146 results on '"Keskin, Oktay"'
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2. Determination of serogroup and lytic activities of bacteriophages isolated from phage plaques in Staphylococcus aureus cultures identified from sheep milk with mastitis
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Gurbilek, Sevil Erdenlig, Arserim, Neval Berrin, Tel, Osman Yasar, Sertkaya, Zeynep Tugce, and Keskin, Oktay
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- 2024
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3. Genomic analysis of Brucella isolates from animals and humans, Türkiye, 2010 to 2020.
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Akar, Kadir, Brangsch, Hanka, Jamil, Tariq, Öz, Gülseren Yıldız, Baklan, Emin Ayhan, Eroğlu, Buket, Atıl, Eray, Gürbilek, Sevil Erdenlig, Keskin, Oktay, Tel, Osman Yaşar, Yücetepe, Ayfer Güllü, Sandalakis, Vassilios, Boukouvala, Evridiki, Psaroulaki, Anna, Abd El Tawab, Ashraf A., Melzer, Falk, Pletz, Mathias W., Neubauer, Heinrich, and Wareth, Gamal
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- 2024
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4. Encapsulation and drying methods in the production of powdered red cabbage (Brassica oleracea L.): Chemometrics and Fourier transform infrared spectroscopy
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Baltacıoğlu, Cem, primary, Keskin, Oktay, additional, Baltacıoğlu, Hande, additional, and Ağçam, Erdal, additional
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- 2024
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- View/download PDF
5. Kanatlılarda Kronik Solunum Yolu Hastalığının (CRD) Serolojik Tanısı İçin in-House Enzyme- Linked Immunosorbent Assay (ELISA) Geliştirilmesi
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ERDENLİG GÜRBİLEK, Sevil, primary, GÜLLÜ YÜCETEPE, Ayfer, additional, SAYTEKİN, Ahmet Murat, additional, KESKİN, Oktay, additional, and TEL, Yaşar, additional
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- 2023
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6. Development of a Multiplex PCR Assay for Rapid Differentiation of Fowlpox and Pigeonpox Viruses.
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Özgünlük, İrfan, Yücetepe, Ayfer Güllü, Çetiner, Burak, Keskin, Oktay, and Özyörük, Fuat
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DNA primers ,DIAGNOSTIC use of polymerase chain reaction ,POLYMERASE chain reaction ,PAVO ,GENOMES ,INFECTION control ,REVERSE transcriptase polymerase chain reaction - Abstract
The aim of this study was to develop a multiplex PCR assay capable of rapidly differentiating two major Avipoxvirus (APV) species, Fowlpox virus (FWPV) and Pigeonpox virus (PGPV), which cause disease in bird species. Despite the importance of a rapid differentiation assay, no such assay exists that can differentiate the APV species without sequencing. To achieve this, species-specific target DNA fragments were selected from the fpv122 gene of FWPV and the HM89_gp120 gene of PGPV, which are unique to each genome. Nine samples collected from unvaccinated chickens, pigeons, and a turkey with typical pox lesions were genetically identified as FWPV and PGPV. The designed primers and target DNA fragments were validated using in silico analyses with the nucleotide Basic Local Alignment Search Tool. The multiplex PCR assay consisted of species-specific primers and previously described PanAPV primers (genus-specific) and was able to differentiate FWPV and PGPV, consistent with the phylogenetic outputs. This study represents the first successful differentiation of FWPV and PGPV genomes using a conventional multiplex PCR test. This assay has the potential to facilitate the rapid diagnosis and control of APV infections. Desarrollo de un ensayo de PCR múltiple para la diferenciación rápida de los virus de la viruela aviar y la viruela de paloma. El objetivo de este estudio fue desarrollar un ensayo de PCR múltiple capaz de diferenciar rápidamente dos especies principales de Avipoxvirus (APV) (viruela del pollo), el Fowlpox virus (FWPV) y el Pigeonpox virus (PGPV), (viruela de la gallina), que causan enfermedades en especies de aves. A pesar de la importancia de un ensayo de diferenciación rápida, no existe ningún ensayo que pueda diferenciar las especies de APV sin secuenciación. Para lograr esto, se seleccionaron fragmentos blanco de ADN específicos de especie del gene fpv122 de FWPV y el gene HM89_gp120 de Pigeonpox virus, que son únicos para cada genoma. Nueve muestras recolectadas de pollos, palomas y un pavo que no fueron vacunados con lesiones típicas de la viruela se identificaron genéticamente como FWPV y PGPV. Los iniciadores diseñados y los fragmentos de ADN blanco se validaron mediante análisis in silico mediante la herramienta de búsqueda de alineación local básica de nucleótidos (BLAST). El ensayo de PCR múltiple consistió en iniciadores específicos de especie y cebadores PanAPV previamente descritos (específicos de género) y fue capaz de diferenciar entre Fowlpox virus y Pigeonpox virus, de acuerdo con los resultados filogenéticos. Este estudio representa la primera diferenciación exitosa de los genomas de Fowlpox virus y Pigeonpox virus utilizando una prueba de PCR múltiple convencional. Este ensayo tiene el potencial de facilitar el diagnóstico rápido y el control de las infecciones por Avipoxvirus. [ABSTRACT FROM AUTHOR]
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- 2024
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7. PALEOMİKROBİYOLOJİ: ARKEOLOJİDEN MİKROBİYOLOJİYE.
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KESKİN, Oktay and ALBAYRAK, Yusuf
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FOSSIL DNA ,BACTERIAL DNA ,MICROBIOLOGY ,ARCHAEOLOGY ,MICROORGANISMS - Abstract
Copyright of Black Sea / Karadeniz is the property of Black Sea / Karadeniz and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2023
- Full Text
- View/download PDF
8. Kanatlılarda kronik solunum yolu hastalığının (CRD) serolojik tanısı için in-House Enzyme-Linked Immunosorbent Assay (ELISA) geliştirilmesi.
- Author
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Gürbilek, Sevil Erdenliğ, Yücetepe, Ayfer Güllü, Saytekin, Ahmet Murat, Keskin, Oktay, and Tel, Osman Yaşar
- Abstract
Copyright of Etlik Veteriner Mikrobiyoloji Dergisi is the property of Veteriner Kontrol Merkez Arastirma Enstitusu and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2023
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9. Gıda ve Hayvan Klinik Listeria monocytogenes İzolatlarının Tam Genom Dizilimine Dayalı Karakterizasyonu
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ASLANTAŞ, Özkan, primary, BÜYÜKALTAY, Kaan, primary, KESKİN, Oktay, primary, GÜLLÜ YÜCETEPE, Ayfer, primary, and ADIGÜZEL, Adem, primary
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- 2023
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10. Development of an In House Enzyme-Linked Immunosorbent Assay (ELISA) Prototype Using Different Anti- gens for Serological Diagnosis of Brucella ovis
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KESKİN, Oktay, primary, SAYTEKİN, Ahmet Murat, additional, GÜLLÜ YÜCETEPE, Ayfer, additional, TEL, Osman Yaşar, additional, and ERDENLİĞ GÜRBİLEK, Sevil, additional
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- 2022
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11. Development of antigen-capture ELISA using monoclonal antibodies for the detection of brucellae in milk.
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Gürbilek, Sevil E., Keskin, Oktay, and Tel, Osman Y.
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ENZYME-linked immunosorbent assay ,BRUCELLA ,DETECTION limit ,CATTLE ,GOATS - Abstract
In this study, a Brucella antigen-capture ELISA (Ag-cELISA) prototype was developed. To study the validity of the developed Ag-cELISA, milk samples collected from Brucella-positive goats (n=120) and cattle (n= 64), as well as from unknown Brucellastatus cattle (n=105) and sheep (n=65) herds were tested by Ag-cELISA, I-ELISA, and culture method. All Brucella-positive samples were confirmed using PCR. It was found that the developed Ag-cELISA could detect 50-100 bacteria per well (equivalent to 10³ to 2×10³ cells per mL) as the lowest limit of detection (LOD) and was therefore considered moderately sensitive to detect brucellae in milk. In an infected goat herd, out of 120 milk samples, 41, 32, and 17 were positive by Ag-cELISA, I-ELISA, and culture, respectively. Ag-cELISA detected 15 positive cases out of 17 culture-positive milk samples. Two culture-positive milk samples were not detected in Ag-cELISA. The relative sensitivity and specificity between Ag-cELISA and I-ELISA were 78% and 100%, respectively. In an infected cow herd, out of 64 milk samples, 32, 23, and 11 were found positive by Ag-cELISA, I-ELISA, and culture, respectively. Ten out of 11 culturally positive milk samples were found positive by Ag-cELISA. The relative sensitivity and specificity between the Ag-cELISA and I-ELISA were 71.9% and 100%, respectively. From randomly collected 105 cow and 110 sheep milk samples from herds of unknown Brucella-infection status, three (2.85%) and five (4.5%) samples were found positive using Ag-cELISA, respectively. These results showed that Ag-cELISA could detect brucellae in milk more practically and safely than bacterial culture. On the other hand, this information reaffirms that milk can be an important source of brucellosis and creates a public health risk in humans; therefore, increased public awareness is of utmost importance. [ABSTRACT FROM AUTHOR]
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- 2023
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12. Buzağı Nasal Svap Örneklerinden Pasteurella multocida ve Mannheimia haemolytica İzolasyonunda Kromojenik Besiyerinin Etkinliğinin Araştırılması
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TEL, Osman Yaşar, ÖTKÜN, Songül, YÜCETEPE, Ayfer Güllü, and KESKİN, Oktay
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Veteriner Hekimlik ,Veterinary Sciences ,Kromojenik besiyeri ,Pasteurella ,sığır solunum hastalığı ,kültür - Abstract
Accurate and rapid diagnosis of disease agents is the most important step in terms of controlpractices. Chromogenic media are culture media that allow the formation of colonies in colorsspecific to target microorganisms. Because they are target-specific, they do not require validationof results but provide ease of use and time savings. In this study, it was aimed to evaluatethe effectiveness of a chromogenic medium (Pasteurella BDR kit) in the detection of Pasteurellamultocida and Mannheimia haemolytica agents in the Pasteurelleceae family, which cause respiratorydisease in cattle. In this study, nasal swab samples taken from calves showing symptomsof respiratory disease were cultured in chromogenic and standard media. Suspicious growingcolonies were confirmed by polymerase chain reaction for P. multocida and M. haemolytica. While31 (36.9%) samples formed colonies with the chromogenic medium in the color specific to thetarget bacteria, 28 (33.3%) samples were positively determined for the target bacteria using thestandard cultural method. The results of 26 samples were positive by both cultural diagnosismethods. When the results were compared with the traditional cultural diagnosis, agreementwas found to be 92.86%. All colored colonies grown on the chromogenic medium were also testedby polymerase chain reaction (PCR). It was determined that the chromogenic medium detected P.multocida at a rate of 92.86% (n = 26) and M. haemolytica at a rate of 100% (n = 2) by forming colonieswith a family-specific color. As a result, it was concluded that the use of chromogenic mediais beneficial in the practical, rapid, and high-accuracy diagnosis of target agents., Hastalık etkenlerinin doğru ve hızlı teşhisi, kontrol uygulamaları açısından en önemli basamaktır.Kromojenik besiyerleri hedef mikroorganizmalara özgü renkte kolonilerin meydana gelmesinisağlayan kültür ortamlarıdır. Bunlar hedefe özgü olduklarından sonuçların doğrulama ihtiyacı duymamaklabirlikte, kullanım kolaylığı ve zaman tasarrufu sağlarlar. Bu çalışmada, sığırlarda solumunhastalığına neden olan Pasteurelleceae ailesinde bulunan Pasteurella multocida ve Mannheimiahaemolytica etkenlerinin tespitinde, kromojenik besiyerinin (Pasteurella BRD Kit) etkinliğinideğerlendirmek amaçlandı. Çalışmada solunum hastalığı belirtisi gösteren buzağılardan alınannasal svap örnekleri kromojenik ve standart besiyerlerinde kültüre edildi. Üreyen şüpheli kolonilerPasteurella multocida ve Mannheimia haemolytica yönünden Polimeraz Zincir Reaksiyonu(PCR) ile doğrulandı. Kromojenik besiyeri ile 31 (%36,9) numune, hedef bakterilere özgü renktekoloni oluştururken, standard kültürel yöntem ile 28 (%33,3) numune hedef bakteriler yönündenpozitif olarak belirlendi. Her iki kültürel tanı yöntemiyle 26 numunenin sonuçları pozitif olarak tespitedildi. Sonuçlar geleneksel kültürel tanı ile karşılaştırıldığında %92,86 oranında uyumlu sonuç bulundu. Kromojenik besiyerinde üreyen renkli kolonilerin tamamı PCR ile de test edildi. Kromojenik besiyeri P. multocida’yı %92,86(n:26), M. haemolytica’yı %100 (n:2) oranında aileye özgü renkte koloni meydana getirme suretiyle tespit ettiği belirlendi.Sonuç olarak, hedef etkenin pratik, hızlı ve yüksek doğrulukla teşhisinde kromojenik besiyerinin kullanımının yararlı olduğu kanısınavarıldı.
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- 2022
13. Smooth and Rough Brucella Infections in Dogs
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Arserim, Neval Berrin, primary, Gürbilek, Sevil Erdenliğ, additional, Keskin, Oktay, additional, Tel, Yaþar, additional, and Doğan, Elif, additional
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- 2022
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14. SALMONELLA, CAMPYLOBACTER, AND CHLAMYDOPHILA IN BALD IBIS (GERONTICUS EREMITA) FECES IN TURKEY
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Tel, Osman Yaşar, Bozkaya, Faruk, and Keskin, Oktay
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- 2013
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15. Whole-Genome Sequencing-Based Characterization of Listeria monocytogenes from Food and Animal Clinical Cases.
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ASLANTAŞ, Özkan, BÜYÜKALTAY, Kaan, KESKİN, Oktay, YÜCETEPE, Ayfer GÜLLÜ, and ADIGÜZEL, Adem
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LISTERIA monocytogenes ,FOOD of animal origin ,FOOD animals ,NUCLEOTIDE sequencing ,LISTERIOSIS - Abstract
Copyright of Kafkas Universitesi Veteriner Fakultesi Dergisi is the property of University of Kafkas, Faculty of Veterinary Medicine and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
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16. Klinik semptom gösteren tavuk ve hindilerden patojen Mikoplazma türlerinin multipleks PCR ile tanımlanması
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GÜLLÜ YÜCETEPE, Ayfer, primary, SAYTEKİN, Ahmet Murat, additional, TEL, Yaşar, additional, ERDENLİĞ GÜRBİLEK, Sevil, additional, and KESKİN, Oktay, additional
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- 2022
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17. Determination of Serogroup and Lytic Activities of Bacteriophages Isolated from Phage Plaques in Staphylococcus aureus Cultures Identified from Sheep Milk with Mastitis
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Gürbilek, Sevil Erdenliğ, primary, Arserim, Neval Berrin, additional, Tel, Osman Yaşar, additional, Sertkaya, Zeynep, additional, and Keskin, Oktay, additional
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- 2022
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18. Klinik İnek Mastitis Vakalarından İzole Edilen Pseudomonas aeruginosa Suşlarının Moleküler Karakterizasyonu
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ASLANTAŞ, Özkan, primary, TÜRKYILMAZ, Süheyla, primary, KESKİN, Oktay, primary, GÜLLÜ YÜCETEPE, Ayfer, primary, and BÜYÜKALTAY, Kaan, primary
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- 2022
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19. Tulareminin Serolojik Teşhisi için Lateral Flow Testinin Geliştirilmesi
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TEL, Osman Yaşar, primary, ERDENLİĞ GÜRBİLEK, Sevil, primary, KESKİN, Oktay, primary, GÜLLÜ YÜCETEPE, Ayfer, primary, and KARADENİZLİ, Aynur, primary
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- 2022
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20. COVID-19 infections in pets such as cats and dogs
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DEMİRCİ, Mehmet, primary, YIĞIN, Akin, additional, KOCAZEYBEK, Bekir, additional, and KESKİN, Oktay, additional
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- 2021
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21. Ceylanlarda (Gazella subgutturosa) parazitik pnömoni veTrueperella pyogenes ve Candida albicans ile ilişkili nekrotik-purulent bronkopnömoni
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YILMAZ, Rahsan, primary, KESKİN, Oktay, additional, and GÜLLÜ YÜCETEPE, Ayfer, additional
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- 2021
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22. Şanlıurfa’da Safkan Arap Atlarında Chlamydia abortus Seropozitifliğinin Belirlenmesi
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KARADAŞ, İsmail, primary and KESKİN, Oktay, additional
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- 2021
- Full Text
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23. Molecular Identification of Nosemosis Agents in Honeybees Found in Siirt and Sanliurfa
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TEL, Osman Yaşar, ÖTKÜN, Songül, GÜLLÜ YÜCETEPE, Ayfer, ERDENLİĞ GÜRBİLEK, Sevil, and KESKİN, Oktay
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Fen ,Science ,Multiplex PCR,Nosema ceranae,Nosemosis,Arıcılık ,Multiplex PCR,Nosema Ceranae,Nosemosis,Beekeeping - Abstract
Nosemosis bal arılarında (Epis mellifera) sıkça görülen küresel bir hastalıktır. Hastalığın etkeni fungal mikroorganizmalar olan Nosema apis ve Nosema ceranae’dir. Bu çalışmada Siirt ve Şanlıurfa’da bal verimi düşük ve zayıf (popülasyonu düşük) arı kolonilerinde Nosema spp. sporlarının varlığının mikroskobik olarak muayene edilmesi ve pozitif bulunan örneklerden, multipleks PCR (Polimeraz zincir reaksiyonu) ile etkenin tür düzeyinde tespiti amaçlandı. Her iki ilde toplam 8 arılıkta 44 kovandan alınan 880 arı numunesi mikroskobik olarak spor varlığı yönünden incelenmiş ve 19’unda (%43,18) nosema sporları tespit edilmiştir. Multipleks PCR ile bu sporların tamamının N. ceranae olduğu belirlendi. Sonuç olarak, nosemosis’in bölgede arıcılık işletmelerinde önemli bir problem olduğu, bu nedenle nosemosis yönünden gerekli tedbirlerin alınması gerektiği kanısına varıldı., disease are Nosema apis and Nosema ceranae, which are fungal microorganisms. In this study, we aimed to detect the disease agent at species level in bee colonies in which honey production was poor ( low population) in Siirt and Şanlıurfa. For this purpose, the presence of spores of Nosema spp. was examined microscopically and positive samples were tested by multiplex polymerase reaction. A total of 880 bee samples from 8 apiaries and 44 hives in both provinces were examined microscopically and 19 out of 44 hives (43,18%) were found as positive for the presence of spores of Nosema. All the spores were belong to N. ceranae by multiplex PCR.As conclusion, we thought that nosemosis is an important problem in honey bees apiaries in Siirt and Şanlıurfa and in this context, required prevention measures should be taken for nosemosis.
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- 2021
24. Ceylanlarda (Gazella subgutturosa) parazitik pnömoni veTrueperella pyogenes ve Candida albicans ile ilişkili nekrotik-purulent bronkopnömoni
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YILMAZ, Rahsan, KESKİN, Oktay, and GÜLLÜ YÜCETEPE, Ayfer
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Health Care Sciences and Services ,Trueperella pyogenes,Candida albicans,parazitik pnömoni,Gazella subgutturosa ,Sağlık Bilimleri ve Hizmetleri ,Trueperella pyogenes,Candida albicans,parasitic pneumonia,Gazella subgutturosa - Abstract
This study presents the macroscobical, histopathological and bacteriological findings of Trueperella pyogenes and Candida albicans associated necrotic-purulent bronchopneumonia and parasitic pneumonia in captive gazelles (Gazella subgutturosa). Two male gazelles were found dead in the Sanliurfa Kızılkuyu Wildlife Reserve Area which were brought to the University of Harran, Faculty of Veterinary Medicine, Department of Pathology for necropsy. At necropsy detected foci 1-1,5 cm in diameter, whitish color, soft consistency in the lung. There are exudate creamy the cut section of the foci. The adult parasites and coagulated blood were observed in the lumen some of the bronchi. In the microscopical examination, it was observed necrotic-purulent bronchopneumonia foci and the fungal hyphae in the lung. The parasites were encountered in the lumen some of the bronchiole. In the bacteriological examination, T. pyogenes and Candida albicans were isolated as the major pathogen. This is the first report of parasitic pneumonia and necrotic-purulent bronchopneumonia caused by T. pyogenes and Candida albicans in gazelles (Gazella subgutturosa., Bu çalışmada, ceylanda (Gazella subgutturosa) Trueperella pyogenes ve Candida albicans'la ilişkili nekrotik-purulent bronkopnömoni ve parasitik pnömoninin makroskobik, histopatolojik ve bakteriyolojik bulgularını sunulmaktadır. Şanlıurfa Kızılkuyu Yaban Hayatı Koruma Alanı'nda ölü bulunan 2 erkek ceylan; nekropsi için Harran Üniversitesi Veteriner Fakültesi Patoloji Anabilim Dalı'na getirildi. Nekropside, akciğerde 1-1,5 cm çapında, beyazımsı renkte, yumuşak kıvamda odaklar görüldü. Odakların kesik yüzünde krema kıvamlı eksudat bulunmaktaydı. Bazı bronşların lümeninde yetişkin parazit ve pıhtılaşmış kana rastlandı. Mikroskobik incelemede, akciğerde nekrotik-purulent bronkopnömoni odakları ve mantar hifaları görüldü. Bazı bronşların lümeninde parazitlere rastlandı. Bakteriyolojik incelemede, T. pyogenes ve Candida albicans ana patojen olarak izole edildi. Bu, ceylanlarda (Gazella subgutturosa) T. pyogenes ve Candida albicans'ın neden olduğu nekrotik-purulent bronkopnömoni ile parazitik pnömoninin birlikte sunulduğu ilk rapordur.
- Published
- 2021
25. Investigation of the Effectiveness of Chromogenic Media in the Isolation of Pasteurella multocida and Mannheimia haemolytica from Calf Nasal Swab Samples.
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TEL, Osman Yaşar, ÖTKÜN, Songül, YÜCETEPE, Ayfer Güllü, and KESKİN, Oktay
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MANNHEIMIA haemolytica ,PASTEURELLA multocida ,POLYMERASE chain reaction ,CALVES ,SYMPTOMS ,CATTLE diseases ,RESPIRATORY diseases - Abstract
Copyright of Veterinary Sciences & Practices is the property of Ataturk University Coordinatorship of Scientific Journals and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2022
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26. Molecular Characterization of Pseudomonas aeruginosa Isolated From Clinical Bovine Mastitis Cases.
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ASLANTAŞ, Özkan, TÜRKYILMAZ, Süheyla, KESKİN, Oktay, Ayfer, GÜLLÜ YÜCETEPE, and BÜYÜKALTAY, Kaan
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BOVINE mastitis ,PSEUDOMONAS aeruginosa ,GENETIC regulation ,NUCLEOTIDE sequencing ,MOLECULAR cloning ,DRUG resistance in microorganisms - Abstract
Copyright of Kafkas Universitesi Veteriner Fakultesi Dergisi is the property of University of Kafkas, Faculty of Veterinary Medicine and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
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27. Güvercinlerde çiçek virusu izolasyonu
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KÜR, Mehmet, primary and KESKİN, Oktay, additional
- Published
- 2021
- Full Text
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28. Siirt ve Şanlıurfa’da Bulunan Bal arılarında Nosemosis Etkenlerinin Moleküler Teşhisi
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TEL, Osman Yaşar, primary, ÖTKÜN, Songül, additional, GÜLLÜ YÜCETEPE, Ayfer, additional, ERDENLİĞ GÜRBİLEK, Sevil, additional, and KESKİN, Oktay, additional
- Published
- 2021
- Full Text
- View/download PDF
29. Draft Genome Sequence of Staphylococcus felis HARRANVET Strain
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ASLANTAŞ, Özkan, primary, KESKİN, Oktay, additional, BÜYÜKALTAY, Kaan, additional, and GÜLLÜ YÜCETEPE, Ayfer, additional
- Published
- 2021
- Full Text
- View/download PDF
30. Sığırlardan i̇zole edilen trichophyton verrucosum suşlarının PCR-RFLP ile moleküler karakterizasyonu
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TEL, Osman Yaşar, GÜLLÜ YÜCETEPE, Ayfer, KESKİN, Oktay, and ERDENLİĞ GÜRBİLEK, Sevil
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PCR-RFLP ,Trichophyton Verrucosum ,Cattle,Dermatophytosis,PCR-RFLP,Trichophyton verrucosum ,Sığır ,Veteriner Hekimlik ,Dermatofitosis ,Veterinary Sciences ,Dermatofitosis,PCR-RFLP,Sığır,Trichophyton verrucosum - Abstract
Dermatofitler, insan ve hayvanlarda keratin içeren dokuları infekte ederek dermatofit infeksiyonuna neden olmaktadırlar. Trichophyton verrucosum sığır dermatofitozis olgularının en yaygın etkenidir. Trichophytosis, bütün dünyada hayvancılık sektöründe önemli ekonomik kayıplara neden olması yanında zoonoz olmasıyla da insan sağlığını tehdit etmektedir. Sığırlardan genellikle T. verrucosum izole edilmektedir. Sığırlar bu etkenin doğal rezervuarıdırlar. Bu çalışmanın amacı, sığırlarda hastalığa neden olan dermatofitlerinin izolasyonu ve izole edilen T. verrucosum suşlarının Internal Transcribed Spacer (ITS) bölgelerinin PCR-RFLP ile moleküler ayrımının yapılmasıdır. Bu amaçla dermatofitozisli sığırlardan 90 adet örnek alınarak kültürleri yapıldı. Bu örneklerin kültürü sonucunda 35 (%38,8) adet T. verrucosum izole ve identifiye edildi. Bu suşların DNA izolasyonu gerçekleştirilerek ITS bölgelerin amplifikasyonu gerçekleştirildi. T. verrucosum suşlarının MvaI ve HinfI enzimleri kullanılarak yapılan Restriction Fragment Lenght Polymorphism (RFLP) analizleri sonucunda bir adet RFLP profiline rastlandı. Sonuç olarak, izole edilen T. verrucosum suşlarının PCR-RFLP sonucunda tek bir profile sahip olduğu, farklı profil örneklerinin saptanması için farklı bölgelerden hatta farklı ülkelerden suşların PCR-RFLP’lerinin yapılması gerektiği kanısına varıldı., Dermatophytes infect tissues containing keratin in humans and animals, causing dermatophytosis infection. Trichophyton verrucosum is the most common agent of bovine dermatophytosis cases. Trichophytosis causes big economic lossess throughout the world and also threatens human health by being a zoonosis. T. verrucosum is usually isolated from cattle. Cattle are the natural reservoirs of this agent. The aim of this study is to isolate disease-causing dermatophytes in cattle and to carry out molecular separation of Internal Transcribed Spacer (ITS) regions of the isolated T. verrucosum strains by PCR- Restriction Fragment Lenght Polymorphism (PCR-RFLP). For this purpose, 90 samples were taken from the cattle with dermatophytosis for cultural examination. As a result of the culture of these samples, 35 (38.8%) T. verrucosum were isolated and identified. DNA isolation of these strains was made and amplification of ITS regions was performed. It was only one RFLP profile was found according to the results of RFLP analysis of T. verrucosum strains using MvaI and HinfI enzymes. At the end of study, it was founded that the isolated T. verrucosum strains showed a single profile by PCR-RFLP analysis and PCR-RFLP was a useful tool for the molecular characterization of the strains. İt was also concluded that PCR-RFLPs of strains from different regions or even from different countries might be necessary in order to detect different profiles of the tested samples.
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- 2021
31. Bir kedideki nekrotizan fasiit olgusundan izole edilen iki zoonotik bakteri: Streptococcus canis ve Staphylococcus felis
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GÜLLÜ YÜCETEPE, Ayfer, ARSERİM, Neval Berrin, ÖZCAN, Nida, CENAK, Hakan, and KESKİN, Oktay
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Veterinary ,Veteriner Hekimlik ,Kedi,Streptococcus canis,Staphylococcus felis,nekrotizan fasiit ,Cat,Streptococcus canis,Staphylococcus felis,necrotizing fasciitis ,biochemical phenomena, metabolism, and nutrition - Abstract
Nekrotizan fasiit (NF) deri altı ve fasiyal dokuların hızla yayılan, potansiyel olarak hayati tehlike yaratan bakteriyel bir enfeksiyonu olup, hastalığın etiyolojisinde farklı bakteriler yer alır. Bu bildiride bir özel veteriner kliniğine yüzde yara şikâyetiyle getirilen 2 yaşında, 3 kg ağırlığındaki dişi tekir kedinin klinik muayenesinde NF olası tanısı konulan bir olgu sunu amaçlanmıştır. Hasta kedinin klinik muayenesinde genel durumun iyi olduğu, yüz bölgesinin her iki tarafında irinleşmemiş nekrotik lezyonlar olduğu saptandığı için Harran Üniversitesi Veteriner Fakültesi Mikrobiyoloji Anabilim Dalına başvuruldu. Lezyonlu bölgelerden alınan steril svap örneklerinden %7 koyun kanlı agara ekim yapılarak aerobik ve anaearobik olarak inkübe edildi. Oluşan koloniler identifikasyona alındı. Klasik biyokimyasal testlerle Staphylococcus spp. ve Streptococcus spp. olarak saptanan etkenler MALDI-TOF’la (Bruker Corporation; Billerica, MA, USA) aynı zamanda zoonoz ajanlar olan Staphylococcus felis ve Streptococcus canis identifiye edildi. Kirby-Bauer disk difüzyon tekniğiyle yapılan antibiyotik duyarlılık testine göre Staphylococcus felis tetrasiklin, penisilin, enrofloksasin, ampisilin, gentamisin, eritromisin, vankomisin, novobiosin, amoksisilin/klavulonik asit ve imipenem’e duyarlı, neomisin ve streptomisin’e orta derecede duyarlı ve oksasilin’e dirençli bulunurken, Streptococcus canis penisilin, oksasilin, enrofloksasin, ampisilin, eritromisin, vankomisin, amoksisilin/klavulonik asit ve imipenem’e duyarlı, neomisin, tetrasiklin, novobiosin’e orta derecede duyarlı, streptomisin ve gentamisin’e dirençli olarak saptandı. Bu sonuçlara göre tedavi olarak 10 gün süre ile enrofloksasin + amoksisilin/kalvulonik asit kombinasyonu yapıldı. Tedavi, 2 hafta kantaron yağı, sonrasında aloea-vera sıvısı ve jeli, ayrıca propolisle desteklendi. Tedavi süresi sonucunda klinik iyileşme gözlendi. Sonuç olarak farklı bakteriler tarafından oluşturulabilen NF olgularında başarılı bir tedavi için, etiyolojinin ve duyarlı antibiyotiklerin belirlenmesinin hayvan ve insan sağlığı açısından önemli olduğu sonucuna varıldı., Necrotizing fasciitis (NF) is a potential life-threatening bacterial infection spreading into subcutaneous and fascial tissues rapidly. Several different bacteria involve in the etiology of the disease. In this report, a case has been presented with a probable diagnosis of necrotizing fasciitis from a two-year-old female tabby cat weighing 3 kilograms which is admitted to a veterinary clinic with the complaint of fascial wound. The cat was brought to Harran University Faculty of Veterinary Medicine Microbiology department because she has necrotic lesions without pus in her two sides of face. General condition of cat was evaluated as normal. Swabs taken from lesions were cultured on blood agar. After incubaton period, isolated bacteria were identified as Staphylococcus spp. and Streptococcus spp. by classical biochemical tests and as Staphylococcus felis ve Streptococcus canis, which are also zoonotic agents, by MALDI-TOF (Bruker Corporation; Billerica, MA, USA). According to Kirby-Bauer disk diffusion antibiotic sensitivity test results, Staphylococcus felis was found to be sensitive to tetracycline, penicillin, enrofloxacin, ampicillin, gentamicin, erythromycin, vancomycin, novobiocin, amoxicillin/clavulanic acid and imipenem, mildly resistant to neomycin and streptomycin, and resistant to oxacillin. Streptococcus canis was found to be sensitive to penicillin, oxacillin, enrofloxacin, ampicillin, erythromycin, vancomycin, amoxicillin/clavulanic acid, and imipenem, mildly resistant to neomycin, tetracycline, and novobiocin, and resistant to streptomycin and gentamicin. According to these results, a treatment regimen involving enrofloxacin and amoxicillin / clavulanic acid combination was given for 10 days. Treatment was also supported by the oil of centaury, aloe vera gel, and propolis for two weeks. At the end of treatment, clinical improvement was observed. As conclusion, it was thought that an effective treatment should include the determination of the etiological agents of NC and to use effective antibiotics to these agents for both animal and human health.
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- 2021
32. Two zoonotic bacteria isolated from a cat with necrotizing fasciitis: Streptococcus canis and Staphylococcus felis
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GÜLLÜ YÜCETEPE, Ayfer, primary, ARSERİM, Neval Berrin, additional, ÖZCAN, Nida, additional, CENAK, Hakan, additional, and KESKİN, Oktay, additional
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- 2021
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- View/download PDF
33. Brucella ovis'in Serolojik Tanısı Amacıyla Farklı Antijenlerin Kullanıldığı Bir In House Enzyme-Linked Immunosorbent Assay (ELISA) Prototipinin Geliştirilmesi.
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KESKİN, Oktay, SAYTEKİN, Ahmet Murat, GÜLLÜ YÜCETEPE, Ayfer, TEL, Osman Yaşar, and ERDENLİĞ GÜRBİLEK, Sevil
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- *
BRUCELLA , *HUMORAL immunity , *ENZYME-linked immunosorbent assay , *SERODIAGNOSIS , *SEROCONVERSION , *BACTERIOPHAGES - Abstract
In this study, it was aimed to develop an Enzyme-Linked Immunosorbent Assay (ELISA) prototype to evaluate humoral immune response against Brucella ovis by using different antigenic fractions from bacteria comparatively. For this purpose, four different antigens, namely Hot saline extract, Rough Lipopolysaccharide, Phage lysate 1, and Phage lysate 2 were used to test 84 sheep serum samples in ELISA. Seropositivity rates were, 14.3%, 13.1%, 10.7%, and 15.5%, respectively. Although the highest seropositivity rate was obtained by using the Phage lysate 2 antigen, it did not reach the level of statistical significance (χ²=0.89; P>0.05) difference between these antigens. It was concluded that in future studies, there would be a need for comparing the results of more serum samples tested in ELISA using Phage lysate 2 with the results of standard serological tests such as complement fixation test and agar gel immunodiffusion test or available commercial ELISA kit. Thus, the potential possibility of commercialization of a new in -house ELISA prototype will be evaluated more realistically. Given the seropositivity rate of Brucella ovis infection obtained by using a small number of serum samples, a large-scale serological study with greater serum samples from different parts of Turkey will reveal the real disease situation in our country. [ABSTRACT FROM AUTHOR]
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- 2022
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34. Development of Lateral Flow Test for Serological Diagnosis of Tularemia.
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TEL, Osman Yaşar, ERDENLİĞ GÜRBİLEK, Sevil, KESKİN, Oktay, GÜLLÜ YÜCETEPE, Ayfer, and KARADENİZLİ, Aynur
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TULAREMIA ,SERODIAGNOSIS ,ANTIBODY titer ,DIAGNOSIS ,BRUCELLOSIS ,FRANCISELLA tularensis - Abstract
Copyright of Kafkas Universitesi Veteriner Fakultesi Dergisi is the property of University of Kafkas, Faculty of Veterinary Medicine and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2022
- Full Text
- View/download PDF
35. Tulareminin Serolojik Tanısı İçin In House Enzyme- Linked Immunosorbent Assay (ELISA) Prototipi ve Mikroaglütinasyon Test (MAT) Antijeninin Geliştirilmesi
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ERDENLİĞ GÜRBİLEK, Sevil, primary, TEL, Osman Yaşar, additional, GÜLLÜ YÜCETEPE, Ayfer, additional, and KESKİN, Oktay, additional
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- 2021
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36. Tulareminin Serolojik Tanısı İçin In House Enzyme- Linked Immunosorbent Assay (ELISA) Prototipi ve Mikroaglütinasyon Test (MAT) Antijeninin Geliştirilmesi
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ERDENLİĞ GÜRBİLEK, Sevil, TEL, Osman Yaşar, GÜLLÜ YÜCETEPE, Ayfer, and KESKİN, Oktay
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Veterinary ,F. tularensis,MAT,ELISA,Western blot ,Veteriner Hekimlik - Abstract
In this study, a microagglutination test antigen stained by crystal violet and an in house Enzyme- Linked Immunosorbent Assay (ELISA) prototip were developed in order to detect antibodies against Francisella tularensis. Besides, Western blot technnique was used as the confirmatory test. According to the results, diagnostic sensitivity of MAT, ELISA and WB was 100%, while diagnostic specificities of these tests were 100%, 98% and 96%, respectively. Seropositiviy rates of serum samples taken from 72 human were 4.2% for both tests. Seropositivity rates of 190 serum samples from sheep were 3.2% for MAT and 4.7% for ELISA. Results seem that tularemia exists in both humans and in animals. However, in order to make more definitive evaluation about the disease, more serum samples taken from various animal species are needed to be tested for this disease. As conclusion, it was thought that ELISA and confirmatory Western blot will be suitable combination for serologic diagnosis of tularemia., Bu çalışmada, F. tularensis’e karşı gelişen antikorları saptamak için bir Enzyme- Linked Immunosorbent Assay (ELISA) prototipi ve kristal viyole boyalı bir MAT antijeni geliştirildi. Ayrıca konfirme edici Western blot (WB) tekniği de serumlara uygulandı. Alınan sonuçlara göre MAT, ELISA ve WB testlerinin tanısal duyarlılıkları %100 olarak bulunurken, özgüllükleri sırası ile %100, %98 ve %96 olarak bulundu. Geliştirilen MAT ve ELISA ile 72 insan serumunda seropozitiflik oranı her iki teste de %4.2 olarak bulunurken, 190 koyun serumunda MAT ve ELISA seropozitifliği sırası ile %3.2 ve %4.7 olarak bulundu. Alınan sonuçlara göre ülkemizde tularemi insan ve hayvanlarda varlığını sürdüren bir infeksiyondur. Ancak daha sağlıklı epidemiyolojik yorum yapabilmek için daha çok sayıda seruma ve farklı hayvan türleri ile çalışılmasına ihtiyaç bulunmaktadır. Sonuç olarak, ELISA ve konfirme edici Western blotting kombinasyonunun tulareminin serolojik tanısında kullanılabilecek uygun bir kombinasyon olduğu düşünülmektedir.
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- 2020
37. Molecular Characterization of Trichophyton Verrucosum Strains İsolated From Cattle by PCR-RFLP
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TEL, Osman Yaşar, primary, GÜLLÜ YÜCETEPE, Ayfer, additional, KESKİN, Oktay, additional, and ERDENLİĞ GÜRBİLEK, Sevil, additional
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- 2021
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38. Klinik semptomlu tavuk ve hindilerden patojen Mikoplazma türlerinin multipleks PCR ile tanımlanması.
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Yücetepe, Ayfer Güllü, Saytekin, Ahmet Murat, Tel, Osman Yaşar, Gürbilek, Sevil Erdenliğ, Özgünlük, İrfan, and Keskin, Oktay
- Abstract
Copyright of Etlik Veteriner Mikrobiyoloji Dergisi is the property of Veteriner Kontrol Merkez Arastirma Enstitusu and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
- Full Text
- View/download PDF
39. Sığırlarda Trichophytosis’in Teşhisinde ELISA’nın Kullanılabilirliğinin Araştırılması
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KAPLAN, Hülya, primary and KESKİN, Oktay, additional
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- 2020
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40. Yabani Kanatlılarda Salmonella Spp. İzolasyonu ve Serotiplendirilmesi
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ONBÜYÜK, Mehmet Ali, primary and KESKİN, Oktay, additional
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- 2020
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41. Kırmızılahanadan (Brassica oleracea L.) enkapsüle renk maddesi üretimindepüskürtmeli ve dondurarak kurutma yöntemlerinin etkisinin incelenmesi
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Keskin, Oktay, Baltacıoğlu, Cem, and Gıda Mühendisliği Anabilim Dalı
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Renk maddesi ,Anthocyanin ,Kırmızılahana ,Spray drying ,Dondurarak kurutma ,Enkapsülasyon ,Antosiyanin ,Püskürtmeli kurutma ,Antioksidan ,Colorant matter ,Food Engineering ,Freeze drying ,Encapsulation ,Antioxidant ,Microencapsulation ,Red cabbage ,Gıda Mühendisliği - Abstract
Bu çalışmada kırmızılahanadan (Brassica oleracea L.) elde edilen renk maddesinin enkapsülasyon yöntemi ile stabilitesinin arttırılması ve uygulanan farklı kurutma yöntemlerinin toz renk maddesinin antioksidan kapasitesi ve antosiyanin içeriği üzerine etkisi incelenmiştir. Elde edilen toz üründe püskürtmeli kurutucu ve enkapsülasyon uygulaması ile verim %2,51'den %9,20'ye, dondurarak kurutma da ise 24,20'den 34'e çıkarılmıştır. Toz üründe yapılan fiziksel analizlerden akabilirlik ve yapışabilirlik değerleri sırasıyla %17 ve 1,21 olarak hesaplanmıştır. Yapılan enkapsülasyon işleminden sonra L*, a* ve C* değerlerinde artış gözlenmiştir. Antioksidan aktivite değerini ölçmede kullanılan IC50 değeri zamanla toz ürünlerde artış göstermiştir. IC50 değeri enkapsüle edilmiş püskürtme kurutulmuş örneklerde %25 artış gösterirken dondurularak kurutulan örneklerde %34,91 artış gözlenmiştir. Kurutma yönteminin enkapsüle edilen toz örneklerde toplam monomerik antosiyanin içeriği üzerine etkisi incelendiğinde dondurularak kurutulan örneklerde %11,60 azalma gözlenirken, püskürtme yöntemi ile kurutulan örneklerde %29,93 azalma gözlenmiştir., In this study, the stability of colorant obtained from red cabbage (Brassica oleracea L.) by encapsulation method and the effect of different drying methods on the antioxidant capacity and anthocyanin content of powder colorant were investigated. Powder product obtained by spray dryer and encapsulation application yield from 2.51% to 9.20%, freeze drying was also increased from 24.20% to 34%. Flowability and stickability values were calculated as 17% and 1.21% from physical analysis of powder product, respectively. After the encapsulation process, L *, a * and C * values increased. The IC50 value used to measure the antioxidant activity value increased over time in powder products. The IC50 value increased by 25% in encapsulated spray-dried samples, while the freeze-dried samples increased by 34.91%. When the effect of drying method on total monomeric anthocyanin content of encapsulated powder samples was examined, a decrease of 11.60% was observed in freeze-dried samples, 29.93% reduction was observed in spray dried samples.
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- 2019
42. İki ceylanda (Gazella subgutturosa) görülen parazitik pnömoni ve Trueperella pyogenes ve Candida albicans ile ilişkili nekrotik-purulent bronkopnömoni.
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Yılmaz, Rahşan, Keskin, Oktay, and Yücetepe, Ayfer Güllü
- Abstract
Copyright of Veterinary Journal of Mehmet Akif Ersoy University is the property of Veterinary Journal of Mehmet Akif Ersoy University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
- Full Text
- View/download PDF
43. Vorhandensein von Staphylococcus aureus, Staphylokokken Enterotoxinen und antimikrobielle Resistenzen in traditionell hergestelltem Rohmilchkäse
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Gürbüz, Semra, Keskin, Oktay, Erdenliğ Gürbilek, Sevil, Tel, Osman Yaşar, Yiğin, Akın, Demirci, Mehmet, Demir, Cemir, and Hassan, Hala
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S. aureus, staphylococcal enterotoxins, enterotoxin genes, antimicrobial resistance, raw milk cheese - Abstract
The objectives of this study was to investigate the presence of Staphylococcus aureus, distribution of classical staphylococcal enterotoxin (SE) SEA to SEE, relevant gene/s and antimicrobial resistance pattern of S. aureus isolated from traditionally produced raw milk cheeses. A total of 106 fresh white cheese samples were examined. The 25 (23.6 %) of 106 cheese samples were found to be contaminated with coagulase positive staphylococci (CPS). From 52 isolates identified as S. aureus, one or more SEs was detected in 38.4 % of the isolates by ELISA whereas one or more se genes were detected in 50 % of the isolates by RT PCR. SEE (75 %) and see gene (61.5 %) were detected most frequently, whereas SED and sed gene were not detected in any isolates. Overall, 63.5 % of isolates were resistant to antimicrobial agents with 59.6 %, 13.5 %, 5.8 %, 5.8 % and 3.8 % of the isolates were resistant to penicillin, erythromycin, tetracycline, cefoxitin and kanamycin, respectively. The results of this study have revealed that cheeses made from raw milk were highly contaminated with S. aureus, therefore, creates a risk for public health due to the presence of enterotoxins as well as resistant strains against antimicrobial agents.
- Published
- 2018
44. Loop Mediated Isothermal Amplification (LAMP) Yöntemi ile Sığır Brusellozunun Hızlı Teşhisi
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TEL, Osman Yaşar, ERDENLİĞ GÜRBİLEK, Sevil, and KESKİN, Oktay
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Bruselloz,LAMP (Loop Mediated İsothermal Amplification),moleküler teşhis,sığır ,Brucellosis,cattle,LAMP (Loop Mediated Isothermal Amplification),molecular diagnosis - Abstract
Brucellosis is a zoonoticinfection that cause abortions and infertility in livestock by effecting ofespecially genital organs like uterus, testes, mammary glands. In this study,it was aimed to use loop mediated isothermal amplification (LAMP), which is sensitiveand specific molecular technique that based on amplification of BCSP31 gene,which is unique to organisms in the genus Brucella. In this study, a total of57 materials including 20 milk samples and 37 aborted fetuses were tested byLAMP and classical bacterial culture for diagnosis of brucellosis. Thirteen(22.8%) out of 57 samples were found positive by LAMP while 10 samples (17.5%)yielded bacterial growth. As a conclusion, LAMP could be used satisfactorilyfor the diagnosis of brucellosis and the sensitivity can be increased by usingtwo techniques together. We concluded that the bacterial culture is still goldstandard for diagnosis of brucellosis although the sensitivity and specificityof the LAMP is high. , Bruselloz,sığır, koyun, keçi, domuz ve koç gibi hayvanlarda, özellikle, testis, meme,uterus gibi genital organlara yerleşerek yavru atmalara ve infertiliteye nedenolan zoonoz bir hastalıktır. Bu çalışmada bruselloz hastalığının çabuktanısında BCSP31 genini temel alan duyarlı ve özgül özel bir moleküler teknikolan ilmek aracılı bir gen çoğaltma tekniğinin (loop mediated isothermalamplification), kullanılması amaçlandı. Bruselloz şüpheli hayvanlardan alınan20 adet süt ve 37 adet aborte fötüs olmak üzere toplam 57 adet materyal LAMP vekültür yöntemiyle incelendi. İncelenen materyallerin 13 adedi (%22,8) LAMP ilepozitif bulunurken, kültür yöntemi ile örneklerin 10’undan (%17,5) etken izoleve identifiye edildi. Sonuç olarak, LAMP tekniğinin brusellozun teşhisindegüven ile kullanılabileceği, LAMP testiyle beraber kültür yöntemininuygulanmasının teşhis sensitivitesinin artırılmasında yararlı olduğu saptandı.LAMP testinin spesifite ve sensitivitesinin yüksek olmasına rağmen hala kültüryönteminin altın standart olarak geçerliliğini sürdürdüğü düşünülmektedir.
- Published
- 2018
45. Şanlıurfa’da Safkan Arap Atlarında Borrelia burgdorferi Seropozitifliğinin Belirlenmesi
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DEMİR, Ömer, primary and KESKİN, Oktay, additional
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- 2019
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46. Brucella canis coinfections in patients with brucellosis
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Koruk, Süda Tekin, Sarıgül, Figen; Erdenliğ-Gürbilek, Sevil; Sayan, Murat; Güdücüoğlu, Hüseyin; Keskin, Oktay, Koç University Hospital, Koruk, Süda Tekin, Sarıgül, Figen; Erdenliğ-Gürbilek, Sevil; Sayan, Murat; Güdücüoğlu, Hüseyin; Keskin, Oktay, and Koç University Hospital
- Abstract
Objective: laboratory diagnosis of Brucella canis infections cannot be made by classical serological methods as readily as infections of other species of Brucella pathogenic for humans. Therefore, the information about B. canis infections in Turkey is limited. In this study, we aimed to detect presence of B. canis coinfections in humans who were diagnosed as brucellosis. Methods: study has been designed as retrospective cross-sectional. A total of 566 serum samples collected from patients who had confirmed brucellosis and were living in cities of the Eastern and Southeastern Anatolia regions of Turkey were tested with rapid slide agglutination test (RSAT), 2-mercaptoethanol RSAT (2ME-RSAT) and microplate agglutination test (MAT) using B. canis M-, a less mucoid variant, as the antigen. Results: out of the samples tested, 142 (25%) and 49 (8.7%) were positive by RSAT and 2ME-RSAT, respectively, and this difference was significant (p= 0.05). In total, 55/ 566 (9.7%) samples were MAT-positive. Differences between 2ME-RSAT and MAT were not statistically significant (p>0.05). Conclusions: our B. canis coinfection prevalence data demonstrates that serological testing for B. canis should be performed in Turkey. It was also concluded that there are some advantages for using MAT, and this technique may be preferable over 2ME-RSAT. / Amaç: Brucella canis infeksiyonlarının laboratuvar tanısı, insanlarda hastalık yapan diğer Brucella türlerinin infeksiyonlarındaki gibi klasik serolojik yöntemlerle konulamamaktadır. Bu nedenle Türkiye’de B. canis infeksiyonları hakkındaki bilgiler kısıtlıdır. Bu çalışmada, Türkiye’de bruselloz tanısı almış hastalarda B. canis koinfeksiyonu varlığının saptanması amaçlanmıştır. Yöntemler: çalışma retrospektif kesitsel olarak tasarlandı. Türkiye’nin Doğu ve Güneydoğu Anadolu bölgelerinde bruselloz tanısı almış 566 hastanın uygun koşullarda saklanmış serum örneği, zayıf mukoid B. canis M- varyant suşundan elde edilen antijenin kullanıldığı hızlı lam, NA
- Published
- 2018
47. Veteriner Epidemiyoloji’de Sistematik Derleme ve Meta-analizi
- Author
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ARSERİM, Neval Berrin and KESKİN, Oktay
- Subjects
Veterinary ,Veterinary,epidemiology,systematic review,meta-analysis ,Veteriner Hekimlik ,Veteriner,epidemiyoloji,sistematik derleme,meta-analizi - Abstract
Meta-analysis is a statistical method which combines the results of many independent studies carried out in differentregions and times on a certain subject as qualitative and quantitative and aids to reach a consensus. In this study it is aimed to usemeta-analysis method in solution of determined problems in veterinary microbiology. For this reason two sample problem weredetermined as existence of Crimean-Congo Hemorrhagic Fever (CCHF) virus in farm animals, and confidence in detectingTaylorella equigenitalis by culture and PCR methods in horses. The databases (Pub Med, Science Direct, ISI Web, Proquest,Summon etc.) that Dicle University has the membership were used. In both hypotheses, books or book sections, the literatureswithout English language, reviews were investigated, and duplications were extracted from the determined literatures and it wastried to obtain the data which will be used in the meta-analysis by reinvestigating the remaining literatures. However the data, onwhich meta-analysis can be done, aren't obtained in both hypotheses. It can be mentioned briefly that differences among animalspecies, the variety of the study methods, and difference among used statistical methods can be the reason of this. In conclusion it isrealized that the points which are mentioned above should taken in to account in the articles for using systematical review and meta-analysis commonly in studies associated with veterinary and animal health., Meta-analizi, belirli bir konuda farklı yer ve zamanlarda gerçekleştirilmiş birbirinden bağımsız çok sayıda çalışmanınsonuçlarını niteliksel ve niceliksel olarak birleştirmeye ve o konuda ortak bir yargıya ulaşmaya yardımcı olan istatistiksel biryöntemdir. Bu çalışmada veteriner mikrobiyolojide belirlenen problemlerin çözümünde meta-analiz yönteminin kullanılmasıamaçlanmıştır. Bu amaçla Kırım Kongo Kanamalı Ateşi virüsünün çiftlik hayvanlarında varlığı ve atlarda Taylorella equigenitalis’inkültür ve PCR metotlarıyla tespitinde sonuçların tutarlılığının incelenmesi olarak iki problem belirlenmiştir. Araştırmaya yönelikDicle Üniversitesi Kütüphanesi’nin üyesi olduğu veri tabanları (Pub Med, Science Direct, ISI Web, Proquest, Summon vb.)kullanılmıştır. Her iki hipotezde belirlenen literatürler, kitap ve/veya bölümleri, İngilizce olmayan literatürler, derleme ve tekrarlarayıklandıktan sonra okunarak meta analizinde kullanılacak verilerin elde edilmesine çalışıldı. Ancak her iki hipotezde de meta-analiziyapılabilecek veriler elde edilemedi. Bunun sebepleri olarak kısaca hayvan türlerinin farklılığı, çalışma metotlarının çeşitliliği veistatistiki metotların aynı olmamasından bahsedilebilinir. Sonuç olarak, veteriner hekimliğini ve hayvan sağlığını ilgilendirençalışmalarda daha yaygın olarak sistematik derleme ve meta-analizi uygulayabilmek için yayınlanan makalelerde yukarıdabahsedilen hususlara dikkat edilmesi gerektiği anlaşılmıştır.
- Published
- 2017
48. Bir Sığırcılık İşletmesinde Çoklu Antibiyotik Dirençli Pseudomonas aeruginosa Epidemisi
- Author
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KESKİN, Oktay, TEL, Osman Yaşar, and ARSERİM, Neval Berrin
- Subjects
Pseudomonas aeruginosa,çoklu direnç,sığır ,Veterinary ,Pseudomonas aeruginosa,multiresistance,cattle ,Veteriner Hekimlik - Abstract
It was applied to Harran University Veterinary Faculty Microbiology Department because of the fact thatclinical disorders such as enteritis, purulent skin wounds, polyarthritis, and abscess and a 2424 %(60/250) mortalityratio seen among lambs in a private milk enterprise which was consisted of a 1000 imported Holstein cattle’s. Agentwas identified as P. aeruginosa as a result of bacteriological examination of collected clinic materials. Ampicillin,amoxicillin, amoxicillin/clavulanic acid, cefoxitin, ciprofloxacin, erythromycin, gentamycin, imipenem, norfloxacin,oxacillin, penicillin, rifampin, streptomycine, tetracycline, trimethoprim-sulfamethoxazol ve vancomycin were testedby Kirby Bauer Disk Diffusion test for determining antibiotic sensitivity of the obtained isolate. While it wasobtained sensitive to imipenem, any zone forming wasn’t seen to the rest of the antibiotics and it was accepted asresistant. As a result it was concluded that infections caused by P. aeruginosa which has multiple antibioticsresistivity can lead serious losses in bread stocks and laboratory examinations, and antibiotic sensitivity test areimportant for achieving treatment success. , İthal holştayn ırkı sığırlardan oluşan 1000 başlık özel bir süt işletmesinde buzağılarda görülen enteritis,irinli deri yaraları, poliartritis, apse gibi klinik bozukluklar ve % 24 (60/250) oranındaki ölümler nedeniyle HarranÜniversitesi Veteriner Fakültesi Mikrobiyoloji Anabilim Dalı’na başvuruldu. Alınan klinik materyallerinbakteriyolojik muayenesi sonucunda etken P. aeruginosa olarak identifiye edildi. Elde edilen izolatın antibiyotikduyarlılığını saptamak için Kirby Bauer Disk Diffüzyon yöntemi ile ampisilin, amoksisilin, amokisilin/klavulanikasit, sefoksitin, siprofloksasin, eritromisin, gentamisin, imipenem, norfloksasin, oksasillin, penisilin, rifampin,streptomisin, tetrasiklin, trimetoprim-sulfametoksazol ve vankomisin test edildi. İmipenem duyarlı olaraksaptanırken, diğer antibiyotiklerde zon oluşumu görülmedi ve dirençli olarak değerlendirildi. Sonuç olarak çokluantibiyotik direncine sahip P. aeruginosa suşlarının neden olduğu infeksiyonların işletmelerde ciddi kayıplaroluşturabileceği, tedavide başarı sağlamak için laboratuvar muayeneleri ve antibiyotik duyarlılık testinin önemliolduğu kanısına varıldı. 
- Published
- 2017
49. Sığır Brusellozunun Serolojik Teşhisinde Lateral Flow Temelli Hızlı Tanı Kiti Geliştirilmesi
- Author
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TEL, Osman Yaşar, KESKİN, Oktay, and ERDENLİĞ GÜRBİLEK, Sevil
- Subjects
Lateral Flow Assay,Cattle,Serologic diagnosis,Brucellosis ,Lateral Flow Test,Sığır,Serolojik teşhiş,Bruselloz - Abstract
Brusellosis caused by microorganisms ofBrucellagenus is a worldwide zoonotic infection seen in livestock and has serious risk for human and animal health and negative effect on animal production. The disease agents infect especially genital organs like uterus, testes, mammary glands and cause abortion and infertility in livestock. The aim of this study was to develop a rapid lateral flow test (LTF) for diagnosis cattle brucellosis. Sensitivity, specificity and diagnostic accuracy of LFT were evaluated by comparing the results with Rose Bengal Plate Test (RBPT), complement fixation test (CFT) and i-ELISA. Out of 91 serum samples 45 (49.5%), 44 (48.3%), 37 (40.7%) and 34 (37.4%) were found positive by RBPT, i-ELISA, CFT and LFT, respectively. Based on the results by CFT as reference test,sensitivity and specificity of LFT were found 92% and100%, respectively. As conclusion,LFT and RBPT gave similar results and it was thought that LFT is an easy, rapid and specific screening test for diagnosis cattle brucellosis in the field., Bruselloz, sığır, koyun, keçi, domuz ve koç gibi çiftlik hayvanlarında brusella grubu mikroorganizmaların sebep olduğu özellikle, testis, meme, uterus gibi genital organlara yerleşerek, yavru atmalara ve infertiliteye neden olan dünyanın birçok ülkesinde görülen insan ve hayvan sağlığını tehdit eden ve hayvansal üretim üzerine negatif etkileri olan önemli bir zoonozdur. Bu çalışma ile sığır brucellozisinin serolojik olarak çabuk tanısında kullanılacak bir LFT (Lateral flow test)’i geliştirmek amaçlandı. LFT’nin sensitivite, spesifisite ve tanısal doğruluğu, RBPT (Rose Bengal Plate Test), KFT (Komplement Fikzasyon Test) ve i-ELISA ile karşılaştırmalı olarak değerlendirildi. İncelen 91 serum örneğinin 44 (%48.3)’ü i-ELISA ile 34 (%37.4)’ü LFT, 45’i (%49.5) RBPT ile 37 (%40.7)’si KFT ile pozitif olarak saptandı. Komplement fikzasyon testi referans test kabul edilerek, LFT’nin sensitivitesi %92 ve spesifitesi %100 olarak bulundu. Sonuç olarak, LFT’nin, sığır brusellozun serolojik teşhisinde sahada kolayca uygulanabilecek hızlı sonuç alınan spesifik bir test olduğu sonucuna varıldı.
- Published
- 2017
50. Seroprevalence of Rhodococcus equi in horses in Israel
- Author
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Tirosh-Levy, Sharon, Gürbilek, Sevil E., Tel, Osman Y., Keskin, Oktay, and Steinman, Amir
- Subjects
rhodococcus equi ,lcsh:Veterinary medicine ,animal diseases ,parasitic diseases ,bacteria ,lcsh:SF600-1100 ,ELISA ,bacterial infections and mycoses ,horse - Abstract
Rhodococcus equi is a common cause of pneumonia in foals and has extensive clinical, economic and possibly zoonotic consequences. This bacterium survives well in the environment and may be considered as normal flora of adult horses. Certain strains of this bacterium are extremely virulent in foals, and early identification and intervention is crucial for prognosis. Rhodococcus equi is endemic in many parts of the world and occasionally isolated in Israel. This study was designed to evaluate R. equi seroprevalence in adult horses in Israel to indirectly indicate the potential level of exposure of susceptible foals. Sera were collected from 144 horses during spring 2011 and from 293 horses during fall 2014, and the presence of antibodies against virulent R. equi was detected by enzyme-linked immunosorbent assay. Equine seroprevalence of R. equi was found to be 7.6% in 2011 and 5.1% in 2014. Only one farm had seropositive horses in 2011, whereas several farms had seropositive horses in 2014. No significant risk factors for seropositivity were found. Rhodococcus equi appears to be endemic in Israel. This is the first survey of R. equi in Israel that provides information on the epidemiology of this important bacterium.
- Published
- 2017
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