Publications by authors named "Samir Osman"

(1) Background and aim: Aloe arborescens Mill. (A. arborescens) is one of the most widely distributed species in the genus Aloe and has garnered widespread recognition for its anticancer properties.

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Dyes are one of the common contaminants in industrial wastewater. Adsorption is the most widely method which used to treat dye-contaminated water due to their easy use, cost-effectiveness, and their efficiency was high. The aim of this study is the investigating of the utilization of the activated carbon which prepared from Raphanus seeds solid residual (ACRS) as a low cost adsorbent for removing of cationic Methylene Blue dye (MB)from wastewater.

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Acute Lung Injury (ALI) is a life-threatening syndrome that has been identified as a potential complication of COVID-19. There is a critical need to shed light on the underlying mechanistic pathways and explore novel therapeutic strategies. This study aimed to examine the potential therapeutic effects of essential oil (CCEO) in treating potassium dichromate (PDC)-induced ALI.

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The optimal environments for ruminants are air temperatures between 13 and 20 °C, winds between 5 and 18 km/h, humidity levels between 55 and 65%, and a moderate amount of sunlight. In tropical and subtropical regions, climate is the top factor restricting animal growth and reproductive efficiency. The digestive system, blood biochemical components, and hormones all go through a range of physiological changes at high temperatures.

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This study was intended to explore sociodemographic, nutritional, and health-related factors on the incidence of COVID-19 infection within the Egyptian population by assessing the frequency and determinants of post-COVID-19 symptoms and complications. A cross-sectional study using a structured survey on 15,166 participants was adopted. The results revealed common symptoms including fever (79.

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Purpose: The purpose of this study was to compare the degree of perilymphatic enhancement between 4 hour post-contrast constant flip angle three-dimensional fluid attenuated inversion recovery (3D-FLAIR) images obtained with short repetition time (TR) and those obtained with long TR.

Materials And Methods: This single-center, prospective study included patients who underwent MRI of the inner ear with heavily T2-weighted sequence, 3D-FLAIR sequence with a "short" TR of 10,000 ms (s3D-FLAIR) and with a "long" TR of 16,000 ms (l3D-FLAIR). Signal intensity ratio (SIR) and contrast-to-noise ratio (CNR) obtained with s3D-FLAIR and l3D-FLAIR were quantitatively assessed using region of interest (ROI) method and compared.

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Due to their unique physicochemical characteristics, palladium nanoparticles (Pd-NPs) have shown tremendous promise in biological applications. The biosynthesis of Pd-NPs employing Saudi propolis has been designed to be environmental, fast, controlled, and cost-effective. The formation and stability of biosynthesized Pd-NPs by Saudi propolis extract were proved by ultraviolet-visible spectrophotometry (UV-Vis), Fourier-transform infrared spectroscopy (FT-IR), and Zeta potential analysis.

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Background: The plants of high phenolic contents are perfect antioxidant and anti-inflammatory agents and participate in biological studies as effective agents towards different cancer cell lines.

Objective: To investigate the antioxidant, anti-inflammatory, and cytotoxic activities of the hydromethanolic leaf extract of Jasminum multiflorum (Burm. f.

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UPLC-MS/MS profiling of Cassia glauca leaves extract revealed the identification of 10 flavonoids. Kaempferol 3-O-β-D-rutinoside was isolated and studied for its cytotoxic activity. It showed high cytotoxic effects against MCF-7 (IC50 of 4.

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In this study chemical profiling of L. () using HPLC-PDA/MS/MS and evaluation of its cytotoxicity towards the human breast cancer cell line (MCF-7), human colorectal cancer cell (HCT-116) and human hepatocellular carcinoma (Huh-7) cell lines. The viability % was determined by the neutral red uptake assay.

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This study focused on the profiling of phenolic constituents in 80% methanolic extracts of the leaves of some species cultivated in Egypt and their antioxidant activities. Phenolic profiling was performed by total phenolic contents, total flavonoid contents and HPLC-DAD for selected species in comparison to authentic standards. DPPH assay was used to estimate the antioxidant activities of L.

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The commercial value of cashew nut shell liquid (CNSL) has become a cornerstone of the agrowaste industry. It is the by-product of the cashew industry and has an 1/8 inch thickness of soft honeycomb structure. CNSL contains phenolic lipids with aliphatic chains such as anacardic acid, cardanol, cardol and methyl cardol, and their derivatives.

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Ethnopharmacological Relevance: The red Brazilian cherry, Eugenia uniflora, is widely used in traditional medicine. The aim of this study was to investigate the phytochemical composition of a methanol extract from leaves of E. uniflora and characterization of the isolated compounds.

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The wax apple () is traditionally employed as an antibacterial and immunostimulant drug in traditional medicine. This plant is rich in different flavonoids and tannins. In this study, we isolated two compounds from leaves: myricitrin and 3,5-di--methyl gossypetin.

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Background: Plants belonging to the genus such as and are used traditionally to treat several diseases and health disorders. Up to this date, the roots of and the fruits of are the mostly studied plant parts. The phytochemical composition and the biological activities of the leaves of both species are not well identified so far.

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A hitherto unknown polyoxygenated flavonol robinobioside (gossypetin-3---d-robinobioside) was isolated from the leaves of along with thirteen known phenolic secondary metabolites. The isolated compounds were characterized using spectroscopic analysis, including 1D and 2D NMR and mass spectrometry (MS) analyses. The extract reduced the level of liver damage in CCl₄-induced liver injury in rats.

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Objectives: The aim of this study was to investigate the potential anticancer properties of a methanol extract of Rheum palmatum roots against diethylnitrosamine (DENA)-induced hepatocellular carcinoma (HCC) in rats and to characterize its phytoconstituents.

Methods: HPLC-PDA-MS/MS was used to profile the secondary metabolites in R. palmatum root extract.

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Chemical investigation of  subsp.  Retz. revealed isolation of one new hydroxy- fatty acid () identified as (6-, 10-)-9-hydroxy henicosa-6,10-dienoic acid in addition to six known metabolites; hexadecanoic acid (), β-sitosterol (), β-amyrin (), β-sitosterol-glucoside (), 2,3-dihydroxypropyl tetradecanoate () and (Z)-9-hydroxypentadec-6-enoic acid ().

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Context: Terminalia muelleri Benth. (Combretaceae), is rich with phenolics that have antioxidant and cytotoxic activities. No screening studies were published before on T.

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Background: Caesalpinia gilliesii Hook is an ornamental shrub with showy yellow flowers. It was used in folk medicine due to its contents of different classes of secondary metabolites. In our previous study, dichloromethane extract of C.

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Background: Salsola imbricata Forssk. is a shrub widely growing in Egypt, used as a camel food, traditionally, used as anti-inflammatory agent. Literature survey showed no report about the anti-inflammatory activity of S.

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Phytochemical investigation of Gomphocarpus fruticosus (L.) Ait. of Egyptian origin afforded the new pregnane glycoside lineolon-3-O-[β-D-oleandropyranosyl-(1-4)-β-D-cymaropyranosyl-(1-4)-β-D-cymaropyranoside], along with six known compounds.

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Article Synopsis
  • Some Launaea species are traditionally used for treating liver oxidative stress, and this study focuses on the protective effects of compounds from Launaea spinosa against oxidative damage in liver cells (HepG2).
  • The research identified a new phenolic compound along with five others and tested their ability to reduce oxidative stress induced by tert-butyl hydroperoxide (t-BHP) through measuring specific enzyme levels.
  • Results showed that certain compounds significantly lowered enzyme levels that indicate liver damage, suggesting that the phenolic compounds from L. spinosa can help protect against oxidative stress and maintain cell health.
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