32 results on '"BABACAN, Orkun"'
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2. Characterization of Salmonella phages isolated from poultry coops and its effect with nisin on food bio‐control
- Author
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Unverdi, Aysegul, primary, Erol, Hilal Basak, additional, Kaskatepe, Banu, additional, and Babacan, Orkun, additional
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- 2024
- Full Text
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3. Investigating the presence and antibiotic susceptibilities of Escherichia coli O157 and Listeria monocytogenes in ruminant feces and feed in Balıkesir province.
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BABACAN, Orkun
- Subjects
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ESCHERICHIA coli O157:H7 , *ESCHERICHIA coli , *LISTERIA monocytogenes , *SILAGE , *RUMINANTS , *ANTIBIOTICS - Abstract
The aim of this study is to determine the presence, virulence factors, and antibiotic susceptibilities of E. coli O157 and L. monocytogenes in ruminant feces and feed. This study was carried out for the first time in Balıkesir province. Feces, pellet feed, and silage samples were analyzed simultaneously for E. coli O157 and L. monocytogenes using feces of one gram and feed of twenty-five grams according to ISO 16654:2001/Amd 1:2017 and ISO 11290- 1, respectively. 38 (38%) E. coli O157 strains were isolated and identified from a total of 100 ruminant feces. A total of 3 (3%) E. coli O157:H7 strains were detected by PCR from one hundred ruminant fecal samples. In the study, resistance to antibiotics increased, especially in E. coli O157 isolates. In this study, enterohaemolysin was the predominant virulence factor among the E. coli isolates, and it was thought that it was important for pathogenesis. The Sxt1 gene was higher than the Stx2 gene. A total of 24 L. monocytogenes strains were isolated from a total of 100 ruminant fecal samples and 50 silage samples. Three of these strains were isolated from silage samples taken from the farms, where L. monocytogenes was isolated from sheep feces. As a result, poor quality silage could be an important source of infection for listeriosis in Balıkesir province. Epidemiologically, poor quality silage was thought to be one of the sources of listeriosis. It was thought that ruminant feces played an important role as a reservoir in the spread and transmission of E. coli O157. The antibiotic resistance status of E. coli O157 and L. monocytogenes isolates should be monitored with epidemiological studies. [ABSTRACT FROM AUTHOR]
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- 2024
- Full Text
- View/download PDF
4. Tracking the footsteps of Burkholderia mallei: determination of the molecular differences and potential resistance genes.
- Author
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DÜLGER, Dilek, EKİCİ, Seda, DEMİRCİ, Mehmet, YİĞİN, Akın, and BABACAN, Orkun
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BIOLOGICAL weapons ,BURKHOLDERIA pseudomallei ,BURKHOLDERIA ,GENES ,PSEUDOGENES - Abstract
Background/aim: Chemical biological radiological nuclear threats are at an important point in the agenda of world health today, as they can cause mass deaths. B. mallei attracts attention as a potential biological warfare agent due to its features such as multidrug resistance, a rapid transmission mechanism via aerosol, the absence of a complete treatment protocol for the infection it causes, and the absence of an approved vaccine for protection against the bacteria. B. mallei suspect samples must be studied by experienced personnel in biosafety level III laboratories. B mallei is a difficult and troublesome pathogen to diagnose and many unknowns about B. mallei today. Therefore, the aim of the study was to determine the molecular differences and potential resistance genes of B mallei strains. Materials and methods: Determination of the molecular differences and potential resistance genes of B mallei strains with new bioinformatics approaches by comparatively examining the data of 29 B mallei strains, 10 of which were isolated from Türkiye, on the genome list of the National Biotechnology Information Center (NCBI). Results: According to the genome annotations of the origins, the origin containing the highest number of CDS which is 5172 was found as the 11th strain obtained in Türkiye in 1949. The origin with the highest number of pseudogenes was determined as 23,344 (China 7) origin. Two hundred and eighty-five pseudogenes found in this strain were obtained from a knee effusion in Myanmar. According to chromosome 2 data, B. mallei strain was determined as the most similar strain to ATCC 23344, line 11 with NCTC 10229 strain, and SAVP1 strain was determined as the least similar strain. When the antimicrobial resistance gene markers of the isolates included in the study were examined, amrA and amrB, qacG ade, Burkholderia pseudomallei Omp38 were found to be carrying. Conclusion: In terms of public health, it was thought that the data obtained as a result of our study about B mallei, which is defined as a biological weapon, is very valuable for creating treatment protocols to be applied to possible epidemics in the future. In addition, the available genetic epidemiological data of these strains belonging to a category that is dangerous to work with in a laboratory environment were reviewed. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
5. Investigation of Escherichia coli O157 and Listeria monocytogenes presence and antibiotic susceptibility isolated from ruminant feces and feeds in Balikesir province
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BABACAN, Orkun, primary
- Published
- 2022
- Full Text
- View/download PDF
6. First detection of carbapenem resistance in Enterobacteriaceae isolates isolated from dairy cows' mastitis infection in Türkiye.
- Author
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BABACAN, Orkun
- Subjects
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CARBAPENEMS , *COLISTIN , *ESCHERICHIA coli , *DAIRY cattle , *MASTITIS , *ENTEROBACTERIACEAE , *KLEBSIELLA oxytoca - Abstract
With this study, carbapenem resistance genes were declared for the first time in Enterobacteriaceae isolates isolated from dairy cows' mastitis infection in Türkiye. In the bacteriological examination of 212 milk samples, 14 (6.60%) E. coli, three (1.41%) Klebsiella oxytoca, and two (0.94%) Klebsiella pneumonia were isolated. At least two E. coli isolates were found to be resistant to all of the antibiotics used in the antibiogram test. The highest resistance was found against cefotaxime and amoxicillin in K. oxytoca isolates. According to the results of PCR targeting blaCTX-M, blaTEM, and blaSHV genes, the blaCTX-M gene was detected in one K. oxytoca and four E. coli isolates, which were found ESBL positive. According to the results of PCR targeting carbapenem and colistin resistance genes, the IMP gene was detected in four E.coli, one K. oxytoca, and one K. pneumonia isolates. OXA-48-like gene was detected in two E. coli isolates. This two E. coli isolates were also IMP gene positive. While NDM gene was detected in two E. coli, KPC gene was detected in one E. coli isolate. One of the colistin resistance genes, mcr-1 was detected in two E.coli strains with PCR. This study showed that ESBL production and carbapenem resistance in Enterobacteriaceae family strains to become prevalent and increasing, especially among E. coli isolates. Furthermore, identification of multiple antibiotic resistance in the isolates indicated that antibiotic resistance also spread rapidly and increased. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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- View/download PDF
7. Investigating the presence and antibiotic susceptibilities of Escherichia coli O157 and Listeria monocytogenes in ruminant feces and feed in Balıkesir province
- Author
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BABACAN, Orkun
- Subjects
Veterinary ,Veteriner Hekimlik ,E.coli O157 ,FECES ,listeria monocytogenes ,virulence factors - Abstract
In this study, which was conducted for the first time in Balıkesir, it was purposed to determine the existense, virulence factors and antibiotic susceptibility of Escherichia coli O157, which is zoonotic in ruminant feces and feed, and the pathogen Listeria monocytogenes, which causes diseases in humans and animals, and to use these results as epidemiological data in our province, region and country. Feces and animal feed samples were analyzed simultaneously for in order of E. coli O157 and L. Monocytogenes according to ISO 16654: 2001 / Amd 1: 2017 and ISO 11290-1. 38 E.coli O157 was isolated from a total of one hunderd stool samples. 18 L. monocytogenes were isolated from a total of one hunderd stool samples. 6 L. monocytogenes were isolated from 50 silage samples. Three of these isolates were isolated from faeces and silage samples taken from the same farm with L. monocytogenes isolates isolated from sheep feces. E. coli O157 could not be isolated from a total of 100 silage and feed samples. All L. monocytogenes isolates were susceptible to sulfamethoxazole / trimethoprim, tetracycline, streptomycin, meropenem and erythromycin. The highest resistance was detected against Sulbactam / ampicillin. 3 E. coli O157 isolates were found resistant to Gentamicin and 7 isolates to Tobramycin. 21 isolates were resistant to erythromycin, and 12 isolates were intermediate. According to PCR results of fliCH7, Stx1, Stx2, eaeA and EhlyA genes, EhlyA gene was found in 20 E. coli O157 isolates. Of these isolates, 4 were isolated from sheep feces and 16 from calf feces. The stx1 gene was found in a total of 5 E. coli O157 isolates, one from sheep feces and four from calf feces. EhlyA gene was also found in all isolates with stx1 gene. The stx2 gene was found in a total of 3 E. coli O157 isolates, one from sheep dung and two from calf dung. Intimin gene was found in 8 E. coli O157 isolates, two of which are sheep faeces and six calf faecal isolates. EhlyA gene was found in all isolates with intimin gene. In this study, enterohaemolysin is the predominant virulence factor among the isolates. Epidemiologically, silage was thought to be the main source of L. monocytogenes contamination, and recently, silage contamination continued in Balikesir.
- Published
- 2021
8. First detection of carbapenem resistance in Enterobacteriaceae from animal isolates in Turkey
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BABACAN, Orkun, primary
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- 2021
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9. Kedi ve köpeklerin ürogenital sistem infeksiyonlarından izole edilen Escherichia coli'lerin virulens faktörlerinin belirlenmesi
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BABACAN, Orkun, primary and İZGÜR, Müjgan, additional
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- 2021
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10. Antibiotic susceptibility and phylogenetic analyses for the origins and serotypes of Listeriamonocytogenes strains isolated from ice cream and cream cakes
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BABACAN, Orkun, primary
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- 2020
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11. İnek sütlerinde Listeria türlerinin varlığı ve antibiyotik direnci ile aerobik mezofilik bakteri sayısının belirlenmesi
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BABACAN, Orkun, primary
- Published
- 2020
- Full Text
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12. PCR detection of Mycobacterium genevanse DNA in fecal samples of caged birds
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BABACAN, Orkun, primary, BAŞ, Bülent, additional, and SAREYYÜPOĞLU, Barış, additional
- Published
- 2020
- Full Text
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13. Çiğ tavuk etlerinden izole edilen Salmonella spp. suşlarının antibiyotik duyarlılıklarının araştırılması
- Author
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BABACAN, Orkun and KARADENİZ, Hatice
- Subjects
Antibiyotik direnç,Salmonella,tavuk eti ,Veterinary ,Veteriner Hekimlik ,Antibiotic resistance,Chicken,Salmonella - Abstract
The aimof this study was to investigate the antibiotic susceptibility, resistancestatus and to determine the ESBL properties with Vitek in Salmonella spp. strains, which was isolated and identified from rawchicken meats. In this study, chicken meats were analyzed for Salmonella spp. isolation. As a result of isolation andidentification, a total of 35 Salmonellaspp. isolated. As a result of the antibiotic susceptibilitiestests, according to the results of Vitek 2 Compact AST GN 38, all isolates werefound to be resistant to amikacin, cephalexin, tobramycin, gentamycin andenrofloxacin. 29 (82.85%) isolates were found to be resistant to tetracyclineand nitrofurantoin. 20 (57.15%) and 21 (60%) isolates were found to beresistant to ampicillin and piperacillin respectively. In addition, extendedspectrum beta-lactamase was detected in 4 isolates. According to the results of disc diffusion method, all isolates werefound to be resistant against erythromycin. 34 (97.14%) of all isolates were found to be resistant against sulfonamidecompounds, 28 isolates (80%) were found to beresistant against ampicillin sulbactam and sulfamethoxazole/trimethoprim, 26isolates (74.28%) were found to be resistant against neomycin, 29 (82.85%)isolates were found to be resistant against oxytetracycline and tetracycline, 31 (88.57%), 17(48.57%), 10 (28.57%), 6 (17.14%) were found to be resistantagainst ofloxacin, florfenicol, amoxicillin, chloramphenicolrespectively. 24 (68.57%) and 6(17.14%) isolates were found to be intermediate (I-drug increased contactsensitive) and resistant tociprofloxacin, respectively. In view of these results, it was thought that, interms of public health, it could cause infection in people consumingcontaminated foods with multiple antibiotic resistance strains, antibioticscould not be effected due to multiple antibiotic resistance and increase in thenumber of resistant strains. Finally,it was thought that the studies on antibiotic resistance could be beneficial in terms of epidemiology, Bu çalışmada çiğ tavuk etlerinden izole edilen Salmonella spp. izolatlarınınantibiyotik duyarlılık ve direnç durumlarının araştırılması, Vitek ile GSBLözelliklerinin belirlenmesi amaçlandı. Çalışmada, gıda olarak paketli satışasunulan tavuk etleri Salmonella spp.izolasyonu amacıyla analiz edildi. İzolasyonve identifikasyon sonucunda toplam 35 Salmonellaspp. izole edildi. Antibiyotik duyarlılıklarının belirlenmesi amacıylayapılan testlerin sonucunda, Vitek 2 Compact AST GN 38 kartı sonuçlarına göreamikasin, sefaleksin, tobramisin, gentamisin ve enrofloksasine ise tüm suşlardirençli bulunurken, amoksisilin-klavulanik asite karşı tüm suşlar duyarlıbulundu. Tetrasiklin ve nitrofurantoine 29 (%82.85), ampisiline 20 (%57.15),piperasiline ise 21 (%60) izolat dirençli bulundu. Ayrıca 4 izolatta genişspektrumlu beta laktamaz tespit edildi. Disk difüzyon yöntemi sonuçlarına göreise, eritromisine karşı tüm izolatlar dirençli bulundu. Sülfonamidbileşiklerine karşı 34 (%97.14), ampisilin sulbaktam ve sülfametoksazol/trimetoprime 28 (%80), neomisine 26 (%74.28), oksitetrasiklin ve tetrasikline29 (%82.85), ofloksasine 31 (%88.57), florfenikole 17 (%48.57), amoksisiline 10(%28.57), kloramfenikole 6 (%17.14) izolat dirençli bulundu. Siprofloksasinekarşı 24 (%68.57) izolat orta (I) ve 6 (%17.14) izolat dirençli bulundu.Doksisikline karşı ise 18 (%51.42) izolat dirençli ve 9 (%25.71) izolat orta(I) bulundu. Enrofloksasine karşı ise 2 (%5.71) izolat dirençli ve 12 (%34.28)izolat orta (intermediate-I-ilaçla artmış temasta duyarlı) bulundu. Neomisinekarşı ise 6 (%17.14) suş orta bulundu. Bu sonuçlar göz önüne alındığında, halksağlığı açısından, çoklu antibiyotik direnci gösteren bu suşlarla kontaminegıdaları tüketen insanlarda infeksiyona neden olabileceği, antibiyotiklerinetki göstermeyebileceği ve dirençli suş sayısında artışların olabileceği veyayılabileceği düşünüldü. Son olarak, antibiyotik direnci konusunda yapılacakçalışmaların epidemiyolojik açıdan yararlı olabileceği düşünüldü.
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- 2018
14. Detection of virulence factors of Escherichia coli strains isolated from urogenital system infections in dogs and cats.
- Author
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BABACAN, Orkun and İZGÜR, Müjgan
- Published
- 2021
- Full Text
- View/download PDF
15. Investigation of antibiotic susceptibility of Salmonella spp. strains’ isolated from raw chicken meat
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BABACAN, Orkun, primary and KARADENİZ, Hatice, additional
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- 2019
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16. Determination of the presence and antibiotic resistance of Listeria species and aerobic mesophilic bacteria count of cow milks.
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BABACAN, Orkun
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- 2021
- Full Text
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17. Antibiotic susceptibility and phylogenetic analyses for the origins and serotypes of Listeria monocytogenes strains isolated from ice cream and cream cakes.
- Author
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BABACAN, Orkun
- Subjects
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ICE cream, ices, etc. , *LISTERIA monocytogenes , *ICINGS (Confectionery) , *CAKE , *NUCLEIC acids , *BACTERIOCINS , *CIPROFLOXACIN , *RIBOSOMAL RNA - Abstract
Listeria monocytogenes is a zoonotic bacterium which also infects humans. The aim of this study was to isolate this organism from cream cakes and ice cream and obtain 16S rRNA and hlyA gene sequences from isolates in order to perform phylogenetic analyses. Serotypes and antibiotic susceptibility were also determined. The cream cake and ice cream samples were examined for L. monocytogenes according to ISO 11290-1 and using the mini Vidas LMO 2 kit procedure. Antibiotic susceptibilities were investigated using the disc diffusion method according to the European Committee on Antimicrobial Susceptibility Testing (EUCAST) and the Clinical and Laboratory Standards Institute (CLSI) standards. The Sanger DNA sequencing method for phylogenetic analysis was used for L. monocytogenes isolates. A total of 16 (n =128, 12.50%) L. monocytogenes strains, 9 (12.16%) from cream cake samples and 7 (12.96%) from ice cream samples, were isolated. This was the first investigation involving sequencing of L. monocytogenes isolated from cream cakes and ice creams in Turkey. All isolates were susceptible to sulfamethoxazole/trimethoprim, tetracycline, streptomycin, gentamicin, meropenem, and erythromycin. The numbers of isolates resistant to sulbactam/ampicillin, penicillin G, chloramphenicol, and ampicillin were 16, 2, 1, and 1, respectively. Moreover, 3 isolates showed intermediate resistance to amikacin and 2 to ciprofloxacin. The hlyA gene sequences of 11 of the L. monocytogenesisolates isolated from milk were closely related to the hlyA gene sequences of the GenBank reference strains. The comparison of the 16s rRNA gene sequences of the L. monocytogenes strains with the GenBank reference serotypes identified 1 isolate as serotype 1/2c, 1 as serotype 1/2a, and 1 as serotype 4. Nucleic acid sequencing is useful for identification of L. monocytogenes. The 16S rRNAand hlyA sequences can be used to determine the origin and relationship between L. monocytogenes isolates, as well as the serotype. [ABSTRACT FROM AUTHOR]
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- 2020
- Full Text
- View/download PDF
18. Oregano bitkisinin bazı Salmonella serotipleri üzerine antibakteriyel etkinliğinin belirlenmesi
- Author
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BABACAN, Orkun, CENGİZ, Seyda, and AKAN, Mehmet
- Subjects
Antibacterial activity,Oregano,Salmonella ,Antibakteriyel etki,Oregano,Salmonella ,Veterinary ,Veteriner Hekimlik - Abstract
This study was performed to detect antibacterial effects of oregano on various Salmonella serotypes. The oregano extract were prepared for two different protocols. In the first protocol, disc diffusion method included antibiograms discs with different concentrations of oregano extract were used. Zone diameters were measured to be 15, 19 and 16 mm for Salmonella Gallinarum, Salmonella Enteritidis and Salmonella Typhimurium, respectively. In the second, oregano extract with different concentrations (20 and 30 µl/ml) were added into medium content and bacterial growth were evaluated. Colony counts for S. Tyhphimurium and S. Enteriditis were 952; 536 and 1600; 440 in 20 and 30 µl/ml concentrations of oregano extract, respectively. These results showed that oregano extract had antibacterial effect on Salmonella serotypes, Bu çalışma Oregano bitkisinin çeşitli Salmonella serotipleri üzerindeki antibakteriyel etkinliğinin belirlenmesi amacıyla yapıldı. Oregano bitki ekstraktı iki farklı protokole göre hazırlandı. İlk protokolde farklı yoğunluktaki oregano ekstraktları ile antibiyogram diskleri hazırlanarak disk difüzyon tekniği uygulandı. Oluşan zon çapları Salmonella Gallinarum için 15 mm, Salmonella Enteriditis için 19 mm, Salmonella Typhimurium için 16 mm olarak ölçüldü. İkinci protokolde ise yoğunlukları farklı oregano ekstraktları besiyerlerine eklenerek Salmonella cinsi bakterilerin bu besiyerlerinde üreme yoğunlukları karşılaştırıldı. S. Enteriditis için 20 µl/ml oregano içeren petride 1600 koloni sayılırken, 30 µl/ml oregano içeren petride 440 koloni sayımı yapıldı. S. Typhimurium için 20 µl/ml bulunan petride 952 koloni sayılırken, 30 µl/ml bulunan petride 536 koloni sayımı yapıldı. Sonuç olarak oregano ekstraktının Salmonella serotipleri üzerine antibakteriyel etkili olduğu belirlendi
- Published
- 2012
19. Tavuk dışkılarından Salmonella etkenlerinin konvansiyonel ve moleküler yöntemlerle teşhisi
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BABACAN, Orkun
- Subjects
Veterinary ,Veteriner Hekimlik ,Dışkı,Salmonella,tavuk,teşhis,Orkun BABACAN,2011,Etlik Veteriner Mikrobiyoloji Dergisi - Abstract
In poultry breeding, Salmonella infections cause productivity losses and deaths. Salmonellosis (paratyphi) is very important disase for human health and zoonoses in humans consumption from poultry and poultry products. In this review detection of Salmonellae from chicken faeces by conventional and molecular methods were evaluated., Salmonella infeksiyonları kanatlı hayvan yetiştiriciliğinde verim düşüklüğü ve ölümler sonucu ekonomik kayıplara neden olmaktadır. Salmonellozis (paratifo) kanatlı hayvanlar ve kanatlı hayvan ürünleri ile bulaşan zoonoz bir infeksiyon olması nedeni ile insan sağlığı açısından da önem taşımaktadır. Bu derlemede tavuk dışkılarından Salmonella etkenlerinin teşhisinde kullanılan konvansiyonel ve moleküler yöntemler değerlendirilmiştir
- Published
- 2011
20. Kedi ve Köpeklerden İzole Edilen Dermatofit Etkenlerinin Retrospektif Değerlendirilmesi
- Author
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BABACAN, Orkun, BAŞ, Bülent, MÜŞTAK, H.kaan, ŞAHAN, Özlem, TEKİN, Oya, and TORUN, Ebru
- Subjects
Etlik Veteriner Mikrobiyoloji Dergisi,Kedi,Köpek,Dermatofit,Retrospektif,İzolasyon,Orkun BABACAN,Bülent BAŞ,H.Kaan MÜŞTAK,Özlem ŞAHAN,Oya TEKİN,Ebru TORUN,2011 ,Veterinary ,Veteriner Hekimlik - Abstract
In this study, 420 skin scrapings and hair samples taken from 147 cats and 273 dogs sent from Ankara University Faculty of Veterinary Medicine Clinics to Department of Microbiology with dermatophytosis suspicion between the years 2006-2011 were investigated. Thirty four (23.1%) Microsporum spp. and 6 (4.0%) Trichophyton spp. were isolated from 147 samples taken from cats; 43 (15.7%) Microsporum spp. and 12 (4.3%) Trichophyton spp. were isolated from 273 samples taken from dogs. Comparison of seasonal isolation rates showed that the dermatophyte incidence in spring had higher isolation rates; 46.1% from cats and 34.0%; than the other seasons., Bu çalışmada 2006-2011 yılları arasında Ankara Üniversitesi Veteriner Fakültesi kliniklerinden Mikrobiyoloji Anabilim Dalı’na farklı mevsimlerde gönderilen dermatofitoz şüpheli kedi ve köpekten alınan toplam 420 deri kazıntısı ve kıl örneği dermatofit etkenleri yönünden incelendi. Kedilerden alınan 147 materyalin 34’ünden (%23.1) Microsporum spp. ve 6’sından (%4.0) Trichophyton spp.; köpeklerden alınan 273 materyalin 43’ünden (%15.7) Microsporum spp. ve 12’sinden (%4.3) Trichophyton spp. izole edildi. Dermatofitozis olgularına diğer mevsimler ile karşılaştırıldığında ilkbahar mevsiminde ve kedilerde %46.1, köpeklerde ise %34.0 olmak üzere daha yüksek oranda rastlandı.
- Published
- 2011
21. Tavuklarda Mycoplasma Gallisepticum İnfeksiyonunun Polimeraz Zincir Reaksiyonu (PCR) ile Teşhisi
- Author
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CENGİZ, Seyda, BABACAN, Orkun, DİNÇ, Gökçen, and AKAN, Mehmet
- Subjects
Veterinary ,Etlik Veteriner Mikrobiyoloji Dergisi,Tavuk,Mycoplasma Gallisepticum,PCR,Seyda CENGİZ,Orkun BABACAN,Gökçen DİNÇ,Mehmet AKAN,2011 ,Veteriner Hekimlik - Abstract
Mycoplasma gallisepticum causes important economic losses and it spreads vertically and horizontally in chickens. Although a lot of methods are used for detection of this bacterium, agents can be obtained and sensitive and rapid result can be achieved by PCR based diagnosis method regardless of isolation. In this study, trachea and tracheal swab samples collected from various broiler flocks were evaluated. 14 of 26 investigated flocks (%53,8) were found to be M.gallisepticum positive. 28 of all trachea samples from 14 flocks and tracheal swabs which were taken 5 (%19,2) flocks considered to be positive. This result showed that M.gallisepticum infections can be diagnosed rapidly and more specifically and more positive results can be achieved in tracheal organ samples than tracheal swabs., Mycoplasma gallisepticum tavuklarda önemli ekonomik kayıplara neden olarak, vertikal ve horizontal yayılım gösterir. Bu etkenin teşhisi için pek çok metod kullanılmasına rağmen PCR temelli teşhis metodları ile izolasyona gerek kalmadan infeksiyon izlenebilir, yüksek duyarlılıkta hızlı sonuç alınabilir. İncelenen 26 kümesin 14 (%53,8)’ü M.gallisepticum yönünden pozitif bulundu. Materyal orijini dikkate alındığında 14 broyler kümesten alınan trachea örneklerinin 28 adetinden pozitif sonuç alınırken bu kümeslere ait tracheal svab örneklerinden sadece 5 (%19,2) kümese ait olanlarda M.gallisepticum spesifik DNA varlığı saptandı. Bu bulgu özellikle örnekleme aşamasında mikoplazma infeksiyonu şüpheli kümeslerden hem trachea hem de svab örneklerinin alınmasının yararlı olduğunu gösterdi. Bu sonuçlar PCR metodunun kullanılması ile M.gallisepticum infeksiyonlarının daha kısa sürede ve daha spesifik olarak teşhis edilebileceğini ve trachea örneklerinin tracheal svab örneklerine göre daha fazla pozitiflik sağladığını göstermektedir.
- Published
- 2011
22. Detection of antibiotic susceptability of Esherichia coli strains isolated from urogenital system infections in dogs and cats
- Author
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BABACAN, Orkun, AKAN, Mehmet, and İZGÜR, Müjgan
- Subjects
Antibiotic susceptability,Cat,Dog,E. coli,Urogenital System Infections ,Antibiotic susceptability,Cat,Dog - Abstract
Bu çalışmada kedi ve köpeklerin ürogenital sistem infeksiyonlarından izole edilen Escherichia coli suşlarının antibiyotik duyarlılıklarının belirlenmesi amaçlandı. Bu amaçla Ankara Üniversitesi Veteriner Fakültesi Klinikleri ve özel hayvan hastanelerinden Ankara Üniversitesi Veteriner Fakültesi Mikrobiyoloji Anabilim Dalı’na teşhis amacıyla gönderilen köpeklere ait idrar, pyometra infeksiyonlarından alınan uterus içeriği ve prostat sıvısı ile kedilere ait idrar ve uterus içeriği olmak üzere toplam 110 materyalden izole edilen 45 E. coli suşu incelendi. Suşların antibiyotik duyarlılıklarının belirlenmesi amacıyla Clinical Laboratory Standards Instıtute’ün belirlediği standartlar kullanıldı. Genetik olarak tetracycline direncinin belirlenmesi amacıyla tet (A) ve tet (B) genlerini amplifiye eden primerler kullanılarak polimeraz zincir reaksiyonu (PCR) yapıldı. İzole edilen 45 suşun disk difüzyon tekniği ile yapılan antibiyogram testi sonucunda amoxicillin-clavulanic acid’e %84.4, cephalexin’e %88.8, cephalotine’e %53.3, ciprofloxacin’e %86.6, enrofloxacin’e %75.5, gentamicin’e %97.7, trimethoprim/sulphamethoxazole’e %68.8, nalidixic acid’e %64.4 duyarlı olarak bulundu. Tetracycline direncinin moleküler olarak incelendiği PCR sonucunda ise, 6 E. coli suşunda tet (A) ve tet (B) genlerinin varlığı tespit edildi, Antibiyotik Duyarlılığı, E. coli, Kedi, Köpek, Ürogenital Sistem
- Published
- 2011
23. Kedi ve köpeklerin ürogenital sistem infeksiyonlarından izole edilen Escherichia coli'lerin virulens faktörlerinin belirlenmesi
- Author
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Babacan, Orkun, İzgür, Müjgan, and Mikrobiyoloji (Veterinerlik) Anabilim Dalı
- Subjects
Veterinary Medicine ,Urogenital diseases ,Veteriner Hekimliği ,Dogs ,Mikrobiyoloji ,Urogenital system ,Escherichia coli ,Cats ,Infection ,Microbiology ,Polymerase chain reaction - Abstract
Bu çalışmada kedi ve köpeklere ait idrar, pyometra infeksiyonlarından alınan uterus içerikleri ve prostat içeriği örneklerinden izole edilen Escherichia coli suşlarının virulens faktörlerinin fenotipik ve genotipik olarak araştırılması ile izole edilen E. coli suşlarının antibiyotik duyarlılıklarının incelenmesi amaçlandı.İzole edilen 45 adet E. coli suşunda hemoliz, mannoz duyarlı ve mannoz dirençli hemaglütinasyon, aerobaktin demir elde etme sistemi ve serum dirençliliği ile antibiyotik duyarlılıkları konvansiyonel yöntemlerle araştırıldı. Virulens faktörlerinden hemoliz, hemaglütinasyonda rol oynayan Tip 1 fimbria, P fimriya, S fimbria ve afimbrial adezinler, aerobaktin üretimi, serum dirençliliği, sitotoksik nekrotizan faktör, kolisin ve üropatojen spesifik protein sırasıyla bu özellikleri kodlayan hlyA, fimH, papC, sfaDE, afaBC, iucD, traT, cnf1, cvaC ve usp genlerinin varlığı yönünden PCR kullanılarak incelendi.Köpeklere ait 33 adet idrar örneğinden 23 (%69.6), 30 adet pyometra infeksiyonundan alınan uterus içeriğinden 15 (%50) ve 1 adet prostat içeriğinden 1 (%100) E. coli izole edildi. Kedilere ait 44 idrar örneğinden ise 5 (%11.3) ve 2 adet pyometra infeksiyonundan alınan uterus içeriğinden 1 (%50) olmak üzere toplam 45 (%40.9) E. coli izole edildi. İncelenen suşların %73.3'ü kanlı agarda hemoliz oluşturdu. Suşların %97.7'si hemaglütinasyon pozitif bulundu. Hemaglütinasyon pozitif bulunan suşların tamamı koyun eritrositleri MRHA gösterirken; tavuk eritrositleri ile 40 (tüm suşların %88.8'i) suş MRHA gösterdi. Tavuk ve koyun eritrositleri ile suşların tamamında MSHA saptanmadı. İncelenen tüm suşlar koyun serumuna karşı duyarlılık gösterdi, fakat sığır serumuna karşı suşların %26.6'sı dirençli bulundu. Aerobaktin üretimi suşların %20'sinde saptandı. İzole edilen E. coli suşlarının antibiyotik duyarlılıkları farklılık gösterdi. PCR ile yapılan incelemelerde ise hlyA geni suşların %73.3'ünde saptandı. fimH geni suşların %100'ünde; papC geni %71.1; sfaDE geni %82.2; afaBC geni %0 oranında saptandı. İncelenen suşlarda iucD, traT, usp, cnf1 ve cvaC genleri sırasıyla %20, %71.1, %84.4, %75.5 ve %11.1 oranlarında belirlendi.Sonuç olarak kedi ve köpeklerin ürogenital sistem infeksiyonlarında E. coli'nin önemli bir rolü olduğu görüldü. Virulens faktörlerinin belirlenmesinde moleküler yöntemlerin de kullabileceği, ancak konvansiyonel yöntemlerle birlikte kullanılmasının yararlı olacağı belirlendi. Sağaltım seçeneklerinde antibiyotik duyarlılık testlerinin önemli olduğu görüldü. The aim of this study was to investigate virulence factors with phenotypic and genotypic methods and also detection of antibiotic susceptibility in Escherichia coli isolates from urinary tract infections, uterus contents from pyometra infections and prostate contents from dogs and cats.In this study, haemolysis, mannose-sensitive and mannose-resistant hemagglutination, aerobactin production, serum resistance and antibiotic susceptibility were investigated phenotypically in 45 E. coli strains. Furthermore, haemolysis, type 1, P, S fimbriae and afimbrial adhesins which play a role in hemagglutination, aerobactin production, cytotoxic necrotizing factor, serum resistance, colisin and uropathogen spesific protein respectively. Genes are encoding those virulence factors, hlyA, fimH, papC, sfaDE, afaBC, iucD, cnf1, traT, cvaC ve usp were analysed by PCR techniques.From dogs E. coli was isolated from 23 (69.6%) out of 33 urine specimens, 15 (50%) out of 30 uterus contents from pyometra infections and 1 (100%) out of a prostate content. From cats E. coli was isolated from 5 (11.3%) out of 44 urine specimens and 1 (50%) out of 2 uterus contents from pyometra infections. Of the examined strains 73.3% created haemolysis on blood agar. Of all strains, 97.7% were detected hemagglutination positive. All hemagglutination positive strains were detected MRHA with sheep erythrocytes; 40 (88.8% of all strains) strains were detected MRHA with chicken erythrocytes. MSHA were not detected with sheep and chicken erythrocytes in all strains. All investigated strains showed that sensitivity to sheep sera, but of all strains 26.6% were detected to be resistant to bovine sera. Of the all strain 20% were detected aerobactin production. All investigated strains showed differences on antibiotic susceptibility test. In the examination with PCR, hlyA gene was detected in 73.3% of all strains. fimH was found 100%, papC 71.1% , sfaDE 82.2% and afaBC 0% were detected in all strains. All isolated strains, iucD, traT, usp, cnf1 and cvaC genes respectively 20%, 71.1% , 84.4%, 75.5% and 11.1% were detected.As a conclusion, findings of the studies in the thesis showed that E. coli plays an important role in urogenital system infections in dogs and cats. It is also thought that molecular methods performed for the investigation of virulence factors should be used with convensional methods to obtain the most credible results. Antibiotic susceptibility tests have critical importance for the determination of treatment options. 95
- Published
- 2011
24. Kedi ve köpeklerde üropatojenik Escherichia coli infeksiyonları
- Author
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İZGÜR, Müjgan and BABACAN, Orkun
- Subjects
Veterinary ,E. coli,kedi,köpek,üropatojenik.,2010,Müjgan İZGÜR,Orkun BABACAN,Etlik Veteriner Mikrobiyoloji Dergisi ,Veteriner Hekimlik ,Cat,dog,E. coli,uropathogenic - Abstract
Escherichia coli strains that cause urinary tract infections are named as uropathogenic E. coli (UPEC) or extraintestinal pathogenic E. coli (ExPEC). Uropathogenic E. coli is an opportunistic pathogen in human and animals especially in dogs and cats. E. coli is the most commonly isolated agent from urine of dogs and cats with urinary system infection. Besides the general features of known, uropathogenic E. coli has serum resistance, virulence factors and antigenic factors. These factors also play a role in pathogenesis., Üriner sistem infeksiyonlarına neden olan Escherichia coli suşları üropatojenik E. coli (UPEC) veya ekstraintestinal patojenik E. coli (ExPEC) olarak isimlendirilirler. Üropatojenik E. coli’ler insan ve hayvanlarda özellikle de kedi ve köpeklerde fırsatçı patojen olarak çeşitli hastalıklara neden olurlar. E. coli üriner sistem infeksiyonlarında en sık rastlanan patojendir. Üropatojenik E. coli’lerin bilinen genel özelliklerinin yanı sıra patogeneziste rol oynayan virülens faktörleri, serum direnci ve antijenik özellikleri bulunmaktadır.
- Published
- 2010
25. Tavuklarda Mycoplasma gallisepticum infeksiyonunun Polimeraz Zincir Reaksiyonu PCR ile teşhisi
- Author
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DİNÇ, GÖKÇEN, CENGİZ, SEYDA, AKAN, MEHMET, and BABACAN, ORKUN
- Published
- 2010
26. Phylo-typing of clinicalEscherichia coliisolates originating from bovine mastitis and canine pyometra and urinary tract infection by means of quadruplex PCR
- Author
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Müştak, Hamit Kaan, primary, Günaydin, Elçin, additional, Kaya, İnci Başak, additional, Salar, Merve Özdal, additional, Babacan, Orkun, additional, Önat, Kaan, additional, Ata, Zafer, additional, and Diker, Kadir Serdar, additional
- Published
- 2015
- Full Text
- View/download PDF
27. Diagnosis of Mycoplasma bovis Infection in Cattle by ELISA and PCR
- Author
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BABACAN, Orkun, primary, AKAN, Mehmet, additional, TORUN, Ebru, additional, MÜŞTAK, Hamit Kaan, additional, and ÖNCEL, Taner, additional
- Published
- 2014
- Full Text
- View/download PDF
28. Phylo-typing of clinical Escherichia coliisolates originating from bovine mastitis and canine pyometra and urinary tract infection by means of quadruplex PCR
- Author
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Müştak, Hamit Kaan, Günaydin, Elçin, Kaya, İnci Başak, Salar, Merve Özdal, Babacan, Orkun, Önat, Kaan, Ata, Zafer, and Diker, Kadir Serdar
- Abstract
Background:Escherichia coliis one of the major causative agents of bovine mastitis worldwide, and is typically associated with acute, clinical mastitis. Besides this, E. colistrains which belong to the extra-intestinal pathogenic group are also the major cause of urinary tract infections and pyometra in dogs.Objectives:In this study, it was aimed to investigate phylo-groups/subgroups in 155 E. coliisolates obtained from acute bovine mastitis, 43 from urinary tract infections of dogs and 20 from canine pyometra by a formerly described triplex PCR and recently described new quadruplex polymerase chain reaction (PCR) method.Results:Group A1(n= 118; 76%) and B1 (n= 71; 46%) were found to be the most prevalent groups by triplex and quadruplex PCR assays in mastitis isolates, respectively. Phylo-typing of 43 urinary tract isolates also revealed that most of the isolates belonged to A1(n= 23; 54%) by triplex and B2 (n= 36; 84%) by quadruplex PCR assays. The isolates assigned as group A1(n= 17; 85%) by triplex PCR could not be classified by quadruplex PCR in pyometra isolates.Conclusions:The results support the hypothesis that E. colistrains isolated from bovine mastitis cases are environmental. Also, groups C, E and F were identified as new phylo-groups for the first time in acute bovine mastitis cases. The comparison of triplex PCR with quadruplex PCR results revealed that most of the groups assigned in triplex PCR were altered by quadruplex PCR assay.
- Published
- 2015
- Full Text
- View/download PDF
29. Diagnosis of Mycoplasma bovis Infection in Cattle by ELISA and PCR.
- Author
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AKAN, Mehmet, BABACAN, Orkun, TORUN, Ebru, MÜŞTAK, Hamit Kaan, and ÖNCEL, Taner
- Subjects
- *
CATTLE diseases , *MYCOPLASMA , *ENZYME-linked immunosorbent assay , *MYCOPLASMATACEAE , *BLOOD plasma - Abstract
Mycoplasma bovis is one of the most pathogenic agents in the Mycoplasma species that cause disease in cattle. In particular, young calves at less than 4 months of age are a considerable risk from pneumonia caused by M. bovis. In this study, we investigated M. bow's from tracheal swabs and blood sera of cattle which showed respiratory symptoms. A total of 127 tracheal swab samples were collected from seven different farms in Turkey. In addition, a total 254 acute and convelance sera were collected from the same cattle at intervals 15 days. The materials were collected from cattle between 3-12 months of age that reported respiratory problems such as broncho-pneumonia with coughing, depression, lethargy and fever. Mycoplasma bovis was investigated in tracheal swab samples and sera collected from the cattle by using PCR and ELISA respectively. The PCR results showed that M. bovis infections were positive in 4 different farms. The rates ranged from 5.3% (1/19) to 37.5% (6/16). Out of the 127 cattle examined, 45 (35.4%) were positive for M. bovis antibodies, while 82 (64.6%) were found to be negative. All PCR positive cattle were also found to be positive by ELISA. However by using ELISA, M. bovis infections were positive in all farms and the ELISA positive rates ranged from 20% (2/10) to 68.8% (11/16). Considering these results, in especially chronic infections, ELISA is a more useful method than PCR to detect M. bovis infection. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
30. The preventive role of transurethral antibiotic delivery in a rat model.
- Author
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Ozok, Hakki U., Ekim, Okan, Saltas, Hakan, Arikok, Ata T., Babacan, Orkun, Sagnak, Levent, Topaloglu, Hikmet, and Ersoy, Hamit
- Published
- 2012
- Full Text
- View/download PDF
31. Tracking the footsteps of Burkholderia mallei: determination of the molecular differences and potential resistance genes.
- Author
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Dülger D, Ekici S, Demirci M, Yiğin A, and Babacan O
- Subjects
- Humans, Drug Resistance, Bacterial genetics, Turkey, Burkholderia mallei genetics
- Abstract
Background/aim: Chemical biological radiological nuclear threats are at an important point in the agenda of world health today, as they can cause mass deaths. B. mallei attracts attention as a potential biological warfare agent due to its features such as multidrug resistance, a rapid transmission mechanism via aerosol, the absence of a complete treatment protocol for the infection it causes, and the absence of an approved vaccine for protection against the bacteria. B. mallei suspect samples must be studied by experienced personnel in biosafety level III laboratories. B mallei is a difficult and troublesome pathogen to diagnose and many unknowns about B. mallei today. Therefore, the aim of the study was to determine the molecular differences and potential resistance genes of B mallei strains., Materials and Methods: Determination of the molecular differences and potential resistance genes of B mallei strains with new bioinformatics approaches by comparatively examining the data of 29 B mallei strains, 10 of which were isolated from Türkiye, on the genome list of the National Biotechnology Information Center (NCBI)., Results: According to the genome annotations of the origins, the origin containing the highest number of CDS which is 5172 was found as the 11th strain obtained in Türkiye in 1949. The origin with the highest number of pseudogenes was determined as 23,344 (China 7) origin. Two hundred and eighty-five pseudogenes found in this strain were obtained from a knee effusion in Myanmar. According to chromosome 2 data, B. mallei strain was determined as the most similar strain to ATCC 23344, line 11 with NCTC 10229 strain, and SAVP1 strain was determined as the least similar strain. When the antimicrobial resistance gene markers of the isolates included in the study were examined, amrA and amrB , qacG ade, Burkholderia pseudomallei Omp38 were found to be carrying., Conclusion: In terms of public health, it was thought that the data obtained as a result of our study about B mallei , which is defined as a biological weapon, is very valuable for creating treatment protocols to be applied to possible epidemics in the future. In addition, the available genetic epidemiological data of these strains belonging to a category that is dangerous to work with in a laboratory environment were reviewed., (© TÜBİTAK.)
- Published
- 2023
- Full Text
- View/download PDF
32. Phylo-typing of clinical Escherichia coli isolates originating from bovine mastitis and canine pyometra and urinary tract infection by means of quadruplex PCR.
- Author
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Müştak HK, Günaydin E, Kaya İB, Salar MÖ, Babacan O, Önat K, Ata Z, and Diker KS
- Subjects
- Animals, Bacterial Typing Techniques veterinary, Cattle, Dog Diseases microbiology, Dogs, Escherichia coli isolation & purification, Escherichia coli Infections epidemiology, Escherichia coli Infections microbiology, Escherichia coli Proteins genetics, Female, Mastitis, Bovine microbiology, Phylogeny, Polymerase Chain Reaction veterinary, Pyometra epidemiology, Pyometra microbiology, Sequence Analysis, DNA veterinary, Turkey epidemiology, Urinary Tract Infections epidemiology, Urinary Tract Infections microbiology, Dog Diseases epidemiology, Escherichia coli classification, Escherichia coli genetics, Escherichia coli Infections veterinary, Mastitis, Bovine epidemiology, Pyometra veterinary, Urinary Tract Infections veterinary
- Abstract
Background: Escherichia coli is one of the major causative agents of bovine mastitis worldwide, and is typically associated with acute, clinical mastitis. Besides this, E. coli strains which belong to the extra-intestinal pathogenic group are also the major cause of urinary tract infections and pyometra in dogs., Objectives: In this study, it was aimed to investigate phylo-groups/subgroups in 155 E. coli isolates obtained from acute bovine mastitis, 43 from urinary tract infections of dogs and 20 from canine pyometra by a formerly described triplex PCR and recently described new quadruplex polymerase chain reaction (PCR) method., Results: Group A1 (n = 118; 76%) and B1 (n = 71; 46%) were found to be the most prevalent groups by triplex and quadruplex PCR assays in mastitis isolates, respectively. Phylo-typing of 43 urinary tract isolates also revealed that most of the isolates belonged to A1 (n = 23; 54%) by triplex and B2 (n = 36; 84%) by quadruplex PCR assays. The isolates assigned as group A1 (n = 17; 85%) by triplex PCR could not be classified by quadruplex PCR in pyometra isolates., Conclusions: The results support the hypothesis that E. coli strains isolated from bovine mastitis cases are environmental. Also, groups C, E and F were identified as new phylo-groups for the first time in acute bovine mastitis cases. The comparison of triplex PCR with quadruplex PCR results revealed that most of the groups assigned in triplex PCR were altered by quadruplex PCR assay.
- Published
- 2015
- Full Text
- View/download PDF
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