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The British University in Egypt

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Articles 1 - 16 of 16

Full-Text Articles in Natural Products Chemistry and Pharmacognosy

Karafsin, A Unique Mono-Acylated Flavonoid Apiofurnoside From The Leaves Of Apium Graveolens Var. Secalinum Alef: In Vitro And In Vivo Anti-Inflammatory Assessment, Noha Swilam, Mahmoud Nawwar, Eman Mostafa, Dalia Mostafa, Mai Ragab Dec 2022

Karafsin, A Unique Mono-Acylated Flavonoid Apiofurnoside From The Leaves Of Apium Graveolens Var. Secalinum Alef: In Vitro And In Vivo Anti-Inflammatory Assessment, Noha Swilam, Mahmoud Nawwar, Eman Mostafa, Dalia Mostafa, Mai Ragab

Pharmacy

Celery ethanol extract (CEE) of leaves of Apium graveolens var. secalinum Alef, showed high phenolic content with significant antioxidant activity using DPPH and ORAC assay. Two unique unknown compounds, apigenin 7-O-mono-apiofuranoside and acylated flavonoid, 7-O- (5″-E-p-coumaroyl)-apiofuranside (karafsin) were identified in CEE for the first time by a full structural analysis, along with 6 known compounds. While karafsin significantly inhibited cyclooxygenase-2 by 42.52 ± 2.88 and 70.33 ± 2.97 % at 50 and 100 mg/mL and 5-lipoxygenase by 37.33 ± 2.87 and 75.77 ± 2.57 % at 50 and 100 mg/mL in raw macrophage cells challenged with Escherichia coli lipopolysaccharide, CEE …

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Comparative Estimation Of The Cytotoxic Activity Of Different Parts Of Cynara Scolymus L.: Crude Extracts Versus Green Synthesized Silver Nanoparticles With Apoptotic Investigation, Shady Swidan, Amgad Khedr, Abdelaziz Farrag, Ali Nasr, Mohamed Nafie, Maged Abdel-Kader, Marwa Goda, Jihan Badr, Reda Abdelhameed Oct 2022

Comparative Estimation Of The Cytotoxic Activity Of Different Parts Of Cynara Scolymus L.: Crude Extracts Versus Green Synthesized Silver Nanoparticles With Apoptotic Investigation, Shady Swidan, Amgad Khedr, Abdelaziz Farrag, Ali Nasr, Mohamed Nafie, Maged Abdel-Kader, Marwa Goda, Jihan Badr, Reda Abdelhameed

Pharmacy

Different parts of Cynara scolymus L. and their green synthesized eco-friendly silver nanoparticles (AgNPs) were screened for their cytotoxicity and apoptotic activity. Results showed that flower extract AgNPs exhibited more potent cytotoxicity compared to the normal form against PC-3 and A549 cell lines with IC50 values of 2.47 μg/mL and 1.35 μg/mL, respectively. The results were compared to doxorubicin (IC50 = 5.13 and 6.19 μg/mL, respectively). For apoptosis-induction, AgNPs prepared from the flower extract induced cell death by apoptosis by 41.34-fold change and induced necrotic cell death by 10.2-fold. Additionally, they induced total prostate apoptotic cell death by a 16.18-fold …

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Silver Nanoparticles Formulation Of Flower Head’S Polyphenols Of Cynara Scolymus L.: A Promising Candidate Against Prostate (Pc-3) Cancer Cell Line Through Apoptosis Activation, Shady Swidan, Amgad Khedr, Marwa Goda, Abdelaziz Farrag, Ali Nasr, Mohamed Nafie, Maged Abdel-Kader, Jihan Badr, Reda Abdelhameed Sep 2022

Silver Nanoparticles Formulation Of Flower Head’S Polyphenols Of Cynara Scolymus L.: A Promising Candidate Against Prostate (Pc-3) Cancer Cell Line Through Apoptosis Activation, Shady Swidan, Amgad Khedr, Marwa Goda, Abdelaziz Farrag, Ali Nasr, Mohamed Nafie, Maged Abdel-Kader, Jihan Badr, Reda Abdelhameed

Pharmacy

Cynara scolymus L. (Family: Compositae) or artichoke is a nutritious edible plant widely used for its hepatoprotective effect. Crude extracts of flower, bract, and stem were prepared and evaluated for their in vitro antioxidant activity and phenolic content. The flower crude extract exhibited the highest phenolic content (74.29 mg GAE/gm) as well as the best in vitro antioxidant activity using total antioxidant capacity (TAC), ferric reducing antioxidant power (FEAP), and 1,1-diphenyl-2-picrylhyazyl (DPPH) scavenging assays compared with ascorbic acid. Phenolic fractions of the crude extracts of different parts were separated and identified using high-performance liquid chromatography HPLC-DAD analysis. The silver nanoparticles …

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Enhanced Antioxidant, Antiviral, And Anticancer Activities Of The Extract Of Fermented Egyptian Rice Bran Complexed With Hydroxypropyl-Β-Cyclodextrin, Khaled Nematallah, Sherif Ashraf Fahmy, Noha Khalil Mahdy, Hesham El-Askry, Meselhy Ragab Meselhy, Hassan El-Said Azzazy Jun 2022

Enhanced Antioxidant, Antiviral, And Anticancer Activities Of The Extract Of Fermented Egyptian Rice Bran Complexed With Hydroxypropyl-Β-Cyclodextrin, Khaled Nematallah, Sherif Ashraf Fahmy, Noha Khalil Mahdy, Hesham El-Askry, Meselhy Ragab Meselhy, Hassan El-Said Azzazy

Pharmacy

Egyptian rice bran was fermented with baker’s yeast, and released phenolics were extracted with aqueous methanol to give fermented rice bran extract (FRBE). The analysis of the FRBE with ultra-performance liquid chromatography–electrospray ionization–tandem mass spectrometry revealed 21 compounds, mainly phenolic acids and flavonoids. The FRBE was then complexed with (2-hydroxypropyl)-β-cyclodextrin (HPβCD) via noncovalent host–guest inclusion complexation using the thin-film hydration technique to improve the hydrophilicity and bioactivity of the FRBE. The formation of the inclusion complex was confirmed using HPLC, 1H NMR, FT-IR, and a phase solubility study. In addition, the biological activities of the complex were investigated. The FRBE/HPβCD …

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Antidiabetic Activity And In Silico Molecular Docking Of Polyphenols From Ammannia Baccifera L. Subsp. Aegyptiaca (Willd.) Koehne Waste: Structure Elucidation Of Undescribed Acylated Flavonol Diglucoside, Noha Swilam, Mahmoud Nawwar, Rasha Radwan, Eman Mostafa Feb 2022

Antidiabetic Activity And In Silico Molecular Docking Of Polyphenols From Ammannia Baccifera L. Subsp. Aegyptiaca (Willd.) Koehne Waste: Structure Elucidation Of Undescribed Acylated Flavonol Diglucoside, Noha Swilam, Mahmoud Nawwar, Rasha Radwan, Eman Mostafa

Pharmacy

Chemical investigation of the aerial parts of Ammania aegyptiaca ethanol extract (AEEE) showed high concentrations of polyphenol and flavonoid content, with notable antioxidant activity. Undescribed acylated diglucoside flavonol myricetin 3-O-β-4C1-(600-O-galloyl glucopyranoside) 7-Oβ-4C1-glucopyranoside (MGGG) was isolated from the aerial parts of AEEE, along with four known polyphenols that had not been characterized previously from AEEE. The inhibitory effects of MGGG, AEEE, and all compounds against α-amylase, pancreatic lipase and β-glucosidase were assessed. In addition, molecular docking was used to determine the inhibition of digestive enzymes, and this confirmed that the MGGG interacted strongly with the active site residues of these enzymes, …

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Phytochemical Constituents Of Aquilaria Malaccensis Leaf Extract And Their Anti-Inflammatory Activity Against Lps/Ifn-Γ-Stimulated Raw 264.7 Cell Line, Eman Ramadan, Manar A. Eissa, Yumi Z. H-Y Hashim, Dina M. El-Kersh Jan 2022

Phytochemical Constituents Of Aquilaria Malaccensis Leaf Extract And Their Anti-Inflammatory Activity Against Lps/Ifn-Γ-Stimulated Raw 264.7 Cell Line, Eman Ramadan, Manar A. Eissa, Yumi Z. H-Y Hashim, Dina M. El-Kersh

Pharmacy

This study aims to identify the major phytochemical constituents in Aquilaria malaccensis (Thymelaeaceae) ethanolic leaf extract (ALEX-M) and elucidate their ability to suppress nitric oxide (NO) production from a murine macrophage-like cell line (RAW 264.7) stimulated by lipopolysaccharide (LPS) and interferon-γ (IFN-γ). Dichloromethane (DCM) and ethyl acetate (EtOAc) fractions of ALEX-M were subjected to column chromatography. Eight known compounds were isolated for the first time from this species. Compounds were identified using spectroscopic techniques (IR, UV, HRESIMS, and 1D and 2D NMR). Anti-inflammatory activity of both extract and isolated compounds were investigated in vitro. The fractions offered the isolation of …

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Hplc/Msn Profiling And Healing Activity Of A Muco-Adhesive Formula Of Salvadora Persica Against Acetic Acid-Induced Oral Ulcer In Rats, Nahla Ayoub, Nadia Badr, Saeed S. Ai-Ghamdi, Safaa Alsanosi, Abdullah R. Alzahrani, Ashraf B. Abdel-Naim, Khaled Nematallah, Noha Swilam Nov 2021

Hplc/Msn Profiling And Healing Activity Of A Muco-Adhesive Formula Of Salvadora Persica Against Acetic Acid-Induced Oral Ulcer In Rats, Nahla Ayoub, Nadia Badr, Saeed S. Ai-Ghamdi, Safaa Alsanosi, Abdullah R. Alzahrani, Ashraf B. Abdel-Naim, Khaled Nematallah, Noha Swilam

Pharmacy

Salvadora persica L. (S. persica, Siwak) is an ethnic plant that is widely used for improving oral hygiene. ThisstudyaimedtoprovideaphytochemicalprofilingofS.persica ethylacetate fraction (SPEAF)and to evaluate the healing activity of a muco-adhesive formula of the fraction against acetic acid-induced oral ulcers in rats. HPLC-ESI-QTOF-MS-MS analysis of SPEAF resulted in the tentative identification of 56 metabolites containing fatty acids (23%), urea derivatives (10.5%) and sulphur compounds (10%), in addition to several amides, polyphenols and organic acids (6.5%, 5% and 2%, respectively). For the first time, 19 compounds were identified from S. persica. In vitro and in vivo experiments indicated that the extract is …

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Downregulation Of Mmp1 Expression Mediates The Anti-Aging Activity Of Citrus Sinensis Peel Extract Nanoformulation In Uv Induced Photoaging In Mice, Dalia Attia, Reham Amer, Shahira Ezzat, Nora Aborehab, Mai Ragab, Dalia Mohamed, Amira Hashad, Maha Salama, Mahitab El Bishbishy Mar 2021

Downregulation Of Mmp1 Expression Mediates The Anti-Aging Activity Of Citrus Sinensis Peel Extract Nanoformulation In Uv Induced Photoaging In Mice, Dalia Attia, Reham Amer, Shahira Ezzat, Nora Aborehab, Mai Ragab, Dalia Mohamed, Amira Hashad, Maha Salama, Mahitab El Bishbishy

Pharmacy

Aging of the skin is a complicated bioprocess that is affected by constant exposure to ultraviolet irradiation. The application of herbal-based anti-aging creams is still the best choice for treatment. In the present study, Citrus sinensis L. fruit peels ethanolic extract (CSPE) was formulated into lipid nanoparticles (LNPs) anti-aging cream. Eight different formulations of CSEP-LNPs were prepared and optimized using 23 full factorial designs. In vivo antiaging effect of the best formula was tested in Swiss albino mice where photo-aging was induced by exposure to UV radiation. HPLC-QToF-MS/MS metabolic profiling of CSPE led to the identification of twenty-nine metabolites. CSPE …

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Anti‑Estrogenic And Anti‑Aromatase Activities Of Citrus Peels Major Compounds In Breast Cancer, Maha Salama, Dina Mahmoud Elkersh, Shahira M. Ezzat, Yasmeen Attiaa, Engy A. Mahrous, Mohey Elmazar Mar 2021

Anti‑Estrogenic And Anti‑Aromatase Activities Of Citrus Peels Major Compounds In Breast Cancer, Maha Salama, Dina Mahmoud Elkersh, Shahira M. Ezzat, Yasmeen Attiaa, Engy A. Mahrous, Mohey Elmazar

Pharmacy

Estrogen signaling is crucial for breast cancer initiation and progression. Endocrine-based therapies comprising estrogen receptor (ER) modulators and aromatase inhibitors remain the mainstay of treatment. This study aimed at investigating the antitumor potential of the most potent compounds in citrus peels on breast cancer by exploring their anti-estrogenic and anti-aromatase activities. The ethanolic extract of different varieties of citrus peels along with eight isolated flavonoids were screened against estrogen-dependent breast cancer cell lines besides normal cells for evaluating their safety profile. Naringenin, naringin and quercetin demonstrated the lowest IC50s and were therefore selected for further assays. In silico molecular modeling …

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A Unique Acylated Flavonol Glycoside From Prunus Persica (L.) Var. Florida Prince: A New Solid Lipid Nanoparticle Cosmeceutical Formulation For Skincare, Noha Swilam, Eman Mostafa, Ahmed Maher, Dalia Mostafa, Sameh Gad, Mahmoud Nawwar Mar 2021

A Unique Acylated Flavonol Glycoside From Prunus Persica (L.) Var. Florida Prince: A New Solid Lipid Nanoparticle Cosmeceutical Formulation For Skincare, Noha Swilam, Eman Mostafa, Ahmed Maher, Dalia Mostafa, Sameh Gad, Mahmoud Nawwar

Pharmacy

Polyphenols are known dietary antioxidants. They have recently attracted considerable interest in uses to prevent skin aging and hyperpigmentation resulting from solar UV-irradiation. Prunus persica (L.) leaves are considered by-products and were reported to have a remarkable antioxidant activity due to their high content of polyphenols. This study aimed at the development of a cosmeceutical anti-aging and skin whitening cream preparation using ethanol leaves extract of Prunus persica (L.) (PPEE) loaded in solid lipid nanoparticles (SLNs) to enhance the skin delivery. Chemical investigation of PPEE showed significantly high total phenolic and flavonoids content with notable antioxidant activities (DPPH, ABTS, and …

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Celecoxib Loaded In-Situ Provesicular Powder And Its In-Vitro Cytotoxic Effect For Cancer Therapy: Fabrication, Characterization, Optimization And Pharmacokinetic Evaluation, Shady Swidan, Ali Nasr, Sameh Elhady, Noha Badawi Nov 2020

Celecoxib Loaded In-Situ Provesicular Powder And Its In-Vitro Cytotoxic Effect For Cancer Therapy: Fabrication, Characterization, Optimization And Pharmacokinetic Evaluation, Shady Swidan, Ali Nasr, Sameh Elhady, Noha Badawi

Pharmacy

Introduction: Several recent studies have shown that the role of cyclooxygenase 2 (COX-2) in carcinogenesis has become more evident. It affects angiogenesis, apoptosis, and invasion, and plays a key role in the production of carcinogens. It has also been reported that COX-2 inhibitors such as celecoxib (CLX) might play an effective role in preventing cancer formation and progression. Formulation of CLX into nanovesicles is a promising technique to improve its bioavailability and anticancer efficacy. Aim: The aim of this study is to optimize and evaluate the anticancer efficacy of CLX-loaded in-situ provesicular powder composed of surfactants and fatty alcohol-based novel …

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Polyphenols Profile Of Pomegranate Leaves And Their Role In Green Synthesis Of Silver Nanoparticles, Noha Swilam, Khaled Nematallah Sep 2020

Polyphenols Profile Of Pomegranate Leaves And Their Role In Green Synthesis Of Silver Nanoparticles, Noha Swilam, Khaled Nematallah

Pharmacy

The current study reports on polyphenols profile of pomegranate leaves (PL) Punica granatum grown in Egypt and exhibiting their role in development of an eco-friendly method of green synthesis of silver nanoparticles (AgNPs). PL aqueous alcohol extract was fractionated, the major phenolic compound was isolated from the polyphenols rich fraction (ethyl acetate fraction) and identified by conventional and spectroscopic methods of analysis as ellagic acid. Furthermore, the fraction was standardized and analysed using UPLC-PDA-UV and LC–MS-MS techniques revealing tentative identification of 23 polyphenolic compounds, quantifying ellagic acid as 43.14 ± 0.57 μg/mg of the fraction. AgNPs were successfully synthesized with …

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Dietary Xanthones, Dina M. El-Kersh, Mohamed A. Farag, Hesham R. Elseedi, Omar M. Khattab Jan 2020

Dietary Xanthones, Dina M. El-Kersh, Mohamed A. Farag, Hesham R. Elseedi, Omar M. Khattab

Pharmacy

Xanthones, polyphenolic compounds, are one of the most important classes in natural products, as they exhibit variety of pharmacological and health benefits, i.e., anti-obesity, antidiabetic, antioxidant, anti-Alzheimer, anti-inflammatory, and anticancer. Xanthones can be found in higher plants that are used as food sources.

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Impact Of Extraction Technique On The Volatile Oil Contents And Composition Of Four Ocimum Species; Microwave Assisted Extraction Versus Distillation Study, Dina M. El-Kersh, Dalia Rasheed, Manar Eissa Jan 2019

Impact Of Extraction Technique On The Volatile Oil Contents And Composition Of Four Ocimum Species; Microwave Assisted Extraction Versus Distillation Study, Dina M. El-Kersh, Dalia Rasheed, Manar Eissa

Pharmacy

Objectives: The aim of this study is to unravel the variabilities posed by alteration of the extraction technique employed on the contents and composition of essential oils derived from the same plant species Methods: Volatile oils of four different Ocimum species (Ocimum basilicum L., O. africanum Lour., O. americanum L. and O. minimum L. family Lamiaceae) were individually extracted from their fresh aerial parts using green microwave assisted extraction (MAE) method and conventional hydrodistillation (HD) and steam distillation (SD) methods. Extracted volatile oil samples were further analysed by GC-MS. Results: Qualitatively, distillation of the Ocimum samples resulted in higher yields …

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Cytotoxicity And Chemical Investigation Of The Aerial Parts Of Markhamia Zanzibarica (Bojer Ex Dc.) K. Schum. (Bignoniaceae), Dina M. El-Kersh, Riham S. El Dine, Dina R. Abou-Hussein, Fatma S. El-Sakhawy, Mohamed M. Elmazar Jan 2016

Cytotoxicity And Chemical Investigation Of The Aerial Parts Of Markhamia Zanzibarica (Bojer Ex Dc.) K. Schum. (Bignoniaceae), Dina M. El-Kersh, Riham S. El Dine, Dina R. Abou-Hussein, Fatma S. El-Sakhawy, Mohamed M. Elmazar

Pharmacy

The ethanolic extract of the aerial parts of Markhamia zanzibarica (Bignoniaceae) was tested for its cytotoxic activity against human cervical adenocarcinoma cell line (HeLa). It showed a potent effect with an IC50 of 9.68 μg/ml compared to Doxorubicin (7.28 μg/ml). The fractions obtained from the successive partitioning of the total extract, were tested against the same cell line; the results revealed that n-hexane extract was the most potent 9.23 μg/ml, followed by ethyl acetate, butanol and chloroform fractions with IC50 of 21.2, 22.4 and 49.6 μg/ml, respectively. Column chromatography led to the isolation of oleanolic acid (1), ursolic acid (2) …

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Anabolic And Androgenic Effects Of Certain Atriplex Species Grown In Egypt, Dina M. El-Kersh, Fatma S. El-Sakhawy, Dina R. Abou-Hussein, Amany A. Sleem Nov 2012

Anabolic And Androgenic Effects Of Certain Atriplex Species Grown In Egypt, Dina M. El-Kersh, Fatma S. El-Sakhawy, Dina R. Abou-Hussein, Amany A. Sleem

Pharmacy

20-Hydroxyecdysone (20-HE) was detected by TLC in the ethyl acetate fraction of two Atriplex species grown in Egypt: A. lindleyi subsp. inflata and A. leucoclada. EIA quantification of 20-HE proved its presence in a concentration of 9.15 and 7.3 μg/g dried aerial parts in each of the two species, respectively. Significant anabolic and androgenic activities were demonstrated for 20-HE comparing to testosterone; the study also revealed that the total alcohol extract and the ethyl acetate fraction of A. lindleyi subsp. inflata exhibited greater activities than their analogues in A. leucoclada. Column chromatographic fractionation of the ethyl acetate fraction of the …

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