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  1. AU="Ahmed H. El-Ghorab"
  2. AU="Kaori Yamamoto"
  3. AU="Cernei C."
  4. AU="Faiz Alfaiz"
  5. AU="Fallon, Anne"
  6. AU="Ramos, Davi L."
  7. AU="Mancini, Valentina"
  8. AU="Lamothe, Valérie"
  9. AU=Powell-Jackson P R AU=Powell-Jackson P R
  10. AU="Neeltje A Kootstra"
  11. AU=Gloria e Silva Filipe AU=Gloria e Silva Filipe
  12. AU="Shuaijia Hao"
  13. AU=Heinrichs Stefan
  14. AU="Khosravan, Shahla"
  15. AU=Garcia-Carracedo Dario
  16. AU="Lannon, Margaret C"
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  18. AU="Choza, Juliana"
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  20. AU="Singh, Jyoti"
  21. AU=Charlier Philippe
  22. AU="Thiermann, Horst"
  23. AU="Gullo, Paride"
  24. AU="Lewis, Gayle"
  25. AU=Jain Harshwardhan AU=Jain Harshwardhan
  26. AU="Gaur, Aman"
  27. AU=Huynh Thu P.
  28. AU=Giebel Clarissa
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  1. Artikel ; Online: Phenylpyrazolone-1,2,3-triazole Hybrids as Potent Antiviral Agents with Promising SARS-CoV-2 Main Protease Inhibition Potential

    Arafa Musa / Hamada S. Abulkhair / Ateyatallah Aljuhani / Nadjet Rezki / Mohamed A. Abdelgawad / Khaled Shalaby / Ahmed H. El-Ghorab / Mohamed R. Aouad

    Pharmaceuticals, Vol 16, Iss 463, p

    2023  Band 463

    Abstract: COVID-19 infection is now considered one of the leading causes of human death. As an attempt towards the discovery of novel medications for the COVID-19 pandemic, nineteen novel compounds containing 1,2,3-triazole side chains linked to phenylpyrazolone ... ...

    Abstract COVID-19 infection is now considered one of the leading causes of human death. As an attempt towards the discovery of novel medications for the COVID-19 pandemic, nineteen novel compounds containing 1,2,3-triazole side chains linked to phenylpyrazolone scaffold and terminal lipophilic aryl parts with prominent substituent functionalities were designed and synthesized via a click reaction based on our previous work. The novel compounds were assessed using an in vitro effect on the growth of SARS-CoV-2 virus-infested Vero cells with different compound concentrations: 1 and 10 μM. The data revealed that most of these derivatives showed potent cellular anti-COVID-19 activity and inhibited viral replication by more than 50% with no or weak cytotoxic effect on harboring cells. In addition, in vitro assay employing the SARS-CoV-2-Main protease inhibition assay was done to test the inhibitors’ ability to block the common primary protease of the SARS-CoV-2 virus as a mode of action. The obtained results show that the one non-linker analog 6h and two amide-based linkers 6i and 6q were the most active compounds with IC 50 values of 5.08, 3.16, and 7.55 μM, respectively, against the viral protease in comparison to data of the selective antiviral agent GC-376. Molecular modeling studies were done for compound placement within the binding pocket of protease which reveal conserved residues hydrogen bonding and non-hydrogen interactions of 6i analog fragments: triazole scaffold, aryl part, and linker. Moreover, the stability of compounds and their interactions with the target pocket were also studied and analyzed by molecular dynamic simulations. The physicochemical and toxicity profiles were predicted, and the results show that compounds behave as an antiviral activity with low or no cellular or organ toxicity. All research results point to the potential usage of new chemotype potent derivatives as promising leads to be explored in vivo that might open the door to rational drug development of SARS-CoV-2 Main protease potent ...
    Schlagwörter 1,2,3-triazole ; click chemistry ; pyrazolone ; SARS-CoV-2 ; antiviral activity ; molecular modeling ; Medicine ; R ; Pharmacy and materia medica ; RS1-441
    Thema/Rubrik (Code) 540
    Sprache Englisch
    Erscheinungsdatum 2023-03-01T00:00:00Z
    Verlag MDPI AG
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  2. Artikel ; Online: Anti-cancer perspectives of resveratrol

    Muhammad Junaid Anwar / Areeba Altaf / Muhammad Imran / Muhammad Amir / Suliman A. Alsagaby / Waleed Al Abdulmonem / Ahmed Mujtaba / Ahmed H. El-Ghorab / Mohammed M. Ghoneim / Muzzamal Hussain / Entessar Al Jbawi / Mohamed E. Shaker / Mohamed A. Abdelgawad

    Food and Agricultural Immunology, Vol 34, Iss

    a comprehensive review

    2023  Band 1

    Abstract: ABSTRACTResveratrol (RVT) is well known for its chemo-preventive and therapeutic attributes against the various kinds of cancers such as breast, prostate, pancreatic, oral, brain, lung and liver. It has been found to inhibit glioblastoma cell growth, ... ...

    Abstract ABSTRACTResveratrol (RVT) is well known for its chemo-preventive and therapeutic attributes against the various kinds of cancers such as breast, prostate, pancreatic, oral, brain, lung and liver. It has been found to inhibit glioblastoma cell growth, declining uPAR and its mediator ERK1/2, inhibiting the cell lines (EC-9706) growth and ADAM9 expression, up-regulating the lncRNAs and PPARγ, inhibition of MTA1 to modulate oncogenic miR-34a, miR-22 and miR-17, enhance the E-cadherin expression and decreased the expressions of Twist1 and vimentin, inhibiting ADAM9 expression, downregulation of ATP2A2 and ATP2A3 genes expressions in different breast cell lines, reduction in IL-6 and COX-2 expression, inhibition of Tax activity of LTR and HTLV-1 in SIRT1 deacetylase, suppression of epithelial-to-mesenchymal transition (EMT) and eEF1A expression and fracas interactions between TEAD and YAP and activation of Hippo/YAP signalling. Consequently, it can be suggested that RVT is a promising agent for treating aforementioned cancers due to its curing characteristics.
    Schlagwörter Anti-cancer activity ; cancer stages ; bioactive compounds ; medication via resveratrol ; chemopreventive ; Agriculture (General) ; S1-972 ; Immunologic diseases. Allergy ; RC581-607
    Thema/Rubrik (Code) 616
    Sprache Englisch
    Erscheinungsdatum 2023-12-01T00:00:00Z
    Verlag Taylor & Francis Group
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  3. Artikel ; Online: Investigation of Chemical Compositions and Biological Activities of Mentha suaveolens L. from Saudi Arabia

    Bashayr Aldogman / Hallouma Bilel / Shaima Mohamed Nabil Moustafa / Khaled F. Elmassary / Hazim M. Ali / Faddaa Qayid Alotaibi / Mohamed Hamza / Mohamed A. Abdelgawad / Ahmed H. El-Ghorab

    Molecules, Vol 27, Iss 2949, p

    2022  Band 2949

    Abstract: Mentha is an aromatic plant used since antiquity for its pharmaceutical virtues. The climate of Saudi Arabia favors the growth of aromatic plants including Mentha suaveolens L. The aim of this study is to analyze the volatile oils of different parts of ... ...

    Abstract Mentha is an aromatic plant used since antiquity for its pharmaceutical virtues. The climate of Saudi Arabia favors the growth of aromatic plants including Mentha suaveolens L. The aim of this study is to analyze the volatile oils of different parts of fresh and dried Mentha suaveolens L. grown in Saudi Arabia (Aljouf area) using Gas Chromatography/Mass Spectrometry (GC/MS) and Gas Chromatography Flame Ionization Detector (GC/FID) techniques, to recognize the effect of drying on chemical composition, then to evaluate the antioxidant and antifungal activities of different extracts. In total, 118 compounds were identified via GC/MS and GC/FID, in which carvone is the main volatile constituent (stems, leaves, whole plant 45–64%). This investigation deduces that Mentha belonged to the carvone chemotype. Then, the analysis of non-volatile constituents of fresh and dried Mentha was performed by HPLC. The main phenolic compound of fresh and dried Mentha for different parts was rosmarinic acid (ranging from 28,002.5 to 6558 µg/g). The ethanolic extract of fresh stem showed the highest antifungal activity (53% inhibition) compared with miconazole (60% inhibition) but the ethanoic extract of dry stem showed no activity. Additionally, all ethanolic extracts, whether for fresh or dry Mentha , have antioxidant activity more than 90% while the antioxidant activity of whole plant volatile oil is equal to 53.33%. This research shows that M. suaveolens L. could be applied to manufacture natural antioxidants, antifungal, and flavoring agents.
    Schlagwörter Mentha suaveolens L ; carvone ; rosmarinic acid ; antioxidant ; antifungal activity ; Organic chemistry ; QD241-441
    Thema/Rubrik (Code) 580
    Sprache Englisch
    Erscheinungsdatum 2022-05-01T00:00:00Z
    Verlag MDPI AG
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  4. Artikel ; Online: EGFR and COX-2 Dual Inhibitor

    Arafa Musa / Ehab M. Mostafa / Syed Nasir Abbas Bukhari / Nasser Hadal Alotaibi / Ahmed H. El-Ghorab / Amr Farouk / AbdElAziz A. Nayl / Mohammed M. Ghoneim / Mohamed A. Abdelgawad

    Molecules, Vol 27, Iss 1158, p

    The Design, Synthesis, and Biological Evaluation of Novel Chalcones

    2022  Band 1158

    Abstract: For most researchers, discovering new anticancer drugs to avoid the adverse effects of current ones, to improve therapeutic benefits and to reduce resistance is essential. Because the COX-2 enzyme plays an important role in various types of cancer ... ...

    Abstract For most researchers, discovering new anticancer drugs to avoid the adverse effects of current ones, to improve therapeutic benefits and to reduce resistance is essential. Because the COX-2 enzyme plays an important role in various types of cancer leading to malignancy enhancement, inhibition of apoptosis, and tumor-cell metastasis, an indispensable objective is to design new scaffolds or drugs that possess combined action or dual effect, such as kinase and COX-2 inhibition. The start compounds A1 to A6 were prepared through the diazo coupling of 3-aminoacetophenone with a corresponding phenol and then condensed with two new chalcone series, C7–18. The newly synthesized compounds were assessed against both COX-2 and epidermal growth factor receptor (EGFR) for their inhibitory effect. All novel compounds were screened for cytotoxicity against five cancer cell lines. Compounds C9 and G10 exhibited potent EGFR inhibition with IC 50 values of 0.8 and 1.1 µM, respectively. Additionally, they also displayed great COX-2 inhibition with IC 50 values of 1.27 and 1.88 µM, respectively. Furthermore, the target compounds were assessed for their cytotoxicity against pancreatic ductal cancer (Panc-1), lung cancer (H-460), human colon cancer (HT-29), human malignant melanoma (A375) and pancreatic cancer (PaCa-2) cell lines. Interestingly, compounds C10 and G12 exhibited the strongest cytotoxic effect against PaCa-2 with average IC 50 values of 0.9 and 0.8 µM, respectively. To understand the possible binding modes of the compounds under investigation with the receptor cites of EGFR and COX-2, a virtual docking study was conducted.
    Schlagwörter EGFR ; COX-2 ; kinase ; anticancer ; anti-inflammatory ; Organic chemistry ; QD241-441
    Thema/Rubrik (Code) 616
    Sprache Englisch
    Erscheinungsdatum 2022-02-01T00:00:00Z
    Verlag MDPI AG
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  5. Artikel ; Online: Chemical characteristics and targeted encapsulated Cordia myxa fruits extracts nanoparticles for antioxidant and cytotoxicity potentials

    Khaled F. El-Massry / Amr Farouk / Khaled F. Mahmoud / Ahmed H. El-Ghorab / Sherif S. M / Arafa Musa / Ehab M. Mostafa / Mohammed M. Ghoneim / Ibrahim A. Naguib / Mohamed A. Abdelgawad

    Saudi Journal of Biological Sciences, Vol 28, Iss 9, Pp 5349-

    2021  Band 5358

    Abstract: A promising Cordia myxa fruit (CMF) extract targets an additional incorporation in functional foods. It retains appropriate health welfares owing to its antioxidant properties with limited incorporation in food matrices due its hydrophobicity. Therefore, ...

    Abstract A promising Cordia myxa fruit (CMF) extract targets an additional incorporation in functional foods. It retains appropriate health welfares owing to its antioxidant properties with limited incorporation in food matrices due its hydrophobicity. Therefore, CMF extract micro- and nanocapsulation was performed to protect and facilitate consistency of produced hydrophobic foods matrices. Furthermore, to determine its phytochemicals, antioxidant, and cytotoxic effects by applying analytical HPLC, FRAP and SRB assay, respectively. HPLC analysis of the tested extracts revealed the presence of, 25.59 ± 1.78 mg catechin/g, 69.68 ± 4.20 mg quercetin/g, and 112.72 ± 8.38 mg gallic acid/g extract. The CMF extract displayed a potent DPPH radicals' scavenger and FRAP high reduction capability in a dose-dependent manner. The potent pharmacological activities of CMF extract may be ascribed to high concentration of polyphenolics including flavonoids which strongly reported to possess an antitumor and antioxidant activities. To confirm the efficient CMF incorporation in micro- and nanosystems and their thermal stabilities to withstand the high temperatures applied during some food processing. DSC of the apparent melt of non-capsulated CMF and encapsulated forms (MCMF and NCMF) in sodium alginate gel and beads was studied. Results showed that melting point of CMF extract (86.17 °C) indicating its inability whereas the MCMF and NCMF melting points (226.45 and 383.87 °C, respectively) demonstrating the capability of expending alginate – packaging material to shield the vital active compounds of C. myxa fruit to be applied in different targeted delivery products especially that disclosed to high thermal treatments.
    Schlagwörter Cordia myxa fruit ; Encapsulation ; Phenolic content ; Flavonoids ; Antioxidant ; Cytotoxicity ; Biology (General) ; QH301-705.5
    Thema/Rubrik (Code) 500
    Sprache Englisch
    Erscheinungsdatum 2021-09-01T00:00:00Z
    Verlag Elsevier
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  6. Artikel ; Online: Correlation between chemical composition and radical scavenging activity of 10 commercial essential oils

    Hoda Hanem Mohamed Fadel / Ahmed H. El-Ghorab / Ahmed M.S. Hussein / Khaled F. El-Massry / Shereen Nazeh Lotfy / Mohamad Yehia Sayed Ahmed / Tarek Nour Soliman

    Arabian Journal of Chemistry, Vol 13, Iss 8, Pp 6815-

    Impact of microencapsulation on functional properties of essential oils

    2020  Band 6827

    Abstract: A comparative study was carried out on the essential oils of 10 aromatic plants that are extensively used in Egypt for their distinctive aroma and functional properties. Each essential oil (EO) was characterized by means of gas chromatography-mass ... ...

    Abstract A comparative study was carried out on the essential oils of 10 aromatic plants that are extensively used in Egypt for their distinctive aroma and functional properties. Each essential oil (EO) was characterized by means of gas chromatography-mass spectrometry (GC–MS) analysis and evaluated for its radical scavenging activity by 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2-azinobis (2-ethyl-benzolhiaxoline-6-sulfonic acid)(ABTS) assays. The phenolic content of the 10 EOs was in the descending order: clove > thyme > majoram > basil > anise > chamomile > cinnamon > dill > ginger > rosemary. The radical scavenging activity of the EOs was correlated to the presence of phenolic compounds, such as eugenol, thymol, carvacrol and trans-anethol, or the synergism between the antioxidant activity of nonphenolic compounds such as terpinene-4-ol, α-terpinene, curcumene and chamazulene. Clove essential oil exhibited the highest oil content and radical scavenging activity so it was encapsulated, separately, in three coating materials. Sodium alginate showed the highest retention, encapsulation efficiency and loading capacity of clove EO. Microencapsulation in sodium alginate and chitosan improved the antioxidant activity and phenolic content of the encapsulated clove EO compared with carboxymethyl cellulose. The results support the possibility of using the encapsulated EOs as natural and easy handle antioxidants.
    Schlagwörter Scavenging radical activity ; Essential oil ; Encapsulation ; Phenolic content ; Emulsion extrusion ; Chemistry ; QD1-999
    Thema/Rubrik (Code) 540
    Sprache Englisch
    Erscheinungsdatum 2020-08-01T00:00:00Z
    Verlag Elsevier
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  7. Artikel: Stability of encapsulated beef-like flavourings prepared from enzymatically hydrolysed mushroom proteins with other precursors under conventional and microwave heating

    Lotfy, Shereen N / Ahmed H. El-Ghorab / Hoda H.M. Fadel / Mohamed S. Shaheen

    Food chemistry. 2015 Nov. 15, v. 187

    2015  

    Abstract: A comparative study was carried out between two beef-like flavourings prepared by conventional and microwave heating (CBF and MBF) of enzymatic hydrolysate of mushroom protein with other flavour precursors. GC–MS analysis of the isolated volatiles ... ...

    Abstract A comparative study was carried out between two beef-like flavourings prepared by conventional and microwave heating (CBF and MBF) of enzymatic hydrolysate of mushroom protein with other flavour precursors. GC–MS analysis of the isolated volatiles revealed that the thiol containing compounds were the predominate in both samples. However, MBF comprised higher concentration of these compounds (13.84±0.06%) than CBF (10.74±0.06%). The effect of microencapsulation with gum Arabic by using spray drying on the odour profile and volatile compounds of the two encapsulated samples (E-CBF and E-MBF) was investigated. The results revealed significant qualitative and quantitative variations in the volatiles of both samples. The highly volatile compounds decreased remarkably in concentration with encapsulation, while the pyrazines, thiazoles and disulphides showed opposite trend. The significant decrease in the thiol containing compounds in E-CBF and E-MBF were attributed to their oxidation to other compounds such as disulphide compounds which showed significant increase in the encapsulated samples.
    Schlagwörter flavor ; flavorings ; gas chromatography-mass spectrometry ; gum arabic ; hydrolysates ; hydrolysis ; microencapsulation ; microwave treatment ; mushrooms ; odors ; oxidation ; proteins ; pyrazines ; spray drying ; sulfides ; thiazoles ; thiols ; volatile compounds
    Sprache Englisch
    Erscheinungsverlauf 2015-1115
    Umfang p. 7-13.
    Erscheinungsort Elsevier Ltd
    Dokumenttyp Artikel
    ZDB-ID 243123-3
    ISSN 1873-7072 ; 0308-8146
    ISSN (online) 1873-7072
    ISSN 0308-8146
    DOI 10.1016/j.foodchem.2015.04.027
    Datenquelle NAL Katalog (AGRICOLA)

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