Publications by authors named "Mohamed AbdElRahman"

BRCA1-associated protein 1 (BAP1) is a tumor suppressor gene that was first identified in 1998. Germline loss-of-function variants in BAP1 are associated with a tumor predisposition syndrome with at least four cancers: uveal melanoma (UM), malignant mesothelioma (MMe), renal cell carcinoma (RCC), and cutaneous melanoma (CM). Furthermore, somatic BAP1 mutations are important drivers for several cancers most notably UM, MMe, RCC, intrahepatic cholangiocarcinoma (ICC) and hepatocellular carcinoma (HCC).

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Colostrum, the initial mammary secretion produced by various mammals following birth, is a conduit for maternal immunity transfer in diverse mammalian species. Concurrently, many cellular processes are occurring in the neonatal small intestine to prepare it to receive molecular signals from a superfood essential for the neonate's health and development. During the prepartum colostrum secretion, the newborn intestine undergoes transient alterations in the intestinal barrier, primarily regulating immunoglobulin absorption.

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Oleaginous yeasts are considered promising sources for lipid production due to their ability to accumulate high levels of lipids under appropriate growth conditions. The current study aimed to isolate and identify oleaginous yeasts having superior ability to accumulate high quantities of lipids; and enhancing lipid production using response surface methodology and repeated-batch fermentation. Results revealed that, twenty marine oleaginous yeasts were isolated, and the most potent lipid producer isolate was Candida parapsilosis Y19 according to qualitative screening test using Nile-red dye.

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This study examined the phytochemical profile and biomedical activities of , a halophytic and drought-resistant shrub. HPLC analysis showed gallic acid (1905.1 μg/g), catechin (1984.

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Background: This study aimed to assess the histological and radiographic effects of sodium hexametaphosphate (SHMP) as a direct pulp capping (DPC) agent in immature permanent dog premolars.

Methods: A split-mouth design was employed with three healthy 4-month-old Mongrel dogs, each having 36 premolars. The premolars were randomly assigned to either SHMP or MTA.

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Article Synopsis
  • Understanding the role of Yes-associated protein 1 (YAP1) is essential for improving milk production in mammals, as it impacts mammary epithelial cell function during both pregnancy and lactation.
  • YAP1 is highly expressed in the mammary glands of various species, especially in the alveoli during gestation and lactation, and its inhibition negatively affects milk yield and mammary gland structure in mice.
  • Through its regulation of cellular processes, YAP1 interacts with hormones like Prolactin to enhance cell growth and milk components, while being inhibited by Melatonin, highlighting its critical role in lactation.
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The reproductive technology has a significant impact on the development of livestock production. The thyme oil, rich in phytoestrogen chemicals like apigenin, has been found to enhance reproductive performance by mimicking estrogen's action. This study aimed to investigate the effects of oral supplementation with thyme essential oil on the reproductive organ biometry, and reproductive performance in adult and prepubertal Barki ewes.

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Colon cancer typically affects older adults, though it can happen at any age. Colon cancer, also known as Caco-2, is caused by multiple epigenetic alterations and involves unregulated proliferation, differentiation, and invasion of neighboring tissues. Colon cancer patients have had surgery, radiation, hormone therapy, and chemotherapy.

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Microscopic robots with features comparable with the wavelength of light offer new ways of probing the microscopic world and controlling light at the microscale. We introduce a new class of magnetically controlled microscopic robots (microbots) that operate at the visible-light diffraction limit, which we term diffractive robots. We combined nanometer-thick mechanical membranes, programmable nanomagnets, and diffractive optical elements to create untethered microbots small enough to diffract visible light and flexible enough to undergo complex reconfigurations in millitesla-scale magnetic fields.

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In this project, we conducted micro-beam sensitivity mapping using the Diamond Light Source (DLS) synchrotron. We fabricated three samples with distinct metal contacts: Platinum (HPS-Pt) and Aluminium/Platinum (HPS-Al/Pt) on high-quality single crystal CVD diamond, and Platinum (VS-Pt) on lower purity single crystal CVD diamond. Our objective was to identify the most suitable sample for synchrotron measurements, particularly focusing on the lower purity sample due to its unique characteristics, such as thin nitrogen lines and substrate area.

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The objective of this study was to examine the response of geranium plants to different irrigation levels (100%, 80%, and 60% based on ET) and Kaolin application rates (0, 100, 200 and 300 ppm) during 2022 and 2023 seasons, at Aly Mobarak Experimental Farm, Horticulture Research Station, located at El-Bustan site, El-Behiera Governorate, Egypt, by using a two-way factorial analysis experimental design. The results revealed that water deficit significantly reduced most studied traits. Irrigation level at 60% based on ET exhibited poorest performance on growth parameters and decreased fresh yield and essential oil yield by 27.

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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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Article Synopsis
  • Scorpion toxins are short cyclic peptides that can disrupt ion channels and are important for drug discovery.
  • A new pipeline using neural networks has been developed to help annotate these toxins from scorpion transcriptomes, overcoming challenges posed by their small size.
  • This innovative method aims to speed up the classification of these toxins, aiding future genome sequencing efforts and drug target identification.
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Objective: Adenoid cystic carcinoma (ACC) is a rare malignant tumor that mainly arises in the head and neck area. We aimed to compare the long-term survival of patients with ACC based on their geographic regions within the United States using the Surveillance, Epidemiology, and End Results (SEER) registry data.

Methods: We queried the SEER database to evaluate the geographic distribution of ACC patients based on inpatient admissions.

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Background: Proteoglycans are important tumor microenvironment extracellular matrix components. The regulation of key proteoglycans, such as decorin (DCN), by miRNAs has drawn attention since they have surfaced as novel therapeutic targets in cancer. Accordingly, this study aimed at identifying the impact of miR-181a in liver cancer and its regulatory role on the extracellular matrix proteoglycan, DCN, and hence on downstream oncogenes and tumor suppressor genes.

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With the COVID-19 pandemic, behavioural scientists aimed to illuminate reasons why people comply with (or not) large-scale cooperative activities. Here we investigated the motives that underlie support for COVID-19 preventive behaviours in a sample of 12,758 individuals from 34 countries. We hypothesized that the associations of empathic prosocial concern and fear of disease with support towards preventive COVID-19 behaviours would be moderated by trust in the government.

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The study investigated the impact of protonation and hydration on the geometry of nitroxide radicals using B3LYP and M06-2X methods. Results indicated that TEMPO exhibited the highest proton affinity in comparison to TEMPOL and TEMPONE. Two pathways contribute to hydrated protonated molecules.

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Tomato ( L.) is one of the most widely consumed and produced vegetable crops worldwide. It offers numerous health benefits due to its rich content of many therapeutic elements such as vitamins, carotenoids, and phenolic compounds.

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Prostate cancer (PCa) is a prevalent form of malignancy in males and is a significant contributor to cancer-related mortality worldwide. Because of this, studying the molecular processes of PCa cell growth and death is crucial. Hence, it is imperative to conduct further research on the regulatory mechanism underlying the progression of PCa to enhance our comprehension and identify innovative therapeutic targets.

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Article Synopsis
  • This study focuses on finding safe ways to stop fungi from damaging old manuscripts that are really old, like from the 13th century.
  • Researchers found and tested different types of fungi that were causing the damage, like Aspergillus niger and Penicillium citrinum, to understand how they work.
  • They discovered that a natural bacteria, Lactobacillus plantarum, can help stop these harmful fungi, and figured out that using a specific concentration of ethyl acetate extract is safe and effective for protecting valuable paper.
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Breeding high yielding water-deficit tolerant rice is considered a primary goal for achieving the objectives of the sustainable development goals, 2030. However, evaluating the performance of the pre-breeding-promising parental-lines for water deficit tolerance prior to their incorporation in the breeding program is crucial for the success of the breeding programs. The aim of the current investigation is to assess the performance of a set of pre-breeding lines compared with their parents.

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Background: The nutritional status and growth of children with Autism spectrum disorders (ASD) is influenced significantly by two factors; food selectivity behaviors due to their consumption of a limited variety of food and the high incidence of gastrointestinal (GIT) disorders.

Aim: This study aimed to assess the nutritional adequacy and growth pattern of ASD children aged three to twelve years compared to their healthy developing peers.

Methods: A national comparative, facility-based cross-sectional study was conducted in eight Egyptian governorates on 285 Egyptian children diagnosed with ASD and 224 children who are their relatives as healthy developing peers.

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Introduction: Healthcare systems in developing countries faced significant challenges during COVID-19, grappling with limited resources and staffing shortages. Assessment of the impact of pharmaceutical care expertise, particularly in critical care units during the pandemics, in developing countries remains poorly explored. The principal aim of our study was to assess the impact of the Drug and Therapeutics Committee (DTC), comprising clinical pharmacists, on the incidence, types, and severity of medication errors and associated costs in using COVID-19 medications, especially antibiotics.

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