Browsing by Author "Tutuncu, Mehmet"

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Dermatitis Solaris and Its Treatment in Van Cats
(indian veterinary Journal, 2006) Karaca, Mehmet; Tutuncu, Mehmet; Akkan, Hasan Altan; Yuksel, Hayati; Keles, Ihsan; Agaoglu, Zahid
Dermatitis solaris is a skin disease of light coloured cats and dogs seen in summer season. The disease occurs especially on the unpigmented areas such as tip of the ears, nose, body and extremities as a result of phototoxic reactions when subjected to ultraviolet lights. The disease has been reported to come into view as chronic dermatitis in cats having white ear and blue eyes. (Haziroglu and Milli, 1998). The pathogenesis of feline dermatitis is thought to occur as a result of free radicals released after phototoxic reactions (Soter, 1990).
Detection of Seasonal Asymptomatic Dermatophytes in Van Cats
(Springer, 2016) Ilhan, Ziya; Karaca, Mehmet; Ekin, Ismail Hakki; Solmaz, Hasan; Akkan, Hasan Altan; Tutuncu, Mehmet
The Van cat is a domestic landrace found in the Van province of eastern Turkey. In this study, we aimed to determine the seasonal carriage of dermatophytes in Van cats without clinical lesions. A total of 264 hair specimens were collected from clinically healthy cats in and around the Van Province. Of these samples, 30.3% were obtained in spring, 30.6% in summer, 16.6% in autumn, and 22.3% in winter; 45.1% of samples were from male cats and the rest from female ones. Of the studied cats, 118 were younger than 1 year, 78 were 1-3 years old, and 68 were older than 3 years. The specimens were subjected to direct microscopic examination with 15% potassium hydroxide and cultured on Sabouraud dextrose agar and dermatophyte test medium supplemented with cycloheximide and chloramphenicol. Dermatophyte identification was carried out based on macroscopic and microscopic colony morphology, urease activities, in vitro hair perforation test, growth at 37 degrees C, and pigmentation on corn meal agar. Dermatophytes were isolated from 19 (7.1%) of the 264 specimens examined. The most frequently isolated fungi were Trichophyton terrestre (4.1%), followed by Microsporum gypseum (1.1%), M. nanum (1.1%), and T. mentagrophytes (0.7%), and these fungi may represent a health risk for humans in contact with clinically healthy Van cats. M. canis was not isolated from any of the specimens. Our results show no significant (p>0.05) association between carriage of dermatophytes and the gender of cats. The carriage rate of dermatophytes was high in spring and winter, and the only possible risk factor for infection was age of the animal. (C) 2015 Sociedade Brasileira de Microbiologia. Published by Elsevier Editora Ltda.
Investigation of the Seroprevalance of Maedi-Visna in the Region of Van Using Elisa and Histopathological Findings
(Medwell online, 2009) Akkan, Hasan Altan; Karaca, Mehmet; Tutuncu, Mehmet; Keles, Ihsan; Ilhan, Fatma; Cetin, Yunus; Tasal, Ibrahim
In the present study, seroprevalance of maedi-visna in sheep in the region of Van was aimed to investigate. A total of 465 serum samples obtained from sheep raised in Van and its towns were investigated with regard to maedi-visna specific antibody using ELISA procedure. Out of 465 samples 30 of them were seropositive (6.45%) and 20 of them were doubtful (4.30%) according to test procedure. Histopathology was also applied to some of these sheep which slaughtered in an abattoir after blood sampling. According to histopathological analysis 9 doubtful samples were also found to be positive. But, due to mild lymphoproliferation in there samples ELISA gave doubtful results. As a result with this study, seroprevalance of maedi-visna was determined in the region of Van and in the doubtful cases histopathological assessments believed to strengthen serological findings.
A Serological Investigation of Pestiviruses in Sheep in Eastern Border of Turkey
(Springer, 2011) Tutuncu, Mehmet; Duz, Erkan; Karaca, Mehmet; Akkan, Hasan Altan; Keles, Ihsan; Bakir, Bahtiyar; Tasal, Ibrahim
All pestiviruses are important veterinary pathogens causing economic losses in cattle, sheep, and pigs. In this study, blood samples randomly collected from 465 sheep were analysed for the presence of antibodies to pestiviruses (bovine viral diarrhea virus, border disease virus) using an enzyme-linked immunosorbent assay in the province of Van and their towns. The seroprevalance were estimated as 75.9% and 60.0-82.5% in the sampled animals and sampled towns, respectively. The results revealed that pestiviruses are important abort pathogens in the province of Van and their towns.
Studies on the Determination of Seroprevalance of Q Fever in Sheep in the Region of Van
(Medwell online, 2009) Karaca, Mehmet; Akkan, Hasan Altan; Cetin, Yunus; Keles, Ihsan; Tutuncu, Mehmet; Ozkan, Cumali; Tasal, Ibrahim
In the present study, seroprevalance of Q fever in sheep in the region of Van was aimed to investigate. A total 465 serum samples obtained from the city of Van and its different provinces were investigated with regard to Q fever specific antibodies using ELISA technique. Out of 465 serum sample 98 of them (21.07%) were found to be positive and I I of them (2.37%) were doubtful with regard to Q fever specific antibodies.
Synthetic Seed Production of Flower Bulbs
(Springer Nature Switzerland Ag, 2019) Kocak, Metin; Sevindik, Basar; Izgu, Tolga; Tutuncu, Mehmet; Mendi, Yesim Yalcin
Flower bulbs are perennial or annual plants with underground structures such as bulb, corn, tuber, and rhizomes. These plants have economic value especially in ornamental plant sector as cut flower, potted flower, and outdoor plants. Most of these plants have garish flower, and many of them are monocotyledon. Cyclamen, Tulipa, Lilium, Narcissus, Gladiolus, Hyacinthus, Crocus, Iris, Allium, Alstroemeria, Anemone, Orchis, Rhododendron, Freesia, Hippeastrum, Muscari, Ornithogalum, Ranunculus, and Zantedeschia are the most important geophytes that are commercially used in the world. These plants can be propagated using conventional and tissue culture techniques. Synthetic seed production is one of these techniques. Synthetic seed, namely, artificial seed, is described as artificially encapsulated plant tissues and somatic embryos with alginate hydrogel. Synthetic seed technology has significant effect on the conservation of the plant tissues and sustainability of the plants. Recently, conservation of the plant species studies significantly increased, and artificial seed method was used as the most common process to conserve important species. In this chapter, oldest and newest synthetic seed production researches were discussed and presented chronologically.