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Search Results: 1 - 10 of 149748 matches for " H. Sancak "
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Effect of Ripening Time on Mineral Contents of Herby Cheese
H. Durmaz,Z. Tarakci,E. Sagun,H. Sancak
Journal of Animal and Veterinary Advances , 2012,
Abstract: Herby cheese is a salted traditional cheese manufactured in the Eastern and South-eastern of Turkey. Its name, herby, comes from adding herb in cheese. The aim of this study was to assess the changes in the mineral contents and some chemical parameters in herby cheese during 90 days of ripening. The total solids, ash, salt, Na, Cu, Fe, Mn contents and pH values increased significantly (p<0.05), while Ca, Mg and Zn contents decreased significantly (p<0.05) during ripening. P, Co, Cr, Ni and Cd contents of the cheeses were not significantly (p>0.05) altered during ripening. The results indicated that the mineral of herby cheese showed a very variable behaviour during ripening due to likely manufacturing technology.
Serum Levels of Antioxidant Vitamins (Vitamin A, C, E) and Magnesium in Children With Allergic Rhinitis
Trakya Universitesi Tip Fakultesi Dergisi , 2010,
Abstract: Objectives: The aim of the study is to measure the levels of antioxidant vitamins and magnesium during allergic rhinitis attacks.Patients and Methods: Thirty five children who have sensitivity for house dust and mite with mild/ moderate persistent allergic rhinitis without any other allergic diseases were considered as the study group, and 35 healthy children as the control group. The patient group was classified according to the symptom scoring system. Venous blood samples were obtained before breakfast in each group to determine serum vitamin A, C, E and magnesium levels.Results: Serum vitamin A level was significantly lower in the study group compared with the control group. However, there was no statistically significant difference between the groups in terms of serum vitamin C, E and magnesium levels.Conclusion: This study showed that vitamin A consumption increases to repair mucosal epithelium which is damaged by inflammation and to prevent the oxidative damage in allergic rhinitis. This result may imply new therapeutic approaches.
Ultrastructural Characteristics of Sheep and Horse Mesenchymal Stem Cells (MSCs)  [PDF]
Asuman Ozen, Irem Gul Sancak, Brigitte Von Rechenberg, Sabine Koch
Microscopy Research (MR) , 2013, DOI: 10.4236/mr.2013.13004

In the present study, the morphological and ultrastructural characteristics of mesenchymal stem cells (MSCs) induced towards osteogenic, adipogenic, and chondrogenic lineages were investigated. The main objective of this paper was to focus on the differentiation capacity of ovine [oMSCs] and equine MSCs [eMSCs]. Bone marrow [BM] MSCs were isolated from ovine and equine patients, expanded in monolayer culture and induced into osteogenic, adipogenic and chondrogenic differentiation. For chondrogenic differentiation, cells were cultured in micromass culture. Also, their ultrastructural phenotypes were studied by transmission electron microscopy [TEM]. This study was aimed to provide an indepth morphological description of BM-derived ovine and equine MSCs induced towards three lineages, it demonstrated that TEM analysis is useful in elucidating detailed structural information.

Serum and Ascitic Fluid Superoxide Dismutase and Malondialdehyde Levels in Patients with Cirrhosis
Seren Ozenirler,Banu Sancak,Ugur Coskun
Biomarker Insights , 2008,
Abstract: Serum and ascitic fluid superoxide dismutase (SOD) and malondialdehyde (MDA) levels were measured in 43 patients with cirrhosis and in a 10 healthy control group. Compensated cirrhotic patients had no clinically detectable ascites, but decompensated patients had massive ascites. Cirrhotic patients were divided into three groups: patients with compensated cirrhosis (n = 16), patients with decompensated cirrhosis with Spontaneous bacterial peritonitis (SBP) (n = 14), and patients with decompensated cirrhosis without SBP (n = 13). All cirrhotic patients in the experimental group had significantly higher serum SOD (p < 0.001) and MDA levels (p < 0.01) than those in the control group. There were no significant differences with respect to serum SOD and MDA levels among the three different groups of patients. There was no remarkable difference in ascitic fluid SOD and MDA levels between decompensated cirrhotic patients with and without SBP (p > 0.05). These results suggest that the increase in serum SOD and MDA levels are not related to the presence of SBP and the status of liver cirrhosis. To sum up, clarifying the impact of increased serum SOD and MDA levels in cirrhotic patients needs further investigation.
A comparison of PCR detection of Meca with oxacillin disk susceptibility testing in different media and sceptor automated system for both Staphylococcus aureus and coagulase-negative staphylococci isolates
Ercis S,Sancak B,Hascelik G
Indian Journal of Medical Microbiology , 2008,
Abstract: Purpose: To evaluate three methods for 406 isolates of Staphylococcus aureus and coagulase-negative staphylococci (CNS) for the detection of methicillin resistance (MR) using National Committee for Clinical Laboratory Standards (NCCLS) new interpretive criteria. Methods: We used polymerase chain reaction (PCR) as a gold standard method to evaluate three methods [disk diffusion with Mueller-Hinton agar (MHA) and mannitol salt agar (MSA) and Sceptor system (Becton Dickinson, USA)] for the detection of mecA gene. The isolates that were methicillin-resistant with any of the three tests were evaluated further for MR by E-test. Results: MHA, MSA and Sceptor showed sensitivities of 100, 100 and 99% for S. aureus and 100, 82.6 and 72.1% for CNS, respectively. The specificities of the same methods were found as 100, 90.1 and 99.3% for S. aureus and 79.2, 95.8 and 97.2% for CNS, respectively. E-test showed 100% sensitivity for both S. aureus and CNS. Forty-eight CNS and 16 S. aureus isolates, which presented discrepancies with the three phenotypic methods (MHA disk diffusion method, MSA disk diffusion method and Sceptor), were correctly classified as resistant/susceptible with the E-test when compared with PCR. Only five CNS isolates, which were mecA-negative with PCR were resistant with E-test. Analysis of 248 S. aureus revealed that MHA is superior to other phenotype-based susceptibility testing methods in detecting MR. When we examined the results of 158 CNS, none of the three methods proved efficient in detecting MR. Conclusions: We conclude that although the accuracy of the MHA disk diffusion test for the detection of MR approaches the accuracy of PCR for S. aureus isolates, the need for easy and reliable methods of detecting MR in CNS still remains.
Morphological characterization of the venom apparatus in the wolf spider Lycosa singoriensis (Laxmann, 1770)
Yigit, N;Bayram, A;Danisman, T;Sancak, Z;Tel, MG;
Journal of Venomous Animals and Toxins including Tropical Diseases , 2009, DOI: 10.1590/S1678-91992009000100013
Abstract: the wolf spider lycosa singoriensis (laxmann, 1770) (lycosidae: araneae) is distributed throughout central and eastern europe, including russia, kazakhistan and turkey. this study describes the venom apparatus morphology of l. singoriensis through scanning electron microscopy (sem). its structure follows the general architecture observed in other spiders. generally, a venom apparatus is composed by a pair of venom glands and chelicerae. l. singoriensis chelicerae are robust and consist of a stout basis and a movable apical segment (fang). the fang rests in a groove on the basal segment that is covered by different types of hair. l. singoriensis venom glands present equal size and measure about 4 mm in length. each gland is enclosed by irregular muscular layers.
Response of seeds and pollen of Onobrychis viciifolia and Onobrychis oxyodonta var. armena to NaCl stress
Beyaz, Ramazan;Kaya, Gamze;Cocu, Sati;Sancak, Cengiz;
Scientia Agricola , 2011, DOI: 10.1590/S0103-90162011000400013
Abstract: sainfoin (onobrychis viciifolia scop.) is an important forage legume crop with 52 species adapted to dry and poor soils in turkey, but little is known about the effects of salinity on germination and seedling growth in arid and semiarid regions suffering from salinity problem. the seeds and pollen of two species of sainfoin o. viciifolia and o. oxyodonta var. armena (syn: o. armena) were exposed to 0, 5, 10, 20 and 30 ds m-1 of nacl under in vivo and in vitro conditions and evaluated for germination under salt stress by comparing germination percentage, mean germination time, root and shoot length, fresh and dry seedling weight and dry matter. increased salinity levels generally resulted in decrease in all traits except time to germination, dry seedling weight and dry matter, which increased at high salinity levels. o. viciifolia seeds germinated and grew more rapidly compared to o. armena seeds under nacl stress. no decrease in germination and seedling growth up to 10 ds m-1 was recorded. on the other hand, there was a clear difference for germination and seedling growth between in vivo and in vitro conditions. lower values were obtained from in vitro experiments; suggesting that mineral salts, sucrose and agar may have resulted in higher osmotic potential inhibiting germination and seedling growth of species compared in vivo conditions. decrease in pollen germination with increasing salinities was very sharp, indicating that pollen germination had higher sensitive to salinity. but, pollen grains of o. armena germinated rapidly compared to o. viciifolia. the results emphasize that in vivo experiments could be used for screening of nacl tolerance in sainfoin cultivars without expensive chemicals and sophisticated equipments, but pollen germination is more appropriate for its wild relatives.
The Effect of Salt Concentration on Some Characteristics in Herby Cheese
Zekai Tarakci,Emrullah Sagun,Hakan Sancak,Hisamettin Durmaz
Pakistan Journal of Nutrition , 2004,
Abstract: Herby cheese is a salted traditional cheese manufactured from sheep`s and cow`s milk in the Eastern and South-eastern of Turkey. The aim of this study was to assess the influence of different salt concentrations (4, 5 and 6%) on the ripening characteristics of Herby cheese. Pasteurized whole cow`s milk (3.7% fat) was used for Herby cheese manufacture. The cheese samples were ripened under soil at 7 1oC for 90 days. The samples were characterized in terms of microbiological, chemical and sensory properties. The ripening time had a significant (P<0.05) effect on all parameters except for protein, fat, total aerobic bacteria (TAB), appearance and colour, body and texture, and flavour. In addition, salt concentration had a significant influence on dry matter, salt, titratable acidity, micrococci and staphylococci, proteolytic bacteria, yeasts and moulds, appearance and colour, and saltiness. As a result, we concluded that increasing the salt concentration in cheese samples contributed to reducing the number of microorganisms and increased the acceptability in terms of appearance and colour, and body and texture from sensory properties.
Functional Morphology of the Venom Apparatus of Larinioides ixobolus (Araneae: Araneidae)
Nazife Yigit,Abdullah Bayram,Tarik Danisman,Zafer Sancak
Pakistan Journal of Biological Sciences , 2006,
Abstract: Larinioides ixobolus (Thorell, 873) is widely distributed throughout Middle Europe, Turkey and Middle Asia. The morphology of the venom apparatus of L. ixobolus using adult spiders that were collected from Kirikkale (Turkey) were investigated by scanning electron microscopy. The general organization of the venom apparatus of L. ixobolus is similar to other spiders` venom apparatus. The venom apparatus, situated in the anterior of the prosoma, is composed of a pair of chelicerae and venom glands. Each chelicera consists of a stout basal and a movable apical (fang) segments. The fang rests in a groove on the basal segment. Both sides of the cheliceral grooves are armed with three marginal teeth. To eject the venom, a venom pore is situated on the subterminal part of the fang. The venom glands of L. ixobolus are equal size and they look like a carrot. Each gland is surrounded by bulky muscular layer. Also, the nerve cells can be easily observed on the surface on the venom gland by Scanning Electron Microscope (SEM).
Synthesis and Characterization of Some New Tetraaldehyde and Tetraketone Derivatives and X-ray Structure of 1,1'-(4,4'-(2- (1,3-bis(4-Acetylphenoxy)propan-2-ylidene)propane-1,3-diyl) bis(oxy)bis(4,1-phenylene))diethanone
Mustafa Er,Re?…??at Ustaba?…??,Ufuk ????oruh,Kemal Sancak
International Journal of Molecular Sciences , 2008,
Abstract: Tetraketone and tetraaldehyde derivatives 2a-d were synthesized via the reaction of ethene-1,1,2,2,-tetra-yl-tetramethylene tetrabromide (1) with hydroxyketone and aldehyde derivatives. The molecular structures were identifed by IR, 1H-NMR, 13CNMR and MS analysis. The crystal structure of the title compound 2a, C38H36O8, is reported. Its crystal data are: monoclinic, space group P 2(1)/n with cell dimensions of a= 9.0395(12) … ,b= 12.6114(17) …, c = 13.8166(18) …, 2= 95.875(3), V= 1566.8(4) …3, F.W.= 620.67, calc =1.316 gcm3 for Z=2, =0.092 mm-1
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