Evaluation of the Performance of Diagnostic Methods of Canine Parvovirus-2 and Canine Enteric Coronavirus Infections Under Different Storage Conditions and Determination of Molecular Characterization
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Tarih
2023 Aralık
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Selçuk Üniversitesi
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Amaç: Bu araştırma, köpeklerde CPV ve CCoV enfeksiyonlarını hızlı kit ve PCR ile karşılaştırmalı olarak tespit etmek ve Konya bölgesindeki bu enfeksiyonların moleküler karakterizasyonunu belirlemek amacıyla gerçekleştirilmiştir. Ayrıca, enfeksiyon tanısı için taze veya dondurulmuş-çözülmüş dışkı sonrası tanı testlerinin duyarlılık ve özgüllük oranlarının belirlenmesi amaçlanmıştır. Gereç ve Yöntem: Dışkı örnekleri, barınakta ishal semptomları gösteren, aşılanmamış, 0-12 aylık 50 köpekten toplandı. Örnekler CPV ve CCoV yönünden hızlı test ve PCR testi ile incelendi. Örnekler dondurma-çözdürme işleminden sonra tekrar aynı testler ile kontrol edildi. Bulgular: CPV, hızlı test ve PCR ile sırasıyla 2 ve 29 taze dışkı örneğinde, CCoV ise 14 ve 28 örnekte pozitif olarak teşhis edilmiştir. Dondurma-çözme prosedüründen sonra CPV pozitif örneklerde değişiklik olmazken, CCoV 10 örnekte ve 28 örnekte hızlı test ve PCR ile pozitif olarak teşhis edilmiştir. CPV tanısında herhangi bir farklılık olmamasına rağmen, CCoV tanısında hızlı testin duyarlılığı dondurma-çözdürme prosedüründen sonra azalmıştır. Ayrıca CPV pozitif örneklerde sadece CPV-2b tipi tespit edilirken, CCoV pozitif örneklerde moleküler olarak hem GI hem de GII alt tipleri tespit edilmiştir. Sonuç olarak, hızlı testlerin CPV ve CCoV enfeksiyonlarının doğru teşhisi için duyarlı olmadığı görülmüştür. Öneri: Virolojik enfeksiyonların doğru teşhisi için moleküler tanı yöntemlerinin seçilmesinin ve taze numunelerin kullanılmasının önemi vurgulanabilir
Aim: This research was carried out to detect CPV and CCoV infections in dogs in comparison with rapid kit and PCR and to determine the molecular characterization of these infections in Konya region. Besides, it was aimed to determine the sensitivity and specificity rates of the diagnostic tests after fresh or freeze-thawed stool for infection diagnosis. Materials and Methods: Faecal samples were collected from 50 unvaccinated, 0-12 months old dogs with diarrhoea symptoms at the shelter. The samples were analysed for CPV and CCoV by rapid test and PCR test. After freezethawing, the samples were checked again with the same tests. Results: CPV was positively diagnosed by rapid test and PCR in 2 and 29 fresh stool samples, respectively, and CCoV in 14 and 28 samples. CPV positive samples did not change while CCoV was diagnosed as positive in 10 samples and 28 samples by rapid test and PCR, respectively, after the freeze-thaw procedure. Although there were no differences in the diagnosis of CPV, the sensitivity of the rapid test in the diagnosis of CCoV decreased after the freezethaw procedure. In addition, only CPV-2b type was detected in CPV positive samples and both GI and GII subtypes were detected in CCoV positive samples as molecular. In conclusion, it was observed that rapid tests are not sensitive for accurate diagnosis of CPV and CCoV infections. Conclusion: The importance of choosing molecular diagnostic methods and using fresh samples for accurate diagnosis of virological infections can be emphasized.
Aim: This research was carried out to detect CPV and CCoV infections in dogs in comparison with rapid kit and PCR and to determine the molecular characterization of these infections in Konya region. Besides, it was aimed to determine the sensitivity and specificity rates of the diagnostic tests after fresh or freeze-thawed stool for infection diagnosis. Materials and Methods: Faecal samples were collected from 50 unvaccinated, 0-12 months old dogs with diarrhoea symptoms at the shelter. The samples were analysed for CPV and CCoV by rapid test and PCR test. After freezethawing, the samples were checked again with the same tests. Results: CPV was positively diagnosed by rapid test and PCR in 2 and 29 fresh stool samples, respectively, and CCoV in 14 and 28 samples. CPV positive samples did not change while CCoV was diagnosed as positive in 10 samples and 28 samples by rapid test and PCR, respectively, after the freeze-thaw procedure. Although there were no differences in the diagnosis of CPV, the sensitivity of the rapid test in the diagnosis of CCoV decreased after the freezethaw procedure. In addition, only CPV-2b type was detected in CPV positive samples and both GI and GII subtypes were detected in CCoV positive samples as molecular. In conclusion, it was observed that rapid tests are not sensitive for accurate diagnosis of CPV and CCoV infections. Conclusion: The importance of choosing molecular diagnostic methods and using fresh samples for accurate diagnosis of virological infections can be emphasized.
Açıklama
Anahtar Kelimeler
CPV, CCoV, filogenetik analiz, metot karşılaştırılması, phylogenetic analysis, method comparison
Kaynak
Eurasian Journal of Veterinary Sciences
WoS Q Değeri
Scopus Q Değeri
Cilt
39
Sayı
4
Künye
Dik, I., Aslım, H. P., Bulut, O., (2023). Evaluation of the Performance of Diagnostic Methods of Canine Parvovirus-2 and Canine Enteric Coronavirus Infections Under Different Storage Conditions and Determination of Molecular Characterization. Eurasian Journal of Veterinary Sciences, 39(4), 156-163.
DOI: 10.15312/EurasianJVetSci.2023.412
