Dahili Tıp Bilimleri Bölümü

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Browsing Dahili Tıp Bilimleri Bölümü by Publisher "Elsevier"

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    MOLECULAR DIAGNOSIS IN PATIENTS WITH MONOGENIC DIABETES MELLITUS, AND DETECTION OF A NOVEL CANDIDATE GENE
    (Elsevier, 2023) Gökşen, Damla; Evin, Ferda; Işık, Esra; Özen, Samim; Atık, Tahir; Özkınay, Ferda; Akcan, Neşe; Özkan, Behzat; Büyükinan, Muammer; Özbek, Mehmet Nuri; Darcan, Şükran; Onay, Hüseyin
    Aim: We aimed to investigate molecular genetic basis of monogenic diabetes (DM) and novel responsible candidate genes with targeted Next Generation Sequencing (NGS) and Whole Exome Sequencing (WES). Methods: A hundred cases presenting with clinical findings and a family history of monogenic DM were included in the study. Molecular analysis was performed using an NGS panel including 14 genes. Following targeted NGS, WES was planned in cases in whom no variant was detected. Results: Thirty different disease-causing variants in seven different genes were detected in thirty-five (35%) cases with targeted NGS approach. Most common pathogenic variant was found in GCK gene in 25 (25%) cases. Four different variants were detected in 4 (4%) patients in ABCC8 gene. In 45 of 65 cases; WES analyses were done. A heterozygous c.2635C>T(p.Gln879Ter) variant was detected in IFIH1 gene in a patient with incidental hyperglycemia. In the segregation analysis affected mother was shown to be heterozygous for the same variant. Conclusion: Molecular etiology was determined in 35% cases with the NGS targeted panel. Seventeen novel variants in monogenic DM genes have been identified. A candidate gene determined by WES analysis in a case that could not be diagnosed with NGS panel in this study.
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    Citation - WoS: 13
    Citation - Scopus: 13
    Towards a better understanding of commonly used medicinal plants from Turkiye: Detailed phytochemical screening and biological activity studies of two Teucrium L. species with in vitro and in silico approach
    (Elsevier, 2023) Karahan, Selim; Ersoy, Ezgi; Süvari, Goncagül; Ercan, Selami; Özkan, Esra Eroğlu; Tuncay, Evin Aygün; Cantürk, Yeter Yeşil; Mataracı Kara, Emel; Zengin, Gökhan; Boğa, Mehmet
    Ethnopharmacological relevance: Since ancient times, Teucrium L. species have been among the most commonly used traditional medicinal plants mainly in the Mediterranean region. From tackling gastrointestinal problems to maintaining the healthy functioning of endocrine glands, and from treating malaria to severe dermatological disorders, Teucrium species are known to have extensive therapeutic applications. Teucrium polium L. and Teucrium parviflorum Schreb. are the two members of the genus that have been used in Turkish folk medicine for various medicinal purposes. Aim of the study: To determine the phytochemical compositions of the essential oils and ethanol extracts of Teucrium polium and Teucrium parviflorum collected from different locations in Turkiye along with the investigation of in vitro antioxidant, anticancer, antimicrobial activities, and both in vitro and in silico enzyme inhibitory activities of the extracts. Materials and methods: Ethanol extracts of Teucrium polium aerial parts and roots, and aerial parts of Teucrium parviflorum were prepared. Volatile profiling of the essential oils by GC-MS, phytochemical profiling of the ethanol extracts by LC-HRMS, antioxidant activity by DPPH radical scavenging, ABTS cation radical scavenging, CUPRAC, and metal chelating activity assays, anticholinesterase, antityrosinase, antiurease, activities by different enzyme inhibitory activity assays, anticancer activity by SRB cell viability assay, and antimicrobial activity against a standard panel of bacteria and fungi by the microbroth dilution technique. Molecular docking studies were performed by Autodock Vina (Ver. 1.1.2). Results: The studied extracts were found to be quite rich in various biologically important volatile and phenolic compounds. (-)-Epigallocatechin gallate, which is a molecule renowned for having great therapeutic potential, was the major compound of all extracts. Teucrium polium aerial parts extract was revealed as a great source for naringenin with 16327 ± 685.23 μg/g extract. All extracts exerted significant antioxidant activity by different methods. All extracts demonstrated antibutrylcholinesterase, antityrosinase, and antiurease activities by in vitro and in silico assays. Teucrium polium roots extract stood out with remarkable tyrosinase and urease inhibitory and cytotoxic activities. Conclusion: The obtained results from this multi-disciplinary study proves that the traditional use of these two Teucrium species is justified, and the mechanisms behind are enlightened.