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  1. Article ; Online: Quantitative Analysis of Bioaccessible Phenolic Compounds in Aegean Bee Bread Using LC-HRMS Coupled with a Human Digestive System Model.

    Erol, Ebru

    Chemistry & biodiversity

    2024  Volume 21, Issue 3, Page(s) e202301497

    Abstract: Bee bread, a valuable bee product that has recently attracted significant public interest as a nutritional supplement. The aim of this study was to evaluate the presence of phenolic compounds in bee bread samples from the Aegean Region and assess their ... ...

    Abstract Bee bread, a valuable bee product that has recently attracted significant public interest as a nutritional supplement. The aim of this study was to evaluate the presence of phenolic compounds in bee bread samples from the Aegean Region and assess their bioaccessibility using a simulated human digestion model. Various extraction techniques, such as maceration, ultrasound-assisted extraction, and supercritical fluid extraction were employed to obtain extracts of bee bread. The antioxidant capabilities of these extracts were carried out using assays like DPPH⋅, ABTS⋅
    MeSH term(s) Humans ; Bees ; Animals ; Propolis ; Antioxidants/pharmacology ; Antioxidants/analysis ; Phenols/analysis ; Ascorbic Acid ; Digestive System/chemistry
    Chemical Substances Propolis (9009-62-5) ; Antioxidants ; Phenols ; Ascorbic Acid (PQ6CK8PD0R)
    Language English
    Publishing date 2024-02-14
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2139001-0
    ISSN 1612-1880 ; 1612-1872
    ISSN (online) 1612-1880
    ISSN 1612-1872
    DOI 10.1002/cbdv.202301497
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: In silico

    Linani, Abderahmane / Benarous, Khedidja / Erol, Ebru / Bou-Salah, Leila / Serseg, Talia / Yousfi, Mohamed

    Journal of biomolecular structure & dynamics

    2023  , Page(s) 1–16

    Abstract: Monkeypox virus is a viral disease transmitted to humans through contact with infected animals, such as monkeys and rodents, or through direct contact with the bodily fluids or lesions of infected humans. The aim of this study is to ... ...

    Abstract Monkeypox virus is a viral disease transmitted to humans through contact with infected animals, such as monkeys and rodents, or through direct contact with the bodily fluids or lesions of infected humans. The aim of this study is to evaluate
    Language English
    Publishing date 2023-11-20
    Publishing country England
    Document type Journal Article
    ZDB-ID 49157-3
    ISSN 1538-0254 ; 0739-1102
    ISSN (online) 1538-0254
    ISSN 0739-1102
    DOI 10.1080/07391102.2023.2283149
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Anti-SARS-CoV-2 and cytotoxic activity of two marine alkaloids from green alga

    Erol, Ebru / Orhan, Muge Didem / Avsar, Timucin / Akdemir, Atilla / Okudan, Emine Sukran / Alim Toraman, Gulbahar Ozge / Topcu, Gulacti

    RSC advances

    2022  Volume 12, Issue 46, Page(s) 29983–29990

    Abstract: ... Caulerpa ... ...

    Abstract Caulerpa cylindracea
    Language English
    Publishing date 2022-10-19
    Publishing country England
    Document type Journal Article
    ISSN 2046-2069
    ISSN (online) 2046-2069
    DOI 10.1039/d2ra03358e
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Instant determination of the artemisinin from various Artemisia annua L. extracts by LC‐ESI‐MS/MS and their in‐silico modelling and in vitro antiviral activity studies against SARS‐CoV‐2

    Dogan, Kubra / Erol, Ebru / Didem Orhan, Muge / Degirmenci, Zehra / Kan, Tugce / Gungor, Aysen / Yasa, Belkis / Avsar, Timucin / Cetin, Yuksel / Durdagi, Serdar / Guzel, Mustafa

    Phytochemical analysis. 2022 Mar., v. 33, no. 2

    2022  

    Abstract: INTRODUCTION: Numerous efforts in natural product drug development are reported for the treatment of Coronavirus. Based on the literature, among these natural plants Artemisia annua L. shows some promise for the treatment of SARS‐CoV‐2. OBJECTIVE: The ... ...

    Abstract INTRODUCTION: Numerous efforts in natural product drug development are reported for the treatment of Coronavirus. Based on the literature, among these natural plants Artemisia annua L. shows some promise for the treatment of SARS‐CoV‐2. OBJECTIVE: The main objective of our study was to determine artemisinin content by liquid chromatography electrospray ionisation tandem mass spectrometry (LC‐ESI‐MS/MS), to investigate the in vitro biological activity of artemisinin from the A. annua plants grown in Turkey with various extracted methods, to elaborate in silico activity against SARS‐CoV‐2 using molecular modelling. METHODOLOGY: Twenty‐one different extractions were applied. Direct and sequential extractions studies were compared with ultrasonic assisted maceration, Soxhlet, and ultra‐rapid determined artemisinin active molecules by LC‐ESI‐MS/MS methods. The inhibition of spike protein and main protease (3CL) enzyme activity of SARS‐CoV‐2 virus was assessed by time resolved fluorescence energy transfer (TR‐FRET) assay. RESULTS: Artemisinin content in the range 0.062–0.066%. Artemisinin showed significant inhibition of 3CL protease activity but not Spike/ACE‐2 binding. The 50% effective concentration (EC₅₀) of artemisinin against SARS‐CoV‐2 Spike pseudovirus was found greater than 50 μM (EC₄₅) in HEK293T cell line whereas the cell viability was 94% of the control (P < 0.01). The immunosuppressive effects of artemisinin on TNF‐α production on both pseudovirus and lipopolysaccharide (LPS)‐induced THP‐1 cells were found significant in a dose dependent manner. CONCLUSION: Further studies of these extracts for COVID‐19 treatment will shed light to seek alternative treatment options. Moreover, these natural extracts can be used as an additional treatment option with medicines, as well as prophylactic use can be very beneficial for patients.
    Keywords Artemisia annua ; COVID-19 infection ; Pseudovirus ; Severe acute respiratory syndrome coronavirus 2 ; antiviral properties ; artemisinin ; cell lines ; cell viability ; computer simulation ; dose response ; drug development ; electrospray ionization mass spectrometry ; energy transfer ; enzyme activity ; fluorescence ; immunosuppression ; lipopolysaccharides ; liquid chromatography ; maceration ; median effective concentration ; phytochemicals ; proteinases ; tandem mass spectrometry ; ultrasonics ; viruses
    Language English
    Dates of publication 2022-03
    Size p. 303-319.
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 1073576-8
    ISSN 1099-1565 ; 0958-0344
    ISSN (online) 1099-1565
    ISSN 0958-0344
    DOI 10.1002/pca.3088
    Database NAL-Catalogue (AGRICOLA)

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  5. Article ; Online: Biochemical Profile and In Vitro Therapeutic Properties of Two Euhalophytes,

    Gheraissa, Noura / Chemsa, Ahmed Elkhalifa / Cherrada, Nezar / Erol, Ebru / Elsharkawy, Eman Ramadan / Ghemam-Amara, Djilani / Zeghoud, Soumeia / Rebiai, Abdelkrim / Messaoudi, Mohammed / Sawicka, Barbara / Atanassova, Maria / Abdel-Kader, Maged S

    Molecules (Basel, Switzerland)

    2023  Volume 28, Issue 8

    Abstract: This study reports the biochemical profile and in vitro biological activities of the aerial part of two shrubs: ...

    Abstract This study reports the biochemical profile and in vitro biological activities of the aerial part of two shrubs:
    MeSH term(s) Hydrogen Peroxide/metabolism ; Ecosystem ; Chenopodiaceae ; Plant Extracts/chemistry ; Antioxidants/pharmacology ; Antioxidants/metabolism ; Africa, Northern
    Chemical Substances Hydrogen Peroxide (BBX060AN9V) ; Plant Extracts ; Antioxidants
    Language English
    Publishing date 2023-04-19
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1413402-0
    ISSN 1420-3049 ; 1431-5165 ; 1420-3049
    ISSN (online) 1420-3049
    ISSN 1431-5165 ; 1420-3049
    DOI 10.3390/molecules28083580
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Phytochemical profiling of

    Cherrada, Nezar / Elkhalifa Chemsa, Ahmed / Erol, Ebru / Günaydın Akyildiz, Aysenur / Oyku Dinc, Harika / Gheraissa, Noura / Ghemam Amara, Djilani / Rebiai, Abdelkrim / Abdel-Kader, Maged S / Messaoudi, Mohammed

    Saudi pharmaceutical journal : SPJ : the official publication of the Saudi Pharmaceutical Society

    2023  Volume 31, Issue 9, Page(s) 101731

    Abstract: This study aimed to investigate the phytochemical composition and biological activity ... ...

    Abstract This study aimed to investigate the phytochemical composition and biological activity of
    Language English
    Publishing date 2023-08-05
    Publishing country Saudi Arabia
    Document type Journal Article
    ZDB-ID 1378024-4
    ISSN 1319-0164
    ISSN 1319-0164
    DOI 10.1016/j.jsps.2023.101731
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Instant determination of the artemisinin from various Artemisia annua L. extracts by LC-ESI-MS/MS and their in-silico modelling and in vitro antiviral activity studies against SARS-CoV-2.

    Dogan, Kubra / Erol, Ebru / Didem Orhan, Muge / Degirmenci, Zehra / Kan, Tugce / Gungor, Aysen / Yasa, Belkis / Avsar, Timucin / Cetin, Yuksel / Durdagi, Serdar / Guzel, Mustafa

    Phytochemical analysis : PCA

    2021  Volume 33, Issue 2, Page(s) 303–319

    Abstract: Introduction: Numerous efforts in natural product drug development are reported for the treatment of Coronavirus. Based on the literature, among these natural plants Artemisia annua L. shows some promise for the treatment of SARS-CoV-2.: Objective: ... ...

    Abstract Introduction: Numerous efforts in natural product drug development are reported for the treatment of Coronavirus. Based on the literature, among these natural plants Artemisia annua L. shows some promise for the treatment of SARS-CoV-2.
    Objective: The main objective of our study was to determine artemisinin content by liquid chromatography electrospray ionisation tandem mass spectrometry (LC-ESI-MS/MS), to investigate the in vitro biological activity of artemisinin from the A. annua plants grown in Turkey with various extracted methods, to elaborate in silico activity against SARS-CoV-2 using molecular modelling.
    Methodology: Twenty-one different extractions were applied. Direct and sequential extractions studies were compared with ultrasonic assisted maceration, Soxhlet, and ultra-rapid determined artemisinin active molecules by LC-ESI-MS/MS methods. The inhibition of spike protein and main protease (3CL) enzyme activity of SARS-CoV-2 virus was assessed by time resolved fluorescence energy transfer (TR-FRET) assay.
    Results: Artemisinin content in the range 0.062-0.066%. Artemisinin showed significant inhibition of 3CL protease activity but not Spike/ACE-2 binding. The 50% effective concentration (EC
    Conclusion: Further studies of these extracts for COVID-19 treatment will shed light to seek alternative treatment options. Moreover, these natural extracts can be used as an additional treatment option with medicines, as well as prophylactic use can be very beneficial for patients.
    MeSH term(s) Antiviral Agents/pharmacology ; Artemisia annua/chemistry ; Artemisinins/pharmacology ; COVID-19/drug therapy ; Chromatography, Liquid ; HEK293 Cells ; Humans ; Plant Extracts/chemistry ; Plant Extracts/pharmacology ; SARS-CoV-2 ; Tandem Mass Spectrometry
    Chemical Substances Antiviral Agents ; Artemisinins ; Plant Extracts
    Language English
    Publishing date 2021-09-28
    Publishing country England
    Document type Journal Article
    ZDB-ID 1073576-8
    ISSN 1099-1565 ; 0958-0344
    ISSN (online) 1099-1565
    ISSN 0958-0344
    DOI 10.1002/pca.3088
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Antioxidant, anticholinesterase and tyrosinase inhibition activities, and fatty acids of Crocus mathewii - A forgotten endemic angiosperm of Turkey.

    Yildiztekin, Fatma / Nadeem, Said / Erol, Ebru / Yildiztekin, Mahmut / Tuna, Atilla L / Ozturk, Mehmet

    Pharmaceutical biology

    2016  Volume 54, Issue 9, Page(s) 1557–1563

    Abstract: Context We report the first ever chemical/biochemical study on Crocus mathewii Kerndorff (Iridaceae) - a Turkish endemic angiosperm. This plant has never been explored for its phytochemistry and bioactivities. Objective This study explores C. mathewii ... ...

    Abstract Context We report the first ever chemical/biochemical study on Crocus mathewii Kerndorff (Iridaceae) - a Turkish endemic angiosperm. This plant has never been explored for its phytochemistry and bioactivities. Objective This study explores C. mathewii corm and aerial parts for the chemical and biological properties of hexane, ethyl acetate, methanol and water fractions of the extracts. Material and methods Plant material (20 g) was extracted by methanol (250 mL × 5, 3 days each) and fractioned into hexane, ethyl acetate, methanol and water. All fractions were subjected to β-carotene-linoleic acid, DPPH(·), ABTS(·)(+), CUPRAC, metal chelating and tyrosinase inhibition activities. Hexane fractions were submitted to GC-MS analysis. Results Ethyl acetate fractions showed excellent IC50 values in DPPH(·) (aerial 36.21 ± 0.76 and corm 33.87 ± 0.02 mg/L) and ABTS(·)(+) (aerial 33.01 ± 0.79 and bulb 27.87 ± 0.33 mg/L); higher than the IC50 of the standard α-tocopherol (DPPH 116.25 ± 1.97; ABTS 52.64 ± 0.37 mg/L), higher than BHA in DPPH (57.31 ± 0.25 mg/L), but slightly lower in ABTS (19.86 ± 2.73 mg/L). Methanol extract of aerial parts also showed higher activity than α-tocopherol in DPPH (85.56 ± 11.51 mg/L) but slightly less (72.90 ± 3.66 mg/L) than both the standards in ABTS. Linoleic (aerial 53.9%, corm 43.9%) and palmitic (aerial 22.2%, corm 18%) were found as the major fatty acids. Discussion and conclusion Some fractions of C. mathewii showed higher antioxidant activities than the standards. There is a need to explore more about this plant.
    MeSH term(s) Antioxidants/isolation & purification ; Antioxidants/pharmacology ; Benzothiazoles/chemistry ; Biphenyl Compounds/chemistry ; Chelating Agents/isolation & purification ; Chelating Agents/pharmacology ; Cholinesterase Inhibitors/isolation & purification ; Cholinesterase Inhibitors/pharmacology ; Crocus/chemistry ; Fatty Acids/isolation & purification ; Fatty Acids/pharmacology ; Gas Chromatography-Mass Spectrometry ; Linoleic Acid/isolation & purification ; Linoleic Acid/pharmacology ; Monophenol Monooxygenase/antagonists & inhibitors ; Monophenol Monooxygenase/metabolism ; Palmitic Acid/isolation & purification ; Palmitic Acid/pharmacology ; Phytotherapy ; Picrates/chemistry ; Plant Components, Aerial ; Plant Extracts/isolation & purification ; Plant Extracts/pharmacology ; Plants, Medicinal ; Solvents/chemistry ; Sulfonic Acids/chemistry ; Turkey
    Chemical Substances Antioxidants ; Benzothiazoles ; Biphenyl Compounds ; Chelating Agents ; Cholinesterase Inhibitors ; Fatty Acids ; Picrates ; Plant Extracts ; Solvents ; Sulfonic Acids ; 2,2'-azino-di-(3-ethylbenzothiazoline)-6-sulfonic acid (28752-68-3) ; Palmitic Acid (2V16EO95H1) ; Linoleic Acid (9KJL21T0QJ) ; 1,1-diphenyl-2-picrylhydrazyl (DFD3H4VGDH) ; Monophenol Monooxygenase (EC 1.14.18.1)
    Language English
    Publishing date 2016-09
    Publishing country England
    Document type Journal Article
    ZDB-ID 1440131-9
    ISSN 1744-5116 ; 1388-0209
    ISSN (online) 1744-5116
    ISSN 1388-0209
    DOI 10.3109/13880209.2015.1107746
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Chemical composition, antioxidant, anticholinesterase, antimicrobial and antibiofilm activities of essential oil and methanolic extract of Anthemis stiparum subsp. sabulicola (Pomel) Oberpr.

    Chemsa, Ahmed Elkhalifa / Zellagui, Amar / Öztürk, Mehmet / Erol, Ebru / Ceylan, Ozgür / Duru, Mehmet Emin / Lahouel, Mesbah

    Microbial pathogenesis

    2018  Volume 119, Page(s) 233–240

    Abstract: Anthemis species are traditionally used to treat infectious and inflammatory processes, among others clinical disturbances. In the current study, the chemical composition, the total phenolic and flavonoid contents, the antioxidant, anticholinesterase, ... ...

    Abstract Anthemis species are traditionally used to treat infectious and inflammatory processes, among others clinical disturbances. In the current study, the chemical composition, the total phenolic and flavonoid contents, the antioxidant, anticholinesterase, antimicrobial, and antibiofilm activities of Anthemis stiparum subsp. sabulicola aerial parts methanolic extract (As-ME) and essential oil (As-EO) were investigated. The chemical composition of As-EO was established by GC-MS and GC-FID. Total phenolic and flavonoid contents of As-ME were spectrophotometrically determined. Diphenyl-1-picrylhydrazyl (DPPH
    MeSH term(s) Anthemis/chemistry ; Anti-Infective Agents/pharmacology ; Antioxidants/pharmacology ; Bacillus subtilis/drug effects ; Biofilms ; Candida albicans/drug effects ; Cholinesterase Inhibitors/pharmacology ; Flavonoids ; Methanol ; Microbial Sensitivity Tests ; Oils, Volatile/chemistry ; Oils, Volatile/metabolism ; Oils, Volatile/pharmacology ; Phenols ; Plant Extracts/pharmacology ; Staphylococcus aureus/drug effects
    Chemical Substances Anti-Infective Agents ; Antioxidants ; CML-1 plant extract ; Cholinesterase Inhibitors ; Flavonoids ; Oils, Volatile ; Phenols ; Plant Extracts ; Methanol (Y4S76JWI15)
    Language English
    Publishing date 2018-04-21
    Publishing country England
    Document type Journal Article
    ZDB-ID 632772-2
    ISSN 1096-1208 ; 0882-4010
    ISSN (online) 1096-1208
    ISSN 0882-4010
    DOI 10.1016/j.micpath.2018.04.033
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Chemical constituents of essential oil of endemic Rhanterium suaveolens Desf. growing in Algerian Sahara with antibiofilm, antioxidant and anticholinesterase activities.

    Chemsa, Ahmed Elkhalifa / Erol, Ebru / Öztürk, Mehmet / Zellagui, Amar / Özgür, Ceylan / Gherraf, Noureddine / Duru, Mehmet Emin

    Natural product research

    2016  Volume 30, Issue 18, Page(s) 2120–2124

    Abstract: Twenty compounds were detected in the essential oil of Rhanterium suaveolens representing 98.01% of the total oil content. Perillaldehyde (45.79%), caryophyllene oxide (24.82%) and β-cadinol (5.61%) were identified as the main constituents. In β-carotene- ...

    Abstract Twenty compounds were detected in the essential oil of Rhanterium suaveolens representing 98.01% of the total oil content. Perillaldehyde (45.79%), caryophyllene oxide (24.82%) and β-cadinol (5.61%) were identified as the main constituents. In β-carotene-linoleic acid assay, both the oil and the methanol extract exhibited good lipid peroxidation inhibition activity, with IC50 values of 17.97 ± 5.40 and 11.55 ± 3.39 μg/mL, respectively. In DPPH and CUPRAC assays, however, the methanol extract exhibited a good antioxidant activity. The highest antibiofilm activity has been found 50.30% against Staphylococcus epidermidis (MU 30) at 20 μg/mL for essential oil and 58.34% against Micrococcus luteus (NRRL B-4375) at 25 mg/mL concentration for methanol extract. The in vitro anticholinesterase activity of methanol extract showed a moderate acetylcholinesterase inhibitory (IC50 = 168.76 ± 0.62 μg/mL) and good butyrylcholinesterase inhibitory (IC50 = 54.79 ± 1.89 μg/mL) activities. The essential oil was inactive against both enzymes.
    MeSH term(s) Africa, Northern ; Algeria ; Anti-Bacterial Agents/chemistry ; Anti-Bacterial Agents/pharmacology ; Antioxidants/pharmacology ; Asteraceae/chemistry ; Biofilms/drug effects ; Biphenyl Compounds ; Cholinesterase Inhibitors/pharmacology ; Lipid Peroxidation/drug effects ; Methanol ; Microbial Sensitivity Tests ; Micrococcus luteus/drug effects ; Oils, Volatile/chemistry ; Oils, Volatile/pharmacology ; Picrates ; Plant Extracts/chemistry ; Plant Extracts/pharmacology ; Solvents ; Staphylococcus epidermidis/drug effects
    Chemical Substances Anti-Bacterial Agents ; Antioxidants ; Biphenyl Compounds ; Cholinesterase Inhibitors ; Oils, Volatile ; Picrates ; Plant Extracts ; Solvents ; 1,1-diphenyl-2-picrylhydrazyl (DFD3H4VGDH) ; Methanol (Y4S76JWI15)
    Language English
    Publishing date 2016-09
    Publishing country England
    Document type Journal Article
    ZDB-ID 2185747-7
    ISSN 1478-6427 ; 1478-6419
    ISSN (online) 1478-6427
    ISSN 1478-6419
    DOI 10.1080/14786419.2015.1110705
    Database MEDical Literature Analysis and Retrieval System OnLINE

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