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Full-Text Articles in Entire DC Network
Biological Control Of Vector Mosquitoes By Some Common Exotic Fish Predators, A. Ghosh, S. Mandal, I. Bhattacharjee, Goutam Chandra
Biological Control Of Vector Mosquitoes By Some Common Exotic Fish Predators, A. Ghosh, S. Mandal, I. Bhattacharjee, Goutam Chandra
Turkish Journal of Biology
Predation experiments using Cyprinus carpio Linnaeus (1758), Ctenopharyngodon idella (Valenciennes 1844), Oreochromis niloticus niloticus (Linnaeus 1758) and Clarias gariepinus (Burchell 1822) were conducted against fourth instar Anopheles stephensi Liston (1901) larvae and pupae at varying prey and predator densities. The relative prey consumption rates of the four fish species for An. stephensi larvae and pupae during 24-hour experiments under laboratory conditions were C. gariepinus > C. idella > C. carpio > O. n. niloticus. Predatory efficacy was positively related with prey density and inversely related with water volume (search area). A significant decrease in larval abundance in dipper samples was observed at 30 …
A Comment On The Results Reported By Çetin And Şen, Ari̇f Gönülol
A Comment On The Results Reported By Çetin And Şen, Ari̇f Gönülol
Turkish Journal of Botany
No abstract provided.
Mutation Analysis By The Use Of Temporal Temperature Gradient Gel Electrophoresis, Özgül M. Alper, Güven Lüleci̇, Lee-Jun C. Wong
Mutation Analysis By The Use Of Temporal Temperature Gradient Gel Electrophoresis, Özgül M. Alper, Güven Lüleci̇, Lee-Jun C. Wong
Turkish Journal of Medical Sciences
ALPER^1, Güven LÜLECİ^1, Lee-Jun C. WONG^2 ^1 Department of Medical Biology and Genetics, Faculty of Medicine, Akdeniz University, Antalya - Turkey ^2 Georgetown University Medical Center Institute for Human and Molecular Genetics, Washington, DC - USA
A Comparison Of Three High Performance Liquid Chromatographic (Hplc) Methods For Measurement Of Plasma Total Homocysteine, Emi̇n Özgür Akgül, Erdi̇nç Çakir, Ömer Özcan, Hali̇l Yaman, Cumhur Bi̇lgi̇, Mehmet Kemal Erbi̇l
A Comparison Of Three High Performance Liquid Chromatographic (Hplc) Methods For Measurement Of Plasma Total Homocysteine, Emi̇n Özgür Akgül, Erdi̇nç Çakir, Ömer Özcan, Hali̇l Yaman, Cumhur Bi̇lgi̇, Mehmet Kemal Erbi̇l
Turkish Journal of Medical Sciences
Homocysteine (tHcy) has been in routine use in many centers after this amino acid was reported as an independent risk factor for cardiovascular, cerebrovascular and peripheral vascular diseases. Many high-performance liquid chromatographic (HPLC) methods including a commercially available kit (Chromsystems) were reported for measuring tHcy in biologic samples. Although the commercial kits are believed to have higher precision, sensitivity and accuracy as well as practical and fast, it may cause high prices by increased test ordering. In this study we aimed to compare two different low-cost methods which had similar advantages with commercial kit as a reference method. In the …
Tsh Levels In Turkish Adults: Prevalences And Associations With Serum Lipids, Coronary Heart Disease And Metabolic Syndrome, Gülay Hergenç, Altan Onat, Si̇nan Albayrak, Ahmet Karabulut, Serdar Türkmen, İbrahi̇m Sari, Günay Can
Tsh Levels In Turkish Adults: Prevalences And Associations With Serum Lipids, Coronary Heart Disease And Metabolic Syndrome, Gülay Hergenç, Altan Onat, Si̇nan Albayrak, Ahmet Karabulut, Serdar Türkmen, İbrahi̇m Sari, Günay Can
Turkish Journal of Medical Sciences
Overt hypothyroidism is implicated in atherosclerosis through dyslipidemia, hypertension, and hyperhomoscysteinemia. Epidemiological data related to the role of thyroid hormones in the risk of coronary heart disease (CHD) and metabolic syndrome (MS) in Turkish adults are lacking. Thyroid stimulating hormone (TSH) was measured in the 2004 follow-up of the Turkish Adult Risk Factor Study, with the aim of investigating thyroid hormone status as a possible risk factor in CHD and MS in the population sample. To this end, a subgroup of the cohort (512 men and women: mean age 52 ± 11.4) in whom the prevalences for CHD, MS and …
Comparison Of Antibacterial Activities Of Selected Species Of Zingiberaceae Family And Some Synthetic Compounds, H. Chandarana, S. Baluja, Sumitra Chanda
Comparison Of Antibacterial Activities Of Selected Species Of Zingiberaceae Family And Some Synthetic Compounds, H. Chandarana, S. Baluja, Sumitra Chanda
Turkish Journal of Biology
This study describes the antibacterial activity of ginger (G), mangoginger (M) and turmeric (T) and mixtures thereof i.e. ginger and mangoginger (GM), ginger and turmeric (GT), turmeric and mangoginger (TM), and a mixture of peels (P) and 4 synthetic compounds (HC-1, HC-2, HC-3 and HC-4). Extracts of these compounds were studied on Escherichia coli, Bacillus subtilis and Staphylococcus aureus. Both aqueous (heated and unheated extracts) and organic solvents, 1, 4-Dioxan, N,N,dimethylformamide (DMF), were used for antibacterial assay. Growth inhibition was evaluated by the disc diffusion and agar ditch methods. The antibacterial activity of heated extracts was greater than that of …
Antimicrobial Effects Of Verbascum Georgicum Bentham Extract, Meryem Şengül, Hati̇ce Öğütçü, Ahmet Adigüzel, Fi̇kretti̇n Şahi̇n, Ayşe Aydan Kara, İsa Karaman, Medi̇ne Güllüce
Antimicrobial Effects Of Verbascum Georgicum Bentham Extract, Meryem Şengül, Hati̇ce Öğütçü, Ahmet Adigüzel, Fi̇kretti̇n Şahi̇n, Ayşe Aydan Kara, İsa Karaman, Medi̇ne Güllüce
Turkish Journal of Biology
The methanol extract of Verbascum georgicum Bentham (Scrophulariaceae) was investigated for its in-vitro antimicrobial properties. A total of 143 microorganisms belonging to 56 bacteria and 4 fungi and a yeast species were studied using the disk-diffusion method and microdilution assays. The results indicated that the methanol extract of V. geopgicum had an inhibitory effect on the growth of all Candida albicans isolates and 17 strains in 10 different species of bacteria, namely Bacillus amyloliquefaciens, B. subtilis, B. cereus, B. pumilus, B. megaterium, B. lentimorbus, B. licheniformis, Pseudomonas putida, P. syringae and Escherichia coli, at different concentrations ranging from 37.5 to …
Incompatibility Alleles Expressed In Pollen Of Turkish Hazelnut Cultivars, Veli̇ Erdoğan, Shawn A. Mehlenbacher, A. İlhami̇ Köksal, Haydar Kurt
Incompatibility Alleles Expressed In Pollen Of Turkish Hazelnut Cultivars, Veli̇ Erdoğan, Shawn A. Mehlenbacher, A. İlhami̇ Köksal, Haydar Kurt
Turkish Journal of Biology
Sphorophytic pollen-stigma incompatibility is a characteristic of the genus Corylus. Incompatibility alleles expressed in the pollen of Turkish hazelnut cultivars were identified. Cultivars were selected from the field collection at Giresun, and were used as the pollen parents. Tester plants, whose S-alleles were known, were located in Ankara and Corvallis. Compatible crosses produced masses of long and parallel tubes while incompatible crosses produced very short tubes that often curved or ended with a pronounced bulb. The incompatibility alleles S_2, S_5, S_8, S_{10}, S_{12}, S_{21} and S_{24} were identified in the pollen of Turkish cultivars. Pollen of Palaz and Yuvarlak Badem …
An Sem Study Of The Sporulation Process Of Pandora Neoaphidis And Neozygites Fresenii, Özlem Kalkar
An Sem Study Of The Sporulation Process Of Pandora Neoaphidis And Neozygites Fresenii, Özlem Kalkar
Turkish Journal of Biology
The objective of this study was to investigate the development of fungal pathogens in aphid hosts and identify structures characteristic of each fungal species. Aphids infected by Pandora neoaphidis and Neozygites fresenii were incubated for different time periods and examined by SEM. In P. neoaphidis, hyphal bodies concentrated in clumps beneath the cuticle and these formed rosette patterns consisting of a central structure, the developing cystidium, surrounded by developing conidiophores. Rhizoids were the first structure emerging from the P. neoaphidis-killed aphid. Primary spores were formed after 6 h and secondary spores after 10 h of incubation. In N. fresenii, the …
High Quality Dna Isolation Method For Chickpea Genotypes, Hasi̇be Ci̇ngi̇lli̇, Abdulkadi̇r Akçi̇n
High Quality Dna Isolation Method For Chickpea Genotypes, Hasi̇be Ci̇ngi̇lli̇, Abdulkadi̇r Akçi̇n
Turkish Journal of Biology
In chickpea breeding genetic studies of individual plants need to be evaluated at the DNA level using molecular markers. A simple and reliable DNA extraction method is a prerequisite. This small-scale method is cetyltrimethylammonium bromide (CTAB)-based and extracts DNA from 1 to 3 folded young leaves processed in a 1.5 ml tube with 0.5 ml of extraction buffer and homogenized using an electric drill. Compared with the micro-prep method the improved mini-prep CTAB method is highly efficient and much cheaper in terms of time, chemical use and labor input. About 49 samples per day can easily be processed by one …
Pb^{2+} Biosorption By Pretreated Fungal Biomass, Ahmet Çabuk, Semra İlhan, Cansu Fi̇li̇k, Fi̇gen Çalişkan
Pb^{2+} Biosorption By Pretreated Fungal Biomass, Ahmet Çabuk, Semra İlhan, Cansu Fi̇li̇k, Fi̇gen Çalişkan
Turkish Journal of Biology
The effect of pretreatment on the Pb^{2+} biosorption capacity of fungal biomasses, Aspergillus versicolor, Metarrhizium anisopliae var. anisopliae, and Penicillium verrucosum, was investigated. For this purpose, the biomasses were subjected to physical treatments such as heat and autoclaving, and chemical treatments such as sodium hydroxide, formaldehyde, gluteraldehyde, acetic acid, hydrogen peroxide, commercial laundry detergent, orthophosphoric acid and dimethyl sulfoxide. Dimethyl sulfoxide, hydrogen peroxide and gluteraldehyde increased biosorption of Pb^{2+} in comparison with the A. versicolor live biomass. M. anisopliae var. anisopliae biomass pretreated with hydrogen peroxide, gluteraldehyde, commercial laundry detergent, dimethyl sulfoxide and formaldehyde significantly improved biosorption of Pb^{2+} in …
Competitive Abilities Of The Entomopathogenic Nematodes Steinernema Feltiae And Heterorhabditis Bacteriophora In The Same Host At Different Temperatures, Hi̇lal Aydin, Alper Susurluk
Competitive Abilities Of The Entomopathogenic Nematodes Steinernema Feltiae And Heterorhabditis Bacteriophora In The Same Host At Different Temperatures, Hi̇lal Aydin, Alper Susurluk
Turkish Journal of Biology
The effectiveness of Turkish strains of the entomopathogenic nematodes Steinernema feltiae and Heterorhabditis bacteriophora on the last instar larvae of Tenebrio molitor were investigated. Mortality rates of T. molitor larvae caused by each nematode species alone (experiment I) were determined. Then, with the same method, the effectiveness of each species over the other in competition was examined (experiment II). Both experiments were conducted in sterilesand at 12, 18 and 25 °C for 5 days. While in experiment I the efficiency of the species was determined to be 52.5% for H. bacteriophora and 85% for S. feltiae at 12 °C, 93.5% …
Antibacterial Activity Of Some Selected Indian Medicinal Flora, Rathish Nair, Tamanna Kalariya, Sumitra Chanda
Antibacterial Activity Of Some Selected Indian Medicinal Flora, Rathish Nair, Tamanna Kalariya, Sumitra Chanda
Turkish Journal of Biology
Nine plants were screened for potential antibacterial activity. In evaluating antibacterial activity both aqueous and organic solvents were used. The plants screened were Sapindus emarginatus, Hibiscus rosa-sinensis, Mirabilis jalapa, Rheo discolor, Nyctanthes arbortristis, Colocasia esculenta, Gracilaria corticata, Dictyota spps., and Pulicaria wightiana. Antibacterial activity was tested against 6 bacterial strains, Pseudomonas testosteroni, Staphylococcus epidermidis, Klebsiella pneumoniae, Bacillus subtilis, Proteus morganii, and Micrococcus flavus. Two methods, Agar disk diffusion and Agar ditch diffusion, were used to study the antibacterial activity of all these plants. Ps. testosteroni and K. pneumoniae were the most resistant bacterial strains. S. emarginatus showed strong activity against …
Emerging Vector-Borne Diseases In A Changing Environment, Nurdan Özer
Emerging Vector-Borne Diseases In A Changing Environment, Nurdan Özer
Turkish Journal of Biology
Vector-borne infectious diseases are emerging or resurging as a result of changes in public health policy, demographic and societal changes, insecticide and drug resistance, shift in emphasis from prevention to emergency response, genetic changes in pathogens in the last two decades of the twentieth century. Climate changes also can influence the emergence and reemergence of these diseases which are malaria, dengue, yellow fever, plague, filariasis, louse-borne typhus, lyme disease, trypanosomiasis, leishmaniasis and viral diseases. West Nile virus is just the latest example of this type of invasion by exotic virus. This paper will provide an overview of the distribution, reasons …
Antimicrobial Effects Of Ocimum Basilicum (Labiatae) Extract, Ahmet Adigüzel, Medi̇ne Güllüce, Meryem Şengül, Hati̇ce Öğütçü, Fi̇kretti̇n Şahi̇n, İsa Karaman
Antimicrobial Effects Of Ocimum Basilicum (Labiatae) Extract, Ahmet Adigüzel, Medi̇ne Güllüce, Meryem Şengül, Hati̇ce Öğütçü, Fi̇kretti̇n Şahi̇n, İsa Karaman
Turkish Journal of Biology
Ethanol, methanol, and hexane extracts from Ocimum basilicum Labiatae (sweet basil) were investigated for their invitro antimicrobial properties. A total of 146 microbial organisms belonging to 55 bacteria, and four fungi, and a yeast species were studied using a disk-diffusion and minimal inhibition concentration (MIC) method. The result showed that none of the three extracts tested have antifungal activities, but anticandidal and antibacterial effects. Both the hexane and methanol extracts, but not the ethanol extracts, inhibited three isolates out of 23 strains of Candida albicans studied. All three extract of O. basilicum were different in terms of their antibacterial activities. …
Effect Of \Alpha-Keto Acids Against H_2o_2- And Nan_3-Induced Mutagenesis In Different Strains Of Salmonella Typhimurium, Emi̇ne Öksüzoğlu
Effect Of \Alpha-Keto Acids Against H_2o_2- And Nan_3-Induced Mutagenesis In Different Strains Of Salmonella Typhimurium, Emi̇ne Öksüzoğlu
Turkish Journal of Biology
The protective effects of \alpha-keto acids on the mutagenicity of H_2O_2 and NaN_3 was investigated in Salmonella typhimurium TA 98, TA 100, TA 102. H_2O_2 (340 µg/plate) was mutagenic to the strains TA 98 and TA 102 while NaN_3 (1.5 µg/plate) was mutagenic only to TA100. The extents of protective effect of pyruvate (220-440 µg/plate) and \alpha-keto glutarate (335-600 µg/plate) against H_2O_2 were observed to be 37%- 65% in TA 98 and TA 102. \alpha-keto acids were ineffective against NaN_3 induced mutagenicity in TA 100. H_2O_2 (340 µg/plate), in the presence of NaN_3 (1.5 µg/plate) and \alpha-keto acids (330-500 µg/plate), …
Identification Of Alkaliphilic Bacillus Species Isolated From Lake Van And Its Surroundings By Computerized Analysis Of Extracellular Protein Profiles, İsmet Berber, Elçi̇n Yeni̇dünya
Identification Of Alkaliphilic Bacillus Species Isolated From Lake Van And Its Surroundings By Computerized Analysis Of Extracellular Protein Profiles, İsmet Berber, Elçi̇n Yeni̇dünya
Turkish Journal of Biology
Five reference Bacillus species and 17 native alkaliphilic Bacillus strains, isolated from the water of Lake Van and the soil surrounding it, were identified using phenotypic characteristics and extracellular protein profiles by the method of sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). According to the phenotypic characteristics, all the native isolates were Gram-positive, aerobic, endospore-forming, motile, facultatively alkaliphilic Bacillus spp. It was also found that the native alkaliphilic Bacillus isolates were distinguished phenotypically from other Bacillus species. A numerical analysis based on the resulting extracellular protein profiles revealed 5 distinct clusters: native isolates and B. megaterium formed 4 clusters that varied …
A Gene Expression Study Of The Tgf-\Beta Signaling Pathway Components In Differentiating Pc12 Cells, Işil Aksan Kurnaz
A Gene Expression Study Of The Tgf-\Beta Signaling Pathway Components In Differentiating Pc12 Cells, Işil Aksan Kurnaz
Turkish Journal of Biology
The neuronal differentiation process has been studied in great detail from many aspects. In the PC12 system, NGF was found to induce neuronal differentiation as measured by neurite extensions and neuronal marker expression. This effect was seen to be mainly conducted through the Ras/MAPK pathway; however, additional pathways are suspected to play a significant role in this cellular response. One such pathway is Smad signaling - NGF was previously reported to induce the expression of the TGF-\beta signal, although the physiological relevance of this was not completely understood. In this study, we analyzed the expression profiles of several TGF-\beta pathway …