Yazar "Cziaky, Zoltan" seçeneğine göre listele

Listeleniyor 1 - 6 / 6
  • Küçük Resim
    Öğe
    HPLC-MS/MS chemical characterization and biological properties of Origanum onites extracts: a recent insight
    (TAYLOR & FRANCIS LTD, 2019) Mahomoodally, Mohamad Fawzi; Zengin, Gökhan; Aladağ, Mustafa Onur; Özparlak, Haluk; Diuzheva, Alina; Jeko, Jozsef; Cziaky, Zoltan; Aumeeruddy, Muhammad Zakariyyah
    This study investigated into the phytochemical profile and biological properties of extracts (methanol and aqueous) of Origanum onites based on the antioxidant, enzyme inhibitory, and antibacterial activities. The aqueous extract exhibited higher antioxidant activities in the 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2 '-azino-bis(3-ethylbenzothiazoline)-6-sulfonic acid (ABTS), ferric reducing antioxidant power, cupric reducing antioxidant capacity, phosphomolybdenum, and metal chelating assays, compared to the methanol extract. In contrast, the methanol extract was the most effective inhibitor of acetylcholinesterase, butyrylcholinesterase, tyrosinase, alpha-amylase, and alpha-glucosidase. The methanol extract also showed higher antibacterial activity with highest inhibition against Escherichia coli (MIC = 6.25 mg/mL). The total phenolic content was higher in the aqueous extract while the methanol extract possessed higher total flavonoid content. A total of 28 and 18 compounds (belonging to polyphenols, flavonoids, terpenoids, and ester classes) were identified from the methanol and water extracts, respectively. These findings suggest that O. onites could be helpful in the management of oxidative stress-associated diseases including diabetes and neurodegenerative complications.
  • Küçük Resim Yok
    Öğe
    HPLC-MS/MS-based metabolic profiling and pharmacological properties of extracts and infusion obtained from Amelanchier parviflora var. dentata
    (ELSEVIER SCIENCE BV, 2018) Zengin, Gökhan; Diuzheva, Alina; Jeko, Jozsef; Cziaky, Zoltan; Bulut, Gizem; Doğan, Ahmet; Haznedaroğlu, Mehmet Zeki
    Arnelanchierparviflora var. dentata is an endemic medicinal plant traditionally consumed to treat stomach pain, cardiovascular diseases, and urinary tract infections in Turkey's folk medicine. Although Amelanchier genus is an excellent source of phytochemicals with a panoply of biological activities, no report has been made available on Amelanchier parviflora var. dentata. Thus, the metabolic profiles of methanol, ethyl acetate, and water extracts were obtained using HPLC-MS/MS. Besides, the pharmacological properties such as antioxidant activity and enzyme inhibition effects against acetyl/butyrylcholinesterase, tyrosinase, alpha-amylase, and alpha-glucosidase were evaluated. In total, 62, 38, and 16 metabolites were Identified from the methanolic, water, and ethyl acetate extracts, respectively. The identified metabolites belong to anthocyanins, phenolic acids, and flavonoids. The tested extracts exhibited different enzyme inhibitory activity against cholinesterases (acetylcholinesterase: 0.52-2.47 mg GEs/g extract and butyrylcholinesterase: 0.47-3.59 mg GEs/g extract), tyrosinase (19,0-145.54 mg KAEs/g extract), alpha-amylase (0.23-1.10 mmol ACEs/g extract), and alpha-glucosidase (8.89-9.92 mmol ACEs/ g extract). Evidence from the present study supports the necessity for more research in an endeavor to discover biologically active secondary metabolites from A. parviflora to manage specific ailments.
  • Küçük Resim
    Öğe
    Investigation of chemical profile, biological properties of Lotus corniculatus L. extracts and their apoptotic-autophagic effects on breast cancer cells
    (ELSEVIER, 2019) Yerlikaya, Şerife; Baloğlu, Mehmet Cengiz; Diuzheva, Alina; Jeko, Jozsef; Cziaky, Zoltan; Zengin, Gökhan
    This study aimed to reveal chemical profiles and biological activities of ethyl acetate (EA), methanol (MeOH), and water extracts of Lotus corniculatus. Ethnobotanical reports have indicated the importance of phytochemical properties of the genus Lotus. In this study, the effects of medicinal plant extracts on antioxidant (DPPH, ABTS, CUPRAC, FRAP, phosphomolybdenum, and metal chelating assays), enzyme inhibitory (on cholinesterase, tyrosinase, a-amylase and a-glucosidase), DNA protection and anticancer properties (including anti-proliferative, cell death and telomerase activity marker gene analysis, apoptotic DNA fragmentation analysis, cell migration test) were evaluated. According to chemical analysis, quercetin derivatives geraldol, isorhamnetin and kaempferol-O-coumaroylhexoside-O-deoxyhexoside isomers were dominant in the extracts. MeOH extracts showed the highest total flavonoids capacity with 21.13 mg RE/g. EA extract showed the strongest anti-amylase activity among the tested extracts. Water extract had the most protective activity against plasmid DNA. To indicate cell survival, MIT test was performed against human MCF-7 and MDA-MB-231 breast cancer cells. Half-maximal inhibitory concentration for cells were calculated and used for detection of mechanisms behind the cancer cell death. EA extract showed up-regulation of Bax proapoptotic gene and apoptotic DNA fragmentation activity on highly invasive MDA-MB-231 cells. Beclin-1 and LC3-II autophagy genes were higly expressed after treatment of MCF-7 cells with EA extracts. EA and MeOH extracts inhibited cell migration ability of both cancer cells. Linoleamide, was dominant component in EA extract and caused apoptosis on MDA-MB-231 breast cancer cells via increasing intranuclear Ca2+. The detailed mechanism behind the anticancer properties should be further investigated. (C) 2019 Elsevier B.V. All rights reserved.
  • Küçük Resim
    Öğe
    Metabolomic profile of Salvia viridis L. root extracts using HPLC-MS/MS technique and their pharmacological properties: A comparative study
    (ELSEVIER SCIENCE BV, 2019) Zengin, Gökhan; Mahomoodally, Fawzi; Picot-Allain, Carene; Diuzheva, Alina; Jeko, Jozsef; Cziaky, Zoltan; Cvetanovic, Aleksandra; Aktümsek, Abdurrahman; Zeković, Zoran; Rengasamy, Kannan R.R.
    Several Salvia species have received due scientific attention regarding their therapeutic virtues, yet little is known about the pharmacological potential of Salvia viridis L. roots. This study, therefore, attempts to explore the phytochemical composition, enzyme inhibitory potential, and antioxidant activities of S. viridis ethanolic root extracts obtained by different extraction methods, namely microwave-assisted extraction, maceration, supercritical fluid extraction, Soxhlet extraction, and ultrasonic assisted extraction. The extract produced by ultrasonic assisted extraction possessed the highest phenolic and flavonoid contents (111.41 mg gallic acid equivalent/g extract and 23.46 mg rutin equivalent/g extract). S. viridis ethanolic root extract obtained by ultrasonic assisted extraction showed highest radical scavenging (240.00 and 302.85 mg Trolox equivalent TE/g for DPPH (1,1-diphenyl-2-picrylhydrazyl) and ABTS (2,2'-azino-bis(3-ethylbenzothiazoline)-6-sulfonic acid) assays, respectively) and reducing (970.74, 704.27 mg TE/g, and 2.84 mmol TE/g for CUPRAC (cupric reducing antioxidant capacity), FRAP (ferric reducing antioxidant power), and phosphomolybdenum assays, respectively) activities. Chemical profiles of these extracts were investigated by HPLC MS/MS, and the profiles (23 components) of the supercritical fluid extract was different from other extraction techniques. The study reports for the first time, the inhibitory action of ethanolic root extract of S. viridis on key enzymes related to Alzheimer's disease (acetylcholinesterase, butyrylcholinesterase), diabetes (a-amylase, a-glucosidase), and skin hyperpigmentation disorders (tyrosinase). Data generated from this study appraises the multiple biological activities of plants belonging to the Salvia genus. Scientific evidence gathered in this study support further investigations which might lead to the development of new pharmaceutical entities for the management of diabetes, Alzheimer's disease, and skin hyperpigmentation conditions.
  • Küçük Resim
    Öğe
    Multiple biological activities of two Onosma species (O. sericea and O. stenoloba) and HPLC-MS/MS characterization of their phytochemical composition
    (ELSEVIER, 2020) Stankovic, Jelena S. Katanic; Ceylan, Ramazan; Zengin, Gökhan; Matic, Sanja; Juric, Tatjana; Diuzheva, Alina; Jeko, Jozsef; Cziaky, Zoltan; Aktümsek, Abdurrahman
    Members of the Onosma genus are widely used in folk medicine and they have great interest in the pharmaceutical industry. In this study, phytochemical characterization, antioxidant activity (2,2-dipheny1-1-picrylhydrazyl (DPPH), 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid (ABTS), ferric reducing antioxidant power (FRAP), cupric reducing antioxidant capacity (CIJPRAC), metal chelation, and phosphomolybdenum assays), enzyme inhibition (acetylcholinesterase (AChE), butyrylcholinesterase (BChE), alpha-amylase, alpha-glucosidase, and tyrosinase), antimicrobial activity (microdilution method), genotoxic and antigenotoxic (by using Drosophila melanogaster larvae and Comet assay) potentials of Onosma sericea Willd. and Onosma stenoloba Hausskn. ex Riedl. were investigated. Additionally, the bioactive compounds were identified by high performance liquid chromatography-mass spectrometry/mass spectrometry (HPLC-MS/MS) analysis. Generally, O. sericea showed stronger antioxidant activity, while O. stenoloba extract exhibited stronger enzyme inhibitory abilities (cholinesterases and alpha-amylase). The protective effects of extracts, at the concentration range from 25 to 400 mu g/mL, against hydroxyl radical-induced DNA damage were dose-dependent, increasing with a higher dosage. The extracts at the highest concentration (80 mg/mL) showed the absence of genotoxicity in vivo. Antigenotoxic effects were evident after treatment with both extracts, with a percentage reduction of over 80 %. Overall antimicrobial activity of studied extracts was weak, with the lowest minimal inhibitory concentration values (MIC) of 2.5 mg/mL. Taken together, obtained results showed that tested Onosma species can be considered as promising sources of bioactive phytochemicals for pharmacological purposes.
  • Küçük Resim
    Öğe
    Qualitative fingerprint analysis and multidirectional assessment of different crude extracts and essential oil from wild Artemisia santonicum L.
    (MDPI, 2019) Ferrante, Claudio; Zengin, Gökhan; Menghini, Luigi; Diuzheva, Alina; Jeko, Jozsef; Cziaky, Zoltan; Recinella, Lucia; Chiavaroli, Annalisa; Leone, Sheila; Brunetti, Luigi; Lobine, Devina; Şenkardeş, İsmail; Mahomoodally, Mohamad Fawzi; Orlando, Giustino
    Artemisia species are used as folk medicines in several countries. This work was aimed to shed more light on the effect of methanol, water, ethyl acetate extracts, and essential oil (EO) of A. santonicum on selected enzymes (cholinesterase, tyrosinase alpha-amylase, and alpha-glucosidase) as well of their antioxidant and pharmacological effects. The chemical profile of the essential oil was determined using gas chromatography coupled to mass spectrometry (GC-MS) analysis, while the extracts were chemically characterized by high performance liquid chromatography coupled to mass spectrometry (HPLC-MS). Forty-nine constituents were identified and camphor (36.6%), 1,8-cineole (10.2%), alpha-thujone (10.1%), borneol (4.5%), and beta-thujone (3.6%) were the major components. Overall, 45, 74, and 67 components were identified from the ethyl acetate, methanol, and water extracts, respectively. The EO and extracts showed significant antioxidant properties, in a cell-free model; particularly, methanol and water extracts revealed promising sources of antioxidant compounds. Additionally, we evaluated protective effects of EO and extracts in isolated rat colon tissue challenged with lipopolysaccharide (LPS), as an ex vivo model of colon inflammation, and human colon cancer HCT116 cell line. Particularly, we observed that, among all tested samples, A. santonicum ethyl acetate displayed the best pharmacological profile, being able to blunt LPS-induced levels of all tested biomarkers of inflammation and oxidative stress, including colon nitrites, lactate dehydrogenase, prostaglandin E-2, and serotonin. Additionally, this extract was also able to reduce HCT116 cell viability, thus suggesting potential antiproliferative effects against colon cancer cells. Based on our results, A. santonicum has great potential for developing novel functional agents including pharmaceuticals, cosmeceuticals, and nutraceuticals.