Journals / Ankara Üniversitesi Veteriner Fakültesi Dergisi / 2010 / Cilt: 57 - Sayı: 3

Role of apoptosis in pathogenesis of infectious pancreatic necrosis in rainbow trout (Oncorhynchus mykiss Walbaum, 1792)

Gökkuşağı alabalıklarında (Oncorhynchus mykiss Walbaum, 1792) enfeksiyöz pankreatik nekrozun patogenezisinde apoptozisin rolü

Pages
191–196
Publication Date
2022-10-12
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

In conclusion, our results suggest that apoptosis, a cell death mechanism, could be appeared in favor of IPN virus in pathogenesis of the disease in field conditions.

📌 3 Key Takeaways

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Objective & Hypothesis:In this study, total of 12 rainbow trout (average weight 5 g) from a fish farm were examined.
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Key Findings & Data:In Reverse transcriptase-polymerase chain reaction (RT- PCR) examination, appropriately sized product (206 bp) were amplified from tissue samples and specific signals for IPN virus were observed.
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Conclusion & Impact:In conclusion, our results suggest that apoptosis, a cell death mechanism, could be appeared in favor of IPN virus in pathogenesis of the disease in field conditions.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

In this study, total of 12 rainbow trout (average weight 5 g) from a fish farm were examined. Clinically, the fish showed inappetite and irregular swimming. In histopathological examination, focal to diffuse acinar cell degeneration and necrosis were observed in pancreas. Immunohistochemically, IPN viral antigens appeared especially in the pancreas, liver, cardiac and skeletal muscles, and occasionally in the kidneys, spleen, stomach, intestines and gills. In Reverse transcriptase-polymerase chain reaction (RT- PCR) examination, appropriately sized product (206 bp) were amplified from tissue samples and specific signals for IPN virus were observed. Apoptosis signals TUNEL (Terminal Transferase dUTP Nick End Labeling), caspases-3, -8 and -9 positivities) indicated that apoptosis was induced both by intrinsic and extrinsic pathways in the skeleton and cardiac muscles, whereas by only intrinsic pathway in the liver, spleen, kidneys, gills, stomach and intestines. However, signals of apoptotic cell death were not clearly detected in pathogenesis of IPN in the pancreas as the main target organ. In conclusion, our results suggest that apoptosis, a cell death mechanism, could be appeared in favor of IPN virus in pathogenesis of the disease in field conditions.

Özet

Çalışmada, bir balık işletmesinde iştahsızlık ve yüzme bozuklukları gösteren, ortalama 5 g ağırlığında, 12 adet gökkuşağı alabalığı incelendi. Histopatolojik incelemede, pankreasta ekzokrin bezlerin ve Langerhans adacıklarının fokal ya da diffuz nekrozları görüldü. İmmunohistokimyasal incelemede; infeksiyöz pankreatik nekroz (IPN) viral antijenleri, yoğun olarak pankreas, karaciğer, kalp ve iskelet kasları daha az olarak da, böbrek, dalak, mide, bağırsaklar ve solungaçlarda ortaya konuldu. Ters transkriptaz polimeraz zincir reaksiyonu (RT- PCR) sonucunda; IPN virüsünü işaret eden yaklaşık 206 bp aralığında görüntü elde edildi. Apoptozis göstergelerinden TUNEL (Terminal Transferase dUTP Nick End Labeling), kaspaz-3, -8 ve -9 pozitiflikleri; apoptozisin iskelet ve kalp kasında içsel ve dışsal uyarımlarla, karaciğer, dalak, böbrekler, sekonder lameller, mide, pilorik keseler ve bağırsaklarda içsel yol ile indüklendiğini göstermektedir. Buna karşın, IPN virüsü için primer hedef organ olan pankreasta apoptotik hücre ölümü, hastalığın patogenezisinde çok etkin değildi. Sonuçta; çalışma bulguları IPN’un patogenezisinde apoptotik hücre ölüm mekanizmasının virüsün lehine olduğunu göstermektedir.

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Cite This Article

ALBAYRAK, H., TOPLU, N., AYDOĞAN, A., METİN, N., EPİKMEN, E. T. (2022). Role of apoptosis in pathogenesis of infectious pancreatic necrosis in rainbow trout (Oncorhynchus mykiss Walbaum, 1792). Ankara Üniversitesi Veteriner Fakültesi Dergisi, Cilt: 57 - Sayı: 3, 191–196. https://ajindex.com/articles/445012

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