Publications by authors named "Mohammed O"

Understanding how structural modifications affect the photophysics of organic linkers is crucial for their integration into metal-organic frameworks (MOFs) for light-driven applications. This study explores the impact of varying the amine functional group position on two terephthalic acid derivatives─linker and linker ─by investigating their photophysics through a combination of steady-state and ultrafast laser spectroscopy and time-dependent density functional theory (TD-DFT) calculations. With tetrahydrofuran as the solvent, time-correlated single-photon counting revealed a 2-fold increase in the S excited-state lifetime of the molecule with the amine group at the meta position compared with that of the molecule with the amine group at the ortho position.

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Background: The increased occurrence of malaria among Africa's displaced communities poses a new humanitarian problem. Understanding malaria epidemiology among the displaced population in African refugee camps is a vital step for implementing effective malaria control and elimination measures. As a result, this study aimed to generate comprehensive and conclusive data from diverse investigations undertaken in Africa.

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The rapid evolution of nanotechnology has catalyzed significant advancements in the design and application of nano-sensors, particularly within the food industry, where ensuring safety and quality is of paramount concern. This review explores the multifaceted role of nano-sensors constructed from diverse nanomaterials in detecting foodborne pathogens and toxins, offering a comprehensive analysis of their operational principles, sensitivity, and specificity. Nano-sensors leverage unique physical and chemical properties at the nanoscale to enhance the detection of microbial contamination, actively contributing to food safety protocols.

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Mycobacterium tuberculosis (Mtb) complex, responsible for tuberculosis (TB) infection, continues to be a predominant global cause of mortality due to intricate host-pathogen interactions that affect disease progression. MicroRNAs (miRNAs), essential posttranscriptional regulators, have become pivotal modulators of these relationships. Recent findings indicate that miRNAs actively regulate immunological responses to Mtb complex by modulating autophagy, apoptosis, and immune cell activities.

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Background: Salmonella and Shigella are major enteric pathogens that cause diarrhea in children worldwide. They are pathogenic microbes that cause significant diarrheal morbidity and mortality in under five children in resource limited countries. Thus, this systemic review and meta-analysis aimed to investigate the prevalence of Salmonella and Shigella species and their multidrug resistance patterns in pediatric populations in Ethiopia.

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Background: Coronary artery bypass graft (CABG) is a common intervention for managing coronary artery disease, which is often accompanied by postoperative psychological challenges such as anxiety and depression. This systematic review aims to evaluate the benefits of cognitive behavioral therapy (CBT) in reducing anxiety and depression symptoms and improving overall health outcomes in patients' post-coronary artery bypass graft (CABG) surgery.

Methods: A search of Science Direct, PsycINFO, PubMed, Google Scholar, VHL, Cochrane, and Scopus databases was conducted until October 2023.

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The prevalence of spp. infecting sheep and goats were investigated in two cities and surroundings in northwest Saudi Arabia. Blood samples from 403 sheep and goats from Madina ( = 201) and Tabuk ( = 202) cities (177 from sheep and 226 from goats) were investigated.

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Acute appendicitis is one of the most common surgical emergencies. Simple appendicitis can be a complicated periappendiceal abscess. Despite the fact that there are several treatment options for periappendiceal abscesses, there is no consensus on the optimal treatment method; some surgeons prefer appendectomy, while others prefer relying on non-operative approaches using antibiotic therapy with or without percutaneous drainage.

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Precise material design and surface engineering play a crucial role in enhancing the performance of optoelectronic devices. These efforts are undertaken to particularly control the optoelectronic properties and regulate charge carrier dynamics at the surface and interface. In this study, we used ultrafast scanning electron microscopy (USEM), which is a powerful and highly sensitive surface tool that provides unique information about the photoactive charge dynamics of material surfaces selectively and spontaneously in real time and space in high spatial and temporal resolution.

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Smart innovative nanocomposites based on active ingredients and metallic nanoparticles with effective wound healing and antifungal properties are efficient in overcoming the limitations of traditional therapeutic products. Open wounds provide an ideal niche for colonization by () which poses substantial global health issues owing to delayed wound healing and disordered healing mechanisms. Therefore, proficient innovative therapies that control infection and promote wound healing are of imperative importance for the management of wounds and prevention of infection and possible complications.

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X-ray detection technology is essential in various fields, including medical imaging and security checks. However, exposure to large doses of X-rays poses considerable health risks. Therefore, it is crucial to reduce the radiation dosage without compromising detection efficiency.

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Article Synopsis
  • A new reducing agent based on hydrosilanes (Si-H) allows for synthesis of high-quality, monodisperse InAs CQDs with tunable excitonic peaks, avoiding harmful compounds that cause surface oxidation.
  • These CQDs exhibit excellent optoelectronic properties, leading to photodetectors with low dark current, good quantum efficiency, and fast photoresponse times, while eliminating a major barrier related to (TMS)As usage
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Article Synopsis
  • Despite advancements in targeted therapies, breast cancer remains a serious health risk for women, highlighting the need for ongoing research.
  • The rise of transcriptomics through high-throughput sequencing has shed light on the important roles of non-coding RNAs, especially long non-coding RNAs (lncRNAs), in disease development, including cancer.
  • The review focuses on recent findings about lncRNAs in breast cancer, particularly their involvement in key pathways like PI3K, MAPK, NF-kB, and hypoxia, along with their mechanisms of resistance in cancer biology.
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Stresses within the tumour microenvironment can mediate post-translational modifications of self-proteins. Homocitrullination is the conversion of lysine to homocitrulline which generates neoepitopes and bypasses self-tolerance. In this study a vaccine targeting homocitrullinated antigens was assessed for stimulation of anti-tumour immunity.

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Glioblastoma (GBM) is one of the most aggressive types of brain cancer, characterized by its poor prognosis and low survival rate despite current treatment modalities. Because GBM is lethal, clarifying the pathogenesis's underlying mechanisms is important, which are still poorly understood. Recent discoveries in the fields of molecular genetics and cancer biology have demonstrated the critical role that non-coding RNAs (ncRNAs), especially long non-coding RNAs (lncRNAs), play in the molecular pathophysiology of GBM growth.

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This research examined the effectiveness and feasibility of utilizing ultraviolet (UV) assisted photo-catalysis to treat wastewater effluents from textile production containing reactive blue 250 (RB 250) dye. Molecular oxygen and active species like O , HO , HO and OH play crucial roles in the degradation process. Additionally, the degradation of dyes is influenced by several factors, including dye concentration, duration of UV irradiation, pH levels, concentration of HO, and the catalyst.

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Gouty arthritis is a prevalent inflammatory illness. Gout attacks begin when there is an imbalance in the body's uric acid metabolism, which leads to urate buildup and the development of the ailment. A family of conserved, short non-coding RNAs known as microRNAs (miRNAs) can regulate post-transcriptional protein synthesis by attaching to the 3' untranslated region (UTR) of messenger RNA (mRNA).

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Introduction: Hypertension and dyslipidemia are common contributors to cardiovascular disease (CVD), often occurring together. Effectively Managing both is key to reducing mortality and morbidity, but complex regimens reduce adherence.

Aim: This study investigated the comparative efficacy and safety of a three-drug regimen (TAR) containing telmisartan, amlodipine, and rosuvastatin against two-drug combinations (TA and TR) for managing hypertension and dyslipidemia.

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Cutting-edge techniques utilizing continuous films made from pure, novel semiconductive materials offer promising pathways to achieve high performance and cost-effectiveness for X-ray detection. Semiconductive metal-organic framework (MOF) glass films are known for their remarkably smooth surface morphology, straightforward synthesis, and capability for large-area fabrication, presenting a new direction for high-performance X-ray detectors. Here, a novel material centered on MOF glasses for highly uniform glass film fabrication customized for X-ray detection is introduced.

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Introduction: Coccidiosis is a serious parasitic disease in camels caused by an intestinal protozoan parasite of the genus , which is linked to significant causes of reduced milk and meat production. In Saudi Arabia, scare literature focused on the coprological investigation of dromedary camels (). To determine the taxonomic status of camel parasite species, we performed morphological characterization of oocysts and genetic analysis ( and gene regions) of species collected from camels in Riyadh, Saudi Arabia.

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Infertility is a multifactorial reproductive system disorder, and most infertility cases occur in men. Semen testing is now thought to be the most important diagnostic test for infertile men; nonetheless, because of its limitations, the cause of infertility remains unknown for 40% of infertile men. Semen assessment's shortcomings indicate the need for improved and innovative diagnostic techniques and biomarkers worldwide.

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Breast cancer's complexity and heterogeneity continue to present significant challenges in its treatment and management. Emerging research has underscored the pivotal role of microRNAs (miRNAs) in breast cancer pathogenesis, acting as crucial regulators of gene expression. This review delivers an in-depth analysis of miRNAs, highlighting their dual functions as both oncogenes and tumor suppressors, and detailing their impact on key biological processes, including cell proliferation, apoptosis, and metastasis.

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Article Synopsis
  • Leprosy is a significant public health issue in Ethiopia, causing social stigma and poor quality of life, emphasizing the need for collaborative actions to address its impact in endemic regions.
  • A cross-sectional study involving 256 leprosy-suspected cases was conducted to assess the acid-fast positivity rate and identify factors contributing to the disease, using interviews and laboratory testing.
  • The study found a 19.6% positivity rate for leprosy, with significant contributing factors including being male, living in rural areas, poor diet, inadequate hygiene, and co-infections.
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