Relationship between virulence of Streptococcus iniae strains, factors of oxidative activity and cytotoxicity in rainbow trout (Oncorhynchus mykiss) spleen macrophages
Publish Year: 1393
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJAAH-1-1_007
تاریخ نمایه سازی: 13 اسفند 1399
Abstract:
In the present study, the effect of the high and low virulence S. iniae strains on oxidative activity and cytotoxic effects of trout spleen macrophages were studied. Spleen macrophages were collected from trout. Luminol was used as chemiluminigenic probe. Phorbolmyristate acetate (PMA) also was used as positive control activating agent of respiratory burst and significantly stimulated production of reactive oxygen species (ROS) by normal macrophages. Sensitivity of S. Iniae strains to H2O2 and cytotoxicity of bacterial strains for trout macrophages was also determined using the antibacterial effect of H2O2 and the release of lactate dehydrogenase from infected macrophages, respectively. The low virulence strain was killed approximately 6 times more by H2O2 compared to the high virulence strain. Results indicate that, high virulence in S. iniae appears to be correlated with higher macrophage cytotoxicity and resistance to ROS.
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Authors
A. Nematollahi
Division of Aquatic Animal Health and Diseases, Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, Shahrekord University, Shahrekord, Iran
A. Mohebbi
Department of of Clinical Sciences, Faculty of Veterinary Medicine, Shahrekord University, Shahrekord, Iran
A. Mokhtari
Departments of Aquatic Animal Health and Diseases, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
S. K. Baruah
Laboratory of Aquaculture and Artemia Reference Centre, Faculty of Bioscience Engineering, Ghent University, Belgium
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