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Articles 73471 - 73495 of 73495
Full-Text Articles in Entire DC Network
Polarization Of Marketing Theory: Fueling The Quest For Scientific Marketing Truth, Wael Kortam Prof.
Polarization Of Marketing Theory: Fueling The Quest For Scientific Marketing Truth, Wael Kortam Prof.
Business Administration
No abstract provided.
Evaluation Of Nested Pcr Method For Diagnosis Of Meningitis Due To Neisseria Meningitidis And Haemophilus Influenzae, Zahra Hojjati Bonab, Safar Farajnia, Reza Ghotaslou, Elhameh Nikkhah
Evaluation Of Nested Pcr Method For Diagnosis Of Meningitis Due To Neisseria Meningitidis And Haemophilus Influenzae, Zahra Hojjati Bonab, Safar Farajnia, Reza Ghotaslou, Elhameh Nikkhah
Turkish Journal of Biology
Meningitis due to Neisseria meningitidis and Haemophilus influenzae is a common infectious disease among infants and children that can be fatal in the absence of rapid and proper diagnosis and treatment. Therefore, a rapid and sensitive method for diagnosis is a high priority. The aim of this study was to compare the performance of culture, conventional polymerase chain reaction (PCR), and nested PCR methods for diagnosis of meningitis caused by N. meningitidis and H. influenzae. A total of 106 cerebrospinal fluid samples were collected from infants and children suspected of having meningitis. A portion of these samples were used for …
Evaluation Of Antiinflammatory And Antinociceptive Effects Of Some Juniperus Species Growing In Turkey, Ni̇lüfer Orhan, Esra Akkol, Fatma Ergun
Evaluation Of Antiinflammatory And Antinociceptive Effects Of Some Juniperus Species Growing In Turkey, Ni̇lüfer Orhan, Esra Akkol, Fatma Ergun
Turkish Journal of Biology
Different parts and products of Juniperus species have been used as folk medicine for various infectious diseases, rheumatism, and wounds in Turkey. In order to evaluate this traditional usage, antiinflammatory and antinociceptive activities of leaf and berry extracts of 3 Juniperus species (J. excelsa, J. foetidissima, and J. sabina) were investigated. Additionally, antiinflammatory and antinociceptive activities of subextracts of J. oxycedrus subsp. oxycedrus (Joso) berries and leaves were evaluated. The p-benzoquinone-induced writhing test for antinociceptive activity and the carrageenan-induced hind paw edema model for antiinflammatory activity in mice were employed. Ethanol extract prepared from berries of J. foetidissima provided a …
Usefulness Of Ca 15-3 For Breast Or Ovarian Primary Sites In Metastatic Adenocarcinoma Of Pleural Fluid, Serpi̇l Oğuztüzün, Murat Kiliç, Ni̇sa Tandogan, Lati̇f Öztürk
Usefulness Of Ca 15-3 For Breast Or Ovarian Primary Sites In Metastatic Adenocarcinoma Of Pleural Fluid, Serpi̇l Oğuztüzün, Murat Kiliç, Ni̇sa Tandogan, Lati̇f Öztürk
Turkish Journal of Biology
This study was conducted to evaluate the diagnostic value of CA 15-3, mammaglobin, c-erbB-2, estrogen receptor (ER), progesterone receptor (PR), CK 20, and CA 125 for detecting metastatic breast and ovarian carcinoma in pleural fluids. The material under study consisted of 26 pleural effusions from invasive breast and ovarian cancer patients from the Hannover Cytopathology Institute. Expressions of these markers were studied using immunocytochemistry. All of the breast cancer cases studied showed a positive reaction with CA 15-3, while only 36% with mammaglobin, 21% with c-erbB-2, 36% with ER, and 7% with PR were positive. The sensitivities of CK 20, …
Karyology Of The Scorzonera L. (Asteraceae) Taxa From Turkey, Esra Marti̇n, Özlem Çeti̇n, Serdar Makbul, Ahmet Duran, Meryem Şeker, Derya Boduroğlu, Bahri̇ye Eşmekaya
Karyology Of The Scorzonera L. (Asteraceae) Taxa From Turkey, Esra Marti̇n, Özlem Çeti̇n, Serdar Makbul, Ahmet Duran, Meryem Şeker, Derya Boduroğlu, Bahri̇ye Eşmekaya
Turkish Journal of Biology
In this study, the karyotypes of 13 taxa of the tribe Lactuceae growing naturally in Turkey were examined. Of the species of the genus Scorzonera L. (Asteraceae), S. laciniata L. subsp. laciniata, S. cana (C.A.Mey.) Hoffm. var. jacquiniana (W.Koch) Chamb., S. suberosa C.Koch subsp. suberosa, S. mollis M.Bieb. subsp. mollis, S. papposa DC., S. lacera Boiss. & Bal., S. elata Boiss., and S. parviflora Jacq. have a diploid chromosome number of 2n = 14. For S. phaeopappa (Boiss.) Boiss., this number is 2n = 28, and for S. eriophora DC., S. pseudolanata Grossh., S. tomentosa L., and S. kotschyi Boiss., …
Hepatoprotective Effect Of Vitamins C And E Against Gasoline Vapor-Induced Liver Injury In Male Rats, Friday Effiong Uboh, Patrick Ekong Ebong, Henry Dan Akpan, Itoro Friday Usoh
Hepatoprotective Effect Of Vitamins C And E Against Gasoline Vapor-Induced Liver Injury In Male Rats, Friday Effiong Uboh, Patrick Ekong Ebong, Henry Dan Akpan, Itoro Friday Usoh
Turkish Journal of Biology
The protective effect of vitamins C and E against gasoline vapor-induced liver injury was investigated in rats. Liver injury was assessed from the activities of liver function diagnostic indices including serum alanine aminotransferase (ALT), aspartate aminotransferase (AST), gamma glutamyl transferase (\gamma-GT), alkaline phosphatase (ALP) activities, total serum protein (TSP), albumin concentrations, and the histological architectures of the liver tissues of the experimental animals. The results showed that gasoline vapors caused a significant (P = 0.05) higher than that of vitamin C. The results of our study suggest a protective effect of vitamin C and vitamin E against gasoline vapor-induced liver …
Antimicrobial And Antiviral Effects Of Essential Oils From Selected Umbelliferae And Labiatae Plants And Individual Essential Oil Components, İlkay Erdoğan Orhan, Berri̇n Özçeli̇k, Murat Kartal, Yüksel Kan
Antimicrobial And Antiviral Effects Of Essential Oils From Selected Umbelliferae And Labiatae Plants And Individual Essential Oil Components, İlkay Erdoğan Orhan, Berri̇n Özçeli̇k, Murat Kartal, Yüksel Kan
Turkish Journal of Biology
The essential oils obtained from Anethum graveolens, Foeniculum vulgare collected at fully-mature and flowering stages, Mentha piperita, Mentha spicata, Lavandula officinalis, Ocimum basilicum (green- and purple-leaf varieties), Origanum onites, O. vulgare, O. munitiflorum, O. majorana, Rosmarinus officinalis, Salvia officinalis, and Satureja cuneifolia, as well as the widely encountered components in essential oils (\gamma-terpinene, 4-allylanisole, (-)-carvone, dihydrocarvone, D-limonene, (-)-phencone, cuminyl alcohol, cuminyl aldehyde, cuminol, trans-anethole, camphene, isoborneol, (-)-borneol, L-bornyl acetate, 2-decanol, 2-heptanol, methylheptane, farnesol, nerol, isopulegol, citral, citronellal, citronellol, geraniol, geranyl ester, linalool, linalyl oxide, linalyl ester, \alpha-pinene, \beta-pinene, piperitone, (-)-menthol, isomenthone, carvacrol, thymol, vanillin, and eugenol), were screened for their …
Poly-3-Hydroxybutyrate-Producing Extreme Halophilic Archaeon: Haloferax Sp. Ma10 Isolated From Çamaltı Saltern, İzmir, Ebru Teki̇n, Mustafa Ateş, Özge Kahraman
Poly-3-Hydroxybutyrate-Producing Extreme Halophilic Archaeon: Haloferax Sp. Ma10 Isolated From Çamaltı Saltern, İzmir, Ebru Teki̇n, Mustafa Ateş, Özge Kahraman
Turkish Journal of Biology
İzmir Çamaltı Saltern is the biggest seawater-based saltern in Turkey. To date, it has not been investigated extensively for the existence of poly-3-hydroxybutyrate (PHB)-producing species. In this study, 14 extremely halophilic archaea were isolated, purified, and screened for PHB production. One strain was then selected as the best PHB producer, further cultivated in different PHB media, and compared with a positive control, Haloferax mediterranei ATCC 33500. PHB was extracted from cells and measured with a spectrophotometer, and then the amount of PHB was measured through comparison with standard PHB. The detected high PHB yield was 6.53% of the dry cell …
Biofilm Formation Comparison Of The Sanipacking® Cooling Tower Fill Material Against Standard Polypropylene Fill Material In A Recirculating Model Water System, İrfan Türetgen, Nazmi̇ye Özlem Şanli Yürüdü, Imke Norden
Biofilm Formation Comparison Of The Sanipacking® Cooling Tower Fill Material Against Standard Polypropylene Fill Material In A Recirculating Model Water System, İrfan Türetgen, Nazmi̇ye Özlem Şanli Yürüdü, Imke Norden
Turkish Journal of Biology
Cooling towers are heat rejection systems that are used in some industrial applications, and they have the potential to develop infectious concentrations of Legionella pneumophila. SANIPACKING® cooling tower fill material and standard polypropylene fill material were compared in terms of biofilm formation potential and anti-Legionella activity within a 4-month period using a laboratory-scale recirculating water system. The recirculating water system was experimentally infected with a L. pneumophila standard strain (ATCC 33152) suspension and operated continuously until all experiments had been completed. Results showed that the L. pneumophila rapidly multiplied in a short time during the study within the model system …
Genotoxic And Mutagenic Effects Of Aqueous Extract From Aerial Parts Of Achillea Teretifolia, Di̇lek Akyil, Sedat Oktay, Recep Li̇man, Yasi̇n Eren, Muhsi̇n Konuk
Genotoxic And Mutagenic Effects Of Aqueous Extract From Aerial Parts Of Achillea Teretifolia, Di̇lek Akyil, Sedat Oktay, Recep Li̇man, Yasi̇n Eren, Muhsi̇n Konuk
Turkish Journal of Biology
Genotoxic and mutagenic effects of aqueous extract from aerial parts of Achillea teretifolia (At-ext) were investigated using both Allium cepa root meristematic cells and a short-term mutation assay in Salmonella typhimurium with TA98 and TA100 strains in the presence or absence of S9 mix, respectively. In the Allium tests, EC_{50} value was determined as 50 g/L, and 0.5 × EC_{50}, EC_{50}, and 2 × EC_{50} concentrations of At-ext were applied to onion tuber roots. Methyl methane sulfonate (MMS, 10 ppm) and distilled water were used as positive and negative controls, respectively. The mitotic index (MI) increased in all concentrations in …
Antioxidant Enzymes And Gst Activity In Natural Populations Of Holandriana Holandrii From The Bosna River, Jelena Vrankovic, Svetlana Labus-Blagojevic, Bela Csanyi, Jarmila Makovinska, Olga Cvetkovic, Zoran Gacic, Dusko Blagojevic, Momir Paunovic
Antioxidant Enzymes And Gst Activity In Natural Populations Of Holandriana Holandrii From The Bosna River, Jelena Vrankovic, Svetlana Labus-Blagojevic, Bela Csanyi, Jarmila Makovinska, Olga Cvetkovic, Zoran Gacic, Dusko Blagojevic, Momir Paunovic
Turkish Journal of Biology
Specimens of the freshwater snail Holandriana holandrii affected by different levels of contamination were collected from 3 sites within the Bosna River Basin, i.e. Visoko, Doboj, and Modrica. The activities of antioxidant enzymes such as superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), glutathione reductase (GR), and glutathione-S-transferase (GST) were investigated in order to understand their variation with respect to the pollution status of the sampling locations. The results revealed a significant increase in CAT, GPx, and GST activities in the snails collected from Modrica, suggesting that the animals at this location are exposed to a higher level of oxidative …
Molecular Characterization Of Phylogeneticrelationships In Fritillaria Species Inferred From Chloroplast Trnl-Trnf Sequences, Mi̇ne Türktaş, Meral Aslay, Erdal Kaya, Fahri̇ye Ertuğrul
Molecular Characterization Of Phylogeneticrelationships In Fritillaria Species Inferred From Chloroplast Trnl-Trnf Sequences, Mi̇ne Türktaş, Meral Aslay, Erdal Kaya, Fahri̇ye Ertuğrul
Turkish Journal of Biology
The genus Fritillaria embraces about 165 taxa in the family Liliaceae. In this study, the molecular phylogenetic relationships between 10 Fritillaria taxa were presented. Fritillaria spp. were collected from their natural habitats, and specimens with different morphological features were obtained via selective breeding. Specimens with the desired characters were presented as promising candidate cultivars for ornamental use. Phylogenetic analysis was based on DNA sequences of the chloroplast trnL-trnF region. The phylogeny was constructed using the neighbor joining, maximum parsimony, maximum likelihood, and Bayesian inference methods. The data showed that the examined Fritillaria spp. were evidently diverged into 2 Fritillaria subgenera. …
Antihyperglycemic, Antioxidant And Cytotoxic Activities Of Alocasia Macrorrhizos (Linn.) Rhizomes Extract, Md Masudur Rahman, Md. Aslam Hossain, Saiful Alam Siddique, Kaishar Parvej Biplab, Md. Helal Uddin
Antihyperglycemic, Antioxidant And Cytotoxic Activities Of Alocasia Macrorrhizos (Linn.) Rhizomes Extract, Md Masudur Rahman, Md. Aslam Hossain, Saiful Alam Siddique, Kaishar Parvej Biplab, Md. Helal Uddin
Turkish Journal of Biology
Alocasia macrorrhizos (L.) (Araceae), a coarse and erect plant that is widely cultivated to be eaten as a vegetable throughout Bangladesh, has been reported to possess a number of medicinal properties. The antihyperglycemic, antioxidant, and cytotoxic effects of the methanol extract of A. macrorrhizos rhizomes were investigated. The extract was given at a single dose (250 and 500 mg/kg) in alloxan-induced hyperglycemic mice. The extract at 500 mg/kg produced a significant (P < 0.05) decrease in the blood glucose level (55.49%) at 8 h of treatment when compared with the control and was comparable with the reference drug, metformin. The extract was also subjected to antioxidant potentiality and brine shrimp lethality bioassays. The IC_{50} value of the extract was 693.0 \mug/mL and the LC_{50} was 188.14 \mug/mL.
Genetic Characterization Of Turkish Bread Wheat Landraces Based On Microsatellite Markers And Morphological Characters, Özlem Ateş Sönmezoğlu, Betül Bozmaz, Ahmet Yildirim, Nejdet Kandemi̇r, Nevzat Aydin
Genetic Characterization Of Turkish Bread Wheat Landraces Based On Microsatellite Markers And Morphological Characters, Özlem Ateş Sönmezoğlu, Betül Bozmaz, Ahmet Yildirim, Nejdet Kandemi̇r, Nevzat Aydin
Turkish Journal of Biology
Wheat landraces could be unique sources of favorable genes for agronomic traits like yield and insect, pest, and disease resistances, as well as quality characteristics that are important for breeding programs. Molecular marker systems offer great opportunities to characterize wheat accessions, which in particular are not morphologically identifiable. In this study, 20 bread wheat landraces collected from different regions of Turkey were characterized by using microsatellite markers (SSRs) and morphological characters. Seventeen morphological characters were used. Fifteen SSR primers were prescreened and the 7 most polymorphic primers were employed in characterization. The most polymorphic SSR loci were Xgwm 95 and …
Assessment Of Antioxidant, Antibacterial, Antimycobacterial, And Antifungal Activities Of Some Plants Used As Folk Remedies In Turkey Against Dermatophytes And Yeast-Like Fungi, Di̇dem Deli̇orman Orhan, Berri̇n Özçeli̇k, Sanem Hoşbaş, Meci̇t Vural
Assessment Of Antioxidant, Antibacterial, Antimycobacterial, And Antifungal Activities Of Some Plants Used As Folk Remedies In Turkey Against Dermatophytes And Yeast-Like Fungi, Di̇dem Deli̇orman Orhan, Berri̇n Özçeli̇k, Sanem Hoşbaş, Meci̇t Vural
Turkish Journal of Biology
Twenty-seven aqueous extracts obtained from 21 plants used in the treatment of respiratory tract infections as folk remedies in Turkey were investigated for their relative total phenolic contents and antioxidant, antibacterial, antimycobacterial, and antifungal activities. Antibacterial and antifungal activities against dermatophytes and yeast-like fungi were determined using the microdilution method. Antibacterial activity of all extracts was more pronounced against gram-positive bacteria than against gram-negative bacteria. These extracts also exhibited higher antifungal activity against Candida krusei than ketaconazole. Six extracts displayed antidermatophytic activity against Epidermophyton floccosum, while only 3 extracts were highly active against Trichophyton rubrum. The extracts showed strong activity …