Publications by authors named "Bektas Tepe"

Candidiasis, caused by opportunistic fungal pathogens of the genus, poses a significant threat to immunocompromised individuals. Natural compounds derived from medicinal plants have gained attention as potential sources of anti-fungal agents. Ajwa dates ( L.

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  • * AgNPs-S demonstrated strong antibacterial activity against various bacteria by disrupting their cell membranes and inhibiting biofilm formation and QS signaling, which is crucial for bacterial virulence.
  • * The nanoparticles also showed antioxidant effects and potential cytotoxicity against lung cancer cells, suggesting they could serve as alternative therapeutic agents to develop new antibiotics, though more research is needed to understand their mechanisms and safety for in vivo use.
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Boiss. is a rare desert plant known to be a promising source of bioactive compounds. In this paper, we report for the first time the phytochemical composition and biological activities of hydroalcoholic extract by using liquid chromatography-electrospray tandem mass spectrometry (ESI-MS/MS) technique.

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  • - The study investigates how certain flavonols, specifically robinin (ROB) and gossypetin (GOS), interact with key targets related to COVID-19, including the virus's receptor binding domain and important proteases, showing their potential efficacy against the virus.
  • - ROB and GOS displayed strong binding affinities and stability in simulations, with lower binding free energy values indicating better interaction with the virus's targets; however, they do have some violations of Lipinski's rule regarding druglikeness.
  • - Although both compounds showed no significant toxicity and demonstrated potential therapeutic benefits for COVID-19, further testing is needed to assess their effects on liver enzymes and cellular metabolism before they can be considered for treatment.
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  • Covid-19, caused by SARS-CoV-2, has resulted in over 4.3 million deaths worldwide and the virus continues to mutate, leading to variants like E484K, N501Y, and the South Africa triple mutant that evade immunity.
  • This study aimed to analyze how these spike protein variants interact with the ACE2 receptor compared to the wild-type, using advanced computational modeling and simulations to understand binding affinities and stability.
  • Findings revealed that these variants bind more strongly to ACE2 than the wild-type, with the E484K and triple mutants being particularly stable, indicating important implications for vaccine efficacy and treatment strategies.
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The aim of this study was to determine the element content of wild edible and inedible mushroom species (Agaricus campestris, Armillaria ostoyae, Boletus reticulatus, Bondarzewia mesenterica, Bovistella utriformis, Cantharellus cibarius, Marasmius oreades, Megacollybia platyphylla, Meripilus giganteus, Neoboletus erythropus, Panellus stipticus, Phaeotremella foliacea, Pleurotus ostreatus, Podoscypha multizonata, Russula aurea, R. chloroides, R. virescens, T.

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Wild edible mushrooms are very popular for both their flavors and nutritional values. However, some mushroom species can be harmful to human health as they accumulate some elements in excessive amounts. The aim of this study was to determine the concentrations of Al, Ca, Cd, Cr, Cu, Fe, K, Mg, Mn, P, Se, and Zn of some wild edible (Agaricus arvensis, A.

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The ability of mushrooms to accumulate heavy metals has increased concerns over their toxic effects on human health in recent years. The aim of this study was to determine the metal contents (Zn, Fe, Co, Mn, Cu, Pb, Ni, and Cd), daily intake of metal (DIM) and health risk index (HRI) values of nineteen different mushroom species (edible, inedible, and poisonous) collected from Uzungol, Trabzon (Turkey). Although the area where mushrooms were collected has the status of "Natural Park," there has been an excessive human settlement in recent years.

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It is known that some Campanula species are traditionally used because of their anti-allergic, spasmolytic, antiphlogistic, antioxidant, and antiviral properties. This study was designed to evaluate the phytochemical composition, antioxidant, α-amylase, and tyrosinase inhibitory activity of ethyl acetate, methanol, and water extracts of Campanula macrostachya Waldst. & Kit.

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The aim of this study was to determine the essential element (Zn, Ca, K, Fe, Na, and Mg), essential trace element (Co, Mn, Cr, and Cu), and non-essential element (Pb, Ni, and Cd) contents of eight different Russula species (R. risigallina (Batsch) Sacc., R.

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Coronavirus Disease 2019 (COVID-19) has infected more than thirty five million people worldwide and caused nearly 1 million deaths as of October 2020. The microorganism causing COVID-19 was named as Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2 or 2019-nCoV). The aim of this study was to investigate the interactions of twenty-three phytochemicals belonging to different flavonoid subgroups with the receptor binding domain (RBD) of the spike glycoprotein of 2019-nCoV, and cellular proteases [transmembrane serine protease 2 (TMPRSS2), cathepsin B and L (CatB/L)].

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As of June 2020, the coronavirus disease 19 (COVID-19) caused by the 2019 new type coronavirus (2019-nCoV) infected more than 7,000,000 people worldwide and caused the death of more than 400,000 people. The aim of this study was to investigate the molecular interactions between monoterpenoids and spike protein of 2019-nCoV together with the cellular proteases [transmembrane serine protease 2 (TMPRSS2), cathepsin B (CatB), and cathepsin L (CatL)]. As a result of the relative binding capacity index (RBCI) analysis, carvone was found to be the most effective molecule against all targets when binding energy and predicted (theoretical) IC50 data were evaluated together.

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The aim of this study is to analyze Fe, Mn, Cu, Zn, Co, Cd, Pb, and Ni contents of Cyclocybe cylindracea, Armillaria mellea, Bjerkandera adusta, Rheubarbariboletus armeniacus, Coprinellus disseminatus, C. micaceus, C. comatus, Inonotus hispidus, Lepista nuda, Leucoagaricus leucothites, Pleurotus ostreatus, Cerioporus squamosus, Schizophyllum commune, Scleroderma verrucosum, and Trametes trogii collected from the Ankara University Besevler 10th Year Campus (Turkey), an area where human settlement and traffic are intense.

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Article Synopsis
  • Mushrooms are great sources of nutrients but can also accumulate harmful metals like Cadmium (Cd), Cobalt (Co), and Lead (Pb) that pose health risks.
  • The study focused on measuring the metal contents in mushrooms from non-polluted areas in the eastern Black Sea region of Turkey, finding varying levels of metals in different species.
  • While some mushrooms had daily intake levels below safe limits, others showed high risk values for specific metals, particularly Cd, Co, and Pb, indicating a need for caution in consumption.
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Phenolic compounds are secondary metabolites that are found ubiquitously in plants, fruits, and vegetables. Many studies have shown that regular consumption of these compounds could have a positive effect on our health. The aim of this study was to compare the phytochemical contents of the water extracts from three different plants used as folk remedies in Turkey: , , and .

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This study aimed to evaluate the antioxidant and enzyme inhibitory activities of ethyl acetate, methanol, and water extracts of . In phosphomolybdenum assay, the methanol extract showed the highest activity (166.78 μmol TEs/g dry plant).

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This study aimed to investigate the chemical composition, antioxidant, and enzyme inhibitory activities of the essential oils of WILLD., L., and WILLD.

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Listeria monocytogenes is one of the major causes of infections in developing countries. In this study, chemical composition and anti-listerial effect of the essential oil of Zataria multiflora Boiss. alone and in combination with monolaurin were evaluated at different pH values (5, 6, and 7) and temperatures (5 ˚C and 30 ˚C).

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Origanum onites L., known as Turkish oregano, has great traditional, medicinal, preservative, and commercial importance. It is used for the treatment of several kinds of ailments, such as gastrointestinal disorders, diabetes, high cholesterol, leukemia, bronchitis, etc.

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Background/aim: To determine the phenolic acid levels and DNA damage protection potential of Capparis spinosa L. seed extract and to investigate the effect of the extract on cognitive impairment and oxidative stress in an Alzheimer disease mice model.

Materials And Methods: Thirty BALB/c mice divided into 5 groups (control, D-galactose, D-galactose + C.

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Background: The aim of this study was to determine phenolic acid composition and anti-parasitic effects of Peucedanum caucasicum, P. palimbioides, P. longibracteolatum and P.

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Context: Satureja (Lamiaceae) species are used as flavoring compounds in food, pharmaceutical, and cosmetic industries because of its sweetness and simple cultivation characteristics. They have traditionally been used as muscle pain relievers, tonic, and carminative agents to treat stomach and intestinal disorders such as cramps, nausea, indigestion, and diarrhea, due to their considerable phytochemical characteristics.

Objective: This review evaluates some information published since 1989 on Satureja genus from a systematic perspective in terms of its pharmacological and phytochemical characteristics.

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This study presents information on the antioxidant activity and heavy metal concentrations of Polyporus sulphureus, Macrolepiota procera, Lycoperdon perlatum and Gomphus clavatus mushrooms collected from the province of Mugla in the South-Aegean Region of Turkey. Antioxidant activities of mushroom samples were evaluated by four complementary tests. All tests showed L.

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