Publications by authors named "Assiri Mohammed"

Background: The potential link between disease-modifying therapies (DMTs) and malignancy in multiple sclerosis (MS) patients has generated significant concern, particularly given the immunosuppressive nature of these treatments. Conflicting evidence in the literature has left this issue unresolved, underscoring the need for definitive research to inform clinical practice. This study addresses this gap by examining cancer occurrence among MS patients on DMTs treated at two tertiary-care centers in Saudi Arabia.

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  • Excessive fluoride use and chloroform exposure pose health risks, prompting the need for effective sensors to monitor these substances.
  • Researchers investigated etoricoxib (ECX) as a safe and available sensor, revealing its strong fluorescence response for detecting fluoride and chloroform at very low levels.
  • Advanced analyses, including UV-Vis and DFT studies, confirmed that ECX operates through non-covalent interactions, making it a promising tool for real-time detection of fluoride and moisture in various samples.
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Natural coumarins and isocoumarins show significant therapeutic potential against cancer in preclinical studies by targeting multiple pathways and processes. These compounds influence several critical cellular processes, such as apoptosis, autophagy, and cell cycle regulation, which are pivotal in cancer development and progression. Their capability to target multiple signalling pathways provides a strategic advantage over single-target therapies, which are often limited by drug resistance.

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A novel class of ethyl 2-aryl-3-ethoxy-5-methyl-3-oxido-2-thiazolo[2,3-][1,4,2]diazaphosphole-6-carboxylates (2a-j) were synthesized a one-pot, three-component method. This reaction utilized ethyl 2-amino-4-methylthiazole-5-carboxylate (1) with different aromatic aldehydes and ethyl dichlorophosphite in THF under ultrasonic irradiation, with triethylamine as an efficient catalyst at 50 °C. The reaction provided the desired products 2a-j in high yields within a short timeframe.

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In this study, UV/visible absorption maxima of organic compounds are predicted with the help of machine learning (ML). Four ML models are evaluated, the gradient boosting model has performed best. We also analyzed feature importance.

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Software malware detection and classification leverage sophisticated procedures and methods from the cybersecurity domain for identifying and categorizing malicious software, generally called malware. This procedure analyses code behaviour, file structures, and other features to distinguish between benign and malicious programs. Machine learning (ML) and artificial intelligence (AI) are vital in this domain, allowing the progress of dynamic and adaptive systems that identify novel and developing malware attacks.

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The design of novel polymer donors for organic solar cells has been a major research focus for decades, but discovering unique materials remains challenging due to the high cost of experimentation. In this study, machine learning models are employed to predict power conversion efficiency (PCE), Mordred descriptors are used for model training. Among the four machine learning models evaluated, the gradient boosting regressor emerged as the best-performing model.

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Background: Fasting-induced headaches (FIHs) have been shown to occur on the first day of Ramadan and clearly decline thereafter. Despite the wealth of knowledge about different types of headaches (e.g.

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  • The study examines the link between JAK2 mutations and unusual venous thrombosis in young individuals living at high altitudes in Saudi Arabia, highlighting the significant health risks associated with myeloproliferative neoplasms.
  • Data was collected from two hospitals over three years, revealing that out of 208 JAK2 tests, only 40 were related to thrombotic events, with a low incidence of JAK2 mutations (5% of participants).
  • The findings suggest that while JAK2 mutations may be relevant for certain types of thrombosis, their routine testing for other cases, especially when blood counts are normal, may not be justified, indicating a need for further research.
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The impact of Engineered nanomaterials (ENMs) (i.e., Zinc Oxide nanoparticles (ZnO NPs)) on human health has been investigated at high and unrealistic exposure levels, overlooking the potential indirect harm of subtoxic and long exposures.

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Inorganic arsenic (As), a known carcinogen and major contaminant in drinking water, affects over 140 million people globally, with levels exceeding the World Health Organization's (WHO) guidelines of 10 μg L. Developing innovative technologies for effluent handling and decontaminating polluted water is critical. This paper summarizes the fundamental characteristics of chitosan-embedded composites for As adsorption from water.

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Laser-induced graphene (LIG) and Laser-scribed graphene (LSG) are both advanced materials with significant potential in various applications, particularly in the field of sustainable sensors. The practical uses of LIG (LSG), which include gas detection, biological process monitoring, strain assessment, and environmental variable tracking, are thoroughly examined in this review paper. Its tunable characteristics distinguish LIG (LSG), which is developed from accurate laser beam modulation on polymeric substrates, and they are essential in advancing sensing technologies in many applications.

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Background: Fasting headaches frequently occur during the first few days of Ramadan, and treatment is challenging because of fasting.

Objective: This study aimed to evaluate the effect of extended-release paracetamol on preventing fasting headaches.

Methods: A randomized, open-label clinical trial investigated the efficacy of extended-release paracetamol at a daily dose of 1330 mg in preventing fasting headache.

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Electrocardiography (ECG) is the most non-invasive diagnostic tool for cardiovascular diseases (CVDs). Automatic analysis of ECG signals assists in accurately and rapidly detecting life-threatening arrhythmias like atrioventricular blockage, atrial fibrillation, ventricular tachycardia, etc. The ECG recognition models need to utilize algorithms to detect various kinds of waveforms in the ECG and identify complicated relationships over time.

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This study explores the synthesis and characterization of superabsorbent hydrogels derived from chemically modified gum Arabic, designed for controlled folic acid release. The synthesis involves a two-step process: carboxymethylation followed by grafting with 2-hydroxyethyl methacrylate via gamma irradiation. The resulting hydrogels exhibit enhanced mechanical strength and controlled diffusivity, essential for nutrient delivery systems.

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  • High concentrations of deferasirox (DFX) can lead to serious health issues in the liver, stomach, and kidneys, making it crucial to develop an effective detection method to safeguard public health.
  • Researchers created a thiourea-based probe called MPT that detects DFX by utilizing fluorescence quenching, a process where light emission decreases due to interaction with DFX.
  • Various analytical techniques, including H-NMR titration, dynamic light scattering, and electron microscopy, were used to confirm the interaction between MPT and DFX, demonstrating its ability to detect DFX in real samples like human plasma and artificial urine.
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Due to their distinctive security characteristics, all-solid-state batteries are seen as a potential technology for the upcoming era of energy storage. The flexibility of nanomaterials shows enormous potential for the advancement of all-solid-state batteries' exceptional power and energy storage capacities. These batteries might be applied in many areas such as large-scale energy storage for power grids, as well as in the creation of foldable and flexible electronics, and portable gadgets.

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Purpose: Diabetic kidney disease (DKD) is a serious complication of diabetes mellitus and a leading cause of chronic kidney disease and end-stage renal disease. One potential mechanism underlying cellular dysfunction contributing to kidney disease is aberrant protein post-translational modifications. Lysine acetylation is associated with cellular metabolic flux and is thought to be altered in patients with diabetes and dysfunctional renal metabolism.

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  • Polycythemia is common and often related to secondary conditions like high-altitude hypoxia, while a rare condition called polycythemia vera (PV) requires a specialized treatment approach.
  • In a study analyzing lab records over three years, out of 208 JAK2 tests, 136 were specifically for polycythemia evaluation, with 22 (16.7%) testing positive for the PV mutation.
  • The findings suggest that many patients at high altitude might be incorrectly evaluated for PV based solely on hemoglobin/hematocrit levels; a distinct CBC pattern in PV patients could help streamline evaluations and reduce unnecessary tests.
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Prussian blue and Prussian blue analogues have attracted increasing attention as versatile framework materials with a wide range of applications in catalysis, energy conversion and storage, and biomedical and environmental fields. In terms of energy storage and conversion, Prussian blue-based materials have emerged as suitable candidates of growing interest for the fabrication of batteries and supercapacitors. Their outstanding electrochemical features such as fast charge-discharge rates, high capacity and prolonged cycling life make them favorable for energy storage application.

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Green products such as plant tints are becoming more and more well-known worldwide due to their superior biological and ayurvedic properties. In this work, colorant from Amba Haldi (Curcuma aromatica) was isolated using microwave (MW), and bio-mordants were added to produce colorfast shades. Response surface methodology was used to develop a central composite design (CCD), which maximizes coloring variables statistically.

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  • Direct installation of chlorine into molecules via C-H bond activation is a significant challenge in organic synthesis, critical for improving drug development.
  • Chlorination enhances molecular properties like lipophilicity and polarity, making chlorinated compounds valuable in biological applications.
  • The manuscript emphasizes the methods for targeted C-H chlorination at various positions and highlights the role of directing groups and catalysts in achieving site selectivity.
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A simple synthetic method was performed to design a novel series of polycyclic systems consisting of carbazole-thiazolidinone-chromone hybrids 4a-e and carbazole-thiazolidinone-pyrazole hybrids 5a-e in excellent yields. The methodology depended on the one-pot four-component reaction of 3-amino-9-ethylcarbazole, substituted isothiocyanates, ethyl bromoacetate and 6-methyl-3-formylchromone in ethanol under ultrasound waves at 50 °C to give the carbazole-thiazolidinone-chromone hybrids 4a-e. The latter isolated products were treated with hydrazine hydrate in ethanol under ultrasound waves at 50 °C affording the corresponding carbazole-thiazolidinone-pyrazole hybrids 5a-e.

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The constraints associated with current cancer therapies have inspired scientists to develop advanced, precise, and safe drug delivery methods. These delivery systems boost treatment effectiveness, minimize harm to healthy cells, and combat cancer recurrence. To design advanced drug delivery vehicle with these character, in the present manuscript, we have designed a self-healing and injectable hybrid hydrogel through synergistically interacting metal organic framework, CuBTC with the poly(vinyl alcohol) (PVA).

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