood product requirements include platelet transfusion and tranexamic acid (TXA). Prophylactic TXA administration has been shown to reduce bleeding and blood product requirements intraoperatively.

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In breast cancer (BC), STAT3 is hyperactivated. This study explored the design of imidazopyridine-tethered pyrazolines as a de novo drug strategy for inhibiting STAT3 phosphorylation in human BC cells. This involved the synthesis and characterization of two series of compounds namely, 1-(3-(2,6-dimethylimidazo [1,2-a]pyridin-3-yl)-5-(3-nitrophenyl)-4,5-dihydro-1H-pyrazol-1-yl)-2-(4-(substituted)piperazin-1-yl)ethanone and N-substituted-3-(2,6-dimethylimidazo[1,2-a]pyridin-3-yl)-5-(3-nitrophenyl)-4,5-dihydro-1H-pyrazoline-1-carbothioamides.

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Article Synopsis
  • - The study investigates the prevalence of vitamin D deficiency in Saudi patients with rheumatoid arthritis (RA) and its possible connection to disease activity, finding a significant number of patients with low vitamin D levels.
  • - Conducted in a rheumatology clinic, the research included 103 RA patients, revealing that 42.7% had insufficient, 22.3% had deficient, and 15.5% had severe vitamin D deficiency, particularly correlating with increased disease activity markers.
  • - The findings suggest that low vitamin D levels are common among RA patients in Saudi Arabia and highlight the importance of monitoring vitamin D and considering supplements to potentially improve disease management and outcomes.
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The Silk sericin protein was conjugated with magnesium oxide (MgO) nanoparticles to form SS-MgO-NPs . UV, XRD, FTIR, SEM, DLS, and EDX were used to confirm the formation of SS-MgO-NPs. The absorption band of SS-MgO-NPs using UV-visible spectra was observed at 310 nm, with an average size of the nanoparticles was 65-88 nm analyzed from DLS.

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Purpose: The aim of this study was to report the detailed ophthalmic findings in a young patient with genetically confirmed arterial tortuosity syndrome (ATS) and the findings in 8 family members who were carriers.

Methods: Nine members of the same Saudi family were assessed at King Khaled Eye Specialist Hospital in Riyadh, Saudi Arabia, for ATS-related ocular changes after homozygosity for the pathogenic variant of SLC2A10 gene was confirmed in 1 member. All family members underwent complete ophthalmic examination, genetic testing, and corneal tomography at presentation and at 6-month follow-up.

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