Biography
Hamdi TEMEL is a full professor since 2008 at Dicle University, Diyarbakır, TURKEY. He is dean of the Faculty of Pharmacy in Dicle University. His research areas are synthesis and characterization of biologically active compounds, antioxidant studies..etc. He has published more than 90 papers in reputed journals.
Abstract
Being the most indigenious economic plants of Anatolia, Achillea genus is widespread all over the world and in literature its species have been investigated to possess several biological activities including cytotoxicty. In the present study, cytotoxic activities of chloroform-methanol extracts (1:1) of underground and overground parts of four Achillea species (A. monocephala, A. nobilis, A. goniocephala and A. sintenisii ) on HeLa (Human Cervical Carcinoma Cell Line) cell lines at concentrations 50, 100 and 250 µg/mL were investigated. The cytotoxic activities were tested using a real-time analyzer (xCELLigence). The xCELLigence system was used with the disposable E-plate 96 for the measurements of solvent extracts, controls and medium. The impedance difference based measurements were caused by the cells attached to the E-Plate 96. Fortunately, all of the extracts showed very high cytotoxic activity depending on the concentration. The lower the extract concentration the lower the cytotoxic activity. The highest cytotoxic activities were shown by underground extracts of A. monocephala (-0.0142) and A. goniocephala (-0.0119).
Biography
Hamdi TEMEL is a full professor since 2008 at Dicle University, Diyarbakır, TURKEY. He is dean of the Faculty of Pharmacy in Dicle University. His research areas are synthesis and characterization of biologically active compounds, antioxidant studies..etc. He has published more than 90 papers in reputed journals.
Abstract
Achillea L. (Asteraceae) is a widely distributed medicinal plant and represented by 140 species in the world. Achillea L. species are commonly used in Turkish Traditional Medicine for the treatment of wounds, bleedings, headache, inflammation, pains, spasmodic diseases, flatulence and dyspepsia and hemorrhoids for years. In this study, methanol extracts of underground and overground parts of 4 different Achillea species (A. monocephala, A. nobilis, A. goniocephala and A. sintenisii ) were investigated in terms of their antioxidant activities by using DPPH free radical scavenging assay, ABTS radical cation decolorization assay, β-carotene lipit peroxidation test system and CUPRAC (copper reduction capacity) methods. For DPPH A. nobilis-underground (IC50: 12,23±0,24), for ABTS A. monocephala-underground (<10) and A. nobilis-underground (<10) and for CUPRAC A. nobilis underground (3.675±0,130) extracts were the most active extracts for the studied methods. And for β- carotene lipid peroxidation test system all of the studied species were low or moderately active. Moreover, total phenolic content (A. nobilis-underground (282,97±3,14 μg pyrocatechol equivalent/mg extract)) and total flavonoid content (A. nobilis-overground (24.77±0.71 μg quercetin eqivalent /mg extract)) of the studied species were investigated. According to the anticholinesterase activity results the highest activity in both butyrylcholinesterase and acetylcholinesterase enzyme inhibition was shown by overground extract of A. monocephala (39.73±1.51 and 19.60±0.44 respectively).